Java中的使用及连接Redis数据库(附源码)

引言：

本文主要分享了Redis如何在IDEA中部署，运行；模拟加入Redis的操作；

目录结构

1. 在IDEA中搭建Redis

1.1 创建项目

新建含有web的SpringBoot项目；

搭建项目参考：SpringBoot超详细笔记：https://blog.csdn.net/weixin_42601136/article/details/108396511

1.2 添加依赖（不够手动添加）

<dependencies>
  <!--  1、 Jedis-->
  <dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>2.9.0</version>
  </dependency>
  <!--  2、 Junit测试-->
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
  </dependency>

  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.2</version>
  </dependency>

  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <scope>runtime</scope>
  </dependency>
  <dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <optional>true</optional>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>
</dependencies>

1.3 测试环境是否搭建成功

@Test
  public void test0() {
    //连接Redis
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    //获取kak
    String kaka = jedis.get("kak");
    log.info(kaka);
    //创建datex
    String datex = jedis.set("datex", new Date().toString());
    //获取datex
    String datex1 = jedis.get("datex");
    log.info(datex1);
    //关闭资源
    jedis.close();
  }

1.4 利用json存储数据

@Test
  public void test1() {
    JedisPool pool = new JedisPool("127.0.0.1", 6379);
    Jedis jedis = pool.getResource();
    Student student = new Student(1001, "kak", "man", "20");
    String key = "student";
    String field = "1001";
    String s = JsonUtils.objectToJson(student);
    String value = s;
    jedis.hset(key, field, value);
    String hget = jedis.hget(key, field);
    log.info(hget);
    jedis.close();
  }

1.5 以byte的形式存储对象

@Test
  public void test02() {
    //连接redis
    Jedis jedis = new Jedis("127.0.0.1", 6379);
    String key = "Student";
    Student value = new Student(1002, "taotao", "woman", "20");
    //将key和value转换为byte[]
    byte[] byteKey = SerializationUtils.serialize(key);
    byte[] byteValue = SerializationUtils.serialize(value);
    //将key和value存储到redis中
    jedis.set(byteKey, byteValue);
    //获取value值
    byte[] bytes = jedis.get(byteKey);
    //bytes反序列化为Student对象
    Student stu = (Student) SerializationUtils.deserialize(bytes);
    System.out.println(stu);
    jedis.close();

  }

1.6 加入连接池的操作

使用连接池操作，可以避免频繁的创建和销毁连接对象的消耗资源

@Test
  public void test3(){
    //创建连接池
    GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
    poolConfig.setMaxTotal(100);//连接池中的最大活跃数
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