Angular 控制台日志未定义

此处未定义控制台日志

      this.http.get(this.rootURL + "/Report/"+id)
      .toPromise().then(res => this.report = res as Report);
      console.log(this.report);
  }  

这里是控制台日志数据

      this.http.get(this.rootURL + "/Report/"+id)
      .toPromise().then(res => console.log(res));
      console.log(this.report);
  }  

---

如何将结果分配给结果对象

将数据记录在

你在用wait吗

你应该这样做：

const main=async（）=>{
等待this.http.get（this.rootURL+“/Report/”+id）.toPromise（）。然后（data=>{
控制台日志（数据）；
})
}

您需要在

回调中执行其他操作，然后

回调，或者使用async/await.maybe高级复制

this.http.get(this.rootURL + "/Report/"+id)
  .toPromise()
  .then(res => {
    // Promise gets fulfilled and its response can be assigned
    this.report = res as Report;
    console.log(this.report);

    // Perform other actions
    // ...
  })
  .catch(reason => {
    // Something went wrong, your promise gets rejected
    console.log(reason);
  });