Spring MVC获取请求header的方法

在Spring MVC有两种方法可以用来获取请求头Header的值。

方法一、通过在方法的参数添加注解@RequestHeader

示例如下：

@Controller
public class RequestHeaderDemoController {
     @Autowired
     private HttpServletRequest request;
     @GetMapping("/printheader")
     public String printHeader(@RequestHeader HttpHeaders headers) {
          System.out.println("from parameter:" + headers.getFirst("myheader"));
          return "demo";
     }
}

或者在注解@RequestHeader指定获取的header：

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
//..
@Controller
public class DemoController {
    @GetMapping(value = "/demo")
    public String hello(@RequestHeader(value="myheader") String myheader)
        //..
    }
}

方法二、从HttpServletRequest获取请求头信息

示例如下：

@Controller
public class RequestHeaderDemoController {
     @Autowired
     private HttpServletRequest request;
     @GetMapping("/printheader")
     public String printHeader(HttpServetRequest request) {
          System.out.println("from parameter:" + request.getHeader("myheader"));
          return "demo";
     }
}