GET方法和POST方法

 package com.hanqi.cunchu;

 import android.app.ProgressDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
 import android.widget.EditText;

 import java.io.InputStream;
 import java.io.ObjectStreamClass;
 import java.io.OutputStream;
 import java.net.URL;

 import javax.net.ssl.HttpsURLConnection;

 public class TestActivity3 extends AppCompatActivity {
     EditText et_2;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_test3);
         et_2=(EditText)findViewById(R.id.et_2);
     }
     //显示结果
     String STR = "";
     //jdk的get方式
     public void bt1_onclick(View v) {
         //1-启动进度对话框
         final ProgressDialog PD = ProgressDialog.show(this, null, "请稍等. . . ");
         //2-启动子线程，访问远程服务器
         new Thread() {
             @Override
             public void run() {
                 //访问远程服务器
                 //JDK-get
                 HttpsURLConnection HUC = null;
                 try {
                     //1-构造URL对象
                     URL url = new URL("http://192.168.31.56:81/index.asp?name=tom&password=456");
                     //2-得到HttpURLConnection
                     HUC = (HttpsURLConnection) url.openConnection();
                     //3-设置HttpURLConnection
                     HUC.setRequestMethod("GET");
                     HUC.setConnectTimeout(3000);
                     HUC.setReadTimeout(3000);
                     //4-连接远程服务器
                     HUC.connect();
                     //5-接收响应报文的状态
                     int code = HUC.getResponseCode();
                     //6-判断响应状态码，是否等于200
                     if (code == 200) {
                         //7-处理

                         //1-接收数据

                         //2-得到数据流
                         InputStream is = HUC.getInputStream();
                         //读到的数据
                         byte[] b = new byte[1024];
                         //读到的数据长度
                         int i = 0;
                         while ((i = is.read(b)) > 0) {
                             //接收字符串
                             STR += new String(b, 0, i);
                         }
                         is.close();

                     } else {
                         STR = "响应错误,错误码=" + code;
                     }
                     //显示结果,不能直接跨线程访问主线程的视图
                     runOnUiThread(new Runnable() {
                         @Override
                         public void run() {
                             et_2.setText(STR);
                         }
                     });
                 } catch (Exception e) {
                     e.printStackTrace();
                 } finally {
                     //8-关闭连接和进度对话框
                     //释放资源
                     if (HUC != null) {
                         HUC.disconnect();
                     }
                     //支持跨线程访问
                     PD.dismiss();
                 }
             }
         }.start();
     }
     //jdk的POST方式
     public void bt2_onclick(View v)
     {
         //1-启动进度对话框
         final ProgressDialog PD=ProgressDialog.show(this, null, "请稍等. . . ");
         //2-启动子线程，访问远程服务器
         new Thread()
         {
             @Override
             public void run() {
                 //访问远程服务器
                 //JDK-get
                 HttpsURLConnection HUC = null;
                 try {
                     //1-构造URL对象
                     URL url = new URL("http://192.168.31.56:81/index.asp");
                     //2-得到HttpURLConnection
                     HUC = (HttpsURLConnection)url.openConnection();
                     //3-设置HttpURLConnection
                     HUC.setRequestMethod("POST");
                     HUC.setConnectTimeout(3000);
                     HUC.setReadTimeout(3000);
                     //4-连接远程服务器，输出流
                     HUC.connect();
                     //数据放到请求体里面
                     //1-得到输出流
                     OutputStream os=HUC.getOutputStream();
                     String outStr="name=tom&password=123";
                     os.write(outStr.getBytes("UTF-8"));
                     Log.e("TAG","发送. . .");
                     //5-接收响应报文的状态
                     int code = HUC.getResponseCode();
                     //6-判断响应状态码，是否等于200
                     if (code==200)
                     {
                         //7-处理

                         //1-接收数据

                         //2-得到数据流，输入流
                         InputStream is=HUC.getInputStream();
                         //读到的数据
                         byte[]b=new byte[1024];
                         //读到的数据长度
                         int i = 0;
                         while((i=is.read(b))>0)
                         {
                             //接收字符串
                             STR+=new String(b,0,i);
                         }
                         is.close();
                         os.close();
                     }
                     else
                     {
                         STR="响应错误,错误码="+code;
                     }
                     //显示结果,不能直接跨线程访问主线程的视图
                     runOnUiThread(new Runnable() {
                         @Override
                         public void run() {
                             et_2.setText(STR);
                         }
                     });
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
                 finally {
                     //8-关闭连接和进度对话框
                     //释放资源
                     if (HUC!=null) {
                         HUC.disconnect();
                     }
                     //支持跨线程访问
                     PD.dismiss();
                 }
             }
         }.start();
     }
 }

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     tools:context="com.hanqi.cunchu.TestActivity3">
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal">
         <Button
             android:layout_width="0dp"
             android:layout_weight="1"
             android:layout_height="wrap_content"
             android:text="JDK-GET方式"
             android:onClick="bt1_onclick"/>
         <Button
             android:layout_width="0dp"
             android:layout_weight="1"
             android:layout_height="wrap_content"
             android:text="JDK-POST方式"
             android:onClick="bt2_onclick"/>
     </LinearLayout>
     <EditText
         android:layout_width="match_parent"
         android:layout_height="200dp"
         android:id="@+id/et_2"/>
 </LinearLayout>