安卓Http Post请求封装类

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

/**
* Created by xilingyuli on 2015/11/26.
*/
public class HttpPost extends Thread{

private String connStr;  //连接字符串
private String method;  //方法名
private String data;  //发送的数据
private Message response;  //返回的数据

HttpPost(String connStr, String method, String data, Message response)
{
this.connStr = connStr;
this.method = method;
this.data = data;
this.response = response;
}

public void run()
{
if(connStr==null||connStr.equals("")||data==null)
return;
try {

byte b[] = data.getBytes("utf-8");

URL url;
if(method!=null)
url = new URL(connStr+"/"+method);
else
url = new URL(connStr);

//设置参数
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.setConnectTimeout(5000);
con.setUseCaches(false);
con.setDoOutput(true);
con.setDoInput(true);
con.setRequestMethod("POST");

//设置header
con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

//写入数据
OutputStream os = con.getOutputStream();
os.write(b);
os.flush();
os.close();

if(response==null)
return;

//处理返回的结果
/*
* message.what是请求码，若请求码不是200，则返回
* 若请求码是200，请求成功，则封装数据。有方法名时数据key值为方法名，否则key值为"data"
* 若出现异常，则数据key值为"error"，value为异常详细信息
*/
response.what = con.getResponseCode();
if(response.what==HttpURLConnection.HTTP_OK)
{
//向bos写入返回的数据
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte buffer[] = new byte[1024];
InputStream is = con.getInputStream();
int count = -1;
while ((count = is.read(buffer, 0, buffer.length)) != -1)
bos.write(buffer, 0, count);
is.close();

//封装数据
Bundle bd = new Bundle();
if(method!=null)
bd.putString(method, bos.toString("utf-8"));
else
bd.putString("data", bos.toString("utf-8"));
response.setData(bd);
}
con.disconnect();
response.sendToTarget();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();

//处理异常
if(response==null)
return;
Bundle bd = new Bundle();
bd.putString("error",e.getMessage());
response.setData(bd);
response.sendToTarget();
}
}
}