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服务器之家 - 数据库 - Redis - springmvc集成使用redis过程

springmvc集成使用redis过程

2021-11-24 17:19蝴蝶Maple Redis

这篇文章主要介绍了springmvc集成使用redis过程，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教

Redis安装

首先安装redis。这个就不重点介绍了。windos下载redis就行。

我用的是mac

用命令行安装的。

安装命令

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yum install redis

运行命令

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sudo redis-server

这样就安装运行成功了。

spring集成redis

首先你需要下载驱动包，下载 jedis.jar，确保下载最新驱动包。然后导包。

在spring配置文件里我这是ApplicationContext .xml文件添加

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<!-- 引入同文件夹下的redis属性配置文件 -->
 <import resource="spring-redis.xml" />

然后用创建spring-redis.xml文件

写入

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<?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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
        
    <!-- 缓存的层级-->
    <context:component-scan base-package="com.niit.cache" />
    <!-- 引入redis配置 -->
    <context:property-placeholder location="/WEB-INF/classes/redis.properties" ignore-unresolvable="true"/>
 
    <!-- Redis 配置 -->
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxTotal" value="${redis.pool.maxTotal}" />
        <property name="maxIdle" value="${redis.pool.maxIdle}" />
        <property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}" />
        <property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
    </bean>
 
    <!-- JedisCluster 集群高可用配置 -->
    <!--<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">
        <constructor-arg index="0">
            <set>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip1}" />
                    <constructor-arg index="1" value="${redis.port1}" type="int" />
                </bean>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip2}" />
                    <constructor-arg index="1" value="${redis.port2}" type="int" />
                </bean>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip3}" />
                    <constructor-arg index="1" value="${redis.port3}" type="int" />
                </bean>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip4}" />
                    <constructor-arg index="1" value="${redis.port4}" type="int" />
                </bean>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip5}" />
                    <constructor-arg index="1" value="${redis.port5}" type="int" />
                </bean>
                <bean class="redis.clients.jedis.HostAndPort">
                    <constructor-arg index="0" value="${redis.ip6}" />
                    <constructor-arg index="1" value="${redis.port6}" type="int" />
                </bean>
            </set>
        </constructor-arg>
        <constructor-arg index="1" value="2000" type="int"></constructor-arg>
        <constructor-arg index="2" value="100" type="int"></constructor-arg>
        <constructor-arg index="3" ref="jedisPoolConfig"></constructor-arg>
    </bean>-->
 
    <!--redis Sentinel主从高可用方案配置 -->
    <!-- <bean id="sentinelConfiguration" class="org.springframework.data.redis.connection.RedisSentinelConfiguration">
        <property name="master">
            <bean class="org.springframework.data.redis.connection.RedisNode">
                <property name="name" value="master-1"></property>
            </bean>
        </property>
        <property name="sentinels">
            <set>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${sentinel1.ip}"></constructor-arg>
                    <constructor-arg name="port" value="${sentinel1.port}"></constructor-arg>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${sentinel2.ip}"></constructor-arg>
                    <constructor-arg name="port" value="${sentinel2.port}"></constructor-arg>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${sentinel3.ip}"></constructor-arg>
                    <constructor-arg name="port" value="${sentinel3.port}"></constructor-arg>
                </bean>
            </set>
        </property>
    </bean>
    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" p:use-pool="true">
        <property name="password" value="${redis.pass}" />
        <property name="poolConfig">
            <ref bean="jedisPoolConfig" />
        </property>
        <constructor-arg name="sentinelConfig" ref="sentinelConfiguration" />
    </bean> -->
 
    <!-- redis单节点数据库连接配置 -->
    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="hostName" value="${redis.ip}" />
        <property name="port" value="${redis.port}" />
        <property name="password" value="${redis.pass}" />
        <property name="poolConfig" ref="jedisPoolConfig" />
    </bean>
 
    <!-- redisTemplate配置，redisTemplate是对Jedis的对redis操作的扩展，有更多的操作，封装使操作更便捷 -->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory" />
    </bean>
    
</beans>
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public class RedisCache {
    public final static String CAHCENAME = "niitcache";// 缓存名
    public final static int CAHCETIME = 60;// 默认缓存时间 60S
    public final static int CAHCEHOUR = 60 * 60;// 默认缓存时间 1hr
    public final static int CAHCEDAY = 60 * 60 * 24;// 默认缓存时间 1Day
    public final static int CAHCEWEEK = 60 * 60 * 24 * 7;// 默认缓存时间 1week
    public final static int CAHCEMONTH = 60 * 60 * 24 * 7 * 30;// 默认缓存时间 1month
 
    @Autowired
    private RedisTemplate<String, String> redisTemplate;
    public <T> boolean putCache(String key, T obj) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serialize(obj);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.setNX(bkey, bvalue);
            }
        });
        return result;
    }
 
    public <T> void putCacheWithExpireTime(String key, T obj, final long expireTime) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serialize(obj);
        redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                connection.setEx(bkey, expireTime, bvalue);
                return true;
            }
        });
    }
 
    public <T> boolean putListCache(String key, List<T> objList) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serializeList(objList);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.setNX(bkey, bvalue);
            }
        });
        return result;
    }
 
    public <T> boolean putListCacheWithExpireTime(String key, List<T> objList, final long expireTime) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serializeList(objList);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                connection.setEx(bkey, expireTime, bvalue);
                return true;
            }
        });
        return result;
    }
 
    public <T> T getCache(final String key, Class<T> targetClass) {
        byte[] result = redisTemplate.execute(new RedisCallback<byte[]>() {
            @Override
            public byte[] doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.get(key.getBytes());
            }
        });
        if (result == null) {
            return null;
        }
        return ProtoStuffSerializerUtil.deserialize(result, targetClass);
    }
 
    public <T> List<T> getListCache(final String key, Class<T> targetClass) {
        byte[] result = redisTemplate.execute(new RedisCallback<byte[]>() {
            @Override
            public byte[] doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.get(key.getBytes());
            }
        });
        if (result == null) {
            return null;
        }
        return ProtoStuffSerializerUtil.deserializeList(result, targetClass);
    }
 
    /**
     * 精确删除key
     *
     * @param key
     */
    public void deleteCache(String key) {
        redisTemplate.delete(key);
    }
 
    /**
     * 模糊删除key
     *
     * @param pattern
     */
    public void deleteCacheWithPattern(String pattern) {
        Set<String> keys = redisTemplate.keys(pattern);
        redisTemplate.delete(keys);
    }
 
    /**
     * 清空所有缓存
     */
    public void clearCache() {
        deleteCacheWithPattern(RedisCache.CAHCENAME + "|*");
    }
}

创建redis的配置文件 redis.properties。

写入

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#redis config
redis.pass=
redis.pool.maxTotal=105
redis.pool.maxIdle=10
redis.pool.maxWaitMillis=5000
redis.pool.testOnBorrow=true
 
redis.ip=127.0.0.1
redis.port=6379

这些根据自己的需求自定义配置就好了

这样redis就继承好了

SpringMVC中使用redis

创建一个redisCache类

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import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import com.niit.util.ProtoStuffSerializerUtil;
import java.util.List;
import java.util.Set;
 
/**
 * redis缓存
 *
 * @author James
 *
 */
@Component
public class RedisCache {
 
    public final static String CAHCENAME = "niitcache";// 缓存名
    public final static int CAHCETIME = 60;// 默认缓存时间 60S
    public final static int CAHCEHOUR = 60 * 60;// 默认缓存时间 1hr
    public final static int CAHCEDAY = 60 * 60 * 24;// 默认缓存时间 1Day
    public final static int CAHCEWEEK = 60 * 60 * 24 * 7;// 默认缓存时间 1week
    public final static int CAHCEMONTH = 60 * 60 * 24 * 7 * 30;// 默认缓存时间 1month
 
    @Autowired
    private RedisTemplate<String, String> redisTemplate;
    public <T> boolean putCache(String key, T obj) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serialize(obj);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.setNX(bkey, bvalue);
            }
        });
        return result;
    }
 
    public <T> void putCacheWithExpireTime(String key, T obj, final long expireTime) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serialize(obj);
        redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                connection.setEx(bkey, expireTime, bvalue);
                return true;
            }
        });
    }
 
    public <T> boolean putListCache(String key, List<T> objList) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serializeList(objList);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.setNX(bkey, bvalue);
            }
        });
        return result;
    }
 
    public <T> boolean putListCacheWithExpireTime(String key, List<T> objList, final long expireTime) {
        final byte[] bkey = key.getBytes();
        final byte[] bvalue = ProtoStuffSerializerUtil.serializeList(objList);
        boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                connection.setEx(bkey, expireTime, bvalue);
                return true;
            }
        });
        return result;
    }
 
    public <T> T getCache(final String key, Class<T> targetClass) {
        byte[] result = redisTemplate.execute(new RedisCallback<byte[]>() {
            @Override
            public byte[] doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.get(key.getBytes());
            }
        });
        if (result == null) {
            return null;
        }
        return ProtoStuffSerializerUtil.deserialize(result, targetClass);
    }
 
    public <T> List<T> getListCache(final String key, Class<T> targetClass) {
        byte[] result = redisTemplate.execute(new RedisCallback<byte[]>() {
            @Override
            public byte[] doInRedis(RedisConnection connection) throws DataAccessException {
                return connection.get(key.getBytes());
            }
        });
        if (result == null) {
            return null;
        }
        return ProtoStuffSerializerUtil.deserializeList(result, targetClass);
    }
 
    /**
     * 精确删除key
     *
     * @param key
     */
    public void deleteCache(String key) {
        redisTemplate.delete(key);
    }
 
    /**
     * 模糊删除key
     *
     * @param pattern
     */
    public void deleteCacheWithPattern(String pattern) {
        Set<String> keys = redisTemplate.keys(pattern);
        redisTemplate.delete(keys);
    }
 
    /**
     * 清空所有缓存
     */
    public void clearCache() {
        deleteCacheWithPattern(RedisCache.CAHCENAME + "|*");
    }
}

写进和读取redis

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<span style="white-space:pre">  </span>String v = "test";
  cache.putCacheWithExpireTime("key", v, cache.CAHCEHOUR);
  String value = cache.getCache("key", String.class);
  System.out.println(value);

然后集成成功。redis是将数据放进内存里。所以需要考虑做redis服务器时候的内存性能，还有redis的缓存策略等等。

以上为个人经验，希望能给大家一个参考，也希望大家多多支持服务器之家。

原文链接：https://blog.csdn.net/qq_24046745/article/details/52702261

  • redis
  • SpringMVC

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