spring mvc獲取header

兩種方法： 
1.在方法參數中加入@RequestHeader 
2.在類級別注入HttpServletRequest 
建議使用第二種方法，這樣可避免每個方法都加入HttpHeaders參數 

 1 @Controller
 2 @RequestMapping("/hello")
 3 public class HelloController {
 4      @Autowired
 5      private HttpServletRequest request;
 6     
 7      @RequestMapping(value="/printname/{name}", method=RequestMethod.GET)
 8      public String printName(@PathVariable String name,
 9               @RequestHeader HttpHeaders headers) {
10           System.out.println("from request:" + request.getHeader("code"));
11           System.out.println("from parameter:" + headers.getFirst("code"));
12          
13           return "hello";
14      }
15 }

 

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
//..
 
@Controller
public class HelloController {
 
    @RequestMapping(value = "/hello.htm")
    public String hello(@RequestHeader(value="User-Agent") String userAgent)
 
        //..
    }
}