java web项目中Spring整合Redis的使用

一、添加Redis Maven依赖

<!-- redis -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.6.2</version>
</dependency>

<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.7.1.RELEASE</version>
</dependency>

二、config.properties
redis.host=192.168.0.254
redis.port=6379
redis.password=jedis21tb

redis.maxIdle=300
redis.maxWait=1000
redis.testOnBorrow=true
redis.timeout=3000

三、spring配置文件(applicationContext.xml)：
<!--引入配置属性文件 -->
<context:property-placeholder location="classpath:config.properties" />
<!-- redis -->
<!-- jedis 配置 -->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig" >
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxWaitMillis" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean >
<!-- redis服务器中心 -->
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" >
<property name="poolConfig" ref="poolConfig" />
<property name="port" value="${redis.port}" />
<property name="hostName" value="${redis.host}" />
<property name="password" value="${redis.password}" />
<property name="timeout" value="${redis.timeout}" ></property>
</bean >
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" >
<property name="connectionFactory" ref="connectionFactory" />
<property name="keySerializer" >
<bean class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<!-- <property name="valueSerializer" >
<bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property> -->
</bean >

<bean id="redisUtil" class="com.kttx.common.RedisUtil" >
<property name="redisTemplate" ref="redisTemplate" />
</bean >四、java代码
package com.kttx.common;

import java.io.Serializable;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import org.apache.log4j.Logger;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

/**
* redis
* @author txs
*
*/
public class RedisUtil {

private static Logger logger = Logger.getLogger(RedisUtil.class);

private static RedisTemplate<Serializable, Object> redisTemplate;

/**
* 写入或更新缓存
* @param key
* @param value
* @return
*/
public static boolean set(final String key, Object value)
{
boolean result = false;
try {
ValueOperations<Serializable, Object> operations = redisTemplate
.opsForValue();
operations.set(key, value);
result = true;
} catch (Exception e) {
logger.error("write redis is faill");
e.printStackTrace();

}
return result;
}

/**
* 写入缓存
* 设置失效时间
* @param key
* @param value
* @return
*/
public static boolean set(final String key, Object value, Long expireTime) {
boolean result = false;
try {
ValueOperations<Serializable, Object> operations = redisTemplate
.opsForValue();
operations.set(key, value);
redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
/**
* 读取缓存
* @param key
* @return
*/
public static Object get(final String key)
{
Object result = null;
ValueOperations<Serializable, Object> operations = redisTemplate
.opsForValue();
result = operations.get(key);
return result;
}

/**
* 删除对应的value
* @param key
*/
public static void remove(final String key)
{
if (exists(key)) {
redisTemplate.delete(key);
}
}

/**
* 批量删除对应的value
*
* @param keys
*/
public static void remove(final String... keys) {
for (String key : keys) {
remove(key);
}
}

/**
* 批量删除key
*
* @param pattern 正则表达式
*/
public static void removePattern(final String pattern) {
Set<Serializable> keys = redisTemplate.keys(pattern);
if (keys.size() > 0)
redisTemplate.delete(keys);
}

/**
* 判断缓存中是否有对应的value
*
* @param key
* @return
*/
public static boolean exists(final String key) {
return redisTemplate.hasKey(key);
}

public void setRedisTemplate(
RedisTemplate<Serializable, Object> redisTemplate) {
this.redisTemplate = redisTemplate;
}
}
使用：RedisUtil.set(key,value);