Spring-data-redis集成redis的方法
Spring-data-redis是spring大家族的一部分,提供了在srping应用中通过简单的配置访问redis服务,对reids底层开发包(Jedis, JRedis, and RJC)进行了高度封装。
一、安装redis服务
1、下载安装redis服务,安装完成后会自动启动redis服务sudo apt-get install redis-server2、下载完成后,我们可以通过命令检查redis服务进程ps -aux|grep redis结果如下图所示:
3、也可以检查Redis服务的状态netstat -nlt|grep 6379#结果如下:# tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN4、通过命令检查redis服务状态sudo /etc/init.d/redis-server status# 结果如下:redis-server is running二、配置redis# 编辑redis配置文件sudo vim /etc/redis/redis.conf# 在vim中设置redis访问密码requirepass 123456# 在vim中注释bind,设置允许远程访问,redis默认只允许本机访问#bind 127.0.0.1# 重启redis服务sudo /etc/init.d/redis-server restart# 客户端访问redis服务sudo redis-cli# 客户端登录并访问redis服务sudo redis-cli -a youpassword# 远程客户端登录并访问redis服务sudo redis-cli -a youpassword -h 192.168.1.22三、编写java代码
1、cache接口定义public interface Cache {/*** 添加* @param key* @param value*/void put(Object key, Object value);/*** 得到key的值* @param key* @return*/Object get(Object key);/*** 移除key* @param key* @return*/Object remove(Object key);}2、cache接口实现import org.springframework.dao.DataAccessException;import org.springframework.data.redis.connection.RedisConnection;import org.springframework.data.redis.connection.RedisListCommands;import org.springframework.data.redis.connection.RedisStringCommands;import org.springframework.data.redis.connection.RedisZSetCommands;import org.springframework.data.redis.connection.jedis.JedisConverters;import org.springframework.data.redis.core.Cursor;import org.springframework.data.redis.core.RedisCallback;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.core.ScanOptions;import org.springframework.data.redis.core.types.Expiration;import org.springframework.data.redis.serializer.RedisSerializer;import redis.clients.jedis.Jedis;public class DefaultRedisCache implements Cache {private final static Logger logger = LoggerFactory.getLogger(DefaultRedisCache.class);private RedisTemplate redisTemplate;//秒private final static Long DEFAULT_EXPIRE = 12 * 60 * 60L;public DefaultRedisCache(RedisTemplate redisTemplate) {this.redisTemplate = redisTemplate;}@Overridepublic void put(final Object key, final Object value) {put(key, value, DEFAULT_EXPIRE);}@Overridepublic Object get(final Object key) {return redisTemplate.execute(new RedisCallback() {@Overridepublic Object doInRedis(RedisConnection connection) throws DataAccessException {RedisSerializer<Object> serializer = getRedisSerializer();byte[] keyByte = serializer.serialize(key);if(keyByte == null){return null;}byte[] bytes = connection.get(keyByte);if (bytes == null) {return null;}return serializer.deserialize(bytes);}});}@Overridepublic Object remove(final Object key) {return redisTemplate.execute(new RedisCallback() {@Overridepublic Object doInRedis(RedisConnection connection) throws DataAccessException {RedisSerializer<Object> serializer = getRedisSerializer();if (key == null) {return null;}byte[] bytes = serializer.serialize(key);return connection.del(bytes);}});}3、配置applicationContext-cache-test.xml文件<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><context:property-placeholder location="classpath:redis-config.properties" ignore-unresolvable="true"/><!-- jedis pool配置 --><bean id="jedisPoolConfig">4、配置redis-config.properties文件# jedis pool配置commons.cache.redis.maxTotal=1000commons.cache.redis.maxIdle=600commons.cache.redis.maxWait=1000commons.cache.redis.testOnBorrow=truecommons.cache.redis.testOnReturn=true# spring data redis 配置commons.cache.redis.host=192.168.1.230commons.cache.redis.port=6379commons.cache.redis.password=123456commons.cache.redis.timeout=10005、测试@ContextConfiguration(locations = {"classpath:applicationContext-cache-test.xml"})@RunWith(SpringJUnit4ClassRunner.class)public class CacheTest extends BaseTest{@Autowiredprivate Cache cache;@Testpublic void redisTest() {// 添加key为username的值到redis缓存里cache.put("username","nathan");// 获取值Object username = cache.get("username");System.out.println("cache.get = " + username);// 删除值//cache.remove("username");//Object delResult = cache.get("username");//System.out.println("cache.remove = " + delResult);}}更多redis知识请关注redis入门教程栏目。以上就是Spring-data-redis集成redis的方法的详细内容,更多请关注小潘博客其它相关文章!