redis+Spring初级应用

2018-07-09 13:29:49来源：博客园阅读 ()

<!-- spring-redis实现 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
            <version>2.4.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-commons</artifactId>
            <version>1.13.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.6.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>
        <!-- Ehcache实现,用于参考 -->
        <dependency>
            <artifactId>ehcache</artifactId>
            <groupId>net.sf.ehcache</groupId>
            <version>2.7.2</version>
        </dependency>
             <!-- jackson -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.1.0</version>
        </dependency>

redis.properties

redis.host=119.29.79.250
redis.port=6379
redis.pass=****
redis.dbIndex=0  
redis.expiration=3000  
redis.maxIdle=300  
redis.maxActive=600  
redis.maxWait=1000  
redis.testOnBorrow=true

Spring-redis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"

    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util"
    xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:cache="http://www.springframework.org/schema/cache"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
        http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.2.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd
        http://www.springframework.org/schema/cache  
            http://www.springframework.org/schema/cache/spring-cache-4.1.xsd">


    <aop:config proxy-target-class="true" />
    <cache:annotation-driven cache-manager="redisCacheManager"/>
    <context:property-placeholder location="classpath*:redis.properties" />
    <!-- redis数据源 -->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="${redis.maxIdle}" />
        <property name="maxTotal" value="${redis.maxActive}" />
        <property name="maxWaitMillis" value="${redis.maxWait}" />
        <property name="testOnBorrow" value="${redis.testOnBorrow}" />
    </bean>
    <!-- Spring-redis连接池管理工厂 -->
    <!-- 连接池配置，类似数据库连接池 -->
    <bean id="jedisConnectionFactory"
        class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.host}"></property>
        <property name="port" value="${redis.port}"></property>
        <property name="password" value="${redis.pass}"></property>
        <property name="poolConfig" ref="poolConfig"></property>
    </bean>

    <!-- redis template -->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory" />
        <!--如果不配置Serializer，那么存储的时候缺省使用String，如果用User类型存储，那么会提示错误User can't cast 
            to String！！ -->
         <property name="keySerializer">
            <bean
                class="org.springframework.data.redis.serializer.StringRedisSerializer" />
        </property>
        <property name="valueSerializer">
            <bean
                class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" />
        </property>
        <property name="hashKeySerializer">
            <bean
                class="org.springframework.data.redis.serializer.StringRedisSerializer" />
        </property>
        <property name="hashValueSerializer">
            <bean
                class="org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer" />
        </property> 
        <!--开启事务 -->
        <property name="enableTransactionSupport" value="true"></property>
    </bean>




     <!-- 配置RedisCacheManager -->
    <bean id="redisCacheManager" class="org.springframework.data.redis.cache.RedisCacheManager">
        <constructor-arg name="redisOperations" ref="redisTemplate" />
        <property name="defaultExpiration" value="${redis.expiration}" />
    </bean>

    <!-- 配置RedisCacheConfig -->
    <bean id="redisCacheConfig" class="luowuhui.redis.config.RedisCacheConfig">
        <constructor-arg ref="jedisConnectionFactory"/>
        <constructor-arg ref="redisTemplate"/>
        <constructor-arg ref="redisCacheManager"/>
    </bean>
</beans>

RedisCacheConfig.java

package luowuhui.redis.config;

import java.lang.reflect.Method;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.CacheErrorHandler;
import org.springframework.cache.interceptor.CacheResolver;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
@EnableCaching
@Configuration
public class RedisCacheConfig extends CachingConfigurerSupport {
    private volatile JedisConnectionFactory jedisConnectionFactory;
    private volatile RedisTemplate<String, Object> redisTemplate;
    private volatile RedisCacheManager redisCacheManager;

    public RedisCacheConfig() {
        super();
    }
    
     /**
     * 带参数的构造方法 初始化所有的成员变量
     * 
     * @param jedisConnectionFactory
     * @param redisTemplate
     * @param redisCacheManager
     */
    public RedisCacheConfig(JedisConnectionFactory jedisConnectionFactory, RedisTemplate<String, Object> redisTemplate,
            RedisCacheManager redisCacheManager) {
        this.jedisConnectionFactory = jedisConnectionFactory;
        this.redisTemplate = redisTemplate;
        this.redisCacheManager = redisCacheManager;
    }

    
    
    
    public JedisConnectionFactory getJedisConnectionFactory() {
        return jedisConnectionFactory;
    }

    public RedisTemplate<String, Object> getRedisTemplate() {
        return redisTemplate;
    }

    public RedisCacheManager getRedisCacheManager() {
        return redisCacheManager;
    }


     @Bean
        public KeyGenerator keyGenerator() {
          return new KeyGenerator() {
            @Override
            public Object generate(Object o, Method method, Object... params) {
                //规定  本类名+方法名+参数名 为key
                StringBuilder sb = new StringBuilder();
                sb.append(o.getClass().getName());
                sb.append("-");
                sb.append(method.getName());
                sb.append("-");
                for (Object param : params) {
                    sb.append(param.toString());
                }
                return sb.toString();
            }
          };
        }
}

RedisUtil.java

package luowuhui.redis.pool;


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

import javax.annotation.Resource;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;  
  
  
/** 
 *  
 * @author QLQ
 * 基于spring和redis的redisTemplate工具类 
 * 针对所有的hash 都是以h开头的方法 
 * 针对所有的Set 都是以s开头的方法                    不含通用方法 
 * 针对所有的List 都是以l开头的方法 
 */  
@Component//交给Spring管理(在需要缓存的地方自动注入即可使用)
public class RedisUtil {  
  
    @Resource 
    private RedisTemplate<String, Object> redisTemplate;  
    public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {  
        this.redisTemplate = redisTemplate;  
    }  
    //=============================common============================  
    /** 
     * 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(CollectionUtils.arrayToList(key));  
            }  
        }  
    }  
      
    //============================String=============================  
    /** 
     * 普通缓存获取 
     * @param key 键 
     * @return 值 
     */  
    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 
     * @param key 键 
     * @param by 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 by 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 值 
     */  
    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;  
        }  
    }  
      
    /** 
     * 将set数据放入缓存 
     * @param key 键 
     * @param time 时间(秒) 
     * @param values 值 可以是多个 
     * @return 成功个数 
     */  
    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;  
        }  
    }  
      //获取所有key
    
    public Set<String> getAll_Keys() {
        Set<String> keys = redisTemplate.keys("*");
        return keys;
        
    }
}