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📄 downloadgroupfriendreplypacket.java

📁 很多人都在开发的QQ代码
💻 JAVA
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/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <stubma@163.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package edu.tsinghua.lumaqq.qq.packets.in;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import edu.tsinghua.lumaqq.qq.PacketParseException;
import edu.tsinghua.lumaqq.qq.beans.DownloadFriendEntry;
import edu.tsinghua.lumaqq.qq.packets.InPacket;

/**
 * <pre>
 * 请求下载分组好友列表的回复包,格式为
 * 1. 头部
 * 2. 操作字节,下载为0x1
 * 3. 9个未知字节,全0
 * 4. 好友的QQ号,4字节
 * 5. 好友类型,0x1表示普通好友,0x4表示群
 * 6. 分组序号,1字节,但是这个很奇怪,不是1,2,3那样的,而是用序号乘4,比如如果是属于第2个组,
 *    那么这个就是8,注意我的好友组是第0组,但是有可能这个数字不是4的倍数,那就不知道什么
 *    意思了,但是除以4得到组序号的方法仍然不受影响
 * 7. 如果还有更多好友,重复4,5,6部分
 * 8. 尾部
 * 
 * 这个包解析后产生的数据可以通过哈希表friends访问,每一个组为一个list,用组的索引为key,
 * 比如第0,第1组,分别可以得到一个List对象,list中包含了好友的qq号
 * </pre>
 * 
 * @author 马若劼
 */
public class DownloadGroupFriendReplyPacket extends InPacket {
	public List friends;
	
    /**
     * 构造函数
     * @param buf 缓冲区
     * @param length 包长度
     * @throws PacketParseException 解析错误
     */
    public DownloadGroupFriendReplyPacket(ByteBuffer buf, int length) throws PacketParseException {
        super(buf, length);
    }   
	
    /* (non-Javadoc)
     * @see edu.tsinghua.lumaqq.qq.packets.InPacket#parseBody(java.nio.ByteBuffer)
     */
    protected void parseBody(ByteBuffer buf) throws PacketParseException {
		// 跳过前面的操作类型字节的未知的9个字节
        buf.position(buf.position() + 10);
		// 循环读取各好友信息,加入到list中
        friends = new ArrayList();
		while(buf.hasRemaining()) {
			DownloadFriendEntry dfe = new DownloadFriendEntry();
			dfe.readBean(buf);
			friends.add(dfe);
		}
    }
}

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