koa框架对post内容读取并解析.md

最近在写一个小项目，需要涉及到前端向后端发送一个jsonArray，然后我们后端采用的是node的koa框架，所以需要用http发送，然后这个http包含着一个content即可

移动端的发送代码

JSONArray jsonArray = new JSONArray();
                for (int i = 0; i < 5; i++) {
                    JSONObject object = new JSONObject();
                    try {
                        object.put("user_id", "11111111111");
                        object.put("user_name", "2222222222");
                        object.put("user_phone", "33333333333");
                        object.put("user_address", "444444444444");
                        object.put("product_id", "5555555555");
                        object.put("product_name", "666666666666");
                        object.put("product_price", "77777777777");
                        object.put("product_count", "88888888888");
                    } catch (JSONException e) {
                        Log.i("lin", "---lin's log--->   进入 catch");
                        e.printStackTrace();
                    }
                    jsonArray.put(object);
                }
                String content = jsonArray.toString();
                OkHttpUtils
                        .postString()
                        .url("http://172.20.10.4:3008/testjson")
                        .content(content)
                        .build()
                        .execute(new StringCallback() {
                            @Override public void onError(Request request, Exception e) {
                                Toast.makeText(TestActivity.this, "error", Toast.LENGTH_SHORT).show();
                                Log.i("lin", "---lin's log--->   error   " + e.toString());
                            }

                            @Override public void onResponse(String response) {
                                Toast.makeText(TestActivity.this, "onResponse", Toast.LENGTH_SHORT).show();
                                Log.i("lin", "---lin's log--->   response    " + response);
                            }
                        });

后端接收的代码：

var koa = require('koa');
var controller = require('koa-route');
var parse = require('co-body');
var app = koa();

app.use(controller.post('/testjson', function*() {
    console.log("接收到请求~");
    var item = yield parse(this);
    var jsonList = eval(item);
    for (var i = 0; i < jsonList.length; i++) {
        console.log(jsonList[i].user_id);
        console.log(jsonList[i].user_name);
    }

    this.set('Cache-Control', 'no-cache');
    this.body = "100";
}));

以上便可以实现，前端向后端发送jsonArray并将其解析的过程啦~