Springboot 实现防重复提交和防重复点击（附源码），java 高级编程实验一

测试用例 #

=========

Copypackage com.dalelyzou.preventrepeatsubmit.controller;

import com.dalelyzou.preventrepeatsubmit.PreventrepeatsubmitApplicationTests;

import com.dalelyzou.preventrepeatsubmit.service.AsyncFeginService;

import com.dalelyzou.preventrepeatsubmit.vo.RequestVo;

import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.annotation.Autowired;

import java.io.IOException;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

/**

• TestControllerTest

• @description 防重复点击测试类

• @author daleyzou

• @date 2020 年 09 月 28 日 17:13

• @version 1.3.1

*/

class TestControllerTest extends PreventrepeatsubmitApplicationTests {

@Autowired

AsyncFeginService asyncFeginService; @Test

public void thisIsTestLocation() throws IOException {

RequestVo requestVo = new RequestVo();

requestVo.setParam5("random");

ExecutorService executorService = Executors.newFixedThreadPool(4);

for (int i = 0; i <= 3; i++) {

executorService.execute(() -> { String kl = asyncFeginService.thisIsTestLocation(requestVo); System.err.println("收到响应：" + kl);

}); } System.in.read(); } @Test

public void thisIsTestBody() throws IOException {

RequestVo requestVo = new RequestVo();

requestVo.setParam5("special");

ExecutorService executorService = Executors.newFixedThreadPool(4);

for (int i = 0; i <= 3; i++) {

executorService.execute(() -> { String kl = asyncFeginService.thisIsTestBody(requestVo); System.err.println("收到响应：" + kl);

}); } System.in.read(); }}

定义一个注解 #

===========

Copypackage com.dalelyzou.preventrepeatsubmit.aspect;

import java.lang.annotation.ElementType;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.annotation.Target;

/**

• NoRepeatSubmit

• @description 重复点击的切面

• @author daleyzou

• @date 2020 年 09 月 23 日 14:35

• @version 1.4.8

*/

@Target(ElementType.METHOD)

@Retention(RetentionPolicy.RUNTIME)

public @interface NoRepeatSubmit {

/**

• 锁过期的时间

• */

int seconds() default 5;

/**

• 锁的位置

• */

String location() default "NoRepeatSubmit";

/**

• 要扫描的参数位置

• */

int argIndex() default 0;

/**

• 参数名称

• */

String name() default "";

}

根据指定的注解定义一个切面，根据参数中的指定值来判断请求是否重复 #

=================================

Copypackage com.dalelyzou.preventrepeatsubmit.aspect;

import com.dalelyzou.preventrepeatsubmit.constant.RedisKey;

import com.dalelyzou.preventrepeatsubmit.service.LockService;

import com.dalelyzou.preventrepeatsubmit.vo.RsVo;

import com.google.common.collect.Maps;

import com.google.gson.Gson;

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.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

import org.springframework.util.StringUtils;

import java.lang.reflect.Field;

import java.util.Map;

@Aspect

@Component

public class NoRepeatSubmitAspect {

private static final Logger logger = LoggerFactory.getLogger(NoRepeatSubmitAspect.class);

private static Gson gson = new Gson();

private static final String SUFFIX = "SUFFIX";

@Autow

【一线大厂Java面试题解析+核心总结学习笔记+最新架构讲解视频+实战项目源码讲义】
浏览器打开：qq.cn.hn/FTf 免费领取

ired

LockService lockService; /**

• 横切点

*/

@Pointcut("@annotation(noRepeatSubmit)")

public void repeatPoint(NoRepeatSubmit noRepeatSubmit) {

} /**

• 接收请求，并记录数据

*/

@Around(value = "repeatPoint(noRepeatSubmit)")

public Object doBefore(ProceedingJoinPoint joinPoint, NoRepeatSubmit noRepeatSubmit) {

String key = RedisKey.NO_REPEAT_LOCK_PREFIX + noRepeatSubmit.location();

Object[] args = joinPoint.getArgs();

String name = noRepeatSubmit.name();

int argIndex = noRepeatSubmit.argIndex(); String suffix;

if (StringUtils.isEmpty(name)) {

suffix = String.valueOf(args[argIndex]);

} else {

Map<String, Object> keyAndValue = getKeyAndValue(args[argIndex]);

Object valueObj = keyAndValue.get(name);

if (valueObj == null) {

suffix = SUFFIX; } else {

suffix = String.valueOf(valueObj);

} } key = key + ":" + suffix;

logger.info("==================================================");

for (Object arg : args) {

logger.info(gson.toJson(arg)); } logger.info("==================================================");

int seconds = noRepeatSubmit.seconds(); logger.info("lock key : " + key);

if (!lockService.isLock(key, seconds)) {

return RsVo.fail("操作过于频繁，请稍后重试");

} try {

Object proceed = joinPoint.proceed();

return proceed;

} catch (Throwable throwable) {

logger.error("运行业务代码出错", throwable);

throw new RuntimeException(throwable.getMessage());

} finally {

lockService.unLock(key); } } public static Map<String, Object> getKeyAndValue(Object obj) {

Map<String, Object> map = Maps.newHashMap();

// 得到类对象

Class userCla = (Class) obj.getClass();

/* 得到类中的所有属性集合 */

Field[] fs = userCla.getDeclaredFields();

for (int i = 0; i < fs.length; i++) {

Field f = fs[i];

// 设置些属性是可以访问的

f.setAccessible(true);

Object val = new Object();