spring boot配置同时支持单机和集群redis
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2022-05-28 14:01:40
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正式环境都是用集群版redis,开发用的单机版,领导要求通过配置文件来确定是单机还是集群,由于单机版已经实现了,那么准备就在单机版基础上进行开发,然后发现spring boot1.2版本已经比较老,就升级版本,由于升级了spring boot版本,对应其他配置也进行了修改。最终修改的配置如下:
pom.xml
<properties> <java.version>1.8</java.version> <spring.version>4.3.9.RELEASE</spring.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> </parent> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> <!--原来是spring-boot-starter-redis--> </dependency> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.9.0</version> </dependency>
redis.properties文件基本没有变:
# REDIS (RedisProperties) # Redis服务器地址(集群用逗号分隔) #spring.redis.host=xxx.xxx.xxx.xxx:xxxxx spring.redis.host=xxx.xxx.xxx.xxx:xxxxx,xxx.xxx.xxx.xxx:xxxxx # Redis服务器连接密码(默认为空) spring.redis.password=123456 # 连接超时时间(毫秒) spring.redis.timeout=2000 spring.redis.max-redirects=8
注意:host变成ip:port,集群多个ip和端口用“,”分割,为什么这样写spring框架中RedisClusterConfiguration类中就是这样分割。看一下源代码:
//RedisClusterConfiguration类: private static final String REDIS_CLUSTER_NODES_CONFIG_PROPERTY = "spring.redis.cluster.nodes"; //默认是配置这样的 …… public RedisClusterConfiguration(PropertySource<?> propertySource) { notNull(propertySource, "PropertySource must not be null!"); this.clusterNodes = new LinkedHashSet<RedisNode>(); //有spring.redis.cluster.nodes配置,分割这个属性,添加node if (propertySource.containsProperty(REDIS_CLUSTER_NODES_CONFIG_PROPERTY)) { appendClusterNodes(commaDelimitedListToSet(propertySource.getProperty(REDIS_CLUSTER_NODES_CONFIG_PROPERTY) .toString())); } …… } //函数会调用,用","分割: public static String[] commaDelimitedListToStringArray(String str) { return delimitedListToStringArray(str, ","); } //然后用":"分割组装成RedisNode private void appendClusterNodes(Set<String> hostAndPorts) { for (String hostAndPort : hostAndPorts) { addClusterNode(readHostAndPortFromString(hostAndPort)); } } private RedisNode readHostAndPortFromString(String hostAndPort) { String[] args = split(hostAndPort, ":"); notNull(args, "HostAndPort need to be seperated by ':'."); isTrue(args.length == 2, "Host and Port String needs to specified as host:port"); return new RedisNode(args[0], Integer.valueOf(args[1]).intValue()); }
在cacheconfig类中变成这样的:
@Bean public RedisClusterConfiguration getClusterConfiguration() { if (host.split(",").length > 1) { //如果是host是集群模式的才进行以下操作 Map<String, Object> source = new HashMap<String, Object>(); source.put("spring.redis.cluster.nodes", host); source.put("spring.redis.cluster.timeout", timeout); source.put("spring.redis.cluster.max-redirects", redirects); //在源码的注释中可以看到是这样配置,以为这样写就不用在Connection中不用在认证,后来确定太天真了
source.put("spring.redis.cluster.password", password); return new RedisClusterConfiguration(new MapPropertySource("RedisClusterConfiguration", source)); } else { return null; } } @Bean public JedisConnectionFactory jedisConnectionFactory() { if (host.split(",").length == 1) { JedisConnectionFactory factory = new JedisConnectionFactory(); factory.setHostName(host.split(":")[0]); factory.setPort(Integer.valueOf(host.split(":")[1])); factory.setPassword(password); factory.setTimeout(timeout); return factory; } else { JedisConnectionFactory jcf = new JedisConnectionFactory(getClusterConfiguration()); jcf.setPassword(password); //集群的密码认证 return jcf; } } //这样改造之后,redisTemplate模板就不用改了,之前写的redisUtil类也不用变了
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