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增加依赖
<!-- 增加 redis 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- 增加 aop 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<!-- 增加 jedis 依赖 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.8.2</version>
</dependency>
配置 redis(application-redis.properties)
spring.redis.host=localhost
spring.redis.port=6379
redis.host=localhost
redis.port=6379
配置 redis(RedisConfig)
@Configuration
@PropertySource("classpath:/application-redis.properties")
public class RedisConfig {@Value("${redis.host}")
private String host;
@Value("${redis.port}")
private Integer port;
@Bean
public Jedis jedis(){return new Jedis(host,port);
}
}
自定义注解(NoRepeatSubmit)
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface NoRepeatSubmit {
/**
* 指定工夫内不可反复提交,单位毫秒秒
* @return
*/
int timeOut() default 3000;}
AOP(RepeatSubmit)
@Aspect
@Component
public class RepeatSubmit {@Around("@annotation(noRepeatSubmit)")
public Object around(ProceedingJoinPoint joinPoint, NoRepeatSubmit noRepeatSubmit){
// 获取注解
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
Method method = signature.getMethod();
// 获取类,办法
String className = method.getDeclaringClass().getName();
String methodName = method.getName();
// 组装 key 用户惟一标识 + 操作和办法
String key = "tokenKey" + className + methodName;
// 获取超时工夫
int timeOut = noRepeatSubmit.timeOut();
// 创建对象 判断 key 值是否存在 无则抛出 有则增加 redis 缓存中 设置工夫生效
Jedis jedis = new Jedis();
if (jedis.exists(key)){System.out.println("请勿反复申请拦挡");
throw new RuntimeException("请勿反复申请拦挡");
}else{jedis.set(key,"申请胜利");
System.out.println("申请胜利");
jedis.pexpire(key,timeOut);
}
Object proceed = null;
try {proceed = joinPoint.proceed();
} catch (Throwable throwable) {throwable.printStackTrace();
}
return proceed;
}
}
controller 应用
@RestController
public class MessageController {
@CrossOrigin
@DeleteMapping("deleteMessage")
@NoRepeatSubmit(timeOut = 3000)
public String deleteMessage(@RequestBody Message message){int i = messageService.deleteMusic(message.getId());
if (i>=1){return "数据删除胜利";}else {return "数据删除失败,请重试!";}
}
@CrossOrigin
@PostMapping("updateMessage")
@NoRepeatSubmit(timeOut = 3000)
public String updateMessage(@RequestBody Message message){if(message.getSex().equals("男")){message.setSex("1");
}else if (message.getSex().equals("女")){message.setSex("2");
}
int i = messageService.updateMusic(message);
if (i>=1){return "数据批改胜利";}else {return "数据批改失败,请重试!";}
}
}
正文完