Spring集成redis(SSM框架)
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>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-redis</artifactId>
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<version>1.8.6.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>redis.clients</groupId>
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<artifactId>jedis</artifactId>
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<version>2.9.0</version>
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</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"
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xmlns:redis="http://www.springframework.org/schema/redis" xmlns:cache="http://www.springframework.org/schema/cache"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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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"/>
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<!-- Redis -->
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<!-- 连接池参数 -->
-
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
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<property name="maxIdle" value="${redis.pool.maxIdle}" />
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<property name="minIdle" value="${redis.pool.minIdle}" />
-
<property name="maxTotal" value="${redis.pool.maxTotal}" />
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<property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}" />
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<property name="minEvictableIdleTimeMillis" value="${redis.pool.minEvictableIdleTimeMillis}"></property>
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<property name="numTestsPerEvictionRun" value="${redis.pool.numTestsPerEvictionRun}"></property>
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<property name="timeBetweenEvictionRunsMillis" value="${redis.pool.timeBetweenEvictionRunsMillis}"></property>
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<property name="testOnBorrow" value="${redis.pool.testOnBorrow}" />
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<property name="testOnReturn" value="${redis.pool.testOnReturn}" />
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<property name="testWhileIdle" value="${redis.pool.testWhileIdle}"></property>
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</bean>
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<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
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<property name="poolConfig" ref="jedisPoolConfig" />
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<property name="hostName" value="${redis.host}" />
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<property name="port" value="${redis.port}" />
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<property name="password" value="${redis.pwd}" />
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<property name="usePool" value="${redis.userPool} " />
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<property name="database" value="${redis.database}" />
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<property name="timeout" value="${redis.timeout}" />
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</bean>
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<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
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<property name="connectionFactory" ref="jedisConnectionFactory" />
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<!-- 序列化方式 建议key/hashKey采用StringRedisSerializer -->
-
<property name="keySerializer">
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<bean
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class="org.springframework.data.redis.serializer.StringRedisSerializer" />
-
</property>
-
<property name="valueSerializer">
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<bean
-
class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
-
</property>
-
<property name="hashKeySerializer">
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<bean
-
class="org.springframework.data.redis.serializer.StringRedisSerializer" />
-
</property>
-
<property name="hashValueSerializer">
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<bean
-
class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" />
-
</property>
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<!-- 开启REIDS事务支持 -->
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<property name="enableTransactionSupport" value="false" />
-
</bean>
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<!-- 对string操作的封装 -->
-
<bean id="stringRedisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
-
<constructor-arg ref="jedisConnectionFactory" />
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<!-- 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;
-
}
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/**
-
* 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) {
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if (cachePrefix != null && !"".equals(cachePrefix.trim())) {
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CACHE_PREFIX = cachePrefix.trim();
-
}
-
}
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/**
-
* 关闭缓存
-
* @return true:成功
-
* false:失败
-
*/
-
public static boolean close() {
-
LOG.debug(" cache closed ! ");
-
CACHE_CLOSED = true;
-
return true;
-
}
-
/**
-
* 打开缓存
-
* @return true:存在
-
* false:不存在
-
*/
-
public static boolean openCache() {
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CACHE_CLOSED = false;
-
return true;
-
}
-
/**
-
* 检查缓存是否开启
-
* @return true:已关闭
-
* false:已开启
-
*/
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public static boolean isClose() {
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return CACHE_CLOSED;
-
}
-
/**
-
* 判断key值是否存在
-
* @param key 缓存的key
-
* @return true: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;
-
}
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/**
-
* 匹配符合正则的key
-
* @param patternKey
-
* @return key的集合
-
*/
-
public static Set<String> keys(String patternKey) {
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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
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return String 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
-
* @return long 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
-
* @return true: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
-
* @return true: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
-
* @return true: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 object map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 hashKey map中指定的hashKey
-
* @return true: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
-
* @return true: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 hashKey map的Key值
-
* @param value map的value值
-
* @return true: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
-
* @return true: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 Object list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 value List中的值
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return true: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
-
* @return true: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。
如有不足之处,欢迎各位读者博友留言评论!
--------------------- 本文来自 zhao_pq 的**** 博客 ,全文地址请点击:https://blog.****.net/weixin_42184707/article/details/80361464?utm_source=copy