有时候很懒，不喜欢去一个个 操作数据库添加，比如权限操作，就想一次性初始一下数据库，不然就很烦啊，一个个添加权限，心酸

看图，我这个权限字符串要一个个添加就很烦啊，想哭，有没有好办法呢，肯定有啊，给出方案及代码，
1.遍历包下面所有带注解的 类
2. 然后取到注解上的值
3. 插入数据库 这样是不是不需要一个个手动添加了呢。
测试类

@RestController
public class UserController{

    @Autowired
    private UserService userService;


    @RequestMapping("user/export")
    public void exportUser(HttpServletResponse httpServletResponse){
        List<User> list = userService.list();
        List<Map> rows = Lists.newArrayList();
        list.forEach(e->{
            Map row = new HashMap();
            row.put("姓名",e.getName());
            row.put("年龄",e.getAge());
            rows.add(row);
        });
        ExcelUtils.exportExcel(httpServletResponse,"用户列表",rows);
    }


    @RequestMapping("user/import")
    public Result importUser(MultipartFile file){
        List<Map<String, Object>> mapList = ExcelUtils.importExcel(file);
        List<User> userList =  Lists.newArrayList();
        mapList.forEach(e->{
            String name = String.valueOf(e.get("姓名"));
            Integer age = Integer.parseInt(String.valueOf(e.get("年龄")));
            User user = new User();
            user.setId(1);
            user.setAge(age);
            user.setName(name);
            userList.add(user);
        });
        userService.saveBatch(userList);
        return Result.ok();
    }


    @RequestMapping("user/exportTpl")
    public void exportUserTpl(HttpServletResponse httpServletResponse){
        List<String> hearder = Lists.newArrayList();
        hearder.add("用户名");
        hearder.add("年级");
        ExcelUtils.exportExcelTpl(httpServletResponse,"用户模板",hearder);
    }

}

   @Test
    public void test(){
        Reflections reflections = new Reflections("com.example.demo");
        Set<Class<?>> annotated = reflections.getTypesAnnotatedWith(RestController.class);
        annotated.forEach(e->{
            System.out.println(e.getName());
            Method[] methods = e.getMethods();
            for (Method method:methods){
                //System.out.println("method:" +method.getName());
                RequestMapping annotation = method.getAnnotation(RequestMapping.class);
                if(annotation != null){
                    String[] value = annotation.value();
                    if(value != null && value.length>=1)
                        System.out.println("value:" +value[0]);
                }
            }
        });
    }

结果：