关于springdatajpa 注解@CreatedBy@LastModifiedBy@Version@LastModifiedDate的使用

1.pom.xml的文件

  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.7.RELEASE</version>
    </parent>
<dependencies>
    <dependency>
     <groupId>business-base</groupId>
    <artifactId>li-common</artifactId>
    </dependency>
     <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
             <version>5.1.38</version>
        </dependency>
      <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-data-jpa</artifactId>
      </dependency>
  </dependencies>

2.配置代码

@Configuration
@EnableJpaAuditing
public class AuditingConfig {

    @Bean
    public AuditorAware<String> auditorProvider() {
        return new DefaultAuditorAwareImpl();
    }

}

public class DefaultAuditorAwareImpl implements AuditorAware<String> {

    @Override
    public String getCurrentAuditor() {
    //此处应该返回当前登录的用户的名,可以使用    private static final ThreadLocal<AuthContext> contextHolder = new InheritableThreadLocal<AuthContext>();等线程方法 将登录用户存入
    //

        return null;
    }

}

3.抽象模型类

@MappedSuperclass
public abstract class AbstractModel extends AbstractPersistable<Long> {
    private static final long serialVersionUID = 7205853521241442700L;

    // TODO 需要实现集群化的ID生成机制
}

@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public abstract class AbstractAuditModel extends AbstractModel {
    private static final long serialVersionUID = -8388269103763562978L;

    @CreatedBy
    private String createdBy;

    @Temporal(TemporalType.TIMESTAMP)
    @CreatedDate
    private Date createdDate;

    @LastModifiedBy
    private String lastModifiedBy;

    @Temporal(TemporalType.TIMESTAMP)
    @LastModifiedDate
    private Date lastModifiedDate;

    @Version
    private long version;

    public String getCreatedBy() {
        return this.createdBy;
    }

    public void setCreatedBy(final String createdBy) {
        this.createdBy = createdBy;
    }

    public Date getCreatedDate() {
        return this.createdDate;
    }

    public void setCreatedDate(final Date createdDate) {
        this.createdDate = createdDate;
    }

    public String getLastModifiedBy() {
        return this.lastModifiedBy;
    }

    public void setLastModifiedBy(final String lastModifiedBy) {
        this.lastModifiedBy = lastModifiedBy;
    }

    public Date getLastModifiedDate() {
        return this.lastModifiedDate;
    }

    public void setLastModifiedDate(final Date lastModifiedDate) {
        this.lastModifiedDate = lastModifiedDate;
    }

    public long getVersion() {
        return this.version;
    }

    public void setVersion(final long version) {
        this.version = version;
    }
}