jedis操作 redis

最新推荐文章于 2025-12-16 17:36:39 发布

原创最新推荐文章于 2025-12-16 17:36:39 发布 · 432 阅读

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本文介绍如何在SpringMVC项目中配置Redis的Jedis连接池，包括Maven依赖、配置文件设置及Spring Bean定义等步骤，并提供了一个简单的测试类示例。

spring mvc 配置 jedis连接池

首先 maven 依赖来一下

        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>

然后配置文件搞一下

#redis缓存配置
redis.host=127.0.0.1
redis.port=6379
redis.timeout=2000
#注意，如果没有password，此处不设置值，但这一项要保留
redis.password=xxx
redis.db.index=1

然后spring 配置个bean

    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="300" /> <!-- 最大能够保持idel状态的对象数  -->
        <property name="maxTotal" value="60000" /> <!-- 最大分配的对象数 -->
        <property name="testOnBorrow" value="true" /> <!-- 当调用borrow Object方法时，是否进行有效性检查 -->
    </bean>

    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg name="poolConfig" ref="jedisPoolConfig" />
        <constructor-arg name="host" value="${redis.host}" />
        <constructor-arg name="port" value="${redis.port}" type="int" />
        <constructor-arg name="timeout" value="${redis.timeout}" type="int" />
        <constructor-arg name="password" value="#{'${redis.password}'!=''?'${redis.password}':null}" />
        <constructor-arg name="database" value="${redis.db.index}" type="int" />
    </bean>

测试类

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:applicationContext.xml","classpath:mybatis-servlet.xml"})
public class JedisTest {

    @Autowired
    JedisPool pool;

    @Test
    public void jedis(){
        try {
            Jedis jedis=pool.getResource();
            Admins admins = new Admins();
            admins.setName("张三");
            admins.setPwd("lisi");
            jedis.set("admin".getBytes(), SerializeUtil.serialize(admins));
            admins =  (Admins)SerializeUtil.deserialize(jedis.get("admin".getBytes()));
            System.err.println(admins.getName());
        } catch (Exception e) {
            System.err.println(e);
        }


    }

}

中间用到了一个帮助类

package com.yc.education.util;

import java.io.*;

public class SerializeUtil {

    /**
     * 反序列化
     * @param bytes
     * @return
     */
    public static Object deserialize(byte[] bytes) {

        Object result = null;

        if (isEmpty(bytes)) {
            return null;
        }

        try {
            ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
            try {
                ObjectInputStream objectInputStream = new ObjectInputStream(byteStream);
                try {
                    result = objectInputStream.readObject();
                }
                catch (ClassNotFoundException ex) {
                    throw new Exception("Failed to deserialize object type", ex);
                }
            }
            catch (Throwable ex) {
                throw new Exception("Failed to deserialize", ex);
            }
        } catch (Exception e) {
        }
        return result;
    }

    public static boolean isEmpty(byte[] data) {
        return (data == null || data.length == 0);
    }

    /**
     * 序列化
     * @param object
     * @return
     */
    public static byte[] serialize(Object object) {

        byte[] result = null;

        if (object == null) {
            return new byte[0];
        }
        try {
            ByteArrayOutputStream byteStream = new ByteArrayOutputStream(128);
            try  {
                if (!(object instanceof Serializable)) {
                    throw new IllegalArgumentException(SerializeUtil.class.getSimpleName() + " requires a Serializable payload " +
                            "but received an object of type [" + object.getClass().getName() + "]");
                }
                ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteStream);
                objectOutputStream.writeObject(object);
                objectOutputStream.flush();
                result =  byteStream.toByteArray();
            }
            catch (Throwable ex) {
                throw new Exception("Failed to serialize", ex);
            }
        } catch (Exception ex) {

        }
        return result;
    }

}

好了代码贴完了