一、概述
redis,键值存储系统,面试中常问到的是redis数据结构,在公司中还能使用redis的主键生成uuid,其他的我也不知道了,因为还轮不到我做系统。
二、配置使用
1.添加依赖
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.5.2.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
2.配置applicationContext-Redis.xml,并把文件添加到web.xml启动项中
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:amq="http://activemq.apache.org/schema/core"
xmlns:jms="http://www.springframework.org/schema/jms"
xmlns:mvc="http://www.alibaba.com/schema/stat"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://activemq.apache.org/schema/core
http://activemq.apache.org/schema/core/activemq-core-5.7.0.xsd
http://www.alibaba.com/schema/stat http://www.alibaba.com/schema/stat.xsd
http://www.springframework.org/schema/jms
http://www.springframework.org/schema/jms/spring-jms-4.1.xsd ">
<context:annotation-config />
<!-- scanner redis properties -->
<context:property-placeholder location="classpath:redis.properties" ignore-unresolvable="true"/>
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="minIdle" value="${redis.minIdle}" />
<property name="maxTotal" value="${redis.maxTotal}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>
<bean id="redisConnectionFactory" 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.StringRedisTemplate">
<property name="connectionFactory" ref="redisConnectionFactory" />
</bean>
</beans>
redis.properties
# Redis settings
redis.host=localhost
redis.port=6379
redis.pass=
redis.maxIdle=600
redis.minIdle=300
redis.maxTotal=1000
redis.testOnBorrow=true
3.直接使用spring data redis 中封装的方法进行操作
package com.web.test.controller;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
@RestController
public class TestController {
@Resource(name="redisTemplate")
private RedisTemplate<String,String> redisTemplate;
@RequestMapping("/redisTest")
public String redisTest(){
return redisTemplate.opsForValue().get("username");
}
}
-end-