微信小程序开发：微信小程序里面集成百度地图的步骤
在微信小程序开发过程中，有时候会用到微信小程序之外的功能，一般情况下微信小程序是使用腾讯自己的生态，一般都是腾讯大礼包，但是不排除极个别的情况。那么本篇博文就来分享一下微信小程序集成接入百度地图的功能，个人觉得百度地图比腾讯地图要好用一点，因人而异，本案例是根据工作实际需求来介绍的，仅供参考学习。
首先要知道，百度地图已经支持微信小程序的对接API，也提供了SDK等内容，极大方便了微信小程序的多元化开发需求。具体的操作步骤如下所示。
1、打开百度地图开放平台官网，然后找到百度地图的“开发文档”模块，然后找到“微信小程序JavaScript API”部分，然后点击进入，可以查看集成教程，以及下载demo等；
2、打开控制台，注册登录百度地图开发平台的账号，然后进行应用注册，申请应用的APP ID等注册信息（注意：APP ID在微信小程序集成百度地图的地方需要用到）；
3、在相关下载里面下载下来demo，把相关文件导入到项目中去；
4、然后在project.config.json文件里面找到填写“appid”的位置，把在百度地图里面申请创建的应用APP ID复制进去，然后点击保存，运行项目，查看是否运行成功，如果运行成功那么就大功告成；
附录：
附带百度地图的代码，如下所示：
1、bmap-wx.js文件源码：
/**
* @file 微信小程序JSAPI
* @author 崔健 cuijian03@baidu.com 2017.01.10
* @update 邓淑芳 623996689@qq.com 2019.07.03
*/
/**
* 百度地图微信小程序API类
*
* @class
*/
class BMapWX {
/**
* 百度地图微信小程序API类
*
* @constructor
*/
constructor(param) {
this.ak = param["ak"];
}
/**
* 使用微信接口进行定位
*
* @param {string} type 坐标类型
* @param {Function} success 成功执行
* @param {Function} fail 失败执行
* @param {Function} complete 完成后执行
*/
getWXLocation(type, success, fail, complete) {
type = type || 'gcj02',
success = success || function () { };
fail = fail || function () { };
complete = complete || function () { };
wx.getLocation({
type: type,
success: success,
fail: fail,
complete: complete
});
}
/**
* POI周边检索
*
* @param {Object} param 检索配置
* 参数对象结构可以参考
* http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-placeapi
*/
search(param) {
var that = this;
param = param || {};
let searchparam = {
query: param["query"] || '生活服务$美食&酒店',
scope: param["scope"] || 1,
filter: param["filter"] || '',
coord_type: param["coord_type"] || 2,
page_size: param["page_size"] || 10,
page_num: param["page_num"] || 0,
output: param["output"] || 'json',
ak: that.ak,
sn: param["sn"] || '',
timestamp: param["timestamp"] || '',
radius: param["radius"] || 2000,
ret_coordtype: 'gcj02ll'
};
let otherparam = {
iconPath: param["iconPath"],
iconTapPath: param["iconTapPath"],
width: param["width"],
height: param["height"],
alpha: param["alpha"] || 1,
success: param["success"] || function () { },
fail: param["fail"] || function () { }
};
let type = 'gcj02';
let locationsuccess = function (result) {
searchparam["location"] = result["latitude"] + ',' + result["longitude"];
wx.request({
url: 'https://api.map.baidu.com/place/v2/search',
data: searchparam,
header: {
"content-type": "application/json"
},
method: 'GET',
success(data) {
let res = data["data"];
if (res["status"] === 0) {
let poiArr = res["results"];
// outputRes 包含两个对象，
// originalData为百度接口返回的原始数据
// wxMarkerData为小程序规范的marker格式
let outputRes = {};
outputRes["originalData"] = res;
outputRes["wxMarkerData"] = [];
for (let i = 0; i < poiArr.length; i++) {
outputRes["wxMarkerData"][i] = {
id: i,
latitude: poiArr[i]["location"]["lat"],
longitude: poiArr[i]["location"]["lng"],
title: poiArr[i]["name"],
iconPath: otherparam["iconPath"],
iconTapPath: otherparam["iconTapPath"],
address: poiArr[i]["address"],
telephone: poiArr[i]["telephone"],
alpha: otherparam["alpha"],
width: otherparam["width"],
height: otherparam["height"]
}
}
otherparam.success(outputRes);
} else {
otherparam.fail({
errMsg: res["message"],
statusCode: res["status"]
});
}
},
fail(data) {
otherparam.fail(data);
}
});
}
let locationfail = function (result) {
otherparam.fail(result);
};
let locationcomplete = function (result) {
};
if (!param["location"]) {
that.getWXLocation(type, locationsuccess, locationfail, locationcomplete);
} else {
let longitude = param.location.split(',')[1];
let latitude = param.location.split(',')[0];
let errMsg = 'input location';
let res = {
errMsg: errMsg,
latitude: latitude,
longitude: longitude
};
locationsuccess(res);
}
}
/**
* sug模糊检索
*
* @param {Object} param 检索配置
* 参数对象结构可以参考
* http://lbsyun.baidu.com/index.php?title=webapi/place-suggestion-api
*/
suggestion(param) {
var that = this;
param = param || {};
let suggestionparam = {
query: param["query"] || '',
region: param["region"] || '全国',
city_limit: param["city_limit"] || false,
output: param["output"] || 'json',
ak: that.ak,
sn: param["sn"] || '',
timestamp: param["timestamp"] || '',
ret_coordtype: 'gcj02ll'
};
let otherparam = {
success: param["success"] || function () { },
fail: param["fail"] || function () { }
};
wx.request({
url: 'https://api.map.baidu.com/place/v2/suggestion',
data: suggestionparam,
header: {
"content-type": "application/json"
},
method: 'GET',
success(data) {
let res = data["data"];
if (res["status"] === 0) {
otherparam.success(res);
} else {
otherparam.fail({
errMsg: res["message"],
statusCode: res["status"]
});
}
},
fail(data) {
otherparam.fail(data);
}
});
}
/**
* rgc检索（逆地理编码：经纬度->地点描述）
*
* @param {Object} param 检索配置
* 参数对象结构可以参考
* https://lbs.baidu.com/index.php?title=webapi/guide/webservice-geocoding-abroad
*/
regeocoding (param) {
var that = this;
param = param || {};
let regeocodingparam = {
coordtype: param["coordtype"] || 'gcj02ll',
ret_coordtype: 'gcj02ll',
radius: param["radius"] || 1000,
ak: that.ak,
sn: param["sn"] || '',
output: param["output"] || 'json',
callback: param["callback"] || function () { },
extensions_poi: param["extensions_poi"] || 1,
extensions_road: param["extensions_road"] || false,
extensions_town: param["extensions_town"] || false,
language: param["language"] || 'zh-CN',
language_auto: param["language_auto"] || 0
};
let otherparam = {
iconPath: param["iconPath"],
iconTapPath: param["iconTapPath"],
width: param["width"],
height: param["height"],
alpha: param["alpha"] || 1,
success: param["success"] || function () { },
fail: param["fail"] || function () { }
};
let type = 'gcj02';
let locationsuccess = function (result) {
regeocodingparam["location"] = result["latitude"] + ',' + result["longitude"];
wx.request({
url: 'https://api.map.baidu.com/reverse_geocoding/v3',
data: regeocodingparam,
header: {
"content-type": "application/json"
},
method: 'GET',
success(data) {
let res = data["data"];
if (res["status"] === 0) {
let poiObj = res["result"];
// outputRes 包含两个对象：
// originalData为百度接口返回的原始数据
// wxMarkerData为小程序规范的marker格式
let outputRes = {};
outputRes["originalData"] = res;
outputRes["wxMarkerData"] = [];
outputRes["wxMarkerData"][0] = {
id: 0,
latitude: result["latitude"],
longitude: result["longitude"],
address: poiObj["formatted_address"],
iconPath: otherparam["iconPath"],
iconTapPath: otherparam["iconTapPath"],
desc: poiObj["sematic_description"],
business: poiObj["business"],
alpha: otherparam["alpha"],
width: otherparam["width"],
height: otherparam["height"]
}
otherparam.success(outputRes);
} else {
otherparam.fail({
errMsg: res["message"],
statusCode: res["status"]
});
}
},
fail(data) {
otherparam.fail(data);
}
});
};
let locationfail = function (result) {
otherparam.fail(result);
}
let locationcomplete = function (result) {
};
if (!param["location"]) {
that.getWXLocation(type, locationsuccess, locationfail, locationcomplete);
} else {
let longitude = param.location.split(',')[1];
let latitude = param.location.split(',')[0];
let errMsg = 'input location';
let res = {
errMsg: errMsg,
latitude: latitude,
longitude: longitude
};
locationsuccess(res);
}
}
/**
* gc检索（地理编码：地点->经纬度）
* @param {Object} param 检索配置
* 参数对象结构可以参考
* https://lbs.baidu.com/index.php?title=webapi/guide/webservice-geocoding
*/
geocoding(param) {
var that = this;
param = param || {};
let geocodingparam = {
address: param["address"] || '',
city: param["city"] || '',
ret_coordtype: param["coordtype"] || 'gcj02ll',
ak: that.ak,
sn: param["sn"] || '',
output: param["output"] || 'json',
callback: param["callback"] || function () { }
};
let otherparam = {
iconPath: param["iconPath"],
iconTapPath: param["iconTapPath"],
width: param["width"],
height: param["height"],
alpha: param["alpha"] || 1,
success: param["success"] || function () { },
fail: param["fail"] || function () { }
};
if (param["address"]) {
wx.request({
url: 'https://api.map.baidu.com/geocoding/v3',
data: geocodingparam,
header: {
"content-type": "application/json"
},
method: 'GET',
success(data) {
let res = data["data"];
if (res["status"] === 0){
let poiObj = res["result"];
// outputRes 包含两个对象：
// originalData为百度接口返回的原始数据
// wxMarkerData为小程序规范的marker格式
let outputRes = res;
outputRes["originalData"] = res;
outputRes["wxMarkerData"] = [];
outputRes["wxMarkerData"][0] = {
id: 0,
latitude: poiObj["location"]["lat"],
longitude: poiObj["location"]["lng"],
iconPath: otherparam["iconPath"],
iconTapPath: otherparam["iconTapPath"],
alpha: otherparam["alpha"],
width: otherparam["width"],
height: otherparam["height"]
}
otherparam.success(outputRes);
} else {
otherparam.fail({
errMsg: res["message"],
statusCode: res["status"]
});
}
},
fail(data) {
otherparam.fail(data);
}
});
} else {
let errMsg = 'input address!';
let res = {
errMsg: errMsg
};
otherparam.fail(res);
}
}
/**
* 天气检索
* @param {Object} param 检索配置
*/
weather(param) {
var that = this;
param = param || {};
let weatherparam = {
coord_type: param["coord_type"] || 'gcj02',
output: param["output"] || 'json',
ak: that.ak,
sn: param["sn"] || '',
timestamp: param["timestamp"] || ''
};
let otherparam = {
success: param["success"] || function () { },
fail: param["fail"] || function () { }
};
let type = 'gcj02';
let locationsuccess = function (result) {
weatherparam["location"] = result["longitude"] + ',' + result["latitude"];
wx.request({
url: 'https://api.map.baidu.com/telematics/v3/weather',
data: weatherparam,
header: {
"content-type": "application/json"
},
method: 'GET',
success(data) {
let res = data["data"];
if (res["error"] === 0 && res["status"] === 'success') {
let weatherArr = res["results"];
// outputRes 包含两个对象，
// originalData为百度接口返回的原始数据
// wxMarkerData为小程序规范的marker格式
let outputRes = {};
outputRes["originalData"] = res;
outputRes["currentWeather"] = [];
outputRes["currentWeather"][0] = {
currentCity: weatherArr[0]["currentCity"],
pm25: weatherArr[0]["pm25"],
date: weatherArr[0]["weather_data"][0]["date"],
temperature: weatherArr[0]["weather_data"][0]["temperature"],
weatherDesc: weatherArr[0]["weather_data"][0]["weather"],
wind: weatherArr[0]["weather_data"][0]["wind"]
};
otherparam.success(outputRes);
} else {
otherparam.fail({
errMsg: res["message"],
statusCode: res["status"]
});
}
},
fail(data) {
otherparam.fail(data);
}
});
}
let locationfail = function (result) {
otherparam.fail(result);
}
let locationcomplete = function (result) {
}
if (!param["location"]) {
that.getWXLocation(type, locationsuccess, locationfail, locationcomplete);
} else {
let longitude = param.location.split(',')[0];
let latitude = param.location.split(',')[1];
let errMsg = 'input location';
let res = {
errMsg: errMsg,
latitude: latitude,
longitude: longitude
};
locationsuccess(res);
}
}
}
module.exports.BMapWX = BMapWX;
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