Angular2 - Http POST 请求参数

# Angular 2 中的 HTTP POST 请求参数及案例代码

typescript
import { HttpClientModule } from '@angular/common/http';
@NgModule({
  imports: [
    // 其他模块
    HttpClientModule,
  ],
  // ...
})
export class AppModule { }

typescript
import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Injectable } from '@angular/core';
@Injectable({
  providedIn: 'root',
})
export class DataService {
  private apiUrl = 'https://example.com/api';
  constructor(private http: HttpClient) {}
  postData(data: any) {
    // 设置请求头
    const headers = new HttpHeaders({
      'Content-Type': 'application/json',
    });
    // 发起POST请求
    return this.http.post(`${this.apiUrl}/endpoint`, data, { headers });
  }
}

typescript
// 调用postData方法
this.dataService.postData({ username: 'john_doe', password: 'secret' })
  .subscribe(response => {
    // 处理服务器响应
    console.log(response);
  });

typescript
import { Injectable } from '@angular/core';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class MyInterceptor implements HttpInterceptor {
  intercept(req: HttpRequest, next: HttpHandler): Observable> {
    // 在请求被发送之前进行处理
    // 可以在此处添加请求头、修改请求体等
    // 继续处理请求
    return next.handle(req);
  }
}

typescript
import { HTTP_INTERCEPTORS } from '@angular/common/http';
@NgModule({
  // ...
  providers: [
    // ...
    { provide: HTTP_INTERCEPTORS, useClass: MyInterceptor, multi: true },
  ],
})
export class AppModule { }