在Angular中,getter和setter实际上是JavaScript中的属性访问器,它们可以用来定义属性的读取和写入行为。在post请求中,JSON数据会被转换为字符串,并且在传输过程中会丢失getter和setter的行为。为了解决这个问题,你可以使用自定义的转换器来处理getter和setter。
import { Injectable } from '@angular/core';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class JsonInterceptor implements HttpInterceptor {
intercept(req: HttpRequest, next: HttpHandler): Observable> {
const body = JSON.stringify(req.body, (key, value) => {
if (typeof value === 'function') {
return value.toString();
}
return value;
});
const jsonReq = req.clone({ body });
return next.handle(jsonReq);
}
}
import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { JsonInterceptor } from './json-interceptor';
@NgModule({
imports: [HttpClientModule],
providers: [
{ provide: HTTP_INTERCEPTORS, useClass: JsonInterceptor, multi: true }
]
})
export class YourModule { }
import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
@Injectable()
export class YourService {
constructor(private http: HttpClient) { }
postRequest(data: any) {
return this.http.post('your-url', data);
}
}
这样,无论你传递的数据中是否包含getter和setter,它们都会被正确地转换为字符串并在post请求中发送。