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>

来源：https://blog.csdn.net/qq_41934990/article/details/81612180