自定义注解和springAOP捕获Service层异常,并处理自定义异常操作

/**
 * 自定义参数为null异常
 */
public class NoParamsException extends Exception {
    //用详细信息指定一个异常
    public NoParamsException(String message){
        super(message);
    }

    //用指定的详细信息和原因构造一个新的异常
    public NoParamsException(String message, Throwable cause){
        super(message,cause);
    }

    //用指定原因构造一个新的异常
    public NoParamsException(Throwable cause) {
        super(cause);
    }
}

/**
 * 统一捕获service异常处理注解
 */
@Documented
@Target({ElementType.METHOD, ElementType.TYPE}) //可在类或者方法使用
@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);
            //单独处理缺少参数异常
            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.*;
 
/**
 * 服务异常捕获，如捕获Service向外抛出的异常
 * <p>
 * 添加在类上、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;
 
/**
 * 服务异常捕获处理器
 * <p>
 * 如捕获Service向外抛出的异常
 *
 */
@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;
    }
}