spring mvc获取header（请求头）

原文链接 ლ(°◕‵ƹ′◕ლ)

两种方法：

1.在方法参数中加入@RequestHeader

2.在类级别注入HttpServletRequest

建议使用第二种方法，这样可避免每个方法都加入HttpHeaders参数

@Controller
@RequestMapping("/hello")
public class HelloController {
 @Autowired
 private HttpServletRequest request;

 @RequestMapping(value="/printname/{name}", method=RequestMethod.GET)
 public String printName(@PathVariable String name,
      @RequestHeader HttpHeaders headers) {
      System.out.println("from request:" + request.getHeader("code"));
      System.out.println("from parameter:" + headers.getFirst("code"));
      return "hello";
 }
}



@Controller
public class HelloController {
 
    @RequestMapping(value = "/hello.htm")
    public String hello(@RequestHeader(value="User-Agent", defaultValue = "0") String userAgent)
 
                 System.out.println(userAgent);
    }
}