使用快遞在節點服務器上接收JSON對象

Question

我正在向java中的節點服務器發送json對象。我想顯示服務器控制檯中的值。在服務器控制檯上，我得到未定義的。如何獲取JSON對象並使用express在nodejs中解析它。

Java代碼的

 try 
      { 
       HttpClient client = new DefaultHttpClient(); 
       HttpPost post = new HttpPost("http://example.com:3000/"); 
       JSONObject msg = new JSONObject(); Log.e("data",code); 
       msg.put("data", code); 
       HttpEntity entity = new StringEntity(msg.toString()); 
       BufferedReader reader = new BufferedReader(new 
       InputStreamReader(client.execute(post).getEntity().getContent())); 
       String response = reader.readLine(); 
       Log.e("response", response); 

      } 
      catch(Exception e) 
      { Log.e("",e.toString()); 
      } 

節點服務器

var express = require("express"); 
var http=require("http"); 
var app = express(); 
app.use(express.bodyParser()); 
app.post("/", function(request, response) 
{ 


    response.send(JSON.stringify({success: true})); 
    var token = request.body.data; 
    console.log(token); 


}); 
app.listen(3000); 

Answer 1

您忘記將實體附加到您的發佈請求。

try 
     { 
      HttpClient client = new DefaultHttpClient(); 
      HttpPost post = new HttpPost("http://example.com:3000/"); 
      JSONObject msg = new JSONObject(); Log.e("data",code); 
      msg.put("data", code); 

      // modified code below 
      HttpEntity entity = new StringEntity(msg.toString(), ContentType.create("application/json")); 
      post.setEntity(entity); 

      BufferedReader reader = new BufferedReader(new 
      InputStreamReader(client.execute(post).getEntity().getContent())); 
      String response = reader.readLine(); 
      Log.e("response", response); 

     } 
     catch(Exception e) 
     { Log.e("",e.toString()); 
     } 

Answer 2

您是否嘗試過使用：

var bodyParser = require('body-parser'); 
app.use(bodyParser.json()); 

這需要你安裝body-parser packag e：

$ npm install body-parser