1,利用spring-data-redis整合
项目使用的pom.xml:
RedisDataSource:定义三个方法
public interface RedisDataSource { public abstract ShardedJedis getRedisClient(); public void returnResource(ShardedJedis shardedJedis); public void returnResource(ShardedJedis shardedJedis,boolean broken);}实现redisDataSource:
1, 注入配置好的ShardedJedisPool,这三个方法的作用:
- getRedisClient() : 取得redis的客户端,可以执行命令了。
- returnResource(ShardedJedis shardedJedis) : 将资源返还给pool
- returnResource(ShardedJedis shardedJedis, boolean broken) : 出现异常后,将资源返还给pool (其实不需要第二个方法)
第二层的封装:RedisClientTemplate,例子实现了放值和取值。最后代码提供了全部命令的实现。
代码就是映射性质的又一次调用jedis的方法而已,用了个broken来做标示符,决定返还资源的方式。
这一层的目的主要也是让再上层的调用不需要关心pool中链接的取得和返还问题了。
@Repository("redisClientTemplate")public class RedisClientTemplate { private static final Logger log = LoggerFactory.getLogger(RedisClientTemplate.class); @Autowired private RedisDataSource redisDataSource; public void disconnect() { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); shardedJedis.disconnect(); } /** * 设置单个值 * * @param key * @param value * @return */ public String set(String key, String value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.set(key, value); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 获取单个值 * * @param key * @return */ public String get(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.get(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }}测试代码:
public static void main(String[] args) { ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/data-source.xml"); RedisClientTemplate redisClient = (RedisClientTemplate)ac.getBean("redisClientTemplate"); redisClient.set("a", "abc"); System.out.println(redisClient.get("a")); }附上RedisClientTemplate全部实现:
RedisClientTemplate代码太多,附上下载地址:http://xiazai.jb51.net/201701/yuanma/RedisClientTemplate_jb51.rar
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。