使用get方式提交数据

get提交代码

 1 import java.io.InputStream;
 2 import java.net.HttpURLConnection;
 3 import java.net.MalformedURLException;
 4 import java.net.URL;
 5 import java.net.URLDecoder;
 6 import java.net.URLEncoder;
 7 
 8 import com.itheima.htmlviewer.utils.Utils;
 9 
10 import android.os.Bundle;
11 import android.os.Handler;
12 import android.os.Message;
13 import android.app.Activity;
14 import android.view.Menu;
15 import android.view.View;
16 import android.widget.EditText;
17 import android.widget.Toast;
18 
19 public class MainActivity extends Activity {
20 
21     @Override
22     protected void onCreate(Bundle savedInstanceState) {
23         super.onCreate(savedInstanceState);
24         setContentView(R.layout.activity_main);
25     }
26 
27     Handler handler = new Handler(){
28         public void handleMessage(android.os.Message msg) {
29             Toast.makeText(MainActivity.this, (String)msg.obj, 0).show();
30         }
31     };
32     
33     public void click(View v){
34         EditText et_name = (EditText) findViewById(R.id.et_name);
35         EditText et_pass = (EditText) findViewById(R.id.et_pass);
36         
37         final String name = et_name.getText().toString();
38         final String pass = et_pass.getText().toString();
39         
40         Thread t = new Thread(){
41             @Override
42             public void run() {
43                 //提交的数据需要经过url编码，英文和数字编码后不变
44                 @SuppressWarnings("deprecation")
45                 String path = "http://192.168.13.13/Web2/servlet/LoginServlet?name=" + URLEncoder.encode(name) + "&pass=" + pass;
46                 
47                 try {
48                     URL url = new URL(path);
49                     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
50                     conn.setRequestMethod("GET");
51                     conn.setConnectTimeout(5000);
52                     conn.setReadTimeout(5000);
53                     
54                     if(conn.getResponseCode() == 200){
55                         InputStream is =conn.getInputStream();
56                         String text = Utils.getTextFromStream(is);
57                         
58                         Message msg = handler.obtainMessage();
59                         msg.obj = text;
60                         handler.sendMessage(msg);
61                     }
62                 } catch (Exception e) {
63                     // TODO Auto-generated catch block
64                     e.printStackTrace();
65                 }
66             }
67         };
68         t.start();
69         
70         
71         
72     }
73 
74 }

util

 1 import java.io.ByteArrayOutputStream;
 2 import java.io.IOException;
 3 import java.io.InputStream;
 4 
 5 public class Utils {
 6 
 7     public static String getTextFromStream(InputStream is){
 8         
 9         byte[] b = new byte[1024];
10         int len = 0;
11         //创建字节数组输出流，读取输入流的文本数据时，同步把数据写入数组输出流
12         ByteArrayOutputStream bos = new ByteArrayOutputStream();
13         try {
14             while((len = is.read(b)) != -1){
15                 bos.write(b, 0, len);
16             }
17             //把字节数组输出流里的数据转换成字节数组
18             String text = new String(bos.toByteArray());
19             return text;
20         } catch (IOException e) {
21             // TODO Auto-generated catch block
22             e.printStackTrace();
23         }
24         return null;
25     }
26 }