套接字为单个请求创建多个数据

Question

我已经编写了一个socket.io代码，用于实时跟踪错误跟踪工具。但是，如果有人发表评论，则相同的数据将被多次创建。我也得到同样的评论。

请在下面的nodejs中通过socket.io代码查看

socket.on('new-comment', (data)=>{
            data['commentId'] = shortid.generate()
            eventEmitter.emit('save-comment', data)
        }) // end of on new comment


        eventEmitter.on('save-comment', (data)=>{

            let newComment = new CommentModel({
                commentId: data.commentId,
                comment: data.comment,
                commentedBy: data.commentedBy,
                createdOn: time.now(),
                issueId: data.issueId
            })

            newComment.save((err, result)=>{
                if(err){
                    console.log(`Error occured: ${err}`)
                } else if(check.isEmpty(result)){
                    console.log("No Comments to be Saved")
                } else {
                    console.log("Comment saved")
                    console.log(result)
                }
            })

这是我的angular套接字服务中的代码，用于发布评论

public postComment: any = (commentDetails) =>{
    this.socket.emit('new-comment', commentDetails)
  } // end on new-comment

我组件中的代码以处理此功能

public postComment: any = () =>{
    if(this.comment){
      let userComment = {
        comment: this.comment,
        commentedBy: this.currentUser.firstName+' '+this.currentUser.lastName,
        createdOn: Date.now(),
        issueId: this.currentIssueId
      }
        this.socket.postComment(userComment)
        this.currentComments.push(userComment)
        this.watchersList.push(Cookie.get('fullName'))
    } else {
      this.toastr.errorToastr("Cannot post empty comments")
    }
  } // end post comment

让我知道我要去哪里错了