@property(nonatomic,strong)XMPPJID * friendJid;
//添加好友
[[WCXMPPTool sharedWCXMPPTool].roster subscribePresenceToUser:_friendJid];
@property(nonatomic,strong)XMPPJID * friendJid;
//添加好友
[[WCXMPPTool sharedWCXMPPTool].roster subscribePresenceToUser:_friendJid];