Jedis
Jedis是Redis官方推出的一款面向java的客户端,提供了很多接口供java语言调用,可以在Redis官网下载,当然还有一些开源爱好者提供的客户端,如Jredis SRP等,推荐使用JRedis.
SpringDataRedis
SpringDataRedis是spring大家族中的一部分,提供了在spring应用中通过简单的配置访问redis服务,对redis底层开发包(Jedis,JRedis,andRJC)进行了高度封装,RedisTemplate提供了redis各种操作,异常处理及序列化,支持发布订阅,并对Spring3.1cache进行了实现.
SpringDataRedis针对Jedis提供了如下功能:
1.连接池自动管理,提供了一个高度封装的RedisTemplate类
2.针对Jedis客户端中大量api进行了归类封装,将同一类型操作封装为operation接口
ValueIoerations:简单K-V操作
SetIOperations:set类型数据操作.
ZSetOperations:zset类型数据操作
HashOperations:针对map类型的数据操作
ListOperations:针对list类型的数据操作.
SpringDataRedis入门小Demo
构建Maven工程 SpringDataRedisDemo jar工程
引入Spring相关依赖、引入JUnit依赖 (内容参加其它工程)
引入Jedis和SpringDataRedis依赖
<!-- Spring -->
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<!\-\- 缓存 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.8.1</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<!\-\- java编译插件 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
</plugins>
</build>
在src/main/resources下创建properties文件夹,建立redis-config.properties
redis.host=127.0.0.1 redis.port=6379 redis.pass= redis.database=0 redis.maxIdle=300 redis.maxWait=3000 redis.testOnBorrow=true
在src/main/resources下创建spring文件夹 ,创建applicationContext-redis.xml
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="classpath:properties/.properties" />
<!-- redis 相关配置 -->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxWaitMillis" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>
<bean id="JedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" p:host-name="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:pool-config-ref="poolConfig"/>
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="JedisConnectionFactory" />
</bean>
</beans>
maxIdle :最大空闲数
maxWaitMillis:连接时的最大等待毫秒数
testOnBorrow:在提取一个jedis实例时,是否提前进行验证操作;如果为true,则得到的jedis实例均是可用的;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml") public class TestValue {
@Autowired private RedisTemplate redisTemplate;
@Test public void setValue(){
redisTemplate.boundValueOps("name").set("qingmu");
}
@Test public void getValue(){
String str = (String) redisTemplate.boundValueOps("name").get();
System.out.println(str);
}
@Test public void deleteValue(){
redisTemplate.delete("name");;
}
}
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml") public class TestSet {
@Autowired private RedisTemplate redisTemplate; /** \* 存入值 */ @Test public void setValue(){
redisTemplate.boundSetOps("nameset").add("曹操");
redisTemplate.boundSetOps("nameset").add("刘备");
redisTemplate.boundSetOps("nameset").add("孙权");
} /** \* 提取值 */ @Test public void getValue(){
Set members = redisTemplate.boundSetOps("nameset").members();
System.out.println(members);
} /** \* 删除集合中的某一个值 */ @Test public void deleteValue(){
redisTemplate.boundSetOps("nameset").remove("孙权");
} /** \* 删除整个集合 */ @Test public void deleteAllValue(){
redisTemplate.delete("nameset");
}
}
创建测试类TestList
(1)右压栈
/* * 右压栈:后添加的对象排在后边 / @Test public void testSetValue1(){
redisTemplate.boundListOps("namelist1").rightPush("刘备");
redisTemplate.boundListOps("namelist1").rightPush("关羽");
redisTemplate.boundListOps("namelist1").rightPush("张飞");
} /** \* 显示右压栈集合 */ @Test public void testGetValue1(){
List list = redisTemplate.boundListOps("namelist1").range(0, 10);
System.out.println(list);
}
运行结果:
[刘备, 关羽, 张飞]
(2)左压栈
/** \* 左压栈:后添加的对象排在前边 */ @Test public void testSetValue2(){
redisTemplate.boundListOps("namelist2").leftPush("刘备");
redisTemplate.boundListOps("namelist2").leftPush("关羽");
redisTemplate.boundListOps("namelist2").leftPush("张飞");
} /** \* 显示左压栈集合 */ @Test public void testGetValue2(){
List list = redisTemplate.boundListOps("namelist2").range(0, 10);
System.out.println(list);
}
运行结果:
[张飞, 关羽, 刘备]
(3)根据索引查询元素
/** \* 查询集合某个元素 */ @Test public void testSearchByIndex(){
String s = (String) redisTemplate.boundListOps("namelist1").index(1);
System.out.println(s);
}
(4)移除某个元素的值
/** \* 移除集合某个元素 */ @Test public void testRemoveByIndex(){
redisTemplate.boundListOps("namelist1").remove(1, "关羽");
}
创建测试类TestHash
(1)存入值
@Test public void testSetValue(){
redisTemplate.boundHashOps("namehash").put("a", "唐僧");
redisTemplate.boundHashOps("namehash").put("b", "悟空");
redisTemplate.boundHashOps("namehash").put("c", "八戒");
redisTemplate.boundHashOps("namehash").put("d", "沙僧");
}
2)提取所有的KEY
@Test public void testGetKeys(){
Set s = redisTemplate.boundHashOps("namehash").keys();
System.out.println(s);
}
运行结果:
[a, b, c, d]
(3)提取所有的值
@Test public void testGetValues(){
List values = redisTemplate.boundHashOps("namehash").values();
System.out.println(values);
}
运行结果:
[唐僧, 悟空, 八戒, 沙僧]
(4)根据KEY提取值
@Test public void testGetValueByKey(){
Object object = redisTemplate.boundHashOps("namehash").get("b");
System.out.println(object);
}
运行结果:
悟空
(5)根据KEY移除值
@Test public void testRemoveValueByKey(){
redisTemplate.boundHashOps("namehash").delete("c");
}
运行后再次查看集合内容:
[唐僧, 悟空, 沙僧]
@Test
publicvoid testGetValues(){
List values = redisTemplate.boundHashOps("namehash").values();
System.out.println(values);
}
Original url: Access
Created at: 2020-01-19 18:33:44
Category: default
Tags: none
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