如何配置Spring Data Auditing.md

基于Spring Data 配置AuditorAware

Spring Data提供支持审计功能：即由谁在什么时候创建或修改实体。Spring Data提供了在实体类的属性上增加@CreatedBy，@LastModifiedBy，@CreatedDate，@LastModifiedDate注解，并配置相应的配置项，即可实现审计功能，有系统自动记录createdBy CreatedDate lastModifiedBy lastModifiedDate四个属性的值，下面为具体的配置项。

实体类

@EntityListeners(AuditingEntityListener.class)
public abstract class AbstractAuditingEntity implements Serializable {

    private static final long serialVersionUID = 1L;
    
    @CreatedBy
    @Column(name = "created_by", nullable = false, length = 50, updatable = false)
    private String createdBy;
    
    @CreatedDate
    @Column(name = "created_date", nullable = false, updatable = false)
    private Instant createdDate = Instant.now();
    
    @LastModifiedBy
    @Column(name = "last_modified_by", length = 50)
    private String lastModifiedBy;
    
    @LastModifiedDate
    @Column(name = "last_modified_date")
    private Instant lastModifiedDate = Instant.now();
	
	...

AuditorAware 实现

新建AuditingEntityConfiguration类，并使用如下配置

@Component
public class AuditingEntityConfiguration implements AuditorAware<String> {

@Override
public Optional<String> getCurrentAuditor() {
		return SecurityUtils.getCurrentUserLogin();
	}
}

启用审计功能

配置 EnableJpaAuditing 注解

@SpringBootApplication
...
@EnableJpaAuditing
...
public class Application {

public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}
}

注：在异步方法中如何获取用户信息 由于在异步方法中使用repository保存对象，获取不到用户用户信息，需增加如下配置项，即可在Authentication获取用户的信息

@Bean
public MethodInvokingFactoryBean methodInvokingFactoryBean() {
    MethodInvokingFactoryBean methodInvokingFactoryBean = new MethodInvokingFactoryBean();
    methodInvokingFactoryBean.setTargetClass(SecurityContextHolder.class);
    methodInvokingFactoryBean.setTargetMethod("setStrategyName");
    methodInvokingFactoryBean.setArguments(SecurityContextHolder.MODE_INHERITABLETHREADLOCAL);
    return methodInvokingFactoryBean;
}