RestTemplate获取正文 [英] RestTemplate get with body

问题描述

如何使用REST模板制作Get With Body？

根据POST request via RestTemplate in JSON中的问题，我尝试通过HttpEntity对Body进行Make Get(只检查是否可能)，但是 接收失败：

缺少必需的请求正文

对于HttpMethod.POST：本地主机：8080/test/post正文已正确添加，但对于 HttpMethod.GETLocalhost：8080/test/Get它未映射。 我的代码如下：

@RestController
@SpringBootApplication
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }

  private final RestTemplate restTemplate = new RestTemplate();

  @GetMapping("/test/{api}")
  public SomeObject test(@PathVariable("api") String api) {
    String input = "{"value":"ok"}";

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    HttpEntity<String> entity = new HttpEntity<>(input, headers);

    HttpMethod method = "get".equals(api) ? HttpMethod.GET : HttpMethod.POST;
    String url = "http://localhost:8080/" + api;
    return restTemplate.exchange(url, method, entity, SomeObject.class).getBody();
  }

  @GetMapping("/get")
  public SomeObject getTestApi(@RequestBody(required = false) SomeObject someObject) {
    return new SomeObject() {{ setValue(someObject != null ? "ok" : "error"); }};
  }

  @PostMapping("/post")
  public SomeObject postTestApi(@RequestBody(required = false) SomeObject someObject) {
    return new SomeObject() {{ setValue(someObject != null ? "ok" : "error"); }};
  }

  @Data
  public static class SomeObject {
    private String value;
  }

}

以下是完整示例的回购：https://gitlab.com/bartekwichowski/git-with-body

我想知道，代码有什么问题？ 也适用于：HTTP GET with request body 与身体相处是可能的，但不是很好的练习。

推荐答案

我发现这个记不住了。这不是一种好的做法，但如果在您所处的环境中没有其他机会：

private static final class HttpComponentsClientHttpRequestWithBodyFactory extends HttpComponentsClientHttpRequestFactory {
    @Override
    protected HttpUriRequest createHttpUriRequest(HttpMethod httpMethod, URI uri) {
        if (httpMethod == HttpMethod.GET) {
            return new HttpGetRequestWithEntity(uri);
        }
        return super.createHttpUriRequest(httpMethod, uri);
    }
}

private static final class HttpGetRequestWithEntity extends HttpEntityEnclosingRequestBase {
    public HttpGetRequestWithEntity(final URI uri) {
        super.setURI(uri);
    }

    @Override
    public String getMethod() {
        return HttpMethod.GET.name();
    }
}

当您获取rest Template对象时

restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestWithBodyFactory());

这篇关于RestTemplate获取正文的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！