public class GetPostUtil {  /**   * 向指定URL发送GET方法的请求   *   * @param url   *            发送请求的URL   * @param params   *            请求参数，请求参数应该是name1=value1&name2=value2的形式。   * @return URL所代表远程资源的响应   */  public static String sendGet(String url, String params)  {   String result = "";   BufferedReader in = null;   try   {    String urlName = url + "?" + params;    URL realUrl = new URL(urlName);    // 打开和URL之间的连接    URLConnection conn = realUrl.openConnection();    // 设置通用的请求属性    conn.setRequestProperty("accept", "*/*");    conn.setRequestProperty("connection", "Keep-Alive");    conn.setRequestProperty("user-agent",     "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");    // 建立实际的连接    conn.connect();    // 获取所有响应头字段    Map<String, List<String>> map = conn.getHeaderFields();    // 遍历所有的响应头字段    for (String key : map.keySet())    {     System.out.println(key + "--->" + map.get(key));    }    // 定义BufferedReader输入流来读取URL的响应    in = new BufferedReader(     new InputStreamReader(conn.getInputStream()));    String line;    while ((line = in.readLine()) != null)    {     result += "\n" + line;    }   }   catch (Exception e)   {    System.out.println("发送GET请求出现异常！" + e);    e.printStackTrace();   }   // 使用finally块来关闭输入流   finally   {    try    {     if (in != null)     {      in.close();     }    }    catch (IOException ex)    {     ex.printStackTrace();    }   }   return result;  }  /**   * 向指定URL发送POST方法的请求   *   * @param url   *            发送请求的URL   * @param params   *            请求参数，请求参数应该是name1=value1&name2=value2的形式。   * @return URL所代表远程资源的响应   */  public static String sendPost(String url, String params)  {   PrintWriter out = null;   BufferedReader in = null;   String result = "";   try   {    URL realUrl = new URL(url);    // 打开和URL之间的连接    URLConnection conn = realUrl.openConnection();    // 设置通用的请求属性    conn.setRequestProperty("accept", "*/*");    conn.setRequestProperty("connection", "Keep-Alive");    conn.setRequestProperty("user-agent",     "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");    // 发送POST请求必须设置如下两行    conn.setDoOutput(true);    conn.setDoInput(true);    // 获取URLConnection对象对应的输出流    out = new PrintWriter(conn.getOutputStream());    // 发送请求参数    out.print(params);    // flush输出流的缓冲    out.flush();    // 定义BufferedReader输入流来读取URL的响应    in = new BufferedReader(     new InputStreamReader(conn.getInputStream()));    String line;    while ((line = in.readLine()) != null)    {     result += "\n" + line;    }   }   catch (Exception e)   {    System.out.println("发送POST请求出现异常！" + e);    e.printStackTrace();   }   // 使用finally块来关闭输出流、输入流   finally   {    try    {     if (out != null)     {      out.close();     }     if (in != null)     {      in.close();     }    }    catch (IOException ex)    {     ex.printStackTrace();    }   }   return result;  } }

public class GetPostMain extends Activity {  Button get , post;  EditText show;  @Override  public void onCreate(Bundle savedInstanceState)  {   super.onCreate(savedInstanceState);   setContentView(R.layout.main);   get = (Button) findViewById(R.id.get);   post = (Button) findViewById(R.id.post);   show = (EditText)findViewById(R.id.show);   //利用Handler更新UI   final Handler h = new Handler(){    @Override    public void handleMessage(Message msg) {     if(msg.what==0x123){      show.setText(msg.obj.toString());     }    }   };   get.setOnClickListener(new OnClickListener()   {    @Override    public void onClick(View v)    {     new Thread(new AccessNetwork("GET", "http://192.168.1.88:8080/abc/a.jsp", null, h)).start();    }      });   post.setOnClickListener(new OnClickListener()   {    @Override    public void onClick(View v)    {     new Thread(new AccessNetwork("POST", "http://192.168.1.88:8080/abc/login.jsp", "name=crazyit.org&pass=leegang", h)).start();    }      });   } } class AccessNetwork implements Runnable{  private String op ;  private String url;  private String params;  private Handler h;  public AccessNetwork(String op, String url, String params,Handler h) {   super();   this.op = op;   this.url = url;   this.params = params;   this.h = h;  }  @Override  public void run() {   Message m = new Message();   m.what = 0x123;   if(op.equals("GET")){    Log.i("iiiiiii","发送GET请求");    m.obj = GetPostUtil.sendGet(url, params);    Log.i("iiiiiii",">>>>>>>>>>>>"+m.obj);   }   if(op.equals("POST")){    Log.i("iiiiiii","发送POST请求");    m.obj = GetPostUtil.sendPost(url, params);    Log.i("gggggggg",">>>>>>>>>>>>"+m.obj);   }   h.sendMessage(m);  } }