Android向node.js编写的服务器发送数据并接收请求

本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下

首先时node.js服务器端代码

var http = require("http");
var fs = require("fs");
var queryString = require('querystring');
var url = require('url');
var util = require('util'); 

http.createServer(function (request, response) {
 // 定义了一个post变量，用于暂存请求体的信息
 var post = '';
 request.on('data', function(chunk){
  post += chunk;
 });
// 在end事件触发后，通过querystring.parse将post解析为真正的POST请求格式，然后向客户端返回。
 request.on('end', function(){
  post = queryString.parse(post);
  console.log("请求结束"+post.body);
  response.writeHead(200, {"Content-Type": "text/plain;charset=utf8"});
  response.write("请求成功");
  response.end();
 }); 

}).listen(8888);
console.log("服务器启动"); 

function writeFile(str) {
 fs.writeFile('E:/log.txt', str, function (err) {
  if (err) {
   return console.error(err);
  }
  console.log("数据写入成功！");
 })
}

然后是Android部分

package com.example.hanbo.servertest; 

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView; 

import org.json.JSONObject; 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLEncoder; 

public class MainActivity extends AppCompatActivity {
private TextView textView;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
   textView= (TextView) findViewById(R.id.textView);
  Button button= (Button) findViewById(R.id.button);
  button.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View view) {
    textView.setText("开始请求");
    new Thread(new Runnable() {
     @Override
     public void run() {
      HttpURLConnection connection = null;
      URL url = null;
      try {
       url = new URL("http://192.168.1.177:8888");
       connection = (HttpURLConnection) url.openConnection();
       connection.setRequestMethod("POST");
       connection.setConnectTimeout(8000);
       connection.setReadTimeout(8000);
       connection.setRequestProperty("Content-Type","application/json");
       OutputStream outputStream=connection.getOutputStream();
       BufferedWriter requestBody=new BufferedWriter(new OutputStreamWriter(outputStream));
       String str = URLEncoder.encode("抓哇", "UTF-8");
       requestBody.write("name=javaPost&body=1");
       requestBody.flush();
       requestBody.close();
       getResponseJava(connection);
      } catch (MalformedURLException e) {
       e.printStackTrace();
      } catch (ProtocolException e) {
       e.printStackTrace();
      } catch (IOException e) {
       e.printStackTrace();
      }
     }
    }).start();
   }
  });
 } 

 private void getResponseJava(HttpURLConnection urlConnection) {
   InputStream in = null;
   try {
    in = urlConnection.getInputStream();//响应
   } catch (IOException e) {
    urlConnection.disconnect();
    //textView.setText(e.getMessage());
    return;
   }
   BufferedReader reader = null;
   try {
    reader = new BufferedReader(new InputStreamReader(in,"UTF-8"));
   } catch (UnsupportedEncodingException e1) {
    e1.printStackTrace();
   }
   final StringBuilder result = new StringBuilder();
   String tmp = null;
   try {
    while((tmp = reader.readLine()) != null){
     result.append(tmp);
    }
   } catch (IOException e) {
    //textView.setText(e.getMessage());
    return;
   } finally {
    try {
     reader.close();
     urlConnection.disconnect();
    } catch (IOException e) {
    }
   }
   runOnUiThread(new Runnable() {
    @Override
    public void run() {
     textView.setText(result);
    }
   }); 

  }
 }

最后是结果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。