SpringDataRedis入门
简介
Redis
redis是一款开源的Key-Value数据库,运行在内存中,由ANSI C编写。企业开发通常采用Redis来实现缓存。同类的产品还有memcache 、memcached 、MongoDB等。
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等等,推荐使用Jedis。
Spring Data Redis
Spring-data-redis是spring大家族的一部分,提供了在srping应用中通过简单的配置访问redis服务,对reids底层开发包(Jedis, JRedis, and RJC)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spring 3.1 cache进行了实现。
spring-data-redis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
ValueOperations:简单K-V操作
SetOperations: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
基本配置
1.pom.xml 基本jar包
<!-- 集中定义依赖版本号 -->
<properties>
<spring.version>4.2.4.RELEASE</spring.version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.9</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>
2.redis配置文件
redis-config.properties
# Redis settings
# server IP
redis.host=127.0.0.1
# server port
redis.port=6379
# server pass
redis.pass=
# use dbIndex
redis.database=0
# \u63A7\u5236\u4E00\u4E2Apool\u6700\u591A\u6709\u591A\u5C11\u4E2A\u72B6\u6001\u4E3Aidle(\u7A7A\u95F2\u7684)\u7684jedis\u5B9E\u4F8B
redis.maxIdle=300
# \u8868\u793A\u5F53borrow(\u5F15\u5165)\u4E00\u4E2Ajedis\u5B9E\u4F8B\u65F6\uFF0C\u6700\u5927\u7684\u7B49\u5F85\u65F6\u95F4\uFF0C\u5982\u679C\u8D85\u8FC7\u7B49\u5F85\u65F6\u95F4(\u6BEB\u79D2)\uFF0C\u5219\u76F4\u63A5\u629B\u51FAJedisConnectionException\uFF1B
redis.maxWait=3000
# \u5728borrow\u4E00\u4E2Ajedis\u5B9E\u4F8B\u65F6\uFF0C\u662F\u5426\u63D0\u524D\u8FDB\u884Cvalidate\u64CD\u4F5C\uFF1B\u5982\u679C\u4E3Atrue\uFF0C\u5219\u5F97\u5230\u7684jedis\u5B9E\u4F8B\u5747\u662F\u53EF\u7528\u7684
redis.testOnBorrow=true
applicationContexxt-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:mvc="http://www.springframework.org/schema/mvc"
xmlns:cache="http://www.springframework.org/schema/cache"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd">
<context:property-placeholder location="classpath*:properties/*.properties" />
<!-- redis 相关配置 jedis配置
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
-->
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxWaitMillis" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>
<!-- jedis连接工厂类 -->
<bean id="JedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
p:host-name="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:pool-config-ref="poolConfig"/>
<!-- SpringDataRedis操作模板 -->
<bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
<property name="connectionFactory" ref="JedisConnectionFactory" />
</bean>
</beans>
数据操作Demo
1. 值类型操作
package com.spring.data.redis.demo;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.ContextHierarchy;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml")
public class DemoValue {
@Autowired
private RedisTemplate redisTemplate;
/**
* 储存value值
*/
@Test
public void setValue() {
redisTemplate.boundValueOps("name").set("wzy");
}
/**
* 输出value值
*/
@Test
public void getValue() {
String str = (String) redisTemplate.boundValueOps("name").get();
System.out.println(str);
}
/**
* 删除value值
*/
@Test
public void deleteValue() {
redisTemplate.delete("name");
}
}
2. Set类型操作
package com.spring.data.redis.demo;
import java.util.Set;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Set类型操作
* @author zy
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml")
public class TestSet {
@Autowired
private RedisTemplate redisTemplate;
/**
* 储存值
*/
@Test
public void setValue() {
redisTemplate.boundSetOps("set").add("孙仲谋");
redisTemplate.boundSetOps("set").add("刘备");
redisTemplate.boundSetOps("set").add("关羽");
redisTemplate.boundSetOps("set").add("张飞");
}
/**
* 输出值
*/
@Test
public void getValue() {
Set set = redisTemplate.boundSetOps("set").members();
System.out.println(set);
}
/**
* 单个删除
*/
@Test
public void removeValue() {
redisTemplate.boundSetOps("set").remove("孙仲谋");
}
/**
* 整体删除
*
*/
@Test
public void deleteValue() {
redisTemplate.delete("set");
}
}
3. List类型操作
package com.spring.data.redis.demo;
import java.util.List;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* List集合操作
* @author zy
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml")
public class TestList {
@Autowired
private RedisTemplate redisTemplate;
/**
* 储存值:右压栈:从栈的右边添加值
*/
@Test
public void setRightValue() {
redisTemplate.boundListOps("list").rightPush("刘备");
redisTemplate.boundListOps("list").rightPush("关羽");
redisTemplate.boundListOps("list").rightPush("张飞");
}
/**
* 储存值:左压栈:从栈的左边添加值
*/
@Test
public void setLeftValue() {
redisTemplate.boundListOps("list").leftPush("中国人");
redisTemplate.boundListOps("list").leftPush("桃园三结义");
}
/**
* 输出值
*
*/
@Test
public void getValue() {
List list = redisTemplate.boundListOps("list").range(0, 10); //第 0 到9的值
System.out.println(list);
}
/**
* 查询集合某个元素
*
*/
@Test
public void testSearchByIndex(){
String index = (String) redisTemplate.boundListOps("list").index(2);//下标为2的值
System.out.println(index);
}
/**
* 移除集合某个元素
*/
@Test
public void removeValue() {
redisTemplate.boundListOps("list").remove(1, "刘备");
// remove(1, "刘备"); 1 : 移除一个刘备(第一个)
}
/**
* 整体删除
*
*/
@Test
public void deleteValue() {
redisTemplate.delete("list");
}
}
4. Hash类型操作
package com.spring.data.redis.demo;
import java.util.List;
import java.util.Set;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Hash类型操作
* @author zy
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/applicationContext-redis.xml")
public class TestHash {
@Autowired
private RedisTemplate redisTemplate;
/**
* 储存值
*
*/
@Test
public void setValue() {
redisTemplate.boundHashOps("map").put("a", "100");
redisTemplate.boundHashOps("map").put("b", "80+");
redisTemplate.boundHashOps("map").put("c", "60+");
redisTemplate.boundHashOps("map").put("d", "60-");
}
/**
* 输出所有Key值
*/
@Test
public void getKeysValue() {
Set key = redisTemplate.boundHashOps("map").keys();
System.out.println(key);
}
/**
* 输出所有value值
*/
@Test
public void getValuesValue() {
List values = redisTemplate.boundHashOps("map").values();
System.out.println(values);
}
/**
* 根据KEY提取值
*/
@Test
public void findValueByKey() {
String value = (String) redisTemplate.boundHashOps("map").get("a");
System.out.println(value);
}
/**
* 根据key移除值
*/
@Test
public void deleteValueByKey() {
redisTemplate.boundHashOps("map").delete("a");
}
/**
* 整体删除
*
*/
@Test
public void deleteValue() {
redisTemplate.delete("map");
}
}