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简介

• Spring Cache是一个框架，实现了基于注解的缓存功能
• 底层可以使用EHCache、Caffeine、Redis实现缓存。

注解一般放在Controller的方法上，@CachePut 注解一般有两个参数，第一个时存储的名称，第二个时名称后边的key，使用SpEL动态的计算key。其余的注解也都是这两个参数。在用户端的查询操作需要使用@Cacheable，服务器端的增删改都使用@CacheEvict

引入依赖

SpringCache
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-cache</artifactId>
</dependency>Redis
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>mysql
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope>
</dependency>mybatis
<dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.2.0</version>
</dependency>

常用注解

application.yml

server:port: 8888
spring:datasource:druid:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/test?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=trueusername: rootpassword: rootredis:host: localhostport: 6379password: 123456database: 1
# 日志
logging:level:com:itheima:mapper: debugservice: infocontroller: info

使用

1. 启动类添加注解

package com.itheima;import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;@Slf4j
@SpringBootApplication
-----------------------------------------
添加下面的注解
@EnableCaching
-----------------------------------------
public class CacheDemoApplication {public static void main(String[] args) {SpringApplication.run(CacheDemoApplication.class,args);log.info("项目启动成功...");}
}

使用方法上添加注解