1、安装Redis
我们在VMware中安装CentOS 64位系统后,在用户目录下下载安装Redis。
wget http://download.redis.io/releases/redis-stable.tar.gz tar -xzvf redis-stable.tar.gz cd redis-stable make PREFIX=/usr/local/redis01 install cd /usr/local/redis01/bin
加上`&`号使redis以后台程序方式运行
./redis-server &
或者也可以到 redis-stable/src目录下进行启动。
检测后台进程是否存在
ps -ef |grep redis
检测6379端口是否在监听
netstat -lntp | grep 6379
或者我们可以直接到redis-stable目录下修改配置文redis.conf,找到如下配置:
daemonize yes # When running daemonized, Redis writes a pid file in /var/run/redis.pid by # default. You can specify a custom pid file location here. pidfile "/var/run/redis/redis01.pid" # Accept connections on the specified port, default is 6379. # If port 0 is specified Redis will not listen on a TCP socket. port 7001
将daemonize值改为yes,修改进行pid的存在路径,然后重新指定一下port端口。
最后我们设置一下redis的log日志存放的地方,如果没有redis目录,需要切换到路径下进行新建。
logfile "/var/log/redis/redis01.log"
修改配置文件后我们需要指定使用哪个配置文件启动Redis
./redis-server ../redis.conf
用`redis-cli`客户端检测连接是否正常
./redis-cli 127.0.0.1:6379> keys * (empty list or set) 127.0.0.1:6379> set key "hello world" OK
我们可以在Windows下直接下载一个RedisClient直接连接VMware中安装的Redis即可。如下图。
如果连接不上,需要关闭一下防火墙,使用
iptables -F
来禁用linux的防火墙或者使用:
vi /etc/selinux/config
然后把修改 SELINUX=enforcing的值为disabled
Spring Boot集成Redis
在mazhi工程下新建Maven Module,名称为mazhi-redis,然后在 pom.xml文件中添加redis的包引用和spring boot的包引用,如下:
<!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId>org.mazhi</groupId> <artifactId>mazhi-core</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- redius --> <dependency> <groupId>org.springframework.session</groupId> <artifactId>spring-session-data-redis</artifactId> <version>1.0.0.RELEASE</version> </dependency> </dependencies>
然后引入application.yml文件,指定端口为8081。并且在src/java/main的org.mazhi.redis目录下新建Application.java文件,内容如下:
@SpringBootApplication public class Application { public static void main(String[] args) throws Exception { SpringApplication.run(Application.class, args); } }
下面就来为系统配置Redis了,在org.mazhi.redis.config目录下新建RedisCacheConfig.java文件,内容如下:
@Configuration @PropertySource(value = "classpath:/redis.properties") @EnableCaching public class RedisCacheConfig extends CachingConfigurerSupport { @Value("${spring.redis.host}") private String host; @Value("${spring.redis.port}") private int port; @Value("${spring.redis.timeout}") private int timeout; @Bean public KeyGenerator wiselyKeyGenerator(){ return new KeyGenerator() { public Object generate(Object target, Method method, Object... params) { StringBuilder sb = new StringBuilder(); sb.append(target.getClass().getName()); sb.append(method.getName()); for (Object obj : params) { sb.append(obj.toString()); } return sb.toString(); } }; } @Bean public JedisConnectionFactory redisConnectionFactory() { JedisConnectionFactory factory = new JedisConnectionFactory(); factory.setHostName(host); factory.setPort(port); factory.setTimeout(timeout); //设置连接超时时间 return factory; } @Bean public CacheManager cacheManager(RedisTemplate redisTemplate) { RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate); // Number of seconds before expiration. Defaults to unlimited (0) cacheManager.setDefaultExpiration(10); //设置key-value超时时间 return cacheManager; } @Bean public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) { StringRedisTemplate template = new StringRedisTemplate(factory); setSerializer(template); //设置序列化工具,这样ReportBean不需要实现Serializable接口 template.afterPropertiesSet(); return template; } private void setSerializer(StringRedisTemplate template) { Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class); ObjectMapper om = new ObjectMapper(); om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jackson2JsonRedisSerializer.setObjectMapper(om); template.setValueSerializer(jackson2JsonRedisSerializer); } }
然后新建redis.properties配置文件,内容如下:
spring.redis.database=0 spring.redis.host=192.168.2.129 # Login password of the redis server. spring.redis.password= spring.redis.pool.max-active=8 spring.redis.pool.max-idle=8 spring.redis.pool.max-wait=-1 spring.redis.pool.min-idle=0 spring.redis.port=7001 # Name of Redis server. spring.redis.sentinel.master= # Comma-separated list of host:port pairs. spring.redis.sentinel.nodes= spring.redis.timeout=0
注意指定spring.redis.host和spring.redis.port为你的redis配置。
在org.mazhi.redis.web目录下新建RedisTestCtrl.java,对Redis进行简单的CRUD操作,如下:
@RestController @RequestMapping(value = "/redis") public class RedisTestCtrl { @Autowired private StringRedisTemplate redisTemplate; @RequestMapping(value = "/addKey") public void addKey() { redisTemplate.execute(new RedisCallback<Object>() { public Object doInRedis(RedisConnection connection) throws DataAccessException { connection.set( // 插入键为test,值为hello的键值对 redisTemplate.getStringSerializer().serialize("test"), redisTemplate.getStringSerializer().serialize("hello") ); return null; } }); } @RequestMapping(value = "/deleteKey") public void deleteKey() { redisTemplate.delete("test"); // 删除数据库中键为test的键值对 } }
这样在浏览器中访问一下:
http://localhost:8081/redis/addKey
执行添加的url后,可以在RedisClient中查看,如下:
然后执行:
http://localhost:8081/redis/delete
查看RedisClient,键值被删除。