忘記從地址中獲取值，debug一下就知道哪裏有問題

@Controller
public class EmployeeController 
{
	
	@Autowired
	EmployeeService employeeService;


	/**
	 * 編輯修改查詢員工信息
	 * id變量來源於地址   @PathVariable("id")
	 * @param id
	 * @return
	 */
	@RequestMapping(value = "/emp/{id}",method = RequestMethod.GET)
	@ResponseBody
	public Msg getEmp(@PathVariable("id") Integer id){

		Employee employee = employeeService.getEmp(id);
		return Msg.success().add("emp",employee);

	}