解析SpringBoot整合SpringDataRedis的过程
作者:kenewstar
Spring-Data-Redis项目(简称SDR)对Redis的Key-Value数据存储操作提供了更高层次的抽象,类似于Spring Framework对JDBC支持一样。
项目主页: http://projects.spring.io/spring-data-redis/
项目文档: http://docs.spring.io/spring-data/redis/docs/1.5.0.RELEASE/reference/html/
本文给大家介绍SpringBoot整合SpringDataRedis的过程。
项目环境:Jdk11.0.2、Redis3.0.0、Centos7
一、安装Redis3.0.0
在Linux下解压redis安装包
进入解压后的目录进行编译
编译完成
将redis安装到指定目录
启动redis
默认端口Port:6379
属于前置启动,会占用整个终端,按Ctrl+C停止
后置启动,将redis.conf复制到redis/bin目录下
修改复制后的配置文件,将no该为yes
Centos7开放端口
启动redis 查看redis是否启动成功
IDEA客户端工具连接redis服务成功
二、整合SpringDataRedis
1.修改pom.xml文件
<?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>org.example</groupId> <artifactId>springboot-redis</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.6.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <!-- SpringDataRedis2.x已不使用jedis 如需要jedis,需手动导入 --> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>3.3.0</version> </dependency> </dependencies> </project>
2.创建RedisConfig配置类
jedis中的源码:
/** * @Author: kenewstar * @Description: Redis配置类 * @Date:Created in 2020/6/27 */ @Configuration public class RedisConfig { //连接池 @Bean public JedisPoolConfig jedisPoolConfig(){ JedisPoolConfig config = new JedisPoolConfig(); //最大空闲数(默认8) config.setMaxIdle(12); //最小空闲数(默认0) config.setMinIdle(6); //最大连接数(默认8) config.setMaxTotal(24); return config; } /** * SpringDataRedis2.x版本已废弃使用jedis * @param config * @return */ @Bean public JedisConnectionFactory jedisConnectionFactory(JedisPoolConfig config){ JedisConnectionFactory factory = new JedisConnectionFactory(); //不推荐使用,SpringDataRedis2.x中已过时 factory.setPoolConfig(config); factory.setHostName("192.168.40.128"); //redis服务的ip factory.setPort(6379); //redis服务的端口 return factory; } //redis操作类 @Bean public RedisTemplate<String,Object> redisTemplate(JedisConnectionFactory factory){ RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>(); redisTemplate.setConnectionFactory(factory); //设置key/value的序列化器 redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setValueSerializer(new StringRedisSerializer()); return redisTemplate; } }
Redis序列化器
3.创建Redis测试类
/** * @Author: kenewstar * @Description: 测试redis操作 * @Date:Created in 2020/6/27 */ @RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest(classes = App.class) public class TestRedisString { @Autowired private RedisTemplate<String,Object> redisTemplate; @Test public void set(){ this.redisTemplate.opsForValue().set("name","muke"); } @Test public void get(){ Object name = this.redisTemplate.opsForValue().get("name"); System.out.println(name); } }
三、SpringDataRedis存取Java对象
不推荐该种方式存取java对象,会造成空间浪费,使用json字符串格式存取会更好
/** * @Author: kenewstar * @Description: 测试redis操作 * @Date:Created in 2020/6/27 */ @RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest(classes = App.class) public class TestRedisString { @Autowired private RedisTemplate<String,Object> redisTemplate; @Test public void setObject(){ User user = new User(); user.setId(1); user.setName("kenewstar"); user.setAge(21); this.redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer()); this.redisTemplate.opsForValue().set("user",user); } @Test public void getObject(){ this.redisTemplate.setValueSerializer(new JdkSerializationRedisSerializer()); User user = (User)this.redisTemplate.opsForValue().get("user"); System.out.println(user); } }
四、SpringDataRedis存取Json格式的Java对象
/** * @Author: kenewstar * @Description: 测试redis操作 * @Date:Created in 2020/6/27 */ @RunWith(SpringJUnit4ClassRunner.class) @SpringBootTest(classes = App.class) public class TestRedisString { @Autowired private RedisTemplate<String,Object> redisTemplate; @Test public void setJsonObject(){ User user = new User(); user.setId(2); user.setName("kenewstar2"); user.setAge(22); this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class)); this.redisTemplate.opsForValue().set("userJson",user); } @Test public void getJsonObject(){ this.redisTemplate.setValueSerializer(new Jackson2JsonRedisSerializer<>(User.class)); User user = (User) this.redisTemplate.opsForValue().get("userJson"); System.out.println(user); } }
五、SpringDataRedis2.x中的配置
1.创建application.yml全局配置文件
将redis数据库连接信息与连接池信息配置在全局配置文件中
#redis单机应用环境配置 spring: redis: host: 192.168.40.128 port: 6379 password: #无密码不配置 database: 0 #数据库索引(0-15)默认为0 timeout: 300s #连接超时时间 #redis连接池配置 jedis: pool: max-idle: 16 #最大空闲数(默认8) min-idle: 4 #最小空闲数(默认0) max-active: 20 #最大连接数(默认8) max-wait: 60000ms # 连接池最大阻塞等待时间 默认-1ms (-1 :表示没有限制) 这里设置1分钟
2.创建RedisConfig配置类
/** * @Author: kenewstar * @Description: Redis配置类 * @Date:Created in 2020/6/27 */ @Configuration public class RedisConfig { @Bean public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory factory){ RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>(); redisTemplate.setConnectionFactory(factory); redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setValueSerializer(new StringRedisSerializer()); return redisTemplate; } }
3.测试SpringDataRedis,代码与上述代码测试代码相同,在这就不给大家重复介绍了。
总结
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