wex5 如何利用 百度地图 定位 和 天气插件

引包：

require("cordova!cordova-plugin-geolocation");

require("cordova!com.justep.cordova.plugin.baidulocation");

Model.prototype.modelLoad = function(event){

var self = this;

var data = self.comp("data1"); //获取节点

var gpsDtd = this.getLocation(); //调用自带定位插件

gpsDtd.done(function(position) {

var positioning=position.latitude+"|"+position.longitude; //获取经纬度

data.setValue("location", position.address); //获取位置

require([ 'http://api.map.baidu.com/getscript?v=1.4&ak=&services=&t=20170929031641' ], function() { //百度api 作用：通过经纬度获取城市

if(BMap){

var point = new BMap.Point(position.longitude,position.latitude);

var gc = new BMap.Geocoder();

gc.getLocation(point, function(rs){

var addComp = rs.addressComponents;

address = addComp.province + ", " + addComp.city + ", " + addComp.district + ", " + addComp.street + ", " + addComp.streetNumber;

var params2 = {"city":encodeURI(addComp.city)};

Baas.sendRequest({ //访问后台天气接口

"url" : "/num/Data", // 请求地址

"action" : "weatherApi", // action

"params" : params2, // action对应的参数

"success" : function(weather){

console.info(weather);

if(weather && weather.status==200){

var forecast = weather.data.forecast[0];

var info = forecast.high +" "+ forecast.low +" "+ forecast.type +" "+ forecast.fx + forecast.fl ;

self.getElementByXid("weatherInfo").innerText=info;

}else{

self.getElementByXid("weatherInfo").innerText="暂无天气信息";

}

}

});

});

}

})

})

};

//定位方法

Model.prototype.getLocation = function() {

/*

* 获取当前定位，获取地理位置失败，暂时采用默认地址

*/

var gpsDtd = $.Deferred();

if (this.wxApi) {

this.wxApi.exec().done(function(wx) {

wx.getLocation({

type : "gcj02",

success : function(data) {

gpsDtd.resolve({

coorType : data.coorType,

address : data.address,

longitude : data.longitude,

latitude : data.latitude

});

},

cancel : function(res) {

gpsDtd.resolve({

longitude : 116.45764191999997,

latitude : 39.8622934399999

});

}

});

}).fail(function() {

gpsDtd.resolve({

longitude : 116.45764191999997,

latitude : 39.8622934399999

});

});

} else if (navigator.geolocation) {

var success = function(data) {

// data.longtitude 经度

// data.latitude 纬度

// data.address 文字描述的地址信息

// data.hasRadius 是否有定位精度半径

// data.radius 定位精度半径

// data.type 定位方式

// data.coorType

gpsDtd.resolve({

coorType : data.coorType,

address : data.address,

coorType: data.coorType,

longitude : data.coords.longitude,

latitude : data.coords.latitude

});

};

var fail = function(e) {

justep.Util.hint("获取地理位置失败，暂时采用默认地址");

gpsDtd.resolve({

longitude : 116.45764191999997,

latitude : 39.8622934399999

});

};

/**

* 如果在室内 enableHighAccuracy: true 反而误差更大

* 如果在室外 enableHighAccuracy: true 相对准确

*/

navigator.geolocation.getCurrentPosition(success, fail);

/*var gpsWatchID = navigator.geolocation.watchPosition(success, fail,{

timeout: 30*1000,

maximumAge: 30000,

enableHighAccuracy: true});*/

} else {

justep.Util.hint("获取地理位置失败，暂时采用默认地址");

gpsDtd.resolve({

longitude : 116.45764191999997,

latitude : 39.8622934399999

});

}

return gpsDtd.promise();

};

BAAS：

public static JSONObject weatherApi(JSONObject params, ActionContext context)

throws SQLException, NamingException, IOException {

Connection conn = context.getConnection(DATASOURCE_NUMYSQL);

String city = params.getString("city");

JSONObject rt = new JSONObject();

try {

// 把字符串转换为URL请求地址

URL url = new URL("http://www.sojson.com/open/api/weather/json.shtml?city="+city);

// 打开连接

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

connection.connect();// 连接会话

// 获取输入流

BufferedReader br = new BufferedReader(newInputStreamReader(connection.getInputStream(),"UTF-8"));

String line;

StringBuilder sb = new StringBuilder();

while ((line = br.readLine()) != null) {// 循环读取流

sb.append(line);

}

br.close();// 关闭流

connection.disconnect();// 断开连接

JSONObject weather = JSONObject.parseObject(sb.toString());

return weather;

}finally {

conn.close();

}

}