springmvc获取request,response,session对象

在springboot有时候也需要获取request,response,session等对象，为了方便特封装一个父类,直接调用即可。

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 {

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

}