flask+jsonp跨域前后台交互（接口初体验）

Posted 2020-09-27 失落的黎明

 

 1 # -*- coding: utf-8 -*-
 2 from flask import Flask, jsonify
 3 import psutil, time,json
 4 
 5 app = Flask(__name__)#实例化app对象
 6 
 7 @app.route(\'/test_post/aa\', methods=[\'GET\',\'POST\'])#路由
 8 def test_post():
 9 
10     memKeys = ["total", "available", "percent", "used", "free"]#查看内存信息
11     memVaules = psutil.virtual_memory()
12     memInfo = dict(zip(memKeys, memVaules))
13     memInfo = {k: str(v / pow(1024.0, 3)) + \'GB\' for k,
14                                                      v in memInfo.items() if k != \'percent\'}
15     memInfo[\'percent\'] = psutil.virtual_memory().percent
16     return "successCallback"+"("+json.dumps(memInfo)+")"#将结果以json形式返回，通过jsonp与前台交互
17     
18 
19 
20 if __name__ == "__main__":
21     app.run(
22     host = \'0.0.0.0\',#任何ip都可以访问
23     port = 7777,#端口
24     debug = True
25 )

接下来是前台代码

<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
<script>
    $(\'#search\').click(function () {
        $.ajax({
            type: \'GET\',
            url: \'http://192.168.1.106:7777/test_post/aa\',
            dataType: \'jsonp\', //希望服务器返回json格式的数据
            jsonp: "callback",
            jsonpCallback: "successCallback",//回调方法
            success: function (data) {
                console.log(data);
            }

        });
    });
</script>

接下来就可以看到控制台数据了