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支持自定义注解实现接口限流

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This commit is contained in:
RuoYi 2021-08-17 14:08:18 +08:00
parent 03cf98d3c9
commit 5c155f5f11
8 changed files with 225 additions and 15 deletions
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2
ruoyi-common/src/main/java/com/ruoyi/common/annotation/Excels.java
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@ -14,5 +14,5 @@ import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
public @interface Excels
{
Excel[] value();
public Excel[] value();
}

40
ruoyi-common/src/main/java/com/ruoyi/common/annotation/RateLimiter.java Normal file
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@ -0,0 +1,40 @@
package com.ruoyi.common.annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.enums.LimitType;
/**
* 限流注解
*
* @author ruoyi
*/
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface RateLimiter
{
/**
* 限流key
*/
public String key() default Constants.RATE_LIMIT_KEY;
/**
* 限流时间,单位秒
*/
public int time() default 60;
/**
* 限流次数
*/
public int count() default 100;
/**
* 限流类型
*/
public LimitType limitType() default LimitType.DEFAULT;
}

5
ruoyi-common/src/main/java/com/ruoyi/common/constant/Constants.java
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@ -74,6 +74,11 @@ public class Constants
*/
public static final String REPEAT_SUBMIT_KEY = "repeat_submit:";
/**
* 限流 redis key
*/
public static final String RATE_LIMIT_KEY = "rate_limit:";
/**
* 验证码有效期（分钟）
*/

20
ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java Normal file
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@ -0,0 +1,20 @@
package com.ruoyi.common.enums;
/**
* 限流类型
*
* @author ruoyi
*/
public enum LimitType
{
/**
* 默认策略全局限流
*/
DEFAULT,
/**
* 根据请求者IP进行限流
*/
IP
}

116
ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java Normal file
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@ -0,0 +1,116 @@
package com.ruoyi.framework.aspectj;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.List;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.RedisScript;
import org.springframework.stereotype.Component;
import com.ruoyi.common.annotation.RateLimiter;
import com.ruoyi.common.enums.LimitType;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.ServletUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.ip.IpUtils;
/**
* 限流处理
*
* @author ruoyi
*/
@Aspect
@Component
public class RateLimiterAspect
{
private static final Logger log = LoggerFactory.getLogger(RateLimiterAspect.class);
private RedisTemplate<Object, Object> redisTemplate;
private RedisScript<Long> limitScript;
@Autowired
public void setRedisTemplate1(RedisTemplate<Object, Object> redisTemplate)
{
this.redisTemplate = redisTemplate;
}
@Autowired
public void setLimitScript(RedisScript<Long> limitScript)
{
this.limitScript = limitScript;
}
// 配置织入点
@Pointcut("@annotation(com.ruoyi.common.annotation.RateLimiter)")
public void rateLimiterPointCut()
{
}
@Before("rateLimiterPointCut()")
public void doBefore(JoinPoint point) throws Throwable
{
RateLimiter rateLimiter = getAnnotationRateLimiter(point);
String key = rateLimiter.key();
int time = rateLimiter.time();
int count = rateLimiter.count();
String combineKey = getCombineKey(rateLimiter, point);
List<Object> keys = Collections.singletonList(combineKey);
try
{
Long number = redisTemplate.execute(limitScript, keys, count, time);
if (StringUtils.isNull(number) || number.intValue() > count)
{
throw new ServiceException("访问过于频繁，请稍后再试");
}
log.info("限制请求'{}',当前请求'{}',缓存key'{}'", count, number.intValue(), key);
}
catch (ServiceException e)
{
throw e;
}
catch (Exception e)
{
throw new RuntimeException("服务器限流异常，请稍后再试");
}
}
/**
* 是否存在注解，如果存在就获取
*/
private RateLimiter getAnnotationRateLimiter(JoinPoint joinPoint)
{
Signature signature = joinPoint.getSignature();
MethodSignature methodSignature = (MethodSignature) signature;
Method method = methodSignature.getMethod();
if (method != null)
{
return method.getAnnotation(RateLimiter.class);
}
return null;
}
public String getCombineKey(RateLimiter rateLimiter, JoinPoint point)
{
StringBuffer stringBuffer = new StringBuffer(rateLimiter.key());
if (rateLimiter.limitType() == LimitType.IP)
{
stringBuffer.append(IpUtils.getIpAddr(ServletUtils.getRequest()));
}
MethodSignature signature = (MethodSignature) point.getSignature();
Method method = signature.getMethod();
Class<?> targetClass = method.getDeclaringClass();
stringBuffer.append("-").append(targetClass.getName()).append("- ").append(method.getName());
return stringBuffer.toString();
}
}

29
ruoyi-framework/src/main/java/com/ruoyi/framework/config/RedisConfig.java
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@ -6,6 +6,7 @@ import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
@ -47,4 +48,32 @@ public class RedisConfig extends CachingConfigurerSupport
template.afterPropertiesSet();
return template;
}
@Bean
public DefaultRedisScript<Long> limitScript()
{
DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
redisScript.setScriptText(limitScriptText());
redisScript.setResultType(Long.class);
return redisScript;
}
/**
* 限流脚本
*/
private String limitScriptText()
{
return "local key = KEYS[1]\n" +
"local count = tonumber(ARGV[1])\n" +
"local time = tonumber(ARGV[2])\n" +
"local current = redis.call('get', key);\n" +
"if current and tonumber(current) > count then\n" +
" return current;\n" +
"end\n" +
"current = redis.call('incr', key)\n" +
"if tonumber(current) == 1 then\n" +
" redis.call('expire', key, time)\n" +
"end\n" +
"return current;";
}
}

6
ruoyi-ui/src/utils/request.js
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@ -29,9 +29,9 @@ service.interceptors.request.use(config => {
if (typeof value === 'object') {
for (const key of Object.keys(value)) {
if (value[key] !== null && typeof (value[key]) !== 'undefined') {
let params = propName + '[' + key + ']'
let subPart = encodeURIComponent(params) + '='
url += subPart + encodeURIComponent(value[key]) + '&'
let params = propName + '[' + key + ']';
let subPart = encodeURIComponent(params) + '=';
url += subPart + encodeURIComponent(value[key]) + '&';
}
}
} else {

22
ruoyi-ui/src/utils/ruoyi.js
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@ -55,17 +55,17 @@ export function resetForm(refName) {
// 添加日期范围
export function addDateRange(params, dateRange, propName) {
let search = params
search.params = typeof (search.params) === 'object' && search.params !== null && !Array.isArray(search.params) ? search.params : {}
dateRange = Array.isArray(dateRange) ? dateRange : []
if (typeof (propName) === 'undefined') {
search.params['beginTime'] = dateRange[0]
search.params['endTime'] = dateRange[1]
} else {
search.params['begin' + propName] = dateRange[0]
search.params['end' + propName] = dateRange[1]
}
return search
let search = params;
search.params = typeof (search.params) === 'object' && search.params !== null && !Array.isArray(search.params) ? search.params : {};
dateRange = Array.isArray(dateRange) ? dateRange : [];
if (typeof (propName) === 'undefined') {
search.params['beginTime'] = dateRange[0];
search.params['endTime'] = dateRange[1];
} else {
search.params['begin' + propName] = dateRange[0];
search.params['end' + propName] = dateRange[1];
}
return search;
}
// 回显数据字典