SpringBoot下使用cache启动器
1.依赖导入
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--添加缓存启动器-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!--添加redis启动器-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2.service开发
添加@Cacheable("getAdd")
@Service
public class DemoServiceImpl2 implements DemoService {
@Override
@Cacheable("getAdd")
public Integer add(Integer a, Integer b) {
//模拟从数据库中进行查询，时间延迟5秒
try {
Thread.currentThread().sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return a+b;
}
}
3.controller开发
@RestController
public class DemoController {
@Autowired
private DemoService demoServiceImpl2;
@GetMapping("/demo2/{a}/{b}")
public Integer m2(@PathVariable("a") Integer a, @PathVariable("b") Integer b){
return demoServiceImpl2.add(a,b);
}
}
4.主配置类上加注解
添加@EnableCaching
@SpringBootApplication
@EnableCaching
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
6.配置redis
spring.redis.host=172.16.2.134
spring.redis.port=6379
spring.redis.password=123456
spring.redis.database=1
5.结果
将结果存入缓存，自动加入到redis中 第二次访问可以直接从缓存中获取
6.自定义内存中数据key
@Cacheable()
cacheNames 表示存放包名key 设置key名称
@Cacheable(cacheNames = "getAdd",key = "#root.args[0]+#root.args[1]")显示结果： Spring缓存注解@Cacheable
