使用SpringData更加方便我们对关系型数据库和非关系型数据库更好的操作,封装了通用的代码,使得操作更加快捷简单。
一、Spring Data Redis的配置
引入相关jar包,注意依赖和冲突问题。
maven 引入pom.xml:
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.12version>
dependency>
<dependency>
<groupId>org.springframework.datagroupId>
<artifactId>spring-data-redisartifactId>
<version>1.7.4.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>4.2.8.RELEASEversion>
dependency>
<dependency>
<groupId>redis.clientsgroupId>
<artifactId>jedisartifactId>
<version>2.9.0version>
dependency>
dependencies>
手动添加jar包 相关jar下载地址
配置文件
可以使用引入外部文件的方式也可以通过在xml文件中配置的方式
单节点配置方式
properties文件
#JedisPoolConfig的参数
#最大连接数
redis.pool.maxTotal=30
#最大空闲时间
redis.pool.maxIdle=10
#每次最大连接数
redis.pool.numTestsPerEvictionRun=1024
#释放扫描的扫描间隔
redis.pool.timeBetweenEvictionRunsMillis=30000
#连接的最小空闲时间
redis.pool.minEvictableIdleTimeMillis=1800000
#连接控歘按时间多久后释放,当空闲时间>该值且空闲连接>最大空闲连接数时直接释放
redis.pool.softMinEvictableIdleTimeMillis=10000
#获得链接时的最大等待毫秒数,小于0:阻塞不确定时间,默认-1
redis.pool.maxWaitMillis=1500
#在获得链接的时候检查有效性,默认false
redis.pool.testOnBorrow=true
#在空闲时检查有效性,默认false
redis.pool.testWhileIdle=true
#连接耗尽时是否阻塞,false报异常,true阻塞超时,默认true
redis.pool.blockWhenExhausted=false
#JedisConnectionFactory的参数
#主机地址,默认:localhost
redis.hostName=192.168.200.128
#主机端口,默认:6379
redis.port=6379
#超时时间,默认:2000
redis.timeout=3000
#密码
#redis.password
#是否使用连接池,默认true
redis.usePool=true
#使用数据库的索引,0-15之间的数字,默认:0
redis.dbIndex=0
#是否使用数据类型的转换,默认:true
#redis.convertPipelineAndTxResults
#哨兵配置
#redis.sentinelConfig
#集群配置
#redis.clusterConfig
xml配置文件
<beans xmlns="http://www.springframework.org/schema/beans"
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">
<bean id="placeholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="1"/>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
<property name="locations">
<list>
<value>classpath:redis.propertiesvalue>
list>
property>
bean>
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxTotal" value="${redis.pool.maxTotal}"/>
<property name="maxIdle" value="${redis.pool.maxIdle}"/>
<property name="numTestsPerEvictionRun" value="${redis.pool.numTestsPerEvictionRun}"/>
<property name="timeBetweenEvictionRunsMillis" value="${redis.pool.timeBetweenEvictionRunsMillis}"/>
<property name="minEvictableIdleTimeMillis" value="${redis.pool.minEvictableIdleTimeMillis}"/>
<property name="softMinEvictableIdleTimeMillis" value="${redis.pool.softMinEvictableIdleTimeMillis}"/>
<property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}"/>
<property name="testOnBorrow" value="${redis.pool.testOnBorrow}"/>
<property name="testWhileIdle" value="${redis.pool.testWhileIdle}"/>
<property name="blockWhenExhausted" value="${redis.pool.blockWhenExhausted}"/>
bean>
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<property name="hostName" value="${redis.hostName}"/>
<property name="port" value="${redis.port}"/>
<property name="timeout" value="${redis.timeout}"/>
<property name="database" value="${redis.dbIndex}"/>
<property name="usePool" value="${redis.usePool}"/>
<property name="poolConfig" ref="jedisPoolConfig"/>
bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="jedisConnectionFactory"/>
bean>
beans>
集群配置方式
properties文件
#JedisPoolConfig的参数
#最大连接数
redis.pool.maxTotal=30
#最大空闲时间
redis.pool.maxIdle=10
#每次最大连接数
redis.pool.numTestsPerEvictionRun=1024
#释放扫描的扫描间隔
redis.pool.timeBetweenEvictionRunsMillis=30000
#连接的最小空闲时间
redis.pool.minEvictableIdleTimeMillis=1800000
#连接控歘按时间多久后释放,当空闲时间>该值且空闲连接>最大空闲连接数时直接释放
redis.pool.softMinEvictableIdleTimeMillis=10000
#获得链接时的最大等待毫秒数,小于0:阻塞不确定时间,默认-1
redis.pool.maxWaitMillis=1500
#在获得链接的时候检查有效性,默认false
redis.pool.testOnBorrow=true
#在空闲时检查有效性,默认false
redis.pool.testWhileIdle=true
#连接耗尽时是否阻塞,false报异常,true阻塞超时,默认true
redis.pool.blockWhenExhausted=false
#RedisClusterConfiguration配置
redis.maxRedirects=5
#主机和端口号
redis.host1=192.168.200.128
redis.port1=7000
redis.host2=192.168.200.128
redis.port2=7001
redis.host3=192.168.200.128
redis.port3=7002
redis.host4=192.168.200.128
redis.port4=7003
redis.host5=192.168.200.128
redis.port5=7004
redis.host6=192.168.200.128
redis.port6=7005
xml配置文件
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="placeholderConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="order" value="1"/>
<property name="ignoreUnresolvablePlaceholders" value="true"/>
<property name="locations">
<list>
<value>classpath:redis-cluster.propertiesvalue>
list>
property>
bean>
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxTotal" value="${redis.pool.maxTotal}"/>
<property name="maxIdle" value="${redis.pool.maxIdle}"/>
<property name="numTestsPerEvictionRun" value="${redis.pool.numTestsPerEvictionRun}"/>
<property name="timeBetweenEvictionRunsMillis" value="${redis.pool.timeBetweenEvictionRunsMillis}"/>
<property name="minEvictableIdleTimeMillis" value="${redis.pool.minEvictableIdleTimeMillis}"/>
<property name="softMinEvictableIdleTimeMillis" value="${redis.pool.softMinEvictableIdleTimeMillis}"/>
<property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}"/>
<property name="testOnBorrow" value="${redis.pool.testOnBorrow}"/>
<property name="testWhileIdle" value="${redis.pool.testWhileIdle}"/>
<property name="blockWhenExhausted" value="${redis.pool.blockWhenExhausted}"/>
bean>
<bean id="redisClusterConfiguration" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
<property name="maxRedirects" value="${redis.maxRedirects}">property>
<property name="clusterNodes">
<set>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host1}"/>
<constructor-arg name="port" value="${redis.port1}"/>
bean>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host2}"/>
<constructor-arg name="port" value="${redis.port2}"/>
bean>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host3}"/>
<constructor-arg name="port" value="${redis.port3}"/>
bean>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host4}"/>
<constructor-arg name="port" value="${redis.port4}"/>
bean>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host5}"/>
<constructor-arg name="port" value="${redis.port5}"/>
bean>
<bean class="org.springframework.data.redis.connection.RedisNode">
<constructor-arg name="host" value="${redis.host6}"/>
<constructor-arg name="port" value="${redis.port6}"/>
bean>
set>
property>
bean>
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
<constructor-arg name="poolConfig" ref="jedisPoolConfig"/>
<constructor-arg name="clusterConfig" ref="redisClusterConfiguration"/>
bean>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="jedisConnectionFactory"/>
bean>
beans>
二、RedisTemplate的用法
Operations
opsForXXX和boundXXXOps的区别?
XXX为Value的类型,前者获取一个operator,但是没有指定操作的对象(key),可以在一个连接(事务)内操作多个key以及对应的value;后者获取了一个指定的对象(key)的operator,在一个连接(事务)内只能操作这个对应的key。
关于计数API(increment)中有个小问题需要注意,通过increment计数后,通过get方式获取计数值的时候可能会抛出EOF异常(和本地的jdk以及redis的编译版本有关),可以考虑使用boundValueOps(key).get(0,-1)获得计数值。
ValueOperations和BoundValueOperations
ValueOperations operations = redisTemplate.opsForValue();
String key = "XXX";
BoundValueOperations boundValueOperations = redisTemplate.boundValueOps(key);
类:ValueOperations可以理解为:Map
简单示例:
ValueOperations operations = redisTemplate.opsForValue();
String key = "name";
//存入key-value
operations.set("name","zhangsan");
//根据key取出Value
Object name = operations.get("name");
System.out.println("name:"+name);
//追加
operations.append("name","is man");
//获得并修改
operations.getAndSet("name","zhangsan-1");
Object name1 = operations.get("name");
System.out.println("修改后:"+name1);
String key = "name-1";
BoundValueOperations boundValueOperations = redisTemplate.boundValueOps(key);
//和ValueOperations类似
ListOperations 和 BoundListOperations
ListOperations listOperations = redisTemplate.opsForList();
String key = "springData";
BoundListOperations boundListOperations = redisTemplate.boundListOps(key);
类:ListOperations可以理解为:List
简单示例:
ListOperations listOperations = redisTemplate.opsForList();
//push键值对
listOperations.leftPush(key,"aaa");
listOperations.leftPush(key,"bbb");
listOperations.index(1,1000);
//pop值
Object leftPop = listOperations.leftPop(key);
System.out.println(leftPop);
listOperations.set(key,100,"测试数据");
//ListOperations可以设置泛型
ListOperations listOperations1 = redisTemplate.opsForList();
String key = "springData";
BoundListOperations boundListOperations = redisTemplate.boundListOps(key);
//和ListOperations类似
SetOperations 和 BoundSetOperations
SetOperations setOperations = redisTemplate.opsForSet();
String key = "springData";
BoundSetOperations boundSetOperations = redisTemplate.boundSetOps(key);
类:SetOperations可以理解为:Set
简单示例和解释:
/**
* Set集合,类似于
*
* Map
@Test
public void test04(){
SetOperations setOperations = redisTemplate.opsForSet();
/**
* 添加,类似于
*
* Map> map = new HashMap>();
* Set set = new HashSet();
* map.put(key,set);
* Set set = map.get(key);
* set.add(value);
*/
setOperations.add("springData","redis");
//获取
Set springData = setOperations.members("springData");
//获取两个key的value(Set)交集
setOperations.intersect("springData","SpringData1");
//获取两个key的value(Set)补集
setOperations.difference("springData","SpringData1");
//获取两个key的value(Set)并集
setOperations.union("springData","SpringData1");
String key = "springData";
BoundSetOperations boundSetOperations = redisTemplate.boundSetOps(key);
//和SetOperations操作类似
}
ZSetOperations 和 BoundZSetOperations
ZSetOperations zSetOperations = redisTemplate.opsForZSet();
String key = "springData";
BoundZSetOperations boundZSetOperations = redisTemplate.boundZSetOps(key);
类:SetOperations可以理解为:Set
BoundSetOperations可以理解为,预先设置好了Key,可以对此key进行其他操作,如设置value,修改value,获得value等
HashOperations 和 BoundHashOperations
HashOperations hashOperations = redisTemplate.opsForHash();
String key = "springData";
BoundHashOperations boundHashOperations = redisTemplate.boundHashOps(key);