当前位置 主页 > 服务器问题 > Linux/apache问题 >

    spring boot 防止重复提交实现方法详解

    栏目:Linux/apache问题 时间:2019-11-07 10:19

    本文实例讲述了spring boot 防止重复提交实现方法。分享给大家供大家参考,具体如下:

    服务器端实现方案:同一客户端在2秒内对同一URL的提交视为重复提交

    上代码吧

    pom.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.example</groupId>
     <artifactId>springboot-repeat-submit</artifactId>
     <version>1.0</version>
     <packaging>jar</packaging>
     <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.0.4.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <properties>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <java.version>1.8</java.version>
     </properties>
     <dependencies>
      <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
      <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-aop</artifactId>
      </dependency>
      <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
       <version>24.0-jre</version>
      </dependency>
     </dependencies>
     <build>
      <plugins>
       <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
       </plugin>
      </plugins>
     </build>
    </project>
    
    

    Application.java

    package com;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    /**
     * @author www.gaozz.club
     * @功能描述 防重复提交
     * @date 2018-08-26
     */
    @SpringBootApplication
    public class Application {
     public static void main(String[] args) {
      SpringApplication.run(Application.class, args);
     }
    }
    
    

    自定义注解NoRepeatSubmit.java

    package com.common;
    import java.lang.annotation.ElementType;
    import java.lang.annotation.Retention;
    import java.lang.annotation.RetentionPolicy;
    import java.lang.annotation.Target;
    @Target(ElementType.METHOD) // 作用到方法上
    @Retention(RetentionPolicy.RUNTIME) // 运行时有效
    /**
     * @功能描述 防止重复提交标记注解
     * @author www.gaozz.club
     * @date 2018-08-26
     */
    public @interface NoRepeatSubmit {
    }
    
    

    aop解析注解NoRepeatSubmitAop.java

    package com.common;
    import javax.servlet.http.HttpServletRequest;
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.Around;
    import org.aspectj.lang.annotation.Aspect;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    import org.springframework.web.context.request.RequestContextHolder;
    import org.springframework.web.context.request.ServletRequestAttributes;
    import com.google.common.cache.Cache;
    @Aspect
    @Component
    /**
     * @功能描述 aop解析注解
     * @author www.gaozz.club
     * @date 2018-08-26
     */
    public class NoRepeatSubmitAop {
     private Log logger = LogFactory.getLog(getClass());
     @Autowired
     private Cache<String, Integer> cache;
     @Around("execution(* com.example..*Controller.*(..)) && @annotation(nrs)")
     public Object arround(ProceedingJoinPoint pjp, NoRepeatSubmit nrs) {
      try {
       ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
       String sessionId = RequestContextHolder.getRequestAttributes().getSessionId();
       HttpServletRequest request = attributes.getRequest();
       String key = sessionId + "-" + request.getServletPath();
       if (cache.getIfPresent(key) == null) {// 如果缓存中有这个url视为重复提交
        Object o = pjp.proceed();
        cache.put(key, 0);
        return o;
       } else {
        logger.error("重复提交");
        return null;
       }
      } catch (Throwable e) {
       e.printStackTrace();
       logger.error("验证重复提交时出现未知异常!");
       return "{\"code\":-889,\"message\":\"验证重复提交时出现未知异常!\"}";
      }
     }
    }