【Java】HttpPost 类

package com.example.jtuzi.myapplication;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AlertDialog;

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


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

HttpPost11(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();
System.out.println("准备输出结果");
response.sendToTarget();
Handler
} 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();
}
}
}