记录一个Spring MVC Controller层，跳转到前端页面以及返回参数的包装类

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以下两个为常用方法

1. 进入到前端页面的方法为 createMav()

2. 返回ajax请求的方法为 successResponse()

代码实现如下：

import java.util.HashMap;import java.util.Map;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.context.request.RequestContextHolder;import org.springframework.web.context.request.ServletRequestAttributes;import org.springframework.web.servlet.ModelAndView;import com.fasterxml.jackson.annotation.JsonInclude;import com.fasterxml.jackson.annotation.JsonInclude.Include;/** Created by HUYONG on 2017/9/8*/public abstract class BaseController {   public HttpServletRequest getRequest() {      HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder              .getRequestAttributes()).getRequest();      return request;   }   public HttpServletResponse getResponse() {      HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder              .getRequestAttributes()).getResponse();      return response;   }   public Result successResponse() {      return successResponse(null);   }      public Result successResponse(Map<String, Object> model) {      Result result = new Result();      result.setRet(200);      result.setMsg("success");      result.setModel(model);      return result;   }      public Result successResponse(Map<String, Object> model, String msg) {      Result result = new Result();      result.setRet(200);      result.setMsg(msg);      result.setModel(model);      return result;   }   public ModelAndView createMav(String viewName, Map<String, ?> model) {      return new ModelAndView(viewName, model);   }   public int getStart(Integer start){      return start == null? 0 : start.intValue();   }   public int getLimit(Integer limit){      return limit == null? 10 : limit.intValue();   }   @JsonInclude(Include.NON_NULL)   public static class Result {      private int ret;      private String msg;            private Map<String, Object> model;      public int getRet() {         return ret;      }      public void setRet(int ret) {         this.ret = ret;      }      public String getMsg() {         return msg;      }      public void setMsg(String msg) {         this.msg = msg;      }      public Map<String, Object> getModel() {         return model;      }      public void setModel(Map<String, Object> model) {         this.model = model;      }      public void addModel(String key, Object object) {         if (model == null) {            model = new HashMap<>();         }         model.put(key, object);      }   }}

controller层具体使用如下

@Controller@RequestMapping("/admin/courseMt")public class CourseMaintenanceController extends BaseController{       /**     * 进入web-inf 目录下的admin目录的index.jsp ,并传递参数 a  ,index 页面 用 ${a} 获取     * @return     */    @RequestMapping("/index")    public ModelAndView index(){        Map<String,Object> map = Maps.newConcurrentMap();        map.put("a","1");        return createMav("admin/index",map);    }    /**     * 返回前端JS发送ajax请求响应 ， 由于 BaseController 进行封装，所以ajax返回数据用 data.model.a 获取     * @return     */    @RequestMapping("/getCourseMtList")    @ResponseBody    public Result getCourseMtList(int pageNum,int pageSize){        Map<String,Object> map = Maps.newConcurrentMap();        map.put("a","1");        return successResponse(map);    }

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