/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Project : MapleFetion2
* Package : net.solosky.maplefetion.util
* File : HttpHelper.java
* Author : solosky < solosky772@qq.com >
* Created : 2010-5-10
* License : Apache License 2.0
*/
package net.solosky.maplefetion.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.log4j.Logger;
/**
*
* HTTP工具类
* 因为飞信很多应用都是基于HTTP的，这个HTTP工具可以方便的完成HTTP操作
*
* @author solosky <solosky772@qq.com>
*/
public class HttpHelper
{
/**
* 创建默认的HTTP连接
* @param url URL
* @param method 方法 POST|GET
* @param ssic SSIC
* @return
* @throws IOException
*/
public static HttpURLConnection openConnection(String url, String method, String contentType, String ssic) throws IOException
{
URL realURL = new URL(url);
HttpURLConnection conn = (HttpURLConnection) realURL.openConnection();
//conn.setRequestProperty("User-Agent", "IIC2.0/PC "+FetionClient.PROTOCOL_VERSION);
conn.setRequestProperty("User-Agent", "IIC2.0/PC 4.0.0000");
conn.setRequestProperty("Cookie", "ssic="+ssic);
conn.setRequestProperty("Host", realURL.getHost());
conn.setRequestProperty("Accept", "*/*");
conn.setRequestProperty("Cache-Control", "no-cache");
if(contentType!=null) conn.setRequestProperty("Content-Type", contentType);
conn.setRequestMethod(method);
return conn;
}
/**
* 获取一个连接里面数据
* @param conn
* @return
* @throws IOException
*/
public static byte[] fetchData(HttpURLConnection conn) throws IOException
{
InputStream in = conn.getInputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buff = new byte[1024];
int len = 0;
while((len=in.read(buff, 0, 1024))!=-1){
out.write(buff, 0, len);
}
return out.toByteArray();
}
/**
* 发送数据到这个连接里
* @param conn
* @param in
* @throws IOException
*/
public static void sendData(HttpURLConnection conn, InputStream in) throws IOException
{
conn.setDoOutput(true);
OutputStream out = conn.getOutputStream();
byte[] buff = new byte[1024];
int len = 0;
while((len=in.read(buff, 0, 1024))!=-1){
out.write(buff, 0, len);
}
}
/**
* 获取一个连接的文本内容
* @param url
* @param method
* @param user
* @return
* @throws IOException
*/
public static String doFetchString(String url, String method, String ssic, InputStream in) throws IOException
{
return new String(doFetchData(url, method, "application/x-www-form-urlencoded", ssic, in));
}
/**
* 获取一个连接的数据
* @param url
* @param method
* @param user
* @param in
* @return
* @throws IOException
*/
public static byte[] doFetchData(String url, String method, String contentType, String ssic, InputStream in) throws IOException
{
HttpURLConnection conn = openConnection(url, method, contentType, ssic);
if(in!=null) sendData(conn, in);
if(conn.getResponseCode()==HttpURLConnection.HTTP_OK){
return fetchData(conn);
}else{
throw new IOException("Http response is not OK. code="+conn.getResponseCode());
}
}
/**
* 尝试获取指定地址的数据，会尝试指定的次数，如果成功马上返回
* @param url 地址
* @param method 方法
* @param ssic SSIC
* @param in 输入流，如果需要传输数据
* @param tryTimes 重试次数
* @return
*/
public static byte [] tryFetchData(String url, String method, String contentType, String ssic, InputStream in, int tryTimes)
{
for(int i=0; i<tryTimes; i++){
try {
return doFetchData(url, method, contentType, ssic, in);
} catch (IOException e) {
Logger.getLogger(HttpHelper.class).info("Fetch url data failed: "+e.getMessage()+" - doTryTimes:"+i+", maxTryTimes:"+tryTimes);
}
}
return null;
}
}