作者 l 孙亮亮
来源 l SpringForAll社区
这次写一下springboot与redis的结合,这里使用的是redis集群模式(主从),主从环境的搭建,请参考redis集群搭建
搭建完redis集群环境后,开始springboot之旅
redis的介绍及应用场景参考 redis介绍
我们还是从redis项目构建开始说起,首先还是进入的spring官网, 从这里开始构建项目,如下图
当然也可以自己添加pom文件,如下
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId></dependency>
application.properties中
#-----------------------# start redis clusterjedis.cluster.nodesString= 103.45.12.176:7000,47.88.221.76:7000,103.45.12.176:7001,47.88.221.76:7001,103.45.12.176:7002,47.88.221.76:7002jedis.cluster.testWhileIdle=truejedis.cluster.connectionTimeout=60jedis.cluster.soTimeout=60jedis.cluster.maxAttempts=1000jedis.cluster.password=12597758# end redis cluster config#---------------------------------
这里是核心jedisCluster这个bean的创建
@Configuration@ConfigurationProperties(prefix = "jedis.cluster")public class JedisClusterConfig { private String nodesString; private Boolean testWhileIdle; private Integer connectionTimeout; private Integer soTimeout; private Integer maxAttempts; private String password; public Boolean getTestWhileIdle() { return testWhileIdle; }
public void setTestWhileIdle(Boolean testWhileIdle) { this.testWhileIdle = testWhileIdle; }
public Integer getConnectionTimeout() { return connectionTimeout; }
public String getPassword() { return password; }
public void setPassword(String password) { this.password = password; }
public void setConnectionTimeout(Integer connectionTimeout) { this.connectionTimeout = connectionTimeout; }
public Integer getSoTimeout() { return soTimeout; }
public void setSoTimeout(Integer soTimeout) { this.soTimeout = soTimeout; }
public Integer getMaxAttempts() { return maxAttempts; }
public void setMaxAttempts(Integer maxAttempts) { this.maxAttempts = maxAttempts; }
public String getNodesString() { return nodesString; }
public void setNodesString(String nodesString) { this.nodesString = nodesString; }
@Bean public JedisCluster jedisCluster() {
String[] nodes = nodesString.split(","); Set<HostAndPort> nodeSet = new HashSet<HostAndPort>(nodes.length);
for (String node : nodes) { String[] nodeAttrs = node.trim().split(":"); HostAndPort hap = new HostAndPort(nodeAttrs[0], Integer.valueOf(nodeAttrs[1])); nodeSet.add(hap); } JedisPoolConfig poolConfig = new JedisPoolConfig(); // TODO:password and poolconfig JedisCluster jc = new JedisCluster(nodeSet, connectionTimeout, soTimeout, maxAttempts,password, poolConfig); return jc; }}
经过这几篇的博客,可能也发现很多接口的定义,然后由不同的业务类去实现,面向接口的编程也是经历过近期的一个项目才有了比较深的理解,这些都是跟朱哥和军哥学习的,代码编写的规范,对于一个程序员来说,越早养成越好
public interface NoSqlClient<T> { void set(final String key, final T value);
void set(String key, T value, Long expiry);
<T> boolean exist(Class<T> clazz, String key);
T get(final String key, Class<T> clazz);
<T> void delete(String key);
<T> void hashSet(String key, String hashKey, T hashValue);
Object hashGet(String key, String hashKey, Class<?> hashValueClazz);}
@Servicepublic class JedisClusterClient<T> implements NoSqlClient<T> { protected final Logger logger = LoggerFactory.getLogger(this.getClass());
@Autowired private JedisCluster jedisCluster; public void set(String key, T value){ logger.info("-------------"+jedisCluster); jedisCluster.set(key,JSON.toJSONString(value,true)); }
@Override public void set(String key, T value, Long expiry) {
}
@Override public <T1> boolean exist(Class<T1> clazz, String key) { checkRedisKey(key); return jedisCluster.exists(key); }
@Override public T get(String key, Class<T> clazz) { checkRedisKey(key); String value = jedisCluster.get(key); return JSON.parseObject(value, clazz); }
@Override public <T1> void delete(String key) { checkRedisKey(key); jedisCluster.del(key); }
@Override public <T1> void hashSet(String key, String hashKey, T1 hashValue) { checkRedisKey(key); jedisCluster.hset(key, hashKey, JSON.toJSONString(hashValue)); }
@Override public Object hashGet(String key, String hashKey, Class<?> hashValueClazz) { return null; } /** * 检查Redis参数 * * @param key * @param value * @return */ private String checkRedisNoSqlSupport(final String key, final T value) { checkRedisKey(key); if (value == null) throw new RedisException("value is null!"); String stringValue = null; try { stringValue = JSON.toJSONString(value,true); } catch (JSONException e) { throw new RedisException("value toJSONString exception!"); } if (StringUtils.isEmpty(stringValue)) throw new RedisException("value is null!"); return stringValue; }
/** * 检查Redis key,redis key 长度建议不要超过1M,redis支持512M * @param key */ private void checkRedisKey(final String key) { if (StringUtils.isEmpty(key)) throw new RedisException("key is null!"); if (key.length() > 1000000L) throw new RedisException("length of key greater than 1M!"); }}
这里我只写了几个基础的核心配置,包括一些异常的处理,这里都没有贴出代码,当然代码在文章最后也会给出,不必担心
不同的业务只需继承上面的类即可
@Componentpublic class UserInfoCacheDao extends JedisClusterClient<UserInfo> { public void setUserInfo(UserInfo userInfo){ super.set("lessons.user:1",userInfo); }}
这里同样也是只写了一个set方法
@RunWith(SpringJUnit4ClassRunner.class)@SpringBootTestpublic class UserInfoCacheDaoTest { @Autowired private UserInfoCacheDao userInfoCacheDao; @Test public void setUserInfo() throws Exception { UserInfo userInfo = new UserInfo(); userInfo.setAge(12); userInfo.setId(1000l); userInfo.setName("admin"); userInfo.setNickname("管理员"); userInfo.setPassword("123445"); userInfoCacheDao.setUserInfo(userInfo); }
}
添加完成后,去查看发现,已经有已经生成。