/**
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* 微信小程序JavaScriptSDK
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*
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* @version 1.1
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* @date 2019-01-20
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*/
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var ERROR_CONF = {
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KEY_ERR: 311,
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KEY_ERR_MSG: 'key格式错误',
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PARAM_ERR: 310,
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PARAM_ERR_MSG: '请求参数信息有误',
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SYSTEM_ERR: 600,
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SYSTEM_ERR_MSG: '系统错误',
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WX_ERR_CODE: 1000,
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WX_OK_CODE: 200
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};
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var BASE_URL = 'https://apis.map.qq.com/ws/';
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var URL_SEARCH = BASE_URL + 'place/v1/search';
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var URL_SUGGESTION = BASE_URL + 'place/v1/suggestion';
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var URL_GET_GEOCODER = BASE_URL + 'geocoder/v1/';
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var URL_CITY_LIST = BASE_URL + 'district/v1/list';
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var URL_AREA_LIST = BASE_URL + 'district/v1/getchildren';
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var URL_DISTANCE = BASE_URL + 'distance/v1/';
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var EARTH_RADIUS = 6378136.49;
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var Utils = {
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/**
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* 得到终点query字符串
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* @param {Array|String} 检索数据
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*/
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location2query(data) {
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if (typeof data == 'string') {
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return data;
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}
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var query = '';
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for (var i = 0; i < data.length; i++) {
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var d = data[i];
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if (!!query) {
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query += ';';
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}
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if (d.location) {
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query = query + d.location.lat + ',' + d.location.lng;
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}
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if (d.latitude && d.longitude) {
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query = query + d.latitude + ',' + d.longitude;
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}
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}
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return query;
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},
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/**
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* 计算角度
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*/
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rad(d) {
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return d * Math.PI / 180.0;
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},
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/**
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* 处理终点location数组
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* @return 返回终点数组
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*/
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getEndLocation(location){
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var to = location.split(';');
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var endLocation = [];
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for (var i = 0; i < to.length; i++) {
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endLocation.push({
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lat: parseFloat(to[i].split(',')[0]),
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lng: parseFloat(to[i].split(',')[1])
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})
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}
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return endLocation;
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},
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/**
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* 计算两点间直线距离
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* @param a 表示纬度差
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* @param b 表示经度差
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* @return 返回的是距离，单位m
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*/
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getDistance(latFrom, lngFrom, latTo, lngTo) {
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var radLatFrom = this.rad(latFrom);
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var radLatTo = this.rad(latTo);
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var a = radLatFrom - radLatTo;
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var b = this.rad(lngFrom) - this.rad(lngTo);
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var distance = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(radLatFrom) * Math.cos(radLatTo) * Math.pow(Math.sin(b / 2), 2)));
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distance = distance * EARTH_RADIUS;
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distance = Math.round(distance * 10000) / 10000;
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return parseFloat(distance.toFixed(0));
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},
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/**
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* 使用微信接口进行定位
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*/
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getWXLocation(success, fail, complete) {
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wx.getLocation({
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type: 'gcj02',
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success: success,
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fail: fail,
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complete: complete
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});
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},
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/**
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* 获取location参数
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*/
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getLocationParam(location) {
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if (typeof location == 'string') {
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var locationArr = location.split(',');
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if (locationArr.length === 2) {
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location = {
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latitude: location.split(',')[0],
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longitude: location.split(',')[1]
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};
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} else {
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location = {};
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}
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}
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return location;
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},
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/**
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* 回调函数默认处理
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*/
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polyfillParam(param) {
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param.success = param.success || function () { };
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param.fail = param.fail || function () { };
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param.complete = param.complete || function () { };
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},
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/**
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* 验证param对应的key值是否为空
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*
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* @param {Object} param 接口参数
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* @param {String} key 对应参数的key
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*/
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checkParamKeyEmpty(param, key) {
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if (!param[key]) {
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var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + key +'参数格式有误');
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param.fail(errconf);
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param.complete(errconf);
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return true;
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}
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return false;
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},
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/**
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* 验证参数中是否存在检索词keyword
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*
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* @param {Object} param 接口参数
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*/
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checkKeyword(param){
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return !this.checkParamKeyEmpty(param, 'keyword');
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},
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/**
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* 验证location值
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*
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* @param {Object} param 接口参数
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*/
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checkLocation(param) {
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var location = this.getLocationParam(param.location);
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if (!location || !location.latitude || !location.longitude) {
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var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + ' location参数格式有误');
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param.fail(errconf);
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param.complete(errconf);
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return false;
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}
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return true;
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},
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/**
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* 构造错误数据结构
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* @param {Number} errCode 错误码
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* @param {Number} errMsg 错误描述
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*/
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buildErrorConfig(errCode, errMsg) {
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return {
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status: errCode,
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message: errMsg
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};
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},
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/**
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*
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* 数据处理函数
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* 根据传入参数不同处理不同数据
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* @param {String} feature 功能名称
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* search 地点搜索
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* suggest关键词提示
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* reverseGeocoder逆地址解析
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* geocoder地址解析
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* getCityList获取城市列表：父集
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* getDistrictByCityId获取区县列表：子集
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* calculateDistance距离计算
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* @param {Object} param 接口参数
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* @param {Object} data 数据
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*/
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handleData(param,data,feature){
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if (feature === 'search') {
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var searchResult = data.data;
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var searchSimplify = [];
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for (var i = 0; i < searchResult.length; i++) {
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searchSimplify.push({
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id: searchResult[i].id || null,
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title: searchResult[i].title || null,
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latitude: searchResult[i].location && searchResult[i].location.lat || null,
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longitude: searchResult[i].location && searchResult[i].location.lng || null,
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address: searchResult[i].address || null,
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category: searchResult[i].category || null,
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tel: searchResult[i].tel || null,
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adcode: searchResult[i].ad_info && searchResult[i].ad_info.adcode || null,
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city: searchResult[i].ad_info && searchResult[i].ad_info.city || null,
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district: searchResult[i].ad_info && searchResult[i].ad_info.district || null,
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province: searchResult[i].ad_info && searchResult[i].ad_info.province || null
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})
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}
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param.success(data, {
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searchResult: searchResult,
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searchSimplify: searchSimplify
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})
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} else if (feature === 'suggest') {
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var suggestResult = data.data;
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var suggestSimplify = [];
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for (var i = 0; i < suggestResult.length; i++) {
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suggestSimplify.push({
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adcode: suggestResult[i].adcode || null,
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address: suggestResult[i].address || null,
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category: suggestResult[i].category || null,
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city: suggestResult[i].city || null,
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district: suggestResult[i].district || null,
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id: suggestResult[i].id || null,
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latitude: suggestResult[i].location && suggestResult[i].location.lat || null,
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longitude: suggestResult[i].location && suggestResult[i].location.lng || null,
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province: suggestResult[i].province || null,
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title: suggestResult[i].title || null,
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type: suggestResult[i].type || null
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})
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}
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param.success(data, {
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suggestResult: suggestResult,
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suggestSimplify: suggestSimplify
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})
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} else if (feature === 'reverseGeocoder') {
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var reverseGeocoderResult = data.result;
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var reverseGeocoderSimplify = {
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address: reverseGeocoderResult.address || null,
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latitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lat || null,
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longitude: reverseGeocoderResult.location && reverseGeocoderResult.location.lng || null,
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adcode: reverseGeocoderResult.ad_info && reverseGeocoderResult.ad_info.adcode || null,
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city: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.city || null,
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district: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.district || null,
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nation: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.nation || null,
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province: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.province || null,
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street: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street || null,
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street_number: reverseGeocoderResult.address_component && reverseGeocoderResult.address_component.street_number || null,
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recommend: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.recommend || null,
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rough: reverseGeocoderResult.formatted_addresses && reverseGeocoderResult.formatted_addresses.rough || null
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};
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if (reverseGeocoderResult.pois) {//判断是否返回周边poi
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var pois = reverseGeocoderResult.pois;
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var poisSimplify = [];
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for (var i = 0;i < pois.length;i++) {
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poisSimplify.push({
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id: pois[i].id || null,
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title: pois[i].title || null,
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latitude: pois[i].location && pois[i].location.lat || null,
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longitude: pois[i].location && pois[i].location.lng || null,
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address: pois[i].address || null,
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category: pois[i].category || null,
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adcode: pois[i].ad_info && pois[i].ad_info.adcode || null,
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city: pois[i].ad_info && pois[i].ad_info.city || null,
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district: pois[i].ad_info && pois[i].ad_info.district || null,
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province: pois[i].ad_info && pois[i].ad_info.province || null
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})
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}
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param.success(data,{
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reverseGeocoderResult: reverseGeocoderResult,
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reverseGeocoderSimplify: reverseGeocoderSimplify,
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pois: pois,
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poisSimplify: poisSimplify
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})
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} else {
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param.success(data, {
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reverseGeocoderResult: reverseGeocoderResult,
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reverseGeocoderSimplify: reverseGeocoderSimplify
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})
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}
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} else if (feature === 'geocoder') {
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var geocoderResult = data.result;
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var geocoderSimplify = {
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title: geocoderResult.title || null,
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latitude: geocoderResult.location && geocoderResult.location.lat || null,
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longitude: geocoderResult.location && geocoderResult.location.lng || null,
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adcode: geocoderResult.ad_info && geocoderResult.ad_info.adcode || null,
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province: geocoderResult.address_components && geocoderResult.address_components.province || null,
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city: geocoderResult.address_components && geocoderResult.address_components.city || null,
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district: geocoderResult.address_components && geocoderResult.address_components.district || null,
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street: geocoderResult.address_components && geocoderResult.address_components.street || null,
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street_number: geocoderResult.address_components && geocoderResult.address_components.street_number || null,
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level: geocoderResult.level || null
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};
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param.success(data,{
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geocoderResult: geocoderResult,
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geocoderSimplify: geocoderSimplify
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});
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} else if (feature === 'getCityList') {
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var provinceResult = data.result[0];
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var cityResult = data.result[1];
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var districtResult = data.result[2];
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param.success(data,{
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provinceResult: provinceResult,
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cityResult: cityResult,
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districtResult: districtResult
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});
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} else if (feature === 'getDistrictByCityId') {
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var districtByCity = data.result[0];
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param.success(data, districtByCity);
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} else if (feature === 'calculateDistance') {
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var calculateDistanceResult = data.result.elements;
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var distance = [];
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for (var i = 0; i < calculateDistanceResult.length; i++){
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distance.push(calculateDistanceResult[i].distance);
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}
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param.success(data, {
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calculateDistanceResult: calculateDistanceResult,
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distance: distance
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});
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} else {
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param.success(data);
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}
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},
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/**
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* 构造微信请求参数，公共属性处理
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*
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* @param {Object} param 接口参数
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* @param {Object} param 配置项
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* @param {String} feature 方法名
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*/
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buildWxRequestConfig(param, options, feature) {
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var that = this;
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options.header = { "content-type": "application/json" };
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options.method = 'GET';
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options.success = function (res) {
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var data = res.data;
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if (data.status === 0) {
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that.handleData(param, data, feature);
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} else {
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param.fail(data);
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}
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};
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options.fail = function (res) {
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res.statusCode = ERROR_CONF.WX_ERR_CODE;
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param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
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};
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options.complete = function (res) {
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var statusCode = +res.statusCode;
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switch(statusCode) {
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case ERROR_CONF.WX_ERR_CODE: {
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param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
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break;
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}
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case ERROR_CONF.WX_OK_CODE: {
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var data = res.data;
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if (data.status === 0) {
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param.complete(data);
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} else {
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param.complete(that.buildErrorConfig(data.status, data.message));
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}
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break;
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}
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default:{
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param.complete(that.buildErrorConfig(ERROR_CONF.SYSTEM_ERR, ERROR_CONF.SYSTEM_ERR_MSG));
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}
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}
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};
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return options;
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},
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/**
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* 处理用户参数是否传入坐标进行不同的处理
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*/
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locationProcess(param, locationsuccess, locationfail, locationcomplete) {
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var that = this;
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locationfail = locationfail || function (res) {
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res.statusCode = ERROR_CONF.WX_ERR_CODE;
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param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
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};
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locationcomplete = locationcomplete || function (res) {
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if (res.statusCode == ERROR_CONF.WX_ERR_CODE) {
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param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg));
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}
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};
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if (!param.location) {
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that.getWXLocation(locationsuccess, locationfail, locationcomplete);
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} else if (that.checkLocation(param)) {
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var location = Utils.getLocationParam(param.location);
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locationsuccess(location);
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}
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}
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};
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class QQMapWX {
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/**
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* 构造函数
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*
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* @param {Object} options 接口参数,key 为必选参数
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*/
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constructor(options) {
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if (!options.key) {
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throw Error('key值不能为空');
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}
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this.key = options.key;
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};
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/**
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* POI周边检索
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*
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* @param {Object} options 接口参数对象
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*
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* 参数对象结构可以参考
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* @see http://lbs.qq.com/webservice_v1/guide-search.html
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*/
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search(options) {
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var that = this;
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options = options || {};
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Utils.polyfillParam(options);
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if (!Utils.checkKeyword(options)) {
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return;
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}
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var requestParam = {
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keyword: options.keyword,
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orderby: options.orderby || '_distance',
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page_size: options.page_size || 10,
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page_index: options.page_index || 1,
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output: 'json',
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key: that.key
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};
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if (options.address_format) {
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requestParam.address_format = options.address_format;
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}
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if (options.filter) {
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requestParam.filter = options.filter;
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}
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var distance = options.distance || "1000";
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var auto_extend = options.auto_extend || 1;
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var region = null;
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var rectangle = null;
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//判断城市限定参数
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if (options.region) {
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region = options.region;
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}
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//矩形限定坐标(暂时只支持字符串格式)
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if (options.rectangle) {
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rectangle = options.rectangle;
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}
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var locationsuccess = function (result) {
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if (region && !rectangle) {
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//城市限定参数拼接
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requestParam.boundary = "region(" + region + "," + auto_extend + "," + result.latitude + "," + result.longitude + ")";
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} else if (rectangle && !region) {
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//矩形搜索
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requestParam.boundary = "rectangle(" + rectangle + ")";
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} else {
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requestParam.boundary = "nearby(" + result.latitude + "," + result.longitude + "," + distance + "," + auto_extend + ")";
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}
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wx.request(Utils.buildWxRequestConfig(options, {
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url: URL_SEARCH,
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data: requestParam
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}, 'search'));
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};
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Utils.locationProcess(options, locationsuccess);
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};
|
|
/**
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* sug模糊检索
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*
|
* @param {Object} options 接口参数对象
|
*
|
* 参数对象结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-suggestion.html
|
*/
|
getSuggestion(options) {
|
var that = this;
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options = options || {};
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Utils.polyfillParam(options);
|
|
if (!Utils.checkKeyword(options)) {
|
return;
|
}
|
|
var requestParam = {
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keyword: options.keyword,
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region: options.region || '全国',
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region_fix: options.region_fix || 0,
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policy: options.policy || 0,
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page_size: options.page_size || 10,//控制显示条数
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page_index: options.page_index || 1,//控制页数
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get_subpois : options.get_subpois || 0,//返回子地点
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output: 'json',
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key: that.key
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};
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//长地址
|
if (options.address_format) {
|
requestParam.address_format = options.address_format;
|
}
|
//过滤
|
if (options.filter) {
|
requestParam.filter = options.filter;
|
}
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//排序
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if (options.location) {
|
var locationsuccess = function (result) {
|
requestParam.location = result.latitude + ',' + result.longitude;
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_SUGGESTION,
|
data: requestParam
|
}, "suggest"));
|
};
|
Utils.locationProcess(options, locationsuccess);
|
} else {
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_SUGGESTION,
|
data: requestParam
|
}, "suggest"));
|
}
|
};
|
|
/**
|
* 逆地址解析
|
*
|
* @param {Object} options 接口参数对象
|
*
|
* 请求参数结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-gcoder.html
|
*/
|
reverseGeocoder(options) {
|
var that = this;
|
options = options || {};
|
Utils.polyfillParam(options);
|
var requestParam = {
|
coord_type: options.coord_type || 5,
|
get_poi: options.get_poi || 0,
|
output: 'json',
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key: that.key
|
};
|
if (options.poi_options) {
|
requestParam.poi_options = options.poi_options
|
}
|
|
var locationsuccess = function (result) {
|
requestParam.location = result.latitude + ',' + result.longitude;
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_GET_GEOCODER,
|
data: requestParam
|
}, 'reverseGeocoder'));
|
};
|
Utils.locationProcess(options, locationsuccess);
|
};
|
|
/**
|
* 地址解析
|
*
|
* @param {Object} options 接口参数对象
|
*
|
* 请求参数结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-geocoder.html
|
*/
|
geocoder(options) {
|
var that = this;
|
options = options || {};
|
Utils.polyfillParam(options);
|
|
if (Utils.checkParamKeyEmpty(options, 'address')) {
|
return;
|
}
|
|
var requestParam = {
|
address: options.address,
|
output: 'json',
|
key: that.key
|
};
|
|
//城市限定
|
if (options.region) {
|
requestParam.region = options.region;
|
}
|
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_GET_GEOCODER,
|
data: requestParam
|
},'geocoder'));
|
};
|
|
|
/**
|
* 获取城市列表
|
*
|
* @param {Object} options 接口参数对象
|
*
|
* 请求参数结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-region.html
|
*/
|
getCityList(options) {
|
var that = this;
|
options = options || {};
|
Utils.polyfillParam(options);
|
var requestParam = {
|
output: 'json',
|
key: that.key
|
};
|
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_CITY_LIST,
|
data: requestParam
|
},'getCityList'));
|
};
|
|
/**
|
* 获取对应城市ID的区县列表
|
*
|
* @param {Object} options 接口参数对象
|
*
|
* 请求参数结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-region.html
|
*/
|
getDistrictByCityId(options) {
|
var that = this;
|
options = options || {};
|
Utils.polyfillParam(options);
|
|
if (Utils.checkParamKeyEmpty(options, 'id')) {
|
return;
|
}
|
|
var requestParam = {
|
id: options.id || '',
|
output: 'json',
|
key: that.key
|
};
|
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_AREA_LIST,
|
data: requestParam
|
},'getDistrictByCityId'));
|
};
|
|
/**
|
* 用于单起点到多终点的路线距离(非直线距离)计算：
|
* 支持两种距离计算方式：步行和驾车。
|
* 起点到终点最大限制直线距离10公里。
|
*
|
* 新增直线距离计算。
|
*
|
* @param {Object} options 接口参数对象
|
*
|
* 请求参数结构可以参考
|
* http://lbs.qq.com/webservice_v1/guide-distance.html
|
*/
|
calculateDistance(options) {
|
var that = this;
|
options = options || {};
|
Utils.polyfillParam(options);
|
|
if (Utils.checkParamKeyEmpty(options, 'to')) {
|
return;
|
}
|
|
var requestParam = {
|
mode: options.mode || 'walking',
|
to: Utils.location2query(options.to),
|
output: 'json',
|
key: that.key
|
};
|
|
if (options.from) {
|
options.location = options.from;
|
}
|
|
//计算直线距离
|
if(requestParam.mode == 'straight'){
|
var locationsuccess = function (result) {
|
var locationTo = Utils.getEndLocation(requestParam.to);//处理终点坐标
|
var data = {
|
message:"query ok",
|
result:{
|
elements:[]
|
},
|
status:0
|
};
|
for (var i = 0; i < locationTo.length; i++) {
|
data.result.elements.push({//将坐标存入
|
distance: Utils.getDistance(result.latitude, result.longitude, locationTo[i].lat, locationTo[i].lng),
|
duration:0,
|
from:{
|
lat: result.latitude,
|
lng:result.longitude
|
},
|
to:{
|
lat: locationTo[i].lat,
|
lng: locationTo[i].lng
|
}
|
});
|
}
|
var calculateResult = data.result.elements;
|
var distanceResult = [];
|
for (var i = 0; i < calculateResult.length; i++) {
|
distanceResult.push(calculateResult[i].distance);
|
}
|
return options.success(data,{
|
calculateResult: calculateResult,
|
distanceResult: distanceResult
|
});
|
};
|
|
Utils.locationProcess(options, locationsuccess);
|
} else {
|
var locationsuccess = function (result) {
|
requestParam.from = result.latitude + ',' + result.longitude;
|
wx.request(Utils.buildWxRequestConfig(options, {
|
url: URL_DISTANCE,
|
data: requestParam
|
},'calculateDistance'));
|
};
|
|
Utils.locationProcess(options, locationsuccess);
|
}
|
}
|
};
|
|
module.exports = QQMapWX;
|
