java连接redis
简单连接
1、创建Java Project项目
- 添加JUnit测试环境：项目名--右键--Build Path--Add Library--JUnit--Next--Finish
- 在项目名下添加lib文件夹
2、添加jar包
- jedis的jar包：jedis.jar
- jedis连接池的jar包：commons-pool.jar
3、创建测试类JedisClientTest.java
import org.junit.jupiter.api.Test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
public class JedisClientTest {
@Test
public void jedisClient() {
// 声明Jedis对象，通过该对象连接到redis服务器
Jedis jedis = new Jedis("127.0.0.1",6379);
// 设置密码
// jedis.auth("root");
// 通过jedis赋值
jedis.set("strTest","2222");
// 通过redis取值
String res = jedis.get("strTest");
System.out.println(res);
jedis.close();
}
// 使用jedis连接池连接jedis服务器
@Test
public void jedisPool() {
// 创建Jedis连接池
JedisPool jedisPool = new JedisPool("127.0.0.1",6379);
// 通过jedis连接池获取jedis对象
Jedis jedis = jedisPool.getResource();
// 设置值
jedis.set("pooltest","sdsff");
// 取值
String res = jedis.get("pooltest");
System.out.println(res);
// 关闭jedis
jedis.close();
// 关闭连接池：注意关闭连接池要在所有jedis都关闭之后载关闭
jedisPool.close();
}
}
Spring 连接Jedis
1、创建Java Project项目
- 添加JUnit测试环境：项目名--右键--Build Path--Add Library--JUnit--Next--Finish
- 在项目名下添加lib文件夹
2、添加jar包
aopalliance.jar
aspectjweaver.jar
cglib-nodep-2.2.jar
commons-collections-3.1.jar
commons-dbcp-1.2.2.jar
commons-logging.jar
commons-pool.jar
commons-pool2-2.3.jar
fastjson-1.1.28.jar
jackson-core-asl-1.9.7.jar
jackson-mapper-asl-1.9.7.jar
jedis-2.7.0.jar
jstl.jar
spring-aop-3.2.8.RELEASE.jar
spring-aspects-3.2.8.RELEASE.jar
spring-beans-3.2.8.RELEASE.jar
spring-context-3.2.8.RELEASE.jar
spring-core-3.2.8.RELEASE.jar
spring-expression-3.2.8.RELEASE.jar
spring-jdbc-3.2.8.RELEASE.jar
spring-tx-3.2.8.RELEASE.jar
spring-web-3.2.8.RELEASE.jar
spring-webmvc-3.2.8.RELEASE.jar
standard.jar
3、创建applicationContext.xml配置文件
-
其中包含以下内容：
- 创建redis的连接池，配置其参数
- 通过连接池获得连接池对象
-
具体配置如下:
<?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:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd ">
<!-- 创建redis的连接池，配置其参数 -->
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<!-- 最大连接数 -->
<property name="maxTotal" value="30" />
<!-- 最大空闲连接数 -->
<property name="maxIdle" value="10" />
<!-- 每次释放连接的最大数目 -->
<property name="numTestsPerEvictionRun" value="1024" />
<!-- 释放连接的扫描间隔（毫秒） -->
<property name="timeBetweenEvictionRunsMillis" value="30000" />
<!-- 连接最小空闲时间 -->
<property name="minEvictableIdleTimeMillis" value="1800000" />
<!-- 连接空闲多久后释放, 当空闲时间>该值 且 空闲连接>最大空闲连接数 时直接释放 -->
<property name="softMinEvictableIdleTimeMillis" value="10000" />
<!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 -->
<property name="maxWaitMillis" value="1500" />
<!-- 在获取连接的时候检查有效性, 默认false -->
<property name="testOnBorrow" value="false" />
<!-- 在空闲时检查有效性, 默认false -->
<property name="testWhileIdle" value="true" />
<!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true -->
<property name="blockWhenExhausted" value="false" />
</bean>
<!-- 通过连接池获得连接池对象 -->
<bean id="jedisPool" class="redis.clients.jedis.JedisPool" destroy-method="close">
<constructor-arg name="poolConfig" ref="jedisPoolConfig"/>
<constructor-arg name="host" value="127.0.0.1"/>
<constructor-arg name="port" value="6379"/>
</bean>
</beans>
4、创建测试文件SpringJedisClientTest.java
- SpringJedisClientTest.java代码如下：
import org.junit.jupiter.api.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
/**
* 使用spring配置redis
* @author Rainy
*/
public class SpringJedisClientTest {
@Test
public void springJedisPool() {
// 加载注配置文件
@SuppressWarnings("resource")
ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
// 实例化jedisPool
JedisPool jedisPool = (JedisPool) ac.getBean("jedisPool");
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.set("jedistest","张三");
String res = jedis.get("jedistest");
System.out.println(res);
}catch (Exception e) {
e.printStackTrace();
}finally {
if(jedis != null) {
jedis.close();
}
}
}
}
- 运行结果如下：
一月 06, 2019 10:48:28 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@7ce6a65d: startup date [Sun Jan 06 22:48:28 CST 2019]; root of context hierarchy
一月 06, 2019 10:48:28 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [applicationContext.xml]
一月 06, 2019 10:48:28 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@b62fe6d: defining beans [jedisPoolConfig,jedisPool]; root of factory hierarchy
张三
