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>