springmvc獲取request,response,session對象

在springboot有時候也需要獲取request,response,session等對象，爲了方便特封裝一個父類,直接調用即可。

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public class BaseController {

    /**
     * 獲取request對象
     */
    public HttpServletRequest getRequest() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }
    
    /**
     * 獲取Response對象
     */
    public HttpServletResponse getResponse() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
    }
    
    /**
     * 獲取Session對象
     */
    public HttpSession getSession() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest().getSession();
    }

}