背景
同一条数据被用户点击了多次，导致数据冗余，需要防止弱网络等环境下的重复点击
目标
通过在指定的接口处添加注解，实现根据指定的接口参数来防重复点击
说明
这里的重复点击是指在指定的时间段内多次点击按钮
技术方案
springboot + redis锁 + 注解
使用 feign client 进行请求测试
最终的使用实例
1、根据接口收到 PathVariable 参数判断唯一
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/** * 根据请求参数里的 PathVariable 里获取的变量进行接口级别防重复点击 * * @param testId 测试id * @param requestVo 请求参数 * @return * @author daleyzou */ @PostMapping("/test/{testId}") @NoRepeatSubmit(location = "thisIsTestLocation", seconds = 6) public RsVo thisIsTestLocation(@PathVariable Integer testId, @RequestBody RequestVo requestVo) throws Throwable { // 睡眠 5 秒，模拟业务逻辑 Thread.sleep(5); return RsVo.success("test is return success"); } |
2、根据接口收到的 RequestBody 中指定变量名的值判断唯一
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/** * 根据请求参数里的 RequestBody 里获取指定名称的变量param5的值进行接口级别防重复点击 * * @param testId 测试id * @param requestVo 请求参数 * @return * @author daleyzou */ @PostMapping("/test/{testId}") @NoRepeatSubmit(location = "thisIsTestBody", seconds = 6, argIndex = 1, name = "param5") public RsVo thisIsTestBody(@PathVariable Integer testId, @RequestBody RequestVo requestVo) throws Throwable { // 睡眠 5 秒，模拟业务逻辑 Thread.sleep(5); return RsVo.success("test is return success"); } |
ps: jedis 2.9 和 springboot有各种兼容问题，无奈只有降低springboot的版本了
运行结果
收到响应：{"succeeded":true,"code":500,"msg":"操作过于频繁，请稍后重试","data":null}
收到响应：{"succeeded":true,"code":500,"msg":"操作过于频繁，请稍后重试","data":null}
收到响应：{"succeeded":true,"code":500,"msg":"操作过于频繁，请稍后重试","data":null}
收到响应：{"succeeded":true,"code":200,"msg":"success","data":"test is return success"}
测试用例
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package 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
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package 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
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package 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@Componentpublic class NoRepeatSubmitAspect { private static final Logger logger = LoggerFactory.getLogger(NoRepeatSubmitAspect.class); private static Gson gson = new Gson(); private static final String SUFFIX = "SUFFIX"; @Autowired 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(); try { val = f.get(obj); // 得到此属性的值 // 设置键值 map.put(f.getName(), val); } catch (IllegalArgumentException e) { logger.error("getKeyAndValue IllegalArgumentException", e); } catch (IllegalAccessException e) { logger.error("getKeyAndValue IllegalAccessException", e); } } logger.info("扫描结果：" + gson.toJson(map)); return map; }} |
项目完整代码
https://github.com/daleyzou/PreventRepeatSubmit
以上就是springboot实现防重复提交和防重复点击的示例的详细内容，更多关于springboot实现防重复提交和防重复点击的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/daleyzou/p/noSubmitRepeat.html
