SpringMvc获取请求头部信息

@RequestMapping(value="/spring1")
public String text(
@RequestHeader ("host") String hostName,
@RequestHeader ("Accept") String acceptType,
@RequestHeader ("Accept-Language") String acceptLang,
@RequestHeader ("Accept-Encoding") String acceptEnc,
@RequestHeader ("Cache-Control") String cacheCon,
@RequestHeader ("Cookie") String cookie,
@RequestHeader ("User-Agent") String userAgent){
System.out.println("Host : " + hostName);
System.out.println("Accept : " + acceptType);
System.out.println("Accept Language : " + acceptLang);
System.out.println("Accept Encoding : " + acceptEnc);
System.out.println("Cache-Control : " + cacheCon);
System.out.println("Cookie : " + cookie);
System.out.println("User-Agent : " + userAgent);
return "displayInfo";
}