Spring集成redis（SSM框架）
liguangix 2018-12-29
参考：https://blog.csdn.net/weixin_42184707/article/details/80361464
一、本地安装 redis（windows）
1、 下载redis压缩包
下载地址：https://github.com/MicrosoftArchive/redis/tags
2、解压到对应目录：
3、双击redis-server.exe启动redis，双击redis-cli.exe操作redis命令。
启动成功页面如上图，至此redis安装完毕。若不能正确安装还请读者留言咨询。接下来步入正题。
二、jar包引入，配置redis.properties
<!--redis相关 -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.8.6.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
redis.priperties文件内容：
redis.host=127.0.0.1
redis.port=6379
redis.sentinel.port=26879
redis.pwd=
redis.database=0
redis.timeout=1000
redis.userPool=true
redis.pool.maxIdle=100
redis.pool.minIdle=10
redis.pool.maxTotal=200
redis.pool.maxWaitMillis=10000
redis.pool.minEvictableIdleTimeMillis=300000
redis.pool.numTestsPerEvictionRun=10
redis.pool.timeBetweenEvictionRunsMillis=30000
redis.pool.testOnBorrow=true
redis.pool.testOnReturn=true
redis.pool.testWhileIdle=true
三、配置spring-redis.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:redis="http://www.springframework.org/schema/redis" xmlns:cache="http://www.springframework.org/schema/cache"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/redis
http://www.springframework.org/schema/redis/spring-redis.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd
">
<context:property-placeholder order="1" location="classpath:redis.properties" ignore-unresolvable="true"/>
<!-- Redis -->
<!-- 连接池参数 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.pool.maxIdle}" />
<property name="minIdle" value="${redis.pool.minIdle}" />
<property name="maxTotal" value="${redis.pool.maxTotal}" />
<property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}" />
<property name="minEvictableIdleTimeMillis" value="${redis.pool.minEvictableIdleTimeMillis}"></property>
<property name="numTestsPerEvictionRun" value="${redis.pool.numTestsPerEvictionRun}"></property>
<property name="timeBetweenEvictionRunsMillis" value="${redis.pool.timeBetweenEvictionRunsMillis}"></property>
<property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
<property name="testOnReturn" value="${redis.pool.testOnReturn}" />
<property name="testWhileIdle" value="${redis.pool.testWhileIdle}"></property>
</bean>
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="poolConfig" ref="jedisPoolConfig" />
<property name="hostName" value="${redis.host}" />
<property name="port" value="${redis.port}" />
<property name="password" value="${redis.pwd}" />
<property name="usePool" value="${redis.userPool} " />
<property name="database" value="${redis.database}" />
<property name="timeout" value="${redis.timeout}" />
</bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="jedisConnectionFactory" />
<!-- 序列化方式 建议key/hashKey采用StringRedisSerializer -->
<property name="keySerializer">
<bean
class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="valueSerializer">
<bean
class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property>
<property name="hashKeySerializer">
<bean
class="org.springframework.data.redis.serializer.StringRedisSerializer" />
</property>
<property name="hashValueSerializer">
<bean
class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
</property>
<!-- 开启REIDS事务支持 -->
<property name="enableTransactionSupport" value="false" />
</bean>
<!-- 对string操作的封装 -->
<bean id="stringRedisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
<constructor-arg ref="jedisConnectionFactory" />
<!-- 开启REIDS事务支持 -->
<property name="enableTransactionSupport" value="false" />
</bean>
</beans>
四、在applactionContext.xml引入spring-redis.xml
<import resource="classpath:spring/spring-redis.xml" />
五、封装redis操作工具类（类中注释解释很详细）
这里封装的方法包括对String、list 、set、obj、map等的操作 。
package com.test.util;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
/**
* redis工具类
*
*/
@SuppressWarnings("unchecked")
public class CacheUtil {
private static final Logger LOG = LoggerFactory.getLogger(CacheUtil.class);
private static RedisTemplate<String, Object> redisTemplate = CacheContextUtil.getBean("redisTemplate", RedisTemplate.class);
private static StringRedisTemplate stringRedisTemplate = CacheContextUtil.getBean("stringRedisTemplate", StringRedisTemplate.class);
private static String CACHE_PREFIX;
private static boolean CACHE_CLOSED;
private CacheUtil() {
}
@SuppressWarnings("rawtypes")
private static boolean isEmpty(Object obj) {
if (obj == null) {
return true;
}
if (obj instanceof String) {
String str = obj.toString();
if ("".equals(str.trim())) {
return true;
}
return false;
}
if (obj instanceof List) {
List<Object> list = (List<Object>) obj;
if (list.isEmpty()) {
return true;
}
return false;
}
if (obj instanceof Map) {
Map map = (Map) obj;
if (map.isEmpty()) {
return true;
}
return false;
}
if (obj instanceof Set) {
Set set = (Set) obj;
if (set.isEmpty()) {
return true;
}
return false;
}
if (obj instanceof Object[]) {
Object[] objs = (Object[]) obj;
if (objs.length <= 0) {
return true;
}
return false;
}
return false;
}
/**
* 构建缓存key值
* @param key缓存key
* @return
*/
private static String buildKey(String key) {
if (CACHE_PREFIX == null || "".equals(CACHE_PREFIX)) {
return key;
}
return CACHE_PREFIX + ":" + key;
}
/**
* 返回缓存的前缀
* @return CACHE_PREFIX_FLAG
*/
public static String getCachePrefix() {
return CACHE_PREFIX;
}
/**
* 设置缓存的前缀
* @param cachePrefix
*/
public static void setCachePrefix(String cachePrefix) {
if (cachePrefix != null && !"".equals(cachePrefix.trim())) {
CACHE_PREFIX = cachePrefix.trim();
}
}
/**
* 关闭缓存
* @returntrue:成功
* false:失败
*/
public static boolean close() {
LOG.debug(" cache closed ! ");
CACHE_CLOSED = true;
return true;
}
/**
* 打开缓存
* @returntrue:存在
* false:不存在
*/
public static boolean openCache() {
CACHE_CLOSED = false;
return true;
}
/**
* 检查缓存是否开启
* @returntrue:已关闭
* false:已开启
*/
public static boolean isClose() {
return CACHE_CLOSED;
}
/**
* 判断key值是否存在
* @param key缓存的key
* @returntrue:存在
* false:不存在
*/
public static boolean hasKey(String key) {
LOG.debug(" hasKey key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return false;
}
key = buildKey(key);
return redisTemplate.hasKey(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 匹配符合正则的key
* @param patternKey
* @return key的集合
*/
public static Set<String> keys(String patternKey) {
LOG.debug(" keys key :{}", patternKey);
try {
if (isClose() || isEmpty(patternKey)) {
return Collections.emptySet();
}
return redisTemplate.keys(patternKey);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return Collections.emptySet();
}
/**
* 根据key删除缓存
* @param key
* @returntrue:成功
* false:失败
*/
public static boolean del(String... key) {
LOG.debug(" delete key :{}", key.toString());
try {
if (isClose() || isEmpty(key)) {
return false;
}
Set<String> keySet = new HashSet<>();
for (String str : key) {
keySet.add(buildKey(str));
}
redisTemplate.delete(keySet);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 根据key删除缓存
* @param key
* @returntrue:成功
* false:失败
*/
public static boolean delPattern(String key) {
LOG.debug(" delete Pattern keys :{}", key);
try {
if (isClose() || isEmpty(key)) {
return false;
}
key = buildKey(key);
redisTemplate.delete(redisTemplate.keys(key));
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 删除一组key值
* @param keys
* @returntrue:成功
* false:失败
*/
public static boolean del(Set<String> keys) {
LOG.debug(" delete keys :{}", keys.toString());
try {
if (isClose() || isEmpty(keys)) {
return false;
}
Set<String> keySet = new HashSet<>();
for (String str : keys) {
keySet.add(buildKey(str));
}
redisTemplate.delete(keySet);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 设置过期时间
* @param key缓存key
* @param seconds过期秒数
* @returntrue:成功
* false:失败
*/
public static boolean setExp(String key, long seconds) {
LOG.debug(" setExp key :{}, seconds: {}", key, seconds);
try {
if (isClose() || isEmpty(key) || seconds > 0) {
return false;
}
key = buildKey(key);
return redisTemplate.expire(key, seconds, TimeUnit.SECONDS);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 查询过期时间
* @param key缓存key
* @return秒数
*/
public static Long getExpire(String key) {
LOG.debug(" getExpire key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return 0L;
}
key = buildKey(key);
return redisTemplate.getExpire(key, TimeUnit.SECONDS);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return 0L;
}
/**
* 缓存存入key-value
* @param key缓存键
* @param value缓存值
* @returntrue:成功
* false:失败
*/
public static boolean setString(String key, String value) {
LOG.debug(" setString key :{}, value: {}", key, value);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
stringRedisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 缓存存入key-value
* @param key缓存键
* @param value缓存值
* @param seconds秒数
* @returntrue:成功
* false:失败
*/
public static boolean setString(String key, String value, long seconds) {
LOG.debug(" setString key :{}, value: {}, timeout:{}", key, value, seconds);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
stringRedisTemplate.opsForValue().set(key, value, seconds, TimeUnit.SECONDS);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 根据key取出String value
* @param key缓存key值
* @returnString缓存的String
*/
public static String getString(String key) {
LOG.debug(" getString key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return stringRedisTemplate.opsForValue().get(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 去的缓存中的最大值并+1
* @param key缓存key值
* @returnlong缓存中的最大值+1
*/
public static long incr(String key) {
LOG.debug(" incr key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return 0;
}
key = buildKey(key);
return redisTemplate.opsForValue().increment(key, 1);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return 0;
}
/**
* 缓存中存入序列化的Object对象
* @param <T>
* @param key缓存key
* @param obj存入的序列化对象
* @returntrue:成功
* false:失败
*/
public static boolean set(String key, Object obj) {
LOG.debug(" set key :{}, value:{}", key, obj);
try {
if (isClose() || isEmpty(key) || isEmpty(obj)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForValue().set(key, obj);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 缓存中存入序列化的Object对象
* @param <T>
* @param key缓存key
* @param obj存入的序列化对象
* @returntrue:成功
* false:失败
*/
public static boolean setObj(String key, Object obj, long seconds) {
LOG.debug(" set key :{}, value:{}, seconds:{}", key, obj, seconds);
try {
if (isClose() || isEmpty(key) || isEmpty(obj)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForValue().set(key, obj);
if (seconds > 0) {
redisTemplate.expire(key, seconds, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 取出缓存中存储的序列化对象
* @param key缓存key
* @param clazz对象类
* @return <T>序列化对象
*/
public static <T> T getObj(String key, Class<T> clazz) {
LOG.debug(" get key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return (T) redisTemplate.opsForValue().get(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 存入Map数组
* @param <T>
* @param key缓存key
* @param map缓存map
* @returntrue:成功
* false:失败
*/
public static <T> boolean setMap(String key, Map<String, T> map) {
try {
if (isClose() || isEmpty(key) || isEmpty(map)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 取出缓存的map
* @param key缓存key
* @return map缓存的map
*/
@SuppressWarnings("rawtypes")
public static Map getMap(String key) {
LOG.debug(" getMap key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return redisTemplate.opsForHash().entries(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 查询缓存的map的集合大小
* @param key缓存key
* @return int缓存map的集合大小
*/
public static long getMapSize(String key) {
LOG.debug(" getMap key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return 0;
}
key = buildKey(key);
return redisTemplate.opsForHash().size(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return 0;
}
/**
* 根据key以及hashKey取出对应的Object对象
* @param key缓存key
* @param hashKey对应map的key
* @return objectmap中的对象
*/
public static Object getMapKey(String key, String hashKey) {
LOG.debug(" getMapkey :{}, hashKey:{}", key, hashKey);
try {
if (isClose() || isEmpty(key) || isEmpty(hashKey)) {
return null;
}
key = buildKey(key);
return redisTemplate.opsForHash().get(key, hashKey);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 取出缓存中map的所有key值
* @param key缓存key
* @return Set<String> map的key值合集
*/
public static Set<Object> getMapKeys(String key) {
LOG.debug(" getMapKeys key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return redisTemplate.opsForHash().keys(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 删除map中指定的key值
* @param key缓存key
* @param hashKeymap中指定的hashKey
* @returntrue:成功
* false:失败
*/
public static boolean delMapKey(String key, String hashKey) {
LOG.debug(" delMapKey key :{}, hashKey:{}", key, hashKey);
try {
if (isClose() || isEmpty(key) || isEmpty(hashKey)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForHash().delete(key, hashKey);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 存入Map数组
* @param <T>
* @param key缓存key
* @param map缓存map
* @param seconds秒数
* @returntrue:成功
* false:失败
*/
public static <T> boolean setMapExp(String key, Map<String, T> map, long seconds) {
LOG.debug(" setMapExp key :{}, value: {}, seconds:{}", key, map, seconds);
try {
if (isClose() || isEmpty(key) || isEmpty(map)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForHash().putAll(key, map);
redisTemplate.expire(key, seconds, TimeUnit.SECONDS);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* map中加入新的key
* @param <T>
* @param key缓存key
* @param hashKeymap的Key值
* @param valuemap的value值
* @returntrue:成功
* false:失败
*/
public static <T> boolean addMap(String key, String hashKey, T value) {
LOG.debug(" addMap key :{}, hashKey: {}, value:{}", key, hashKey, value);
try {
if (isClose() || isEmpty(key) || isEmpty(hashKey) || isEmpty(value)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForHash().put(key, hashKey, value);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 缓存存入List
* @param <T>
* @param key缓存key
* @param list缓存List
* @returntrue:成功
* false:失败
*/
public static <T> boolean setList(String key, List<T> list) {
LOG.debug(" setList key :{}, list: {}", key, list);
try {
if (isClose() || isEmpty(key) || isEmpty(list)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForList().leftPushAll(key, list.toArray());
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 根据key值取出对应的list合集
* @param key缓存key
* @return List<Object> 缓存中对应的list合集
*/
public static <V> List<V> getList(String key) {
LOG.debug(" getList key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return (List<V>) redisTemplate.opsForList().range(key, 0, -1);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 根据key值截取对应的list合集
* @param key缓存key
* @param start开始位置
* @param end结束位置
* @return
*/
public static void trimList(String key, int start, int end) {
LOG.debug(" trimList key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return;
}
key = buildKey(key);
redisTemplate.opsForList().trim(key, start, end);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
}
/**
* 取出list合集中指定位置的对象
* @param key缓存key
* @param index索引位置
* @return Objectlist指定索引位置的对象
*/
public static Object getIndexList(String key, int index) {
LOG.debug(" getIndexList key :{}, index:{}", key, index);
try {
if (isClose() || isEmpty(key) || index < 0) {
return null;
}
key = buildKey(key);
return redisTemplate.opsForList().index(key, index);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* Object存入List
* @param <T>
* @param key缓存key
* @param valueList中的值
* @returntrue:成功
* false:失败
*/
public static boolean addList(String key, Object value) {
LOG.debug(" addList key :{}, value:{}", key, value);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForList().leftPush(key, value);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 缓存存入List
* @param <T>
* @param key缓存key
* @param list缓存List
* @param seconds秒数
* @returntrue:成功
* false:失败
*/
public static <T> boolean setList(String key, List<T> list, long seconds) {
LOG.debug(" setList key :{}, value:{}, seconds:{}", key, list, seconds);
try {
if (isClose() || isEmpty(key) || isEmpty(list)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForList().leftPushAll(key, list.toArray());
if (seconds > 0) {
redisTemplate.expire(key, seconds, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* set集合存入缓存
* @param <T>
* @param key缓存key
* @param set缓存set集合
* @returntrue:成功
* false:失败
*/
public static <T> boolean setSet(String key, Set<T> set) {
LOG.debug(" setSet key :{}, value:{}", key, set);
try {
if (isClose() || isEmpty(key) || isEmpty(set)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForSet().add(key, set.toArray());
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* set集合中增加value
* @param <T>
* @param key缓存key
* @param value增加的value
* @returntrue:成功
* false:失败
*/
public static boolean addSet(String key, Object value) {
LOG.debug(" addSet key :{}, value:{}", key, value);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForSet().add(key, value);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* set集合存入缓存
* @param <T>
* @param key缓存key
* @param set缓存set集合
* @param seconds秒数
* @returntrue:成功
* false:失败
*/
public static <T> boolean setSet(String key, Set<T> set, long seconds) {
LOG.debug(" setSet key :{}, value:{}, seconds:{}", key, set, seconds);
try {
if (isClose() || isEmpty(key) || isEmpty(set)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForSet().add(key, set.toArray());
if (seconds > 0) {
redisTemplate.expire(key, seconds, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 取出缓存中对应的set合集
* @param <T>
* @param key缓存key
* @return Set<Object> 缓存中的set合集
*/
public static <T> Set<T> getSet(String key) {
LOG.debug(" getSet key :{}", key);
try {
if (isClose() || isEmpty(key)) {
return null;
}
key = buildKey(key);
return (Set<T>) redisTemplate.opsForSet().members(key);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return null;
}
/**
* 有序集合存入数值
* @param key缓存key
* @param value缓存value
* @param score评分
* @return
*/
public static boolean addZSet(String key, Object value, double score) {
LOG.debug(" addZSet key :{},value:{}, score:{}", key, value, score);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
return redisTemplate.opsForZSet().add(key, value, score);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 从有序集合中删除指定值
* @param key缓存key
* @param value缓存value
* @return
*/
public static boolean removeZSet(String key, Object value) {
LOG.debug(" removeZSet key :{},value:{}", key, value);
try {
if (isClose() || isEmpty(key) || isEmpty(value)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForZSet().remove(key, value);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 从有序集合中删除指定位置的值
* @param key缓存key
* @param start起始位置
* @param end结束为止
* @return
*/
public static boolean removeZSet(String key, long start, long end) {
LOG.debug(" removeZSet key :{},start:{}, end:{}", key, start, end);
try {
if (isClose() || isEmpty(key)) {
return false;
}
key = buildKey(key);
redisTemplate.opsForZSet().removeRange(key, start, end);
return true;
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return false;
}
/**
* 从有序集合中获取指定位置的值
* @param key缓存key
* @param start起始位置
* @param end结束为止
* @return
*/
public static <T> Set<T> getZSet(String key, long start, long end) {
LOG.debug(" getZSet key :{},start:{}, end:{}", key, start, end);
try {
if (isClose() || isEmpty(key)) {
return Collections.emptySet();
}
key = buildKey(key);
return (Set<T>) redisTemplate.opsForZSet().range(key, start, end);
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
return Collections.emptySet();
}
}
package com.test.util;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
/**
* Context 工具类
*/
@SuppressWarnings("static-access")
@Component
public class CacheContextUtil implements ApplicationContextAware {
private static ApplicationContext commonApplicationContext;
@Override
public void setApplicationContext(ApplicationContext context) throws BeansException {
this.commonApplicationContext = context;
}
/**
* 根据提供的bean名称得到相应的服务类
* @param beanId bean的id
* @return 返回bean的实例对象
*/
public static Object getBean(String beanId) {
return commonApplicationContext.getBean(beanId);
}
/**
* 根据提供的bean名称得到对应于指定类型的服务类
* @param beanId bean的id
* @param clazz bean的类类型
* @return 返回的bean类型,若类型不匹配,将抛出异常
*/
public static <T> T getBean(String beanId, Class<T> clazz) {
return commonApplicationContext.getBean(beanId, clazz);
}
}
六 、测试代码
@RequestMapping("redis")
public String redisTest() {
try {
boolean b = CacheUtil.setString("123", "redis");//向redis里存字符串 key-value
System.out.println(b);//true成功，
System.out.println(CacheUtil.getString("123"));//从radis里取数据 key
} catch (Exception e) {
e.printStackTrace();
return null;
}
return "hello";
}
访问这个地址请求时，用到了我们封装的工具类，用缓存操作string的存取。测试结果如下图
根据测试可知，Spring集成redis成功。
