package com.doumee.core.annotation.excel;
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import com.doumee.core.constants.ResponseStatus;
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import com.doumee.core.exception.BusinessException;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import org.apache.commons.lang3.BooleanUtils;
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import org.apache.commons.lang3.CharUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.lang3.math.NumberUtils;
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import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.ss.usermodel.*;
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import org.apache.poi.ss.util.CellRangeAddress;
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import org.apache.poi.xssf.streaming.SXSSFWorkbook;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.core.annotation.AnnotationConfigurationException;
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import org.springframework.web.multipart.MultipartFile;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.math.BigDecimal;
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import java.net.URLEncoder;
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import java.nio.charset.Charset;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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/**
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* Excel导出实现
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* @author Eva.Caesar Liu
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* @date 2022/04/18 18:12
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*/
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@Data
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public class ExcelExporter<T> {
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private static final String DEFAULT_SHEET_NAME = "Sheet1";
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private Class<T> modelClass;
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private ExcelExporter(){}
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private final static Logger log = LoggerFactory.getLogger(ExcelExporter.class);
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private final static String EXCEL2003 = "xls";
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private final static String EXCEL2007 = "xlsx";
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/**
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* 构造器
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* @param modelClass 实体Class对象
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*/
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public static <T> ExcelExporter<T> build(Class<T> modelClass) {
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ExcelExporter<T> excelExporter = new ExcelExporter<>();
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excelExporter.setModelClass(modelClass);
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return excelExporter;
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}
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/**
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* 导出到指定输出流
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* @param data 数据
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* @param sheetName Sheet名称
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* @param os 输出流
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*/
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public void export (List<T> data, String sheetName, OutputStream os) {
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SXSSFWorkbook sxssfWorkbook;
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try {
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sxssfWorkbook = new SXSSFWorkbook();
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CellStyle style = sxssfWorkbook.createCellStyle();
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Sheet sheet = sxssfWorkbook.createSheet(sheetName);
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// 创建列头
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sheet.createFreezePane(0, 1);
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Row header = sheet.createRow(0);
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List<ColumnInfo> columns = this.getColumns();
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for (int columnIndex = 0; columnIndex < columns.size(); columnIndex++) {
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ColumnInfo column = columns.get(columnIndex);
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Cell cell = header.createCell(columnIndex);
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cell.setCellValue(column.columnConfig.name());
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// 列宽设置
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if (column.columnConfig.width() == -1) {
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sheet.setColumnWidth(columnIndex, column.columnConfig.name().length() * 2 * 256);
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} else {
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sheet.setColumnWidth(columnIndex, column.columnConfig.width() * 2 * 256);
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}
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// 设置列头单元格
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configHeaderCell(sxssfWorkbook, cell, column.columnConfig,style);
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}
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// 创建数据记录
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for (int rowIndex = 0; rowIndex < data.size(); rowIndex++) {
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Row row = sheet.createRow(rowIndex + 1);
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for (int columnIndex = 0; columnIndex < columns.size(); columnIndex++) {
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ColumnInfo column = columns.get(columnIndex);
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Cell cell = row.createCell(columnIndex);
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cell.setCellValue(getCellData(column, data.get(rowIndex)));
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// 设置数据单元格
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configDataCell(sxssfWorkbook, cell, column.columnConfig,style);
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}
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}
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sxssfWorkbook.write(os);
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os.close();
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} catch (Exception e) {
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throw new BusinessException(ResponseStatus.EXPORT_EXCEL_ERROR, e);
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} finally {
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if (os != null) {
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try {
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os.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* 导出至响应流
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* @param data 数据
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* @param fileName Excel文件名
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* @param sheetName Sheet名称
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* @param response HttpServletResponse对象
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*/
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public void export (List<T> data, String fileName, String sheetName, HttpServletResponse response) {
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try {
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String encodeFileName = URLEncoder.encode(fileName, Charset.forName("UTF-8").toString()) + ".xlsx";
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response.setHeader("Content-Disposition","attachment;filename=" + encodeFileName);
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response.setContentType("application/octet-stream");
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response.setHeader("eva-opera-type", "download");
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response.setHeader("eva-download-filename", encodeFileName);
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this.export(data, sheetName, response.getOutputStream());
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} catch (IOException e) {
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throw new BusinessException(ResponseStatus.EXPORT_EXCEL_ERROR, e);
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}
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}
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/**
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* 导出至响应流
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* @param data 数据
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* @param fileName Excel文件名
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* @param response HttpServletResponse对象
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*/
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public void export (List<T> data, String fileName, HttpServletResponse response) {
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this.export(data, fileName, DEFAULT_SHEET_NAME, response);
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}
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/**
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* 导出至响应流
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* @param data 数据
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* @param fileName Excel文件名
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* @param response HttpServletResponse对象
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*/
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public void exportWithFirstAndEnd (List<T> data, String fileName,String first,String end, HttpServletResponse response) {
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this.exportWithFirstAndEnd(data, fileName, DEFAULT_SHEET_NAME, first,end,response);
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}
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/**
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* 导出至响应流
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* @param data 数据
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* @param fileName Excel文件名
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* @param sheetName Sheet名称
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* @param response HttpServletResponse对象
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*/
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public void exportWithFirstAndEnd (List<T> data, String fileName, String sheetName, String first,String end ,HttpServletResponse response) {
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try {
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String encodeFileName = URLEncoder.encode(fileName, Charset.forName("UTF-8").toString()) + ".xlsx";
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response.setHeader("Content-Disposition","attachment;filename=" + encodeFileName);
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response.setContentType("application/octet-stream");
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response.setHeader("eva-opera-type", "download");
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response.setHeader("eva-download-filename", encodeFileName);
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this.exportWithFirstAndEnd(data, sheetName,first,end, response.getOutputStream());
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} catch (IOException e) {
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throw new BusinessException(ResponseStatus.EXPORT_EXCEL_ERROR, e);
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}
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}
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/**
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* 导出到指定输出流
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* @param data 数据
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* @param sheetName Sheet名称
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*/
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public void exportWithFirstAndEnd (List<T> data, String sheetName,String first,String end, OutputStream os) {
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SXSSFWorkbook sxssfWorkbook;
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try {
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sxssfWorkbook = new SXSSFWorkbook();
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Sheet sheet = sxssfWorkbook.createSheet(sheetName);
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// 创建列头
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sheet.createFreezePane(0, 2);
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sheet.addMergedRegion(new CellRangeAddress(0 ,0,0,this.getColumns().size()-1));
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Row title = sheet.createRow(0);
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title.setHeight((short) 1000);
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Cell c = title.createCell(0);
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c.setCellValue(first);
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configFirstCell(sxssfWorkbook,c);
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Row header = sheet.createRow(1);
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header.setHeight((short)600);
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List<ColumnInfo> columns = this.getColumns();
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for (int columnIndex = 0; columnIndex < columns.size(); columnIndex++) {
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ColumnInfo column = columns.get(columnIndex);
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Cell cell = header.createCell(columnIndex);
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cell.setCellValue(new HSSFRichTextString(column.columnConfig.name()));
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// 列宽设置
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if (column.columnConfig.width() == -1) {
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sheet.setColumnWidth(columnIndex, column.columnConfig.name().length() * 2 * 256);
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} else {
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sheet.setColumnWidth(columnIndex, column.columnConfig.width() * 2 * 256);
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}
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// 设置列头单元格
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configHeaderCell(sxssfWorkbook, cell, column.columnConfig);
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}
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// 创建数据记录
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for (int rowIndex = 0; rowIndex < data.size(); rowIndex++) {
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Row row = sheet.createRow(rowIndex + 2);
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for (int columnIndex = 0; columnIndex < columns.size(); columnIndex++) {
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ColumnInfo column = columns.get(columnIndex);
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Cell cell = row.createCell(columnIndex);
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cell.setCellValue(getCellData(column, data.get(rowIndex)));
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// 设置数据单元格
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configDataCell(sxssfWorkbook, cell, column.columnConfig);
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}
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}
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if(StringUtils.isNotBlank(end)){
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sheet.addMergedRegion(new CellRangeAddress(data.size()+2 ,data.size()+2,0,this.getColumns().size()-1));
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Row endRow = sheet.createRow(data.size()+2);
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// endRow.setHeight((short) 600);
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Cell c1 = endRow.createCell(0);
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c1.setCellValue(end);
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configEndCell(sxssfWorkbook,c1);
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}
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sxssfWorkbook.write(os);
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os.close();
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} catch (Exception e) {
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throw new BusinessException(ResponseStatus.EXPORT_EXCEL_ERROR, e);
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} finally {
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if (os != null) {
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try {
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os.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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}
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/**
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* 配置数据单元格
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*/
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private void configDataCell (SXSSFWorkbook workbook, Cell cell, ExcelColumn columnConfig) {
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CellStyle style = workbook.createCellStyle();
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style.setAlignment(columnConfig.align());
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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style.setFillForegroundColor(columnConfig.dataBackgroundColor().getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints(columnConfig.fontSize());
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// 字体颜色
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font.setColor(columnConfig.color().getIndex());
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// 粗体
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font.setBold(columnConfig.bold());
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// 斜体
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font.setItalic(columnConfig.italic());
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style.setFont(font);
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// 边框
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configCellBorder(style);
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style.setWrapText(true);
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cell.setCellStyle(style);
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}
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/**
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* 配置列头单元格
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*/
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private void configFirstCell (SXSSFWorkbook workbook, Cell cell ) {
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CellStyle style = workbook.createCellStyle();
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style.setAlignment(HorizontalAlignment.CENTER);
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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style.setFillForegroundColor(IndexedColors.PALE_BLUE.getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints((short)24);
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font.setBold(true);
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style.setFont(font);
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// 设置边框
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configCellBorder(style);
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cell.setCellStyle(style);
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}
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/**
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* 配置列头单元格
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*/
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private void configEndCell (SXSSFWorkbook workbook, Cell cell ) {
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CellStyle style = workbook.createCellStyle();
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style.setAlignment(HorizontalAlignment.RIGHT);
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints((short)14);
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style.setFont(font);
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// 设置边框
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configCellBorder(style);
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cell.setCellStyle(style);
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}
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/**
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* 配置列头单元格
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*/
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private void configHeaderCell (SXSSFWorkbook workbook, Cell cell, ExcelColumn columnConfig) {
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CellStyle style = workbook.createCellStyle();
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style.setAlignment(columnConfig.align());
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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// style.setFillForegroundColor(columnConfig.backgroundColor().getIndex());
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style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints((short)11);
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font.setColor(columnConfig.color().index);
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font.setBold(true);
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style.setFont(font);
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// 设置边框
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style.setWrapText(true);
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configCellBorder(style);
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cell.setCellStyle(style);
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}
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/**
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* 获取列集合
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*/
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private List<ColumnInfo> getColumns () {
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Map<Integer, ColumnInfo> sortedFields = new TreeMap<>();
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Field[] fields = modelClass.getDeclaredFields();
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int index = 0;
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for (Field field : fields) {
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ExcelColumn excelColumn = field.getAnnotation(ExcelColumn.class);
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if (excelColumn == null) {
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continue;
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}
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if (sortedFields.get(excelColumn.index()) != null) {
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throw new AnnotationConfigurationException("Excel column contains the same index.");
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}
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sortedFields.put(excelColumn.index() == -1 ? index : excelColumn.index(), new ColumnInfo(excelColumn, field));
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index++;
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}
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return new ArrayList<>(sortedFields.values());
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}
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public static void main(String[] args) {
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ExcelExporter m = new ExcelExporter();
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// ExcelExporter.build(UserSalaryListVO.class).getColumns();
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}
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/**
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* 配置数据单元格
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*/
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private void configDataCell (SXSSFWorkbook workbook, Cell cell, ExcelColumn columnConfig, CellStyle style) {
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// CellStyle style = workbook.createCellStyle();
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style.setAlignment(columnConfig.align());
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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style.setFillForegroundColor(columnConfig.dataBackgroundColor().getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints(columnConfig.fontSize());
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// 字体颜色
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font.setColor(columnConfig.color().getIndex());
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// 粗体
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font.setBold(columnConfig.bold());
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// 斜体
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font.setItalic(columnConfig.italic());
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style.setFont(font);
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// 边框
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configCellBorder(style);
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cell.setCellStyle(style);
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}
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/**
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* 配置列头单元格
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*/
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private void configHeaderCell (SXSSFWorkbook workbook, Cell cell, ExcelColumn columnConfig,CellStyle style) {
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// CellStyle style = workbook.createCellStyle();
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style.setAlignment(columnConfig.align());
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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// 设置背景
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style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
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style.setFillForegroundColor(columnConfig.backgroundColor().getIndex());
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// 字体
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Font font = workbook.createFont();
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font.setFontHeightInPoints(columnConfig.fontSize());
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style.setFont(font);
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// 设置边框
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configCellBorder(style);
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cell.setCellStyle(style);
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}
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/**
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* 配置单元格边框
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*/
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private void configCellBorder (CellStyle style) {
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style.setBorderTop(BorderStyle.THIN);
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style.setBorderRight(BorderStyle.THIN);
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style.setBorderBottom(BorderStyle.THIN);
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style.setBorderLeft(BorderStyle.THIN);
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style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
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style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
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style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
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style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
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}
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/**
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* 处理单元格数据
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*/
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private String getCellData (ColumnInfo columnInfo, T row) throws Exception {
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columnInfo.field.setAccessible(Boolean.TRUE);
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Object value = columnInfo.field.get(row);
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columnInfo.field.setAccessible(Boolean.FALSE);
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if (value == null) {
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return "";
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}
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String stringValue = value.toString();
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// 存在自定义数据处理器
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if (!columnInfo.columnConfig.handler().equals(ExcelDataHandlerAdapter.class)) {
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try {
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Object instance = columnInfo.columnConfig.handler().newInstance();
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Method formatMethod = columnInfo.columnConfig.handler().getMethod("format", Object[].class);
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List<Object> args = new ArrayList<>();
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args.add(value);
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for (String arg : columnInfo.columnConfig.args()) {
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args.add(arg);
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}
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value = formatMethod.invoke(instance, new Object[]{args.toArray()});
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stringValue = value.toString();
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} catch (Exception e) {
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throw new IllegalStateException("Can not format data by " + columnInfo.columnConfig.handler(), e);
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}
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}
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// 日期处理
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if (!"".equals(columnInfo.columnConfig.dateFormat()) && value instanceof Date) {
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SimpleDateFormat sdf = new SimpleDateFormat(columnInfo.columnConfig.dateFormat());
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stringValue = sdf.format((Date) value);
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}
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// 值映射
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if (!"".equals(columnInfo.columnConfig.valueMapping())) {
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String[] segs = columnInfo.columnConfig.valueMapping().split(";");
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for (String seg : segs) {
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String[] mapping = seg.split("=");
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if (value.toString().equals(mapping[0].trim())) {
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stringValue = mapping[1].trim();
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}
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}
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}
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// 前缀处理
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stringValue = columnInfo.columnConfig.prefix() + stringValue;
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// 后缀处理
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stringValue = stringValue + columnInfo.columnConfig.suffix();
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return stringValue;
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}
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@Data
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@AllArgsConstructor
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private static class ColumnInfo {
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private ExcelColumn columnConfig;
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private Field field;
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}
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public static <T> List<T> readExcel(String path, Class<T> cls, MultipartFile file) {
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String fileName = file.getOriginalFilename();
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if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
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log.error("上传文件格式不正确");
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}
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List<T> dataList = new ArrayList<>();
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Workbook workbook = null;
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try {
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InputStream is = file.getInputStream();
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if (fileName.endsWith(EXCEL2007)) {
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workbook = new XSSFWorkbook(is);
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}
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if (fileName.endsWith(EXCEL2003)) {
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workbook = new HSSFWorkbook(is);
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}
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if (workbook != null) {
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//类映射 注解 value-->bean columns
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Map<String, List<Field>> classMap = new HashMap<>();
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List<Field> fields = Stream.of(cls.getDeclaredFields()).collect(Collectors.toList());
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fields.forEach(
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field -> {
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ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
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if (annotation != null) {
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String value = annotation.name();
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if (StringUtils.isBlank(value)) {
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return;//return起到的作用和continue是相同的 语法
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}
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if (!classMap.containsKey(value)) {
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classMap.put(value, new ArrayList<>());
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}
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field.setAccessible(true);
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classMap.get(value).add(field);
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}
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}
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);
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//索引-->columns
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Map<Integer, List<Field>> reflectionMap = new HashMap<>(16);
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//默认读取第一个sheet
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Sheet sheet = workbook.getSheetAt(0);
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boolean firstRow = true;
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for (int i = sheet.getFirstRowNum(); i <= sheet.getLastRowNum(); i++) {
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Row row = sheet.getRow(i);
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//首行 提取注解
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if (firstRow) {
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for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
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Cell cell = row.getCell(j);
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String cellValue = getCellValue(cell);
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if (classMap.containsKey(cellValue)) {
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reflectionMap.put(j, classMap.get(cellValue));
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}
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}
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firstRow = false;
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} else {
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//忽略空白行
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if (row == null) {
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continue;
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}
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try {
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T t = cls.newInstance();
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//判断是否为空白行
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boolean allBlank = true;
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for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {
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if (reflectionMap.containsKey(j)) {
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Cell cell = row.getCell(j);
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String cellValue = getCellValue(cell);
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if (StringUtils.isNotBlank(cellValue)) {
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allBlank = false;
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}
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List<Field> fieldList = reflectionMap.get(j);
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fieldList.forEach(
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x -> {
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try {
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handleField(t, cellValue, x);
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} catch (Exception e) {
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log.error(String.format("reflect field:%s value:%s exception!", x.getName(), cellValue), e);
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}
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}
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);
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}
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}
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if (!allBlank) {
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dataList.add(t);
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} else {
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log.warn(String.format("row:%s is blank ignore!", i));
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}
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} catch (Exception e) {
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log.error(String.format("parse row:%s exception!", i), e);
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}
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}
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}
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}
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} catch (Exception e) {
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log.error(String.format("parse excel exception!"), e);
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} finally {
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if (workbook != null) {
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try {
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workbook.close();
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} catch (Exception e) {
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log.error(String.format("parse excel exception!"), e);
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}
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}
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}
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return dataList;
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}
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private static <T> void handleField(T t, String value, Field field) throws Exception {
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Class<?> type = field.getType();
|
if (type == null || type == void.class || StringUtils.isBlank(value)) {
|
return;
|
}
|
if (type == Object.class) {
|
field.set(t, value);
|
//数字类型
|
} else if (type.getSuperclass() == null || type.getSuperclass() == Number.class) {
|
if (type == int.class || type == Integer.class) {
|
field.set(t, NumberUtils.toInt(value));
|
} else if (type == long.class || type == Long.class) {
|
field.set(t, NumberUtils.toLong(value));
|
} else if (type == byte.class || type == Byte.class) {
|
field.set(t, NumberUtils.toByte(value));
|
} else if (type == short.class || type == Short.class) {
|
field.set(t, NumberUtils.toShort(value));
|
} else if (type == double.class || type == Double.class) {
|
field.set(t, NumberUtils.toDouble(value));
|
} else if (type == float.class || type == Float.class) {
|
field.set(t, NumberUtils.toFloat(value));
|
} else if (type == char.class || type == Character.class) {
|
field.set(t, CharUtils.toChar(value));
|
} else if (type == boolean.class) {
|
field.set(t, BooleanUtils.toBoolean(value));
|
} else if (type == BigDecimal.class) {
|
field.set(t, new BigDecimal(value));
|
}
|
} else if (type == Boolean.class) {
|
field.set(t, BooleanUtils.toBoolean(value));
|
} else if (type == Date.class) {
|
field.set(t, value);
|
} else if (type == String.class) {
|
field.set(t, value);
|
} else {
|
Constructor<?> constructor = type.getConstructor(String.class);
|
field.set(t, constructor.newInstance(value));
|
}
|
}
|
|
private static String getCellValue(Cell cell) {
|
if (cell == null) {
|
return "";
|
}else{
|
return StringUtils.trimToEmpty(cell.getStringCellValue());
|
}
|
/* if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
|
if (HSSFDateUtil.isCellDateFormatted(cell)) {
|
return HSSFDateUtil.getJavaDate(cell.getNumericCellValue()).toString();
|
} else {
|
return new BigDecimal(cell.getNumericCellValue()).toString();
|
}
|
} else if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
|
return StringUtils.trimToEmpty(cell.getStringCellValue());
|
} else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {
|
return StringUtils.trimToEmpty(cell.getCellFormula());
|
} else if (cell.getCellType() == Cell.CELL_TYPE_BLANK) {
|
return "";
|
} else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
|
return String.valueOf(cell.getBooleanCellValue());
|
} else if (cell.getCellType() == Cell.CELL_TYPE_ERROR) {
|
return "ERROR";
|
} else {
|
return cell.toString().trim();
|
}*/
|
}
|
|
/* public static <T> void writeExcel(HttpServletResponse response, List<T> dataList, Class<T> cls, String fileName) {
|
Field[] fields = cls.getDeclaredFields();
|
List<Field> fieldList = Arrays.stream(fields)
|
.filter(field -> {
|
ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
if (annotation != null && annotation.col() > 0) {
|
field.setAccessible(true);
|
return true;
|
}
|
return false;
|
}).sorted(Comparator.comparing(field -> {
|
int col = 0;
|
ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
if (annotation != null) {
|
col = annotation.col();
|
}
|
return col;
|
})).collect(Collectors.toList());
|
|
Workbook wb = new XSSFWorkbook();
|
Sheet sheet = wb.createSheet("Sheet1");
|
AtomicInteger ai = new AtomicInteger();
|
{
|
Row row = sheet.createRow(ai.getAndIncrement());
|
AtomicInteger aj = new AtomicInteger();
|
//写入头部
|
fieldList.forEach(field -> {
|
ExcelColumn annotation = field.getAnnotation(ExcelColumn.class);
|
String columnName = "";
|
if (annotation != null) {
|
columnName = annotation.value();
|
}
|
Cell cell = row.createCell(aj.getAndIncrement());
|
CellStyle cellStyle = wb.createCellStyle();
|
cellStyle.setFillForegroundColor(IndexedColors.WHITE.getIndex());
|
Font font = wb.createFont();
|
cellStyle.setFont(font);
|
cell.setCellStyle(cellStyle);
|
cell.setCellValue(columnName);
|
});
|
}
|
if (CollectionUtils.isNotEmpty(dataList)) {
|
dataList.forEach(t -> {
|
Row row1 = sheet.createRow(ai.getAndIncrement());
|
AtomicInteger aj = new AtomicInteger();
|
fieldList.forEach(field -> {
|
Class<?> type = field.getType();
|
Object value = "";
|
try {
|
value = field.get(t);
|
} catch (Exception e) {
|
e.printStackTrace();
|
}
|
Cell cell = row1.createCell(aj.getAndIncrement());
|
if (value != null) {
|
if (type == Date.class) {
|
cell.setCellValue(value.toString());
|
} else {
|
cell.setCellValue(value.toString());
|
}
|
cell.setCellValue(value.toString());
|
}
|
});
|
});
|
}
|
//冻结窗格
|
wb.getSheet("Sheet1").createFreezePane(0, 1, 0, 1);
|
//浏览器下载excel
|
buildExcelDocument(fileName, wb, response);
|
}*/
|
|
/**
|
* 浏览器下载excel
|
*
|
* @param fileName
|
* @param wb
|
* @param response
|
*/
|
/*
|
private static void buildExcelDocument(String fileName, Workbook wb, HttpServletResponse response) {
|
try {
|
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
|
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
|
response.flushBuffer();
|
wb.write(response.getOutputStream());
|
} catch (IOException e) {
|
e.printStackTrace();
|
}
|
}*/
|
|
/**
|
* 生成excel文件
|
*
|
* @param path 生成excel路径
|
* @param wb
|
*/
|
/* private static void buildExcelFile(String path, Workbook wb) {
|
File file = new File(path);
|
if (file.exists()) {
|
file.delete();
|
}
|
try {
|
wb.write(new FileOutputStream(file));
|
} catch (Exception e) {
|
e.printStackTrace();
|
}
|
}*/
|
|
}
|
