HttpURLConnection——get,post

来源：互联网发布：淘宝店身份认证复核编辑：程序博客网时间：2024/06/01 08:18
  1 package com.ch.day4_httpurlconn;  2   3 import java.io.BufferedReader;  4 import java.io.DataOutputStream;  5 import java.io.IOException;  6 import java.io.InputStreamReader;  7 import java.net.HttpURLConnection;  8 import java.net.MalformedURLException;  9 import java.net.URL; 10 import java.util.ArrayList; 11 import java.util.Iterator; 12 import java.util.Vector; 13  14 import android.os.Bundle; 15 import android.os.Handler; 16 import android.app.Activity; 17 import android.view.Menu; 18 import android.view.View; 19 import android.view.View.OnClickListener; 20 import android.widget.Button; 21 import android.widget.TextView; 22 import android.widget.Toast; 23  24 public class MainActivity extends Activity { 25     private TextView jsonData; 26     private Button login; 27     //服务器地址，路径 28     public static final String JSON_URL = "http://169.254.109.73:8080/tqyb/newsList.json"; 29     public static final String LOGIN_URL = "http://169.254.109.73:8080/serverof1407a/loginServlet"; 30      31     //定义一个handler的匿名内部类的对象 32     Handler handler = new Handler(){ 33         public void handleMessage(android.os.Message msg) { 34             if(msg.what == 1){ 35                 jsonData.setText((String)msg.obj); 36             }else if(msg.what == 2){ 37                 login.setText((String)msg.obj); 38             } 39         }; 40     }; 41      42     @Override 43     protected void onCreate(Bundle savedInstanceState) { 44         super.onCreate(savedInstanceState); 45         setContentView(R.layout.activity_main); 46          47         init(); 48     } 49      50     public void init(){ 51         jsonData = (TextView) findViewById(R.id.jsonData); 52         login = (Button) findViewById(R.id.login); 53         //点击login到服务器登陆验证 54         login.setOnClickListener(new OnClickListener() { 55             @Override 56             public void onClick(View v) { 57                 //在次线程中，请求web服务器 58                 new Thread(){ 59                     public void run() { 60                         //调用httpurlconnection的get请求，到服务器请求json数据 61 //                        String rs = loginByServerByGet("admin", "123456"); 62                          63                         String rs = loginByServerByPost("admin1", "123456"); 64                         //在此次线程中，通过handler把数据传递给主线程，显示在主线程的组件中 65                         handler.sendMessage(handler.obtainMessage(2, rs)); 66                         if("success".equals(rs)){ 67                             //跳转到功能页面， 68                         }else{ 69                             //提示登录失败，请修改登录信息等等 70                         } 71                          72                     }; 73                 }.start(); 74             } 75         }); 76          77         jsonData.setOnClickListener(new OnClickListener() { 78             @Override 79             public void onClick(View v) { 80                 //在次线程中，请求web服务器 81                 new Thread(){ 82                     public void run() { 83                         //调用httpurlconnection的get请求，到服务器请求json数据 84                         String rs = getJsonFromWeb();//此方法请求web服务器 85                         //在此次线程中，通过handler把数据传递给主线程，显示在主线程的组件中 86                         handler.sendMessage(handler.obtainMessage(1, rs)); 87                     }; 88                 }.start(); 89             } 90         }); 91     } 92     //到服务器验证登陆信息，，通过post请求 93     public String loginByServerByPost(String name,String pass){ 94         String rs = ""; 95         URL url = null; 96         HttpURLConnection urlConn = null; 97         BufferedReader br = null; 98         DataOutputStream output = null;  99 //        StringBuffer sb = new StringBuffer();//定义缓存字符串，拼装字符串100         try {101             102             url = new URL(LOGIN_URL);//创建和服务器的连接对象URL103             urlConn = (HttpURLConnection) url.openConnection();//打开连接104             urlConn.setConnectTimeout(5*1000);//设置连接超时容忍时间105             urlConn.setReadTimeout(5*1000);//设置读取时间106             107             //设置post请求108             urlConn.setRequestMethod("POST");109             urlConn.setDoInput(true);110             urlConn.setDoOutput(true);111             //通过post请求，向服务器传值112             output = new DataOutputStream(urlConn.getOutputStream());//创建服务器的输出流113             String data = "username="+name+"&userpass="+pass;114             output.write(data.getBytes());115             output.flush();116             output.close();//传值成功，完毕117             118             if(urlConn.getResponseCode() == 200){//如果响应码为200表示响应成功，并且同时成功的相应了数据119                 //获得服务器相应的数据，字节输入流（数据流），转换为缓存字符流便于读取120                 br = new BufferedReader(new InputStreamReader(urlConn.getInputStream(),"utf-8"));121                 rs = br.readLine();//获得服务器返回的简单数据122                 System.out.println(rs);123             }124             125         } catch (IOException e) {126             // TODO Auto-generated catch block127             e.printStackTrace();128         }129         130         return rs;//转换为字符串，返回131     }132     //到服务器验证登陆信息，，通过get请求133     public String loginByServerByGet(String name,String pass){134         String rs = "";135         URL url = null;136         HttpURLConnection urlConn = null;137         BufferedReader br = null;138         StringBuffer sb = new StringBuffer(LOGIN_URL);//定义缓存字符串，拼装字符串139         try {140             sb.append("?username="+name);141             sb.append("&userpass="+pass);142             System.out.println(sb.toString());143             url = new URL(sb.toString());//创建和服务器的连接对象URL144             urlConn = (HttpURLConnection) url.openConnection();//打开连接145             urlConn.setConnectTimeout(5*1000);//设置连接超时容忍时间146             urlConn.setReadTimeout(5*1000);//设置读取时间147             if(urlConn.getResponseCode() == 200){//如果响应码为200表示响应成功，并且同时成功的相应了数据148                 //获得服务器相应的数据，字节输入流（数据流），转换为缓存字符流便于读取149                 br = new BufferedReader(new InputStreamReader(urlConn.getInputStream(),"utf-8"));150                 rs = br.readLine();//获得服务器返回的简单数据151                 System.out.println(rs);152             }153             154         } catch (IOException e) {155             // TODO Auto-generated catch block156             e.printStackTrace();157         }158         159         return rs;//转换为字符串，返回160     }161     162     163     public String getJsonFromWeb(){164         URL url = null;165         HttpURLConnection urlConn = null;166         BufferedReader br = null;167         StringBuffer sb = new StringBuffer();//定义缓存字符串，拼装字符串168         try {169             url = new URL(JSON_URL);//创建和服务器的连接对象URL170             urlConn = (HttpURLConnection) url.openConnection();//打开连接171             urlConn.setConnectTimeout(5*1000);//设置连接超时容忍时间172             urlConn.setReadTimeout(5*1000);//设置读取时间173             if(urlConn.getResponseCode() == 200){//如果相应码为200表示响应成功，并且同时成功的相应了数据174                 //获得服务器相应的数据，字节输入流（数据流），转换为缓存字符流便于读取175                 br = new BufferedReader(new InputStreamReader(urlConn.getInputStream(),"utf-8"));176                 String str = null;177                 while((str = br.readLine()) != null){//一行行的读取，一行行的收集178                     sb.append(str);179                 }180             }181             182         } catch (IOException e) {183             // TODO Auto-generated catch block184             e.printStackTrace();185         }186         187         return sb.toString();//转换为字符串，返回188     }189 197 }
0 0