Android Http Get Post

public class MyHttpUrlCon {

    public static String settionId = "";

    public static final int TIMEOUT = 30;//

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

            URL url = new URL(urlString);
            conn = (HttpURLConnection) url.openConnection();
            conn.setConnectTimeout(10000);
            conn.setReadTimeout(10000);
            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() == 200) {
                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(10000); // 请求超时
            conn.setRequestMethod("POST"); // 请求方式
            conn.setReadTimeout(1000); // 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 == 200) {
                    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;
}

}