Android Http Get Post

 public class MyHttpUrlCon {

     public static String settionId = "";

     public static final int TIMEOUT = ;//

     public ReturnData doGet(String urlString) {
         HttpURLConnection conn = null;
         try {

             URL url = new URL(urlString);
             conn = (HttpURLConnection) url.openConnection();
             conn.setConnectTimeout();
             conn.setReadTimeout();
             conn.setRequestMethod("GET");
             conn.setRequestProperty("cookie", settionId);
             conn.connect();

             if (conn.getHeaderField("set-cookie") != null) {
                 settionId = conn.getHeaderField("set-cookie");
                 Log.d("mm", "Constants.settionId:" + settionId);
             } else {
                 return new ReturnData(ReturnData.TimeOut, "");
             }

             if (conn.getResponseCode() == ) {
                 InputStream is = conn.getInputStream();
                 BufferedReader bf = new BufferedReader(
                         new InputStreamReader(is));
                 String line = "";
                 StringBuilder sb = new StringBuilder();
                 while ((line = bf.readLine()) != null) {
                     sb.append(line);
                 }
                 String jsonString = sb.toString().replace("\n", "\\n")
                         .replace("\r", "\\r");
                 String jsonStr = jsonString.substring(jsonString.indexOf("{"),
                         jsonString.length());

                 return new ReturnData(ReturnData.Succee, jsonStr);

             } else {
                 return new ReturnData(ReturnData.NoRespond, "");
             }

         } catch (IOException e) {
             // TODO Auto-generated catch block
             e.printStackTrace();
             return new ReturnData(ReturnData.NoRespond, "");
         } finally {
             if (conn != null) {
                 conn.disconnect();
             }
         }
     }

     public ReturnData doPost(String urlString, String params) {
         URL url;
         HttpURLConnection conn = null;
         InputStream input = null;
         try {
             url = new URL(urlString);
             conn = (HttpURLConnection) url.openConnection();
             conn.setConnectTimeout(); // 请求超时
             conn.setRequestMethod("POST"); // 请求方式
             conn.setReadTimeout(); // 读取超时
             conn.setDoOutput(true);
             conn.setDoInput(true);
             conn.setUseCaches(false);
             conn.setRequestProperty("Charset", "UTF-8");
             conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
             // conn.setRequestProperty("cookie", settionId);
             OutputStream os = conn.getOutputStream();
             System.out.println("请求的参数" + params);
             os.write(params.getBytes("utf-8"));
             os.close();

             if (conn != null) {
                 int code = conn.getResponseCode();
                 System.out.println(code + ":");
                 if (code == ) {
                     input = conn.getInputStream();
                     BufferedReader bf = new BufferedReader(
                             new InputStreamReader(input));
                     String line = "";
                     StringBuilder sbuilder = new StringBuilder();
                     while ((line = bf.readLine()) != null) {
                         sbuilder.append(line);
                     }
                     System.out.println(sbuilder.toString());
                     String jsonString = sbuilder.toString()
                             .replace("\n", "\\n").replace("\r", "\\r");
                     String jsonStr = jsonString.substring(
                             jsonString.indexOf("{"), jsonString.length());
                     return new ReturnData(ReturnData.Succee, jsonStr);
                 } else {
                     return new ReturnData(ReturnData.NoRespond, "");
                 }
             } else {
                 return new ReturnData(ReturnData.NoRespond, "");
             }
         } catch (Exception e) {
             e.printStackTrace();
             return new ReturnData(ReturnData.NoRespond, "");
         } finally {
             if (conn != null) {
                 conn.disconnect();
             }
         }
     }

 }

public class ReturnData {

public final static int ParserError = -3;
public final static int ParamsError = -2;
public final static int False = -1;
public final static int Succee = 0;
public final static int TimeOut = 1;
public final static int NoRespond = 2;

// 网络请求标记
private int code;
// 返回数据
private String data;

public ReturnData(int code, String data) {
this.code = code;
this.data = data;
}

/**
* 网络请求标记
*
* @return
*/
public int getCode() {
return code;
}

/**
* 网络请求标记
*
* @param code
*/
public void setCode(int code) {
this.code = code;
}

/**
* 返回数据
*
* @return
*/
public String getData() {
return data;
}

/**
* 返回数据
*
* @param data
*/
public void setData(String data) {
this.data = data;
}

}