Javax
@Resource
javax.annotation.Resource
- Java的注解
- name和type，name属性解析为bean的名称，type属性解析为bean的类型
- 默认的注入方式为
byName（根据名称进行匹配）；type无法分辨时，可以根据name分辨，通过name属性来显式指定Bean名称。
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| @Resource
private UserService service;
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Spring
@Service
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| @Service
public class UserServiceImpl implements UserService {}
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@Repository
org.springframework.stereotype.Repository
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| @Mapper
@Repository
public interface UserMapper {}
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@Configuration
org.springframework.context.annotation.Configuration
@Configuration用于定义配置类，可替换xml配置文件
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| ```
## @Transactional
{% note green no-icon %} org.springframework.transaction.annotation.Transactional {% endnote %}
```Java
@Transactional
public void userCommon(){}
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@Component
org.springframework.stereotype.Component
@Component定义Spring管理Bean（将标注@Component注解的类交由Spring管理）
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| @Component
public class UserUtils {}
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@Autowired
org.springframework.beans.factory.annotation.Autowired
- Spring的注解
- 默认的注入方式为
byType（根据类型进行匹配）；type无法分辨时，可以根据name分辨，变量名称要与Bean名称一致，也可以通过@Qualifier注解来显式指定Bean名称。
- 作用和
@Resource相似。
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| @Autowired
private UserService service;
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@Qualifier
org.springframework.beans.factory.annotation.Qualifier
- 必须搭配
@Autowired搭配使用；
- 当需要执行依赖注入时，
@Qualifier会限定Spring Framework需要选择注入的对象；
- 例如：当项目中一个
Service接口有多个实现类时，就可以使用@Qualifier对依赖注入过程进行更详细的控制。
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| @Autowired
@Qualifier(value = "userService1")
private UserService service;
@Service("userService1")
public class UserServiceImpl implements UserService {}
@Service("userService2")
public class UserServiceImpl implements DemoUserService {}
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@Validated
org.springframework.validation.annotation.Validated
- 对传输的参数进行数据校验的注解，通过配置
@Validation对数据约束。
@Validated作用在类、方法和参数上
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| @RequestMapping("/user")
@Controller
public class UserController {
public void getUserInfo(@Validated String name) {}
}
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Lang
@Aspect
org.aspectj.lang.annotation.Aspect
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| @Aspect
@Component
public class UserAspect {}
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@Pointcut
org.aspectj.lang.annotation.Pointcut
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| @Pointcut("execution(public * com.smart.Aop.controller.*.*(..))")
public void aopPointCut(){}
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@Around
org.aspectj.lang.annotation.Around
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| ```
# MyBatis
## @Mapper
{% note green no-icon %} org.apache.ibatis.annotations.Mapper {% endnote %}
```Java
@Mapper
public interface UserMapper {}
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@Select
org.apache.ibatis.annotations.Select
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| @Mapper
public interface UserMapepr{
@Select("SELECT * FROM sys_user")
List<User> getUserList();
}
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@Param
org.apache.ibatis.annotations.Param
@Param作用：给Mapper层中SQL的参数赋值
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| @Mapper
public interface UserMapepr{
@Select("SELECT * FROM sys_user WHERE id = #{id}")
List<User> getUserList(@Param("id") String userId);
}
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Mybatis-plus
@TableName
com.baomidou.mybatisplus.annotation.TableName
@TableName作用：实现实体类型和数据库中的表实现映射
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| @Data
@TableName("sysy_user")
public class User {}
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@TableId
com.baomidou.mybatisplus.annotation.TableId
@TableId作用：将属性所对应的字段指定为主键
- value【属性名】：指定主键的字段，要和数据库表中的属性名一致，要不然最终的查询结果是null
- type【属性】：设置主键生成策略，不指定的话默认雪花算法 （数据库记得勾选自动递增）
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| @Data
public class User{
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
}
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Lombok
@Data
@Data作用： 提高代码的简洁，省去代码中大量的get()、set()、toString()等方法@Data相当于@Getter、@Setter、@RequiredArgsConstructor、@ToString、@EqualsAndHashCode五个注解的合集
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| @Data
public class User{}
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@EqualsAndHashCode
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| @EqualsAndHashCode(callSuper = false)
public class User{}
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@Accessors
lombok.experimental.Accessors
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| @Data
@Accessors(chain = true)
public class User{}
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@Slf4j
lombok.extern.slf4j.Slf4j
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| @RequestMapping("/user")
@Slf4j
@Controller
public class UserController {}
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Swagger
@Api
io.swagger.annotations.Api
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| @Api(tags = "用户Controller层")
public class UserController {}
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@ApiOperation
io.swagger.annotations.ApiOperation
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| @RequestMapping("/user")
@Controller
public class UserController {
@RequestMapping(value = "/getUserInfo", method = RequestMethod.GET)
@ApiOperation(value = "获取用户信息")
public void getUserInfo(Integer id) {}
}
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@ApiImplicitParam
io.swagger.annotations.ApiImplicitParam
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| @RequestMapping("/user")
@Controller
public class UserController {
@RequestMapping(value = "/getUserInfo", method = RequestMethod.GET)
@ApiImplicitParam(name="id", value="用户ID")
public void getUserInfo(Integer id) {}
}
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@ApiImplicitParams
io.swagger.annotations.ApiImplicitParams
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| @RequestMapping("/user")
@Controller
public class UserController {
@RequestMapping(value = "/getUserInfo", method = RequestMethod.GET)
@ApiImplicitParams({
@ApiImplicitParam(name="page", value="页码", required = true),
@ApiImplicitParam(name="limit", value="每页数量", required = true)
})
public void getUserInfo(Integer id, String name) {}
}
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@ApiModel
io.swagger.annotations.ApiModel
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| @Data
@ApiModel(value="用户-对象", description="用户")
public class User {}
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@ApiModelProperty
io.swagger.annotations.ApiModelProperty
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| @Data
public class User {
@ApiModelProperty(value = "名称")
private String name;
}
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Jackson
com.fasterxml.jackson.annotation.JsonFormat
@JsonFormat作用：可用于返回Date日期数据的时间格式化
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| @Data
public class User {
@JsonFormat(pattern = "yyyy-MM-dd hh:mm:ss", timezone="GMT+8")
private Date createTime;
}
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