java连接Redis， Maven管理

pom配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>redis</groupId>
    <artifactId>redis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.8.0</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.9</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-pool/commons-pool -->
        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-redis -->
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>2.0.3.RELEASE</version>
        </dependency>
    </dependencies>
</project>

创建db.properties文件

redis.host=bigdata-hpsk01.huadian.com
redis.port=6379
redis.maxIdle=10
redis.minIdle=10
redis.maxTotal=50

书写工具类

package com.huadian.redisUntil;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public final class JedisPoolUntil {
    private static String ADDR = "192.168.59.160";
    //Redis的端口号
    private static int PORT = 6379;


   /* //可用连接实例的最大数目，默认值为8；
     //如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。
    private static int MAX_ACTIVE = 1024;

           //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。
    private static int MAX_IDLE = 200;

           //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException；
    private static int MAX_WAIT = 10000;

    private static int TIMEOUT = 10000;*//*

             //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
    private static boolean TEST_ON_BORROW = true;*/


    private static int MAXTOTAL=20;
    private static int MINIDLE=10;
    private static int MAXIDLE=15;
    private static JedisPool jedisPool = null;
    /**
    * 初始化Redis连接池
     */
    static {
                try {
                    JedisPoolConfig config = new JedisPoolConfig();
                    config.setMaxTotal(MAXTOTAL);
                    config.setMaxIdle(MINIDLE);
                    config.setMinIdle(MAXIDLE);

                    jedisPool = new JedisPool(config, ADDR, PORT);
                    } catch (Exception e) {
                         e.printStackTrace();
                     }
             }


    /**
           * 获取Jedis实例
           * @return
           */
     public synchronized static Jedis getJedis() {
                 try {
                         if (jedisPool != null) {
                                 Jedis resource = jedisPool.getResource();
                                 return resource;
                             } else {
                                 return null;
                            }
                     } catch (Exception e) {
                        e.printStackTrace();
                        return null;
                   }
            }

            /**
       * 释放jedis资源
       * @param jedis
       */
           public static void returnResource(final Jedis jedis) {
                if (jedis != null) {
                         jedisPool.returnResource(jedis);
                    }
            }
}

书写测试类

package com.huadian.jedis;

import com.huadian.redisUntil.JedisPoolUntil;
import org.junit.Test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class JedisDemo {
    private Jedis jedis = null;

    /**
     * 单连接
     */
    @Test
    public void jedisSingleConn(){
        String host = "192.168.59.160";
        int port = 6379;
        Jedis jedis = new Jedis(host, port);
        jedis.set("name","张三");
        jedis.set("age","18");
        String s = jedis.get("name");
        String s1 = jedis.get("age");
        System.out.println(s);
        System.out.println(s1);
    }

    /**
     * 连接池连接
     */
    @Test
    public void jedisPoolConn(){
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        jedisPoolConfig.setMaxTotal(20);
        jedisPoolConfig.setMinIdle(10);
        jedisPoolConfig.setMaxIdle(15);
        JedisPool jedisPool = new JedisPool(jedisPoolConfig, "192.168.59.160", 6379);
        Jedis jedis = jedisPool.getResource();
        //取数据
        String s = jedis.get("name");
        String s1 = jedis.get("age");
        System.out.println(s);
        System.out.println(s1);
    }

    /**
     * 连接池连接
     * 工具类
     */
    @Test
    public void jedisPoolConn1(){
        Jedis jedis1 = JedisPoolUntil.getJedis();
        //取数据
        String s = jedis1.get("name");
        String s1 = jedis1.get("age");
        System.out.println(s);
        System.out.println(s1);
    }

}

double_lifly

发布了105 篇原创文章 · 获赞 536 · 访问量 7万+

私信关注

java连接Redis， Maven管理

猜你喜欢