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。
示例
创建一个实体类
package com.hfcsbc.infrastructureservice.domain;import com.hfcsbc.repository.support.domain.AbstractAuditingEntity;import lombok.Data;import org.springframework.data.annotation.CreatedBy;import org.springframework.data.annotation.CreatedDate;import org.springframework.data.annotation.LastModifiedBy;import org.springframework.data.annotation.LastModifiedDate;import org.springframework.data.jpa.domain.support.AuditingEntityListener;import javax.persistence.*;import java.util.Date;/** * Create by pengchao on 2018/3/7 */@Entity@Data@EntityListeners({AuditingEntityListener.class})public class Person { @Id @GeneratedValue private Long id; private String name; private Integer age; @CreatedBy @Column( name = "created_by", nullable = false, length = 50, updatable = false ) private String createdBy; @CreatedDate @Column( name = "created_date", nullable = false, updatable = false ) private Date createdDate = new Date(); @LastModifiedBy @Column( name = "last_modified_by", length = 50 ) private String lastModifiedBy; @LastModifiedDate @Column( name = "last_modified_date" ) private Date lastModifiedDate = new Date();}创建相应的Repository
package com.hfcsbc.repository;import com.hfcsbc.domain.Person;import org.springframework.data.jpa.repository.JpaRepository;/** * Create by pengchao on 2018/3/7 */public interface PersonRepository extends JpaRepository<Person, Long> {}配置获取用户信息的bean
package com.hfcsbc.infrastructureservice.config;import org.springframework.data.domain.AuditorAware;import org.springframework.security.core.Authentication;import org.springframework.security.core.context.SecurityContextHolder;import org.springframework.stereotype.Component;import java.util.Optional;/** * Create by pengchao on 2018/3/7 */@Component("auditorAware")public class AuditorAwareImpl implements AuditorAware<String> { @Override public Optional<String> getCurrentAuditor() { Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); return Optional.of(authentication.getPrincipal().toString()); }}在Spring Boot入口类开启审计功能
package com.hfcsbc.infrastructureservice;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.data.jpa.repository.config.EnableJpaAuditing;import org.springframework.scheduling.annotation.EnableAsync;@SpringBootApplication@EnableJpaAuditing(auditorAwareRef = "auditorAware")@EnableAsyncpublic class PersonApplication { public static void main(String[] args) { SpringApplication.run(PersonApplication.class, args); }}即完成配置，在使用 repository 保存对象时， createdBy CreatedDate lastModifiedBy lastModifiedDate 有审计功能自动插入
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
package com.hfcsbc.config;import org.springframework.beans.factory.config.MethodInvokingFactoryBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.security.core.context.SecurityContextHolder;/** * Create by pengchao on 2018/3/7 */@Configurationpublic class AuditorAwareConfig { @Bean public MethodInvokingFactoryBean methodInvokingFactoryBean() { MethodInvokingFactoryBean methodInvokingFactoryBean = new MethodInvokingFactoryBean(); methodInvokingFactoryBean.setTargetClass(SecurityContextHolder.class); methodInvokingFactoryBean.setTargetMethod("setStrategyName"); methodInvokingFactoryBean.setArguments(new String[]{SecurityContextHolder.MODE_INHERITABLETHREADLOCAL}); return methodInvokingFactoryBean; }}SecurityContextHolder的主要功能是将当前执行的进程和SecurityContext关联起来。
SecurityContextHolder.MODE_INHERITABLETHREADLOCAL ：用于线程有父子关系的情景中，子线程集成父线程的SecurityContextHolder；
SecurityContextHolder.MODE_INHERITABLETHREADLOCAL ：全局共用SecurityContextHolder。
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