@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

@Override
    public void insertFill(MetaObject metaObject) {
        log.info("公共字段自動(dòng)填充[insert]...");
        log.info("線(xiàn)程id：{}", Thread.currentThread().getId());

        metaObject.setValue("createTime", LocalDateTime.now());
        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("createUser", threadLocal.get());  // 動(dòng)態(tài)填充 填充當(dāng)前登錄的用戶(hù)的 ID
        metaObject.setValue("updateUser", threadLocal.get());  // 動(dòng)態(tài)填充 填充當(dāng)前登錄的用戶(hù)的 ID
    }


    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("公共字段自動(dòng)填充[update]...");
        log.info("線(xiàn)程id：{}", Thread.currentThread().getId());

        metaObject.setValue("updateTime", LocalDateTime.now());
        metaObject.setValue("updateUser", threadLocal.get());
    }

@Configuration
public class ThreadLocalConfig {
    @Bean
    public ThreadLocal<Long> threadLocal(){
        ThreadLocal<Long> threadLocal = new ThreadLocal<>();
        return threadLocal;
    }
}

public class MyInterceptor implements HandlerInterceptor {

    @Autowired
    ThreadLocal<Long> threadLocal;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        log.info("線(xiàn)程id：{}", Thread.currentThread().getId());
        threadLocal.set((Long) request.getSession().getAttribute("employeeId"));
        ...
        對(duì)session進(jìn)行判斷的代碼
        ...
    }
}

    @TableField(fill = FieldFill.INSERT)     // 插入時(shí)填充字段
    private LocalDateTime createTime;

    @TableField(fill = FieldFill.INSERT_UPDATE)    // 插入和更新時(shí)填充字段
    private LocalDateTime updateTime;

    @TableField(fill = FieldFill.INSERT)    // 插入時(shí)填充字段
    private Long createUser;

    @TableField(fill = FieldFill.INSERT_UPDATE)    // 插入和更新時(shí)填充字段
    private Long updateUser;