【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

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

<?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

<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

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

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

package com.fudabdlwj.redisclient;

import org.springframework.stereotype.Service;

@Service("redisService")
public class RedisService extends AbstractRedisService<String, String> {

}

8、测试

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。