一.Spring Boot 2.0 Redis整合环境准备
- idea（或者你自己喜欢的IDE工具）
- maven3（idea已集成其他IDE工具自行根据情况处理）
- Redis服务（我这里下载的Windows版本测试用）
二.Spring Boot 2.0 Redis整合项目创建
这里创建的是一个基于最新Spring Boot 2.0.3的项目。然后添加了web、cache、spring data redis等模块，具体的依赖如下：
<?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>com.example</groupId>
<artifactId>demo-springboot2-redis</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo-springboot2-redis</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<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>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
首先在spring boot 2.0的application.properties配置文件中配置Redis基础信息
######################Redis 配置 开始################################
# Redis数据库分片索引（默认为0）
spring.redis.database=0
# Redis服务器地址
spring.redis.host=localhost
# Redis服务器连接端口
spring.redis.port=6379
# Redis服务器连接密码（默认为空）
spring.redis.password=
######################Redis 结束################################
在Spring Boot 2.0的启动类上添加启用缓存的注解@EnableCaching，添加后如下：
package com.example.demospringboot2redis;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
@SpringBootApplication
@EnableCaching
public class DemoSpringboot2RedisApplication {
public static void main(String[] args) {
SpringApplication.run(DemoSpringboot2RedisApplication.class, args);
}
}
一个入门的spring boot 2.0 Redis整合已经完成，是不是特别简单。接下来将写一个服务用来证明缓存已经启用
package com.example.demospringboot2redis.service;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
@Service
public class CacheTestService {
final static Log log = LogFactory.getLog(CacheTestService.class);
@Cacheable(value = "getData")
public String getData() {
System.out.println("=====看见这句话，表示你没有读取缓存数据====");
return "当前系统时间搓" + System.currentTimeMillis();
}
}
注意方法上的@Cacheable注解，只有添加该注解才能算用了缓存。接下来写个单元测试，如下
package com.example.demospringboot2redis;
import com.example.demospringboot2redis.service.CacheTestService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoSpringboot2RedisApplicationTests {
@Autowired
CacheTestService cacheTestService;
@Test
public void cacheTest() {
for (int i=0;i<5;i++){
System.out.println(cacheTestService.getData());
try{
Thread.sleep(1000);
}catch (Exception e){
e.printStackTrace();
}
}
}
}
单元测试很简单，就是循环几次去取刚才服务中的方法值,运行单元测试结果如下:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.0.3.RELEASE)
2018-06-26 09:48:25.058 INFO 2196 --- [ main] e.d.DemoSpringboot2RedisApplicationTests : Starting DemoSpringboot2RedisApplicationTests on DESKTOP-3EO1H6P with PID 2196 (started by xq in D:\workplace\idea\spring-security-oauth-master\demo-springboot2-redis)
2018-06-26 09:48:25.059 INFO 2196 --- [ main] e.d.DemoSpringboot2RedisApplicationTests : No active profile set, falling back to default profiles: default
2018-06-26 09:48:25.097 INFO 2196 --- [ main] o.s.w.c.s.GenericWebApplicationContext : Refreshing org.springframework.web.context.support.GenericWebApplicationContext@4fcee388: startup date [Tue Jun 26 09:48:25 CST 2018]; root of context hierarchy
2018-06-26 09:48:25.745 INFO 2196 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!
2018-06-26 09:48:26.618 INFO 2196 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-26 09:48:26.964 INFO 2196 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.web.context.support.GenericWebApplicationContext@4fcee388: startup date [Tue Jun 26 09:48:25 CST 2018]; root of context hierarchy
2018-06-26 09:48:27.126 INFO 2196 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-06-26 09:48:27.128 INFO 2196 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-06-26 09:48:27.166 INFO 2196 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-26 09:48:27.166 INFO 2196 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-26 09:48:27.917 INFO 2196 --- [ main] e.d.DemoSpringboot2RedisApplicationTests : Started DemoSpringboot2RedisApplicationTests in 3.186 seconds (JVM running for 4.513)
2018-06-26 09:48:28.140 INFO 2196 --- [ main] io.lettuce.core.EpollProvider : Starting without optional epoll library
2018-06-26 09:48:28.142 INFO 2196 --- [ main] io.lettuce.core.KqueueProvider : Starting without optional kqueue library
=====看见这句话，表示你没有读取缓存数据====
当前系统时间搓1529977708399
当前系统时间搓1529977708399
当前系统时间搓1529977708399
当前系统时间搓1529977708399
当前系统时间搓1529977708399
2018-06-26 09:48:33.442 INFO 2196 --- [ Thread-2] o.s.w.c.s.GenericWebApplicationContext : Closing org.springframework.web.context.support.GenericWebApplicationContext@4fcee388: startup date [Tue Jun 26 09:48:25 CST 2018]; root of context hierarchy
Disconnected from the target VM, address: '127.0.0.1:60134', transport: 'socket'
Process finished with exit code 0注意后面的日志,我们可以发现进入方法只有一次。说明spring boot 2.0 redis已经完美整合
通过上面的整合，我们不难发现spring boot 2.0配置越来越简单了。但是某些情况我们还是需要一些定制化的Redis整合配置，将会在后续发表spring boot 2.0 Redis自定义配置的整合
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