Question

我正在使用Java Maven Spring启动SpringMVC中的REST api。 SpringMVC @RequestParam不会看到Angular POST请求参数。这是Angular代码;

  saveAsSiteProduct(id: number, data: saveAsSiteProductSettings): Observable<any> {
    const options = new RequestOptions({ headers: new Headers({ 'Content-Type': 'application/json' }) });
    return this.http
      .post(this.amazonUrl + '/products/imported/' + id +'/saveas/siteproduct', JSON.stringify(data), options)
      .map(response => response.json());
  }

这是Java SpringMVC代码;

@PostMapping(value = "/products/imported/{id}/saveas/siteproduct", produces = MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody ResponseEntity<CustomHttpResponse> saveAsSiteProduct(
            @PathVariable Long id,
            @RequestParam Map<String, String> requestParams,
            @RequestParam("guid") String guid
            ) throws EncoderException, RestClientException {
...
}

但是我得到了回应;

{
    "timestamp": "2017-10-02T21:21:58.064+0000",
    "status": 400,
    "error": "Bad Request",
    "exception": "org.springframework.web.bind.MissingServletRequestParameterException",
    "message": "Required String parameter 'guid' is not present",
    "path": "/api/amazon/products/imported/1/saveas/siteproduct"
}

这就是我发布的内容;

{
createBrandIfNotExists : true
createManufacturerIfNotExists : true
guid : "asD"
}

我在Postman中测试了这个并且它有效。

Answer 1

我改为使用URLSearchParams并将内容类型更改为application/x-www-form-urlencoded。我是这样做的;

  saveAsSiteProduct(id: number, data: saveAsSiteProductSettings): Observable<any> {
    const options = new RequestOptions({ headers: new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' }) });
    const params = new URLSearchParams();
    for (var key in data) {
      params.set(key, data[key]);
    }
    return this.http
      .post(this.amazonUrl + '/products/imported/' + id +'/saveas/siteproduct', params, options)
      .map(response => response.json());
  }

Angular 4 http发布到Java SpringMVC;没有看到POST参数

1 个答案: