使用java连接Redis,Maven管理操作

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);
 }
}

补充知识：JAVA使用Redis所需的MAVEN的POM文件

redis不仅可以通过命令行进行操作，同时redis也可以通过javaAPI进行操作,这是操作redis所需的依赖

<dependencies>
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.testng</groupId>
      <artifactId>testng</artifactId>
      <version>6.14.3</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.0</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
          <!--  <verbal>true</verbal>-->
        </configuration>
      </plugin>
    </plugins>
  </build>

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