spring+SpringMVC+Spring Data JPA+Maven（增删该查功能齐全）

package com.atguigu.sssp.handler; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import com.atguigu.sssp.entity.Employee; import com.atguigu.sssp.service.DepartmentService; import com.atguigu.sssp.service.EmployeeService; @Controller public class EmployeeHandler { @Autowired private EmployeeService employeeService; @Autowired private DepartmentService departmentService; @RequestMapping(value="/") public String input(){ System.out.println("11111111111111111111111111111"); return "emp/input"; } @RequestMapping(value="/emp/{id}",method=RequestMethod.DELETE) public String delete(@PathVariable("id") Integer id){ employeeService.delete(id); return "redirect:/emps"; } @ModelAttribute public void getEmployee(@RequestParam(value="id",required=false) Integer id, Map<String, Object> map){ if(id != null){ Employee employee = employeeService.get(id); employee.setDepartment(null); map.put("employee", employee); } } @RequestMapping(value="/emp/{id}",method=RequestMethod.PUT) public String update(Employee employee){ employeeService.save(employee); return "redirect:/emps"; } @RequestMapping(value="/emp/{id}", method=RequestMethod.GET) public String input(@PathVariable("id") Integer id, Map<String, Object> map){ Employee employee = employeeService.get(id); map.put("employee", employee); map.put("departments", departmentService.getAll()); return "emp/input"; } @RequestMapping(value="/emp",method=RequestMethod.POST) public String save(Employee employee){ employeeService.save(employee); return "redirect:/emps"; } @ResponseBody @RequestMapping(value="/ajaxValidateLastName",method=RequestMethod.POST) public String validateLastName(@RequestParam(value="lastName",required=true) String lastName){ Employee employee = employeeService.getByLastName(lastName); if(employee == null){ return "0"; }else{ return "1"; } } @RequestMapping(value="/emp",method=RequestMethod.GET) public String input(Map<String,Object> map){ map.put("departments", departmentService.getAll()); map.put("employee", new Employee()); return "emp/input"; } @RequestMapping("/emps") public String list(@RequestParam(value="pageNo", required=false, defaultValue="1") String pageNoStr, Map<String, Object> map){ int pageNo = 1; try { //�� pageNo ���� pageNo = Integer.parseInt(pageNoStr); if(pageNo < 1){ pageNo = 1; } } catch (Exception e) {} Page<Employee> page = employeeService.getPage(pageNo, 5); map.put("page", page); return "emp/list"; } }