[公共字段自动填充]
1、自定义注解 AutoFill
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface AutoFill {
OperationType value();
}
2、枚举对象类
public enum OperationType {
UPDATE,
INSERT
}
3、自定义切面 AutoFillAspect
@Aspect
@Component
@Slf4j
public class AutoFillAspect {
@Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
public void autoFillPointCut(){}
@Before("autoFillPointCut()")
public void autoFill(JoinPoint joinPoint){
log.info("开始进行公共字段自动填充...");
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
OperationType operationType = autoFill.value();
Object[] args = joinPoint.getArgs();
if(args == null || args.length == 0){
return;
}
Object entity = args[0];
LocalDateTime now = LocalDateTime.now();
Long currentId = BaseContext.getCurrentId();
if(operationType == OperationType.INSERT){
try {
Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
setCreateTime.invoke(entity,now);
setCreateUser.invoke(entity,currentId);
setUpdateTime.invoke(entity,now);
setUpdateUser.invoke(entity,currentId);
} catch (Exception e) {
e.printStackTrace();
}
}else if(operationType == OperationType.UPDATE){
try {
Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
setUpdateTime.invoke(entity,now);
setUpdateUser.invoke(entity,currentId);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
4、在Mapper接口的方法上加入 AutoFill 注解
@Mapper
public interface CategoryMapper {
@AutoFill(value = OperationType.INSERT)
void insert(Category category);
@AutoFill(value = OperationType.UPDATE)
void update(Category category);
}