get向服务器提交数据

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
        >
    <EditText
            android:id="@+id/et1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="请输入用户名"
            />
    <EditText
            android:id="@+id/et2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="请输入密码"
            />
    <Button
            android:id="@+id/btn"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="登录"/>
</LinearLayout>

package com.example.getmenthod;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class MyActivity extends Activity {
    private EditText ed1;
    private EditText ed2;
    private Button btn;
    private Handler handler;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ed1 = (EditText) findViewById(R.id.et1);
        ed2 = (EditText) findViewById(R.id.et2);
        btn = (Button) findViewById(R.id.btn);
        handler = new Handler(){
            @Override
            public void handleMessage(Message msg) {
                String resu = (String) msg.obj;
                Toast.makeText(MyActivity.this,resu,Toast.LENGTH_SHORT).show();
            }
        };

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String username = ed1.getText().toString();
                String password = ed2.getText().toString();
                String path = "http://192.168.21.1:8080/ok/servlet/Login?username="+username+"&password="+password;
                getMethod(path);
            }
        });

    }
    private void getMethod(final String path){
       //线程里访问网络
        Thread thread = new Thread(){
           @Override
           public void run() {
               try {
                   URL url = new URL(path);
                   HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                   conn.setRequestMethod("GET");
                   conn.setReadTimeout(5000);
                   conn.setConnectTimeout(5000);
                   if(conn.getResponseCode()==200){
                       //获得输入流
                       InputStream in = conn.getInputStream();
                       String result = getDataFromIn(in);
                       //消息队列发送消息
                       Message message = handler.obtainMessage();
                       message.obj = result;
                       handler.sendMessage(message);

                   }
               } catch (Exception e) {
                   e.printStackTrace();
               }
           }
       };
        thread.start();


    }
    private static String getDataFromIn(InputStream in){
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        byte[] b = new byte[1024];
        int len = 0;
        try {
            while ((len = in.read(b))!=-1){
                out.write(b,0,len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new String(out.toByteArray());
    }


}