【Redis基础】SSH 中Spring-data-redis使用体验

1、项目中导入所需3个jar包



commons-pool-2.2.jar
jedis-2.3.1.jar
spring-data-redis-1.3.4.relese.jar
2、新建redis配置文件redis.properties内容为

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redis.host=127.0.0.1 #ip

redis.port=6379 #端口

redis.default.db=0

redis.timeout=100000

redis.maxActive=300

redis.maxIdle=100

redis.maxWait=1000

redis.testOnBorrow=true

3、新建spring配置redis的文件redis.xml，内容为

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<?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"

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-4.0.xsd">

<!-- 加载Reids属性配置文件 -->

<context:property-placeholder

location="classpath:redis.properties" />

<bean id="propertyConfigurerRedis"

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<property name="order" value="1" />

<property name="ignoreUnresolvablePlaceholders" value="true" />

<property name="systemPropertiesMode" value="1" />

<property name="searchSystemEnvironment" value="true" />

<property name="locations">

<list>

<value>classpath:redis.properties</value>

</list>

</property>

</bean>

<!-- jedis pool配置 -->

<bean id="jedisPoolConfig"

class="redis.clients.jedis.JedisPoolConfig">

<property name="maxIdle" value="${redis.maxIdle}" />

<property name="testOnBorrow" value="${redis.testOnBorrow}" />

</bean>

<!-- spring data redis -->

<bean id="jedisConnectionFactory"

class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">

<property name="usePool" value="true"></property>

<property name="hostName" value="${redis.host}" />

<property name="port" value="${redis.port}" />

<property name="timeout" value="${redis.timeout}" />

<property name="database" value="${redis.default.db}"></property>

<constructor-arg index="0" ref="jedisPoolConfig" />

</bean>

<bean id="redisTemplate"

class="org.springframework.data.redis.core.StringRedisTemplate"

p:connectionFactory-ref="jedisConnectionFactory"

p:keySerializer-ref="stringRedisSerializer">

</bean>

<!--这个主要是解决用cmd查看数据时为了显示正常-->

<bean id="stringRedisSerializer"

class="org.springframework.data.redis.serializer.StringRedisSerializer" />

<!--配置一个基础类（之后的业务类继承于该类）、将redisTemplate注入 -->

<bean id="redisBase" abstract="true">

<property name="template" ref="redisTemplate"/>

</bean>

<!-- 自动扫描 ： 加载构建bean，以便通过注解方式注册bean -->

<context:component-scan base-package="com.fudabdlwj.redisclient" />

</beans>

4、web配置文件中添加reids配置

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<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>

classpath:applicationContext.xml,

classpath:cxfservice.xml

classpath:redis.xml

</param-value>

</context-param>

5、编写接口，测试例子是网上找到的，做些点修改

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package com.fudabdlwj.redisclient;

public interface IRedisService<K, V> {

public void set(K key, V value, long expiredTime);

public V get(K key);

public void del(K key);

public Boolean check(K key,V value);

}

6、抽象类

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package com.fudabdlwj.redisclient;

import java.util.concurrent.TimeUnit;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.redis.core.BoundValueOperations;

import org.springframework.data.redis.core.RedisTemplate;

public abstract class AbstractRedisService<K, V> implements IRedisService<K, V> {

@Autowired

private RedisTemplate<K, V> redisTemplate;

public RedisTemplate<K, V> getRedisTemplate() {

return redisTemplate;

}

public void setRedisTemplate(RedisTemplate<K, V> redisTemplate) {

this.redisTemplate = redisTemplate;

}

@Override

public void set(final K key, final V value, final long expiredTime) {

BoundValueOperations<K, V> valueOper = redisTemplate.boundValueOps(key);

if (expiredTime <= 0) {

valueOper.set(value);

} else {

valueOper.set(value, expiredTime, TimeUnit.MILLISECONDS);

}

}

@Override

public V get(final K key) {

BoundValueOperations<K, V> valueOper = redisTemplate.boundValueOps(key);

return valueOper.get();

}

@Override

public void del(K key) {

if (redisTemplate.hasKey(key)) {

redisTemplate.delete(key);

}

}

@Override

public Boolean check(K key,V value){

Boolean flag=false;

if (redisTemplate.hasKey(key)) {

if(value.equals(get(key))){

flag=true;

}

}

return flag;

}

}

7、实现类

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package com.fudabdlwj.redisclient;

import org.springframework.stereotype.Service;

@Service("redisService")

public class RedisService extends AbstractRedisService<String, String> {

}

8、测试

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public static void main(String[] args) {

@SuppressWarnings("resource")

ApplicationContext factory=new ClassPathXmlApplicationContext("classpath:redis.xml");

RedisService rs= (RedisService) factory.getBean("redisService");

if(rs!=null){

System.out.println("RedisService : "+rs);

if(rs.check("lwj", "123456")){ //</span><span style="font-family: 微软雅黑;">lwj</span><span style="font-family: 微软雅黑;">已事先写进redis的数据</span><span style="font-family:微软雅黑;">

</span><span style="font-family:微软雅黑;"> System.out.println("redis has contianed </span><span style="font-family: 微软雅黑;">lwj 123456</span><span style="font-family: 微软雅黑;">");</span><span style="font-family:微软雅黑;">

System.out.println("add one new key-value : lwj 1234567 expire 15000");

rs.set("lwj", "123456", 15000);

}else{

System.out.println("add one new key-value : lwj 123456 expire 15000");

rs.set("lwj", "1234567", 15000);

}

String value=rs.get("lwj");

System.out.println(value);

}

结果

RedisService : com.fudabdlwj.redisclient.RedisService@2dafcbf

redis has contianed lwj

add one new key-value : lwj 1234567 expire 15000

1234567
通过redis-cli.exe查看对应数据写入成功，15000时间到达时lwj被清除。