知识领域+技术关键词+烦人的代码

package com.yll.web; import com.alibaba.dubbo.config.annotation.Reference; import com.github.pagehelper.PageInfo; import com.yll.domain.Student; import com.yll.service.UserService; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import javax.servlet.http.HttpServletRequest; import java.util.List; @Controller @RequestMapping("/student") public class StudentController { @Reference private UserService userService; @RequestMapping("/findById") public String findStudent(int id, HttpServletRequest request){ Student student = userService.findStudent(id); if(student==null){ request.setAttribute("message_findById","查无此人！"); return "forward:/student.jsp"; } request.setAttribute("stu",student); return "forward:/itemDetail.jsp"; } @RequestMapping("/add") public String add(String name,String age,HttpServletRequest request){ userService.add(name,age); request.setAttribute("msg_add","添加成功"); return "forward:/student.jsp"; } @RequestMapping("/findAll") public String findAll(@RequestParam(name="pageNum",defaultValue = "1") Integer pageNum,@RequestParam(name="pageSize",defaultValue = "5") Integer pageSize, HttpServletRequest request){ PageInfo<Student> pageInfo = userService.findByPage(pageNum, pageSize); if (pageInfo==null){ request.setAttribute("message_findAll","数据库空空如也"); return "forward:/student.jsp"; } request.setAttribute("page",pageInfo); return "forward:/allStu.jsp"; } }