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>