Angular2中如何处理双重提交

# 处理Angular 2中的双重提交问题

typescript
import { Component } from '@angular/core';
import { Observable, Subject } from 'rxjs';
import { debounceTime, switchMap } from 'rxjs/operators';
@Component({
  selector: 'app-double-submit',
  template: `
    提交
  `
})
export class DoubleSubmitComponent {
  private submitSubject = new Subject();
  constructor() {
    this.setupSubmitObservable();
  }
  handleSubmit() {
    this.submitSubject.next();
  }
  private setupSubmitObservable() {
    this.submitSubject.pipe(
      debounceTime(300), // 在300毫秒内只接受一次点击
      switchMap(() => this.fakeApiCall()) // 切换到新的Observable，代表API调用
    ).subscribe(response => {
      console.log('请求成功：', response);
      // 在这里处理成功的逻辑
    }, error => {
      console.error('请求失败：', error);
      // 在这里处理失败的逻辑
    });
  }
  private fakeApiCall(): Observable {
    // 模拟异步API调用，实际应用中替换为真实的HTTP请求
    return new Observable(observer => {
      setTimeout(() => {
        observer.next('成功');
        observer.complete();
      }, 1000);
    });
  }
}