Question

我有角度2 rc1 http get方法的问题：

提供的参数与呼叫目标的任何签名都不匹配。

export class BaMsgCenter {
  public messages;
  public data_error: Boolean = false;
  constructor(private _baMsgCenterService:BaMsgCenterService) {
      this.messages = this._baMsgCenterService.getMessages().subscribe(
        (messages: Array<any>) => { 
          debugger;
          let result:Array<Message> = [];
          if (messages) {
            messages.forEach((message) => {
              result.push(
                 new Message(message[0], 
                          message[1],
                          message[2],
                          message[3],
                          message[4])
                 );
            });
          }
        return messages; 
        },
      err => { this.data_error = true}
        );
      }
}

然后：

export class Message {
    id: number;
    message: string;
    send_date: string;
    status: number;
    from: string;
}

消息类：

new Message(message[0], (...)

错误符合：[[1,"Title",1468669921000,0,"Siva"],[2,"Title",1468669934000,0,"Siva2"]]。可能这与承诺有关，但我不知道如何解决它。我想将json数组解析为object，如：

{{1}}

有些想法？

谢谢！

Answer 1

您的Message类没有构造函数。你应该写：

export class Message {
   constructor(public id: number,
       public message: string,
       public send_date: string,
       public status: number,
       public from: string) {}
}

Angular2 RC1错误＆＃34;提供的参数与呼叫目标的任何签名都不匹配＆＃34;

1 个答案: