spring boot 防止重复提交

    4.0.0
    com.example
    springboot-repeat-submit
    1.0
    jar
    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.4.RELEASE
         
    
    
        UTF-8
        UTF-8
        1.8
    
    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.boot
            spring-boot-starter-aop
        
        
            com.google.guava
            guava
            24.0-jre
        
    
    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

    
        
            %d[%F:%L][%p]:%m%n
        
    
    
        
    

package com;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class Application {    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

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

public @interface NoRepeatSubmit {
}

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@Componentpublic class NoRepeatSubmitAop {    private Log logger = LogFactory.getLog(getClass());    @Autowired
    private Cache 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!"}";
        }

    }

}

package com.common;import java.util.concurrent.TimeUnit;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import com.google.common.cache.Cache;import com.google.common.cache.CacheBuilder;@Configurationpublic class UrlCache {    @Bean
    public Cache getCache() {        return CacheBuilder.newBuilder().expireAfterWrite(2L, TimeUnit.SECONDS).build();// 缓存有效期为2秒
    }
}

package com.example;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import com.common.NoRepeatSubmit;@RestControllerpublic class TestController {
    @RequestMapping("/test")
    @NoRepeatSubmit
    public String test() {        return ("程序逻辑返回");
    }

}

然后F5刷新查看效果

QQ图片20180914165017.png

spring:  redis:    host: 192.168.1.92
    port: 6379    password: 123456

package com.common;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.data.redis.connection.RedisStandaloneConfiguration;import org.springframework.data.redis.connection.jedis.JedisClientConfiguration;import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;import org.springframework.data.redis.core.RedisTemplate;@Configurationpublic class RedisConfig {    @Bean
    @ConfigurationProperties(prefix = "spring.redis")    public JedisConnectionFactory getConnectionFactory() {        return new JedisConnectionFactory(new RedisStandaloneConfiguration(), JedisClientConfiguration.builder().build());
    }    @Bean
     RedisTemplate getRedisTemplate() {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(getConnectionFactory());        return redisTemplate;
    }

}

作者：不知不怪
链接：https://www.jianshu.com/p/09c6b05b670a