map.centerAndZoom(point,8);
var marker = new BMap.Marker(point);
map.addOverlay(marker);
var label = new BMap.Label(temp.ip,{offset:new BMap.Size(20,-10)});
marker.setLabel(label);
}
}
//创建一个标注
// function addMarker(temp){
// console.log(temp.x);
// var point = new BMap.Point(temp.x, temp.y);
// map.centerAndZoom(point,12);
// var marker = new BMap.Marker(point);
// map.addOverlay(marker);
// var label = new BMap.Label(temp.ip,{offset:new BMap.Size(20,-10)});
// marker.setLabel(label);
// }
</script>
2. 后端代码（nodejs）
步骤：
1> 引入http模块，express模块，body-parser模块
2> 设置允许跨域请求和请求响应的数据类型
3>设置接口请求回调函数
4>请求回调函数中，取到获取的数据并遍历，向百度api发起请求
5>获取到百度的响应数据后push进数组，并对前端请求作出响应
var http = require('http');
var express = require('express');
var app = express(); //实例化
var key = 'OxLYdFmu3YS1haMUcaBmGMBK0P7PbOqb'; //百度api的key
var bodyParser = require('body-parser');
// 创建 application/x-www-form-urlencoded 编码解析
// var urlencodedParser = bodyParser.urlencoded({ extended: false })
app.use(bodyParser.json()); //json编码
//设置跨域访问
app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With,Content-Type");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE");
res.header("X-Powered-By",' 3.2.1')
res.header("Content-Type", "application/json;charset=utf-8");
next();
});
//post请求,url/map
app.post('/map',function(req,res){
var ipArr = req.body;
var result = Array();
for (var i = 0; i < ipArr.length; i++) {
var tree = '';
var options = {
hostname: 'api.map.baidu.com',
port: 80,
path: '/location/ip?ak=' + key + "&coor=bd09ll&ip=" + ipArr[i],
method: 'GET'
};
// 向远程服务器端发送请求
var getLocation = http.request(options, function(response){
response.on('data', function(data) {
tree += data;
result.push(tree);
//避免缓存
tree = '';
});
});
getLocation.end();
}
//延后发送请求响应
setTimeout(function(){
res.status(200).send(result);
}, 500);
})
//监听8081接口打印请求域名和端口
var server = app.listen(8081, function () {
var host = server.address().address
var port = server.address().port
console.log("应用实例，访问地址为 http://%s:%s", host, port)
})
