如何在Spring Boot RestController中获取请求URL

Question

我试图在RestController中获取请求URL.RestController有多个注释@RequestMapping用于不同URI的方法,我想知道如何从@RequestMapping注释中获取绝对URL .

@RestController
@RequestMapping(value = "/my/absolute/url/{urlid}/tests"
public class Test {
   @ResponseBody
   @RequestMapping(value "/",produces = "application/json")
   public String getURLValue(){
      //get URL value here which should be in this case, for instance if urlid      
       //is 1 in request then  "/my/absolute/url/1/tests"
      String test = getURL ?
      return test;
   }
} 

Answer 1

您可以尝试HttpServletRequest向该getUrlValue()方法添加其他类型的参数:

@RequestMapping(value ="/",produces = "application/json")
public String getURLValue(HttpServletRequest request){
    String test = request.getRequestURI();
    return test;
}

Answer 2

如果您不希望依赖Spring的HATEOAS或javax.*命名空间,请使用ServletUriComponentsBuilder获取当前请求的URI:

import org.springframework.web.util.UriComponentsBuilder;

ServletUriComponentsBuilder.fromCurrentRequest();
ServletUriComponentsBuilder.fromCurrentRequestUri();

Answer 3

允许获取系统上的任何URL,而不仅仅是当前的URL.

import org.springframework.hateoas.mvc.ControllerLinkBuilder
...
ControllerLinkBuilder linkBuilder = ControllerLinkBuilder.linkTo(methodOn(YourController.class).getSomeEntityMethod(parameterId, parameterTwoId))

URI methodUri = linkBuilder.Uri()
String methodUrl = methodUri.getPath()

Answer 4

将类型参数添加UriComponentsBuilder到控制器方法中。Spring 将为您提供一个预先配置了当前请求的 URI 的实例，然后您可以自定义它（例如使用MvcUriComponentsBuilder.relativeTo相同的前缀指向不同的控制器）。