java后台切面注解防止表单重复提交

springboot项目后台通过注解的形式，防止指定接口重复提交

代码如下：

package org.common.aspect;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.common.api.vo.Result;
import org.common.aspect.annotation.LockMethod;
import org.common.constant.CommonConstant;
import org.common.util.RedisUtil;
import org.common.util.SpringContextUtils;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;


/**
 * 防止表单重复提交
 */

@Aspect
@Component
@Slf4j
public class LockMethodAspect {

    @Autowired
    private RedisUtil redisUtil;


    @Pointcut("@annotation(org.common.aspect.annotation.LockMethod)")
    public void pointCut() {
    }

    @Around("pointCut()")
    public Object around(ProceedingJoinPoint point) throws  Throwable{
        HttpServletRequest request = SpringContextUtils.getHttpServletRequest();
        String token = request.getHeader(CommonConstant.X_ACCESS_TOKEN);
        if (StringUtils.isEmpty(token)){
            return Result.error("token不存在!");
        }
        MethodSignature signature = (MethodSignature) point.getSignature();
        Method method = signature.getMethod();
        LockMethod annotation = method.getAnnotation(LockMethod.class);
        int waitTime = annotation.waitTime();

        String prefix = token + "-" + request.getRequestURI();
        if (redisUtil.hasKey(prefix)){
            return Result.error("请勿重复操作!");
        }
        redisUtil.set(prefix,prefix,waitTime);
        return  point.proceed();
    }
}

注解：

package org.common.aspect.annotation;


import java.lang.annotation.*;

/**
 * 防止表单重复提交
 */
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface LockMethod {
    //默认一秒只能提交一次
    int waitTime() default 1;
}

使用方法：在指定接口上使用注解@LockMethod