如何獲取控制器中的requestmapping值？

Question

在控制器中，我有這個代碼， 不知何故，我想獲得請求映射值「搜索」。 這怎麼可能？

@RequestMapping("/search/")  
public Map searchWithSearchTerm(@RequestParam("name") String name) {  
     // more code here  
} 

Answer 1

一種方法是從servlet路徑中獲取它。

@RequestMapping("/search/")  
public Map searchWithSearchTerm(@RequestParam("name") String name, HttpServletRequest request) {  
String mapping = request.getServletPath(); 
     // more code here  
} 

Answer 2

@RequestMapping("foo/bar/blub")  
public Map searchWithSearchTerm(@RequestParam("name") String name, HttpServletRequest request) { 
    // delivers the path without context root 
    // mapping = "/foo/bar/blub" 
    String mapping = request.getPathInfo(); 
    // more code here 
} 

Answer 3

如果你想要的圖案，你可以嘗試HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE：

@RequestMapping({"/search/{subpath}/other", "/find/other/{subpath}"}) 
public Map searchWithSearchTerm(@PathVariable("subpath") String subpath, 
              @RequestParam("name") String name) { 

    String pattern = (String) request.getAttribute(
           HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE); 
    // pattern will be either "/search/{subpath}/other" or 
    // "/find/other/{subpath}", depending on the url requested 
    System.out.println("Pattern matched: "+pattern); 

} 

Answer 4

擁有一個像

@Controller 
@RequestMapping(value = "/web/objet") 
public class TestController { 

    @RequestMapping(value = "/save") 
    public String save(...) { 
     .... 
    } 
} 

控制器，你不能使用反射

得到控制的基礎requestMapping

// Controller requestMapping 
String controllerMapping = this.getClass().getAnnotation(RequestMapping.class).value()[0]; 

與反射

或方法requestMapping（從一個方法內部）太

//Method requestMapping 
String methodMapping = new Object(){}.getClass().getEnclosingMethod().getAnnotation(RequestMapping.class).value()[0]; 

顯然與工作在requestMapping單個值。

希望這會有所幫助。

Answer 5

春3.1及以上，你可以使用ServletUriComponentsBuilder

@RequestMapping("/search/")  
    public ResponseEntity<?> searchWithSearchTerm(@RequestParam("name") String name) { 
     UriComponentsBuilder builder = ServletUriComponentsBuilder.fromCurrentRequest(); 
     System.out.println(builder.buildAndExpand().getPath()); 
     return new ResponseEntity<String>("OK", HttpStatus.OK); 
    }