结合redis限制接口访问次数

    接了一个需求,公司有要调用一个其他平台的收费接口,调用一次,收取一次费用;需要封装一下,防止被恶意盗刷;自己思考了一下,,记录每个用户的访问次数,调用一次,累计数量+1,当达到设置上限 是,直接返回提示信息;;

    初步构思,从2个维度限制;1、限制每个用户每小时内的最大访问次数,,2限制每个用户每天的最大访问次数;;结合redis的 incrby 和TTL实现,,redis自增方法保证并发情况下 +1 操作线程安全; redis的 key  为  接口名+用户唯一标识+固定字符串(日期),value为访问次数,,并设置过期时间为  1小时,,一天; 代码如下:

  pom.xml 引入redis 依赖

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
      <version>2.3.4.RELEASE</version>
</dependency>

application.properties redis配置(测试使用单节点)

# Redis数据库索引(默认为0)
spring.redis.database=0
# Redis服务器地址
spring.redis.host=127.0.0.1
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码(默认为空)
spring.redis.password=
# 连接池最大连接数(使用负值表示没有限制)
spring.redis.pool.max-active=200
# 连接池最大阻塞等待时间(使用负值表示没有限制)
spring.redis.pool.max-wait=-1
# 连接池中的最大空闲连接
spring.redis.pool.max-idle=10
# 连接池中的最小空闲连接
spring.redis.pool.min-idle=0
# 连接超时时间(毫秒)
spring.redis.timeout=1000






#哨兵模式redis集群配置,就是为了通过redis找主节点,做到无感切换
#spring.redis.password=123456
#spring.redis.sentinel.master=mymaster
#spring.redis.sentinel.nodes=192.168.184.133:26379,192.168.184.135:26379,192.168.184.136:26379
##连接超时时间
#spring.redis.timeout=6000ms
##Redis数据库索引(默认为0)
#spring.redis.database=0
## 连接池配置,springboot2.0中直接使用jedis或者lettuce配置连接池,默认为lettuce连接池
##连接池最大连接数(使用负值表示没有限制)
#spring.redis.jedis.pool.max-active=8
##连接池最大阻塞等待时间(使用负值表示没有限制)
#spring.redis.jedis.pool.max-wait=-1s
##连接池中的最大空闲连接
#spring.redis.jedis.pool.max-idle=8
##接池中的最小空闲连接
#spring.redis.jedis.pool.min-idle=0


#############################

#连接超时时间
#spring.redis.cluster.nodes=192.168.184.133:7000,192.168.184.133:7001,192.168.184.133:7002,192.168.184.133:7003,192.168.184.133:7004,192.168.184.133:7005
#spring.redis.password=123456
#spring.redis.timeout=6000ms
#Redis数据库索引(默认为0)
#spring.redis.database=0
# 连接池配置,springboot2.0中直接使用jedis或者lettuce配置连接池,默认为lettuce连接池
#连接池最大连接数(使用负值表示没有限制)
#spring.redis.jedis.pool.max-active=8
#连接池最大阻塞等待时间(使用负值表示没有限制)
#spring.redis.jedis.pool.max-wait=-1s
#连接池中的最大空闲连接
#spring.redis.jedis.pool.max-idle=8
#接池中的最小空闲连接
#spring.redis.jedis.pool.min-idle=0

redis配置类 

package com.wanglin.study.design.pattern.work.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
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.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @ClassName RedisConfig
 * @Description
 * @Author WANGQW
 * @Date 2021/3/3 9:59
 **/
@Configuration
public class RedisConfig {

    @Bean
    @SuppressWarnings("all")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

}

redis工具类

package com.wanglin.study.design.pattern.work.utils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * @ClassName RedisUtil
 * @Description
 * @Author WANGQW
 * @Date 2021/3/3 10:01
 **/
@Component
public class RedisUtil {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
        /**
         * 指定缓存失效时间
         * @param key 键
         * @param time 时间(秒)
         * @return
         */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

        /**
         * 根据key 获取过期时间
         * @param key 键 不能为null
         * @return 时间(秒) 返回0代表为永久有效
         */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

        /**
         * 判断key是否存在
         * @param key 键
         * @return true 存在 false不存在
         */
    public boolean hasKey(String key) {
        try {
            return redisTemplate.hasKey(key);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 删除缓存
         * @param key 可以传一个值 或多个
         */
    @SuppressWarnings("unchecked")
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));
            }
        }
    }
        // ============================String=============================
        /**
         * 普通缓存获取
         * @param key 键
         * @return*/
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }
        /**
         * 普通缓存放入
         * @param key 键
         * @param value 值
         * @return true成功 false失败
         */
    public boolean set(String key, Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 普通缓存放入并设置时间
         * @param key 键
         * @param value 值
         * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
         * @return true成功 false 失败
         */
    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0) {
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /** 
         * 递增  如果不存在key,自动创建一个key;
         * @param key 键
         * @param delta 要增加几(大于0)
         * @return
         */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递增因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, delta);
    }
        /**
         * 递减
         * @param key 键
         * @param delta 要减少几(小于0)
         * @return
         */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递减因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, -delta);
    }
        // ================================Map=================================
        /**
         * HashGet
         * @param key 键 不能为null
         * @param item 项 不能为null
         * @return*/
    public Object hget(String key, String item) {
        return redisTemplate.opsForHash().get(key, item);
    }


        /**
         * 获取hashKey对应的所有键值
         * @param key 键
         * @return 对应的多个键值
         */
    public Map<Object, Object> hmget(String key) {
        return redisTemplate.opsForHash().entries(key);
    }
        /**
         * HashSet
         * @param key 键
         * @param map 对应多个键值
         * @return true 成功 false 失败
         */
    public boolean hmset(String key, Map<String, Object> map) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * HashSet 并设置时间
         * @param key 键
         * @param map 对应多个键值
         * @param time 时间(秒)
         * @return true成功 false失败
         */
    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 向一张hash表中放入数据,如果不存在将创建
         * @param key 键
         * @param item 项
         * @param value 值
         * @return true 成功 false失败
         */
    public boolean hset(String key, String item, Object value) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 向一张hash表中放入数据,如果不存在将创建
         * @param key 键
         * @param item 项
         * @param value 值
         * @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
         * @return true 成功 false失败
         */
    public boolean hset(String key, String item, Object value, long time) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 删除hash表中的值
         * @param key 键 不能为null
         * @param item 项 可以使多个 不能为null
         */
    public void hdel(String key, Object... item) {
        redisTemplate.opsForHash().delete(key, item);
    }
        /**
         * 判断hash表中是否有该项的值
         * @param key 键 不能为null
         * @param item 项 不能为null
         * @return true 存在 false不存在
         */
    public boolean hHasKey(String key, String item) {
        return redisTemplate.opsForHash().hasKey(key, item);
    }
        /**
         * hash递增 如果不存在,就会创建一个 并把新增后的值返回
         * @param key 键
         * @param item 项
         * @param by 要增加几(大于0)
         * @return
         */
    public double hincr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, by);
    }
        /**
         * hash递减
         * @param key 键
         * @param item 项
         * @param by 要减少记(小于0)
         * @return
         */
    public double hdecr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, -by);
    }
        // ============================set=============================
        /**
         * 根据key获取Set中的所有值
         * @param key 键
         * @return
         */
    public Set<Object> sGet(String key) {
        try {
            return redisTemplate.opsForSet().members(key);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
        /**
         * 根据value从一个set中查询,是否存在
         * @param key 键
         * @param value 值
         * @return true 存在 false不存在
         */
    public boolean sHasKey(String key, Object value) {
        try {
            return redisTemplate.opsForSet().isMember(key, value);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 将数据放入set缓存
         * @param key 键
         * @param values 值 可以是多个
         * @return 成功个数
         */
    public long sSet(String key, Object... values) {
        try {
            return redisTemplate.opsForSet().add(key, values);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
        /**
         336
         * 将set数据放入缓存
         337
         * @param key 键
        338
         * @param time 时间(秒)
        339
         * @param values 值 可以是多个
        340
         * @return 成功个数
        341
         */
    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0)
            expire(key, time);
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
        /**
         * 获取set缓存的长度
         * @param key 键
         * @return
         */
    public long sGetSetSize(String key) {
        try {
            return redisTemplate.opsForSet().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
        /**
         * 移除值为value的
         * @param key 键
         * @param values 值 可以是多个
         * @return 移除的个数
         */
    public long setRemove(String key, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
        // ===============================list=================================
        /**
         * 获取list缓存的内容
         * @param key 键
         * @param start 开始
         * @param end 结束 0 到 -1代表所有值
         * @return
         */
    public List<Object> lGet(String key, long start, long end) {
        try {
            return redisTemplate.opsForList().range(key, start, end);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
        /**
         * 获取list缓存的长度
         * @param key 键
         * @return
         */
    public long lGetListSize(String key) {
        try {
            return redisTemplate.opsForList().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
        /**
         * 通过索引 获取list中的值
         * @param key 键
         * @param index 索引 index>=0时, 0 表头,1 第二个元素,依次类推;index<0时,-1,表尾,-2倒数第二个元素,依次类推
         * @return
         */
    public Object lGetIndex(String key, long index) {
        try {
            return redisTemplate.opsForList().index(key, index);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
        /**
         * 将list放入缓存
         * @param key 键
         * @param value 值
         * @param time 时间(秒)
         * @return
         */
    public boolean lSet(String key, Object value) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 将list放入缓存
         * @param key 键
         * @param value 值
         * @param time 时间(秒)
         * @return
         */
    public boolean lSet(String key, Object value, long time) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            if (time > 0)
            expire(key, time);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 将list放入缓存
         * @param key 键
         * @param value 值
         * @param time 时间(秒)
         * @return
         */
    public boolean lSet(String key, List<Object> value) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 将list放入缓存
         * @param key 键
         * @param value 值
         * @param time 时间(秒)
         * @return
         */
    public boolean lSet(String key, List<Object> value, long time) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            if (time > 0)
            expire(key, time);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 根据索引修改list中的某条数据
         * @param key 键
         * @param index 索引
         * @param value 值
         * @return
         */
    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            redisTemplate.opsForList().set(key, index, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
        /**
         * 移除N个值为value
         * @param key 键
         * @param count 移除多少个
         * @param value 值
         * @return 移除的个数
         */
    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = redisTemplate.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
}

使用spring aop 结合自定义注解完成 访问次数累加;

自定义注解:

  

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@Documented
public @interface IAccessRestrictionsForHour {

}

切面:

 

package com.wanglin.study.design.pattern.work.aspect;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.ruijie.framework.common.RemoteResult;
import com.wanglin.study.design.pattern.work.annotion.IAccessRestrictionsForHour;
import com.wanglin.study.design.pattern.work.domain.Constants;
import com.wanglin.study.design.pattern.work.domain.User;
import com.wanglin.study.design.pattern.work.utils.RedisUtil;
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.stereotype.Component;
import org.springframework.util.StringUtils;

import java.lang.reflect.Method;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @ClassName AccessRestrictionsAspect
 * @Description
 * @Author WANGQW
 * @Date 2021/3/2 14:21
 **/
@Aspect
@Component
public class AccessRestrictionsAspect {

    private static final Logger log = LoggerFactory.getLogger(AccessRestrictionsAspect.class);

    @Autowired
    private RedisUtil redisUtil;


    @Pointcut("execution(* com.wanglin.study.design.pattern.work.controller.*.*(..)) && @annotation(com.wanglin.study.design.pattern.work.annotion.IAccessRestrictionsForHour)")
    public void before(){}


    @Before("before()")
    public void requestLimit(JoinPoint joinPoint) throws Exception{

        Object[] args = joinPoint.getArgs();
        User user = JSON.parseObject(JSON.toJSONString(args[0]), new TypeReference<User>() {});
        if(null == user || StringUtils.isEmpty(user.getUserId())){
            throw new RuntimeException("当前用户未登录,请先登录后重试!");
        }
        log.info(user.getUserId()+"=============="+user.getUserName());

        String redisKey = Constants.ACCESS_LIMIT + Constants.ATRRBITE_SPLIT + user.getUserId();
        Object o = redisUtil.get(redisKey);
//        IAccessRestrictionsForHour limit = this.getAnnotation(joinPoint);
//        if(limit == null) {
//            return;
//        }
     
        long incr = redisUtil.incr(redisKey, 1);
        if(1l == incr){
       //设置过期时间
redisUtil.expire(redisKey,30);
        }
         if(incr >= 30 ){
             throw new RuntimeException("调用频繁,请稍后再试!");
         }


    }

    /**
     * @Description: 获得注解
     */
    private IAccessRestrictionsForHour getAnnotation(JoinPoint joinPoint) throws Exception {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();

        if (method != null) {
            return method.getAnnotation(IAccessRestrictionsForHour.class);
        }
        return null;
    }

}

切面最终版:

  

package com.ruijie.demo.aspect;

import com.ruijie.demo.entity.domain.AccessRecord;
import com.ruijie.demo.exception.TycException;
import com.ruijie.demo.service.AccessRecordService;
import com.ruijie.demo.service.UpperLimitService;
import com.ruijie.demo.util.GuavaCacheManager;
import com.ruijie.framework.common.RemoteResult;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
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 org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;

/**
 * @ClassName UpperLimitAspect
 * @Description
 * @Author WANGQW
 * @Date 2021/3/18 10:31
 **/
@Aspect
@Component
public class UpperLimitAspect {

    private static final Logger log = LoggerFactory.getLogger(UpperLimitAspect.class);

    @Autowired
    private UpperLimitService upperLimitService;

    @Autowired
    private AccessRecordService accessRecordService;


    @Pointcut("execution(* com.ruijie.demo.api.*.*(..)) && @annotation(com.ruijie.demo.annotaion.UpperLimitAnnotation)")
    public void pointCut(){}

    @Around("pointCut()")
    public RemoteResult around(ProceedingJoinPoint joinPoint) throws Throwable {
        log.info("进入控制访问上限切面=======================satrt");

        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        String sysId = request.getHeader("sysId");
        String uri = request.getRequestURI();
        upperLimitService.checkAndIncrAccessNumber(sysId,uri);

        // 进入真正方法的 都是未达访问上限的请求
        RemoteResult proceed = (RemoteResult)joinPoint.proceed();
        //访问记录
        AccessRecord accessRecord = new AccessRecord();
        accessRecord.setSysId(sysId);
        accessRecord.setPath(uri);
        accessRecord.setCreateTime(new Date());
        accessRecord.setReason(proceed.getErr());
        accessRecord.setSuccess(proceed.getStatus());
        accessRecordService.insertAccessRecord(accessRecord);
        log.info("控制访问上限切面=======================end");
        return proceed;
    }

    //异常通知
    @AfterThrowing(value="execution(* com.ruijie.demo.api.*.*(..)) && @annotation(com.ruijie.demo.annotaion.UpperLimitAnnotation)",throwing="e")
    public void afterThrowing(JoinPoint joinPoint,TycException e){
        log.error("异常通知=======================start");
        HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
        String sysId = request.getHeader("sysId");
        String uri = request.getRequestURI();
        AccessRecord accessRecord = new AccessRecord();
        accessRecord.setSysId(sysId);
        accessRecord.setPath(uri);
        accessRecord.setCreateTime(new Date());
        accessRecord.setReason(e.getMessage());
        accessRecord.setSuccess(e.getErrCode());
        accessRecordService.insertAccessRecord(accessRecord);
        log.error("异常通知=======================end");
    }
}

  

controller

package com.wanglin.study.design.pattern.work.controller;

import com.wanglin.study.design.pattern.work.annotion.IAccessRestrictionsForHour;
import com.wanglin.study.design.pattern.work.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * @ClassName LimitController
 * @Description
 * @Author WANGQW
 * @Date 2021/3/2 14:39
 **/
@Controller
public class LimitController {

    @IAccessRestrictionsForHour
    @PostMapping("test")
    @ResponseBody
    public String testMethod(@RequestBody User user){
        return "success";
    }

    @PostMapping("test2")
    @ResponseBody
    public String testMethod2(@RequestBody User user){
        return "success2222222222";
    }
}
原文地址:https://www.cnblogs.com/wl20200316/p/14480640.html