微信开发SDK使用教程--消息撤回

case "RevokeMessageTask": {// 消息撤回
log.debug("websocket:msgtype=RevokeMessageTask。。。。。");
revokeMessageTaskWebsocketHandler.handleMsg(ctx, vo, contentJsonStr);
break;
}

package com.jubotech.framework.netty.handler.websocket;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import com.google.protobuf.util.JsonFormat;
import com.jubotech.framework.netty.common.Constant;
import com.jubotech.framework.netty.utils.MessageUtil;
import com.jubotech.framework.netty.utils.NettyConnectionUtil;

import Jubo.JuLiao.IM.Wx.Proto.RevokeMessageTask.RevokeMessageTaskMessage;
import Jubo.JuLiao.IM.Wx.Proto.TransportMessageOuterClass.EnumErrorCode;
import Jubo.JuLiao.IM.Wx.Proto.TransportMessageOuterClass.EnumMsgType;
import Jubo.JuLiao.IM.Wx.Proto.TransportMessageOuterClass.TransportMessage;
import io.netty.channel.ChannelHandlerContext;

@Service
public class RevokeMessageTaskWebsocketHandler{
private final Logger log = LoggerFactory.getLogger(getClass());
/**
* 消息撤回---pc端经过服务端转发给手机端
* @author wechatno:tangjinjinwx
* @param ctx
* @param vo
*/
public void handleMsg(ChannelHandlerContext ctx,TransportMessage vo, String contentJsonStr) {
try {
log.info(contentJsonStr);
RevokeMessageTaskMessage.Builder bd = RevokeMessageTaskMessage.newBuilder();
JsonFormat.parser().merge(contentJsonStr, bd);
RevokeMessageTaskMessage req = bd.build();
//将消息转发送给手机客户端
ChannelHandlerContext cx= NettyConnectionUtil.getClientChannelHandlerContextByUserId(req.getWeChatId());
if(null != cx){
MessageUtil.sendMsg(cx, EnumMsgType.RevokeMessageTask, NettyConnectionUtil.getNettyId(ctx), null, req);
// 告诉发送方消息已收到
MessageUtil.sendJsonMsg(ctx, EnumMsgType.MsgReceivedAck, vo.getAccessToken(), vo.getId(), null);
}else{
// 对方不在线
MessageUtil.sendJsonErrMsg(ctx, EnumErrorCode.TargetNotOnline, Constant.ERROR_MSG_NOTONLINE);
}
} catch (Exception e) {
e.printStackTrace();
MessageUtil.sendJsonErrMsg(ctx, EnumErrorCode.InvalidParam, Constant.ERROR_MSG_DECODFAIL);
}
}
}

项目地址 http://www.wlkankan.cn/cate41/301.html
接口地址 http://www.yunlauncher.com/Blog/articles/119.html