自定義註解和springAOP捕獲Service層異常,並處理自定義異常操作

/**
 * 自定義參數為null異常
 */
public class NoParamsException extends Exception {
    //用詳細信息指定一個異常
    public NoParamsException(String message){
        super(message);
    }

    //用指定的詳細信息和原因構造一個新的異常
    public NoParamsException(String message, Throwable cause){
        super(message,cause);
    }

    //用指定原因構造一個新的異常
    public NoParamsException(Throwable cause) {
        super(cause);
    }
}

/**
 * 統一捕獲service異常處理註解
 */
@Documented
@Target({ElementType.METHOD, ElementType.TYPE}) //可在類或者方法使用
@Retention(RetentionPolicy.RUNTIME)
public @interface ServiceExceptionCatch {
}

@Component
@Aspect
@Slf4j
public class ServiceExceptionHandler {

    @Around("@annotation(com.zhuzher.annotations.ServiceExcepCatch)  || @within(com.zhuzher.annotations.ServiceExcepCatch)")
    public ResponseMessage serviceExceptionHandler(ProceedingJoinPoint proceedingJoinPoint) {
        ResponseMessage returnMsg;
        try {
            returnMsg = (ResponseMessage) proceedingJoinPoint.proceed();
        } catch (Throwable throwable) {
            log.error("ServiceExcepHandler serviceExcepHandler failed", throwable);
            //單獨處理缺少參數異常
            if(throwable instanceof NoParamsException) {
                returnMsg = ResponseMessage.failture(ErrorCode.ARG_CAN_NOT_BE_EMPTY);
            }else{//其他正常返回
                returnMsg=ResponseMessage.newErrorsMessage(throwable.getMessage());
            }
        }
        return returnMsg;
    }
}

package com.ahdruid.aop.annotation;
import java.lang.annotation.*;
 
/**
 * 服務異常捕獲，如捕獲Service向外拋出的異常
 * <p>
 * 添加在類上、方法上
 *
 */
@Documented
@Target({ElementType.METHOD, ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface ServiceExcepCatch {
}

package com.ahdruid.aop;
import com.ahdruid.ReturnMsg;
import com.ahdruid.errorenums.BaseErrorEnum;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
 
/**
 * 服務異常捕獲處理器
 * <p>
 * 如捕獲Service向外拋出的異常
 *
 */
@Component
@Aspect
@Slf4j
public class ServiceExcepHandler {
 
    @Around("@annotation(com.ahdruid.aop.annotation.ServiceExcepCatch)  || @within(com.ahdruid.aop.annotation.ServiceExcepCatch)")
    public ReturnMsg serviceExcepHandler(ProceedingJoinPoint proceedingJoinPoint) {
        ReturnMsg returnMsg = new ReturnMsg();
        try {
            returnMsg = (ReturnMsg) proceedingJoinPoint.proceed();
        } catch (Throwable throwable) {
            log.error("ServiceExcepHandler serviceExcepHandler failed", throwable);
            returnMsg.setError(BaseErrorEnum.SYS_ERROR_UNKNOW);
        }
        return returnMsg;
    }
}