Maven
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< parent > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-parent</ artifactId > < version >2.2.6.RELEASE</ version > < relativePath /> <!-- lookup parent from repository --> </ parent >
< dependency > < groupId >com.baomidou</ groupId > < artifactId >mybatis-plus-boot-starter</ artifactId > < version >3.1.0</ version > </ dependency > |
解决方案
1、 实体类
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/** * 基础Bean */ @Data public class BaseEntity implements Serializable {
@TableField (value = "create_user" , fill = FieldFill.INSERT) // 新增执行 private String createUser;
@TableField (value = "create_time" , fill = FieldFill.INSERT) private LocalDateTime createTime;
@TableField (value = "update_user" , fill = FieldFill.INSERT_UPDATE) // 新增和更新执行 private String updateUser;
@TableField (value = "update_time" , fill = FieldFill.INSERT_UPDATE) private LocalDateTime updateTime;
@TableField (value = "remark" ) private String remark;
} |
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@Data @TableName ( "sys_dept" ) public class SysDeptEntity extends BaseEntity {
private static final long serialVersionUID = 1L;
/** * 部门ID **/ @TableId private Long deptId;
/** * 部门父节点ID **/ private Long parentId;
/** * 部门名称 **/ private String deptName;
/** * 显示顺序 **/ private Integer orderNum;
/** * 用户状态（0：正常 1：禁用） **/ private Integer status;
@TableField (exist = false ) private List<SysDeptEntity> children;
} |
2、拦截器MetaObjectHandler
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/** * @author ShenTuZhiGang * @version 1.0.0 * @date 2020-11-26 15:52 */ @Slf4j @Component public class CustomMetaObjectHandler implements MetaObjectHandler { @Autowired private AuthenticationTrustResolver authenticationTrustResolver; @Override public void insertFill(MetaObject metaObject) { log.info( "come to insert fill ........." ); this .setFieldValByName( "createTime" , LocalDateTime.now(), metaObject); this .setFieldValByName( "updateTime" , LocalDateTime.now(), metaObject); Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); if (!authenticationTrustResolver.isAnonymous(authentication) && authentication!= null ){ AuthenticationUser user = (AuthenticationUser) authentication.getPrincipal(); this .setFieldValByName( "createUser" , user.getUsername(), metaObject); this .setFieldValByName( "updateUser" , user.getUsername(), metaObject); } else { this .setFieldValByName( "createUser" , "unknown" , metaObject); this .setFieldValByName( "updateUser" , "unknown" , metaObject); }
}
@Override public void updateFill(MetaObject metaObject) { log.info( "come to update fill ........." ); this .setFieldValByName( "update_time" , LocalDateTime.now(), metaObject); Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); if (!authenticationTrustResolver.isAnonymous(authentication) && authentication!= null ){ AuthenticationUser user = (AuthenticationUser) authentication.getPrincipal(); this .setFieldValByName( "updateUser" , user.getUsername(), metaObject); } else { this .setFieldValByName( "updateUser" , "unknown" , metaObject); } } } |
不需要以下代码：
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@Configuration public class MyBatisPlusConfig {
/** * 自动填充 功能 * @return */ @Bean public GlobalConfig globalConfig() { GlobalConfig globalConfig = new GlobalConfig(); globalConfig.setMetaObjectHandler( new MetaHandler()); return globalConfig; }
} |
3、测试
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@RequiresPermissions ( "sys:dept:add" ) @PostMapping ( "/add" ) @ResponseBody public R add( @RequestBody SysDeptEntity deptEntity) { logger.info( "添加信息={}" , deptEntity); sysDeptService.save(deptEntity); // 不再需要设置setCreateUser、setCreateTime、setUpdateUser、setUpdateTime操作，代码更优美 return R.ok(); } |
参考文章
使用MyBatis Plus自动添加数据库表中的创建时间、创建者、更新时间、更新者
mybatisPlus自动填充更新时间
mybatis-plus实战-时间字段自动更新
使用mybatis plus插入或更新数据时mysql表的添加时间和更新时间字段没有更新（mybatis plus坑之一）
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原文链接：https://blog.csdn.net/weixin_43272781/article/details/110198852
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