使用Mybatis-plus实现时间自动填充(代码直接可用)
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一. 搭建基础项目
引入依赖
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--lombok 依赖-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!-- swagger2 依赖 -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.7.0</version>
</dependency>
<!-- Swagger第三方ui依赖 -->
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>swagger-bootstrap-ui</artifactId>
<version>1.9.6</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.1.tmp</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
</dependencies>controller
@RestController
public class TestController {
@Autowired
private IProjectService projectService;
@ApiOperation("新增项目")
@PostMapping("/")
public void addProjectWrite(@RequestBody Project project) {
projectService.save(project);
}
}service
public interface IProjectService extends IService<Project> {
}serviceImpl
@Service
public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> implements IProjectService {
}Mapper
@Service
public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> implements IProjectService {
}Pojo
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@TableName("ts_project")
@ApiModel(value="Project对象", description="撰写项目申请书的基本内容")
public class Project implements Serializable {
private static final long serialVersionUID = 1L;
@TableId(value = "id", type = IdType.AUTO)
private String id;
private Integer workNumber;
private Integer adminId;
private String name;
@ApiModelProperty(value = "创建时间")
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "Asia/Shanghai")
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private Date gmtCreate;
@ApiModelProperty(value = "更新时间")
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "Asia/Shanghai")
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private Date gmtModified;
}application.yml
server:
# 端口
port: 8081
spring:
# 数据源配置
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/test2?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
username: root
password: root
# Mybatis-plus配置
mybatis-plus:
#配置Mapper映射文件
mapper-locations: classpath*:/mapper
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
@Override
public void insertFill(MetaObject metaObject) {
this.setFieldValByName("gmtCreate", new Date(), metaObject);
this.setFieldValByName("gmtModified", new Date(), metaObject);
}
@Override
public void updateFill(MetaObject metaObject) {
this.setFieldValByName("gmtModified", new Date(), metaObject);
}
}
修改pojo类
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@TableName("ts_project")
@ApiModel(value="Project对象", description="撰写项目申请书的基本内容")
public class Project implements Serializable {
private static final long serialVersionUID = 1L;
@TableId(value = "id", type = IdType.AUTO)
private String id;
private Integer workNumber;
private Integer adminId;
private String name;
@ApiModelProperty(value = "创建时间")
@TableField(fill = FieldFill.INSERT)
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "Asia/Shanghai")
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private Date gmtCreate;
@ApiModelProperty(value = "更新时间")
@TableField(fill = FieldFill.INSERT_UPDATE)
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "Asia/Shanghai")
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private Date gmtModified;
}- 在gmtCreate上增加 @TableField(fill = FieldFill.INSERT) 表示创建时间。
- 在gmtModified上增加 @TableField(fill = FieldFill.INSERT_UPDATE)表示修改时间。
- gmtCreate和gmtModified需要与自定义方法中的字段相匹配。
此时执行操作，会在表中添加时间，如下：
以上为个人经验，希望能给大家一个参考，也希望大家多多支持编程网。
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