详解SpringBoot Redis自适应配置(Cluster Standalone Sentinel)

核心代码段

提供一个JedisConnectionFactory  根据配置来判断 单点 集群 还是哨兵

 @Bean
 @ConditionalOnMissingBean
 public JedisConnectionFactory jedisConnectionFactory() {
  JedisConnectionFactory factory = null;

  String[] split = node.split(",");
  Set<HostAndPort> nodes = new LinkedHashSet<>();
  for (int i = 0; i < split.length; i++) {
   try {
    String[] split1 = split[i].split(":");
    nodes.add(new HostAndPort(split1[0], Integer.parseInt(split1[1])));
   } catch (Exception e) {
    throw new RuntimeException(String.format("出现配置错误!请确认node=[%s]是否正确", node));
   }
  }
  //获得默认的连接池构造器(怎么设计的，为什么不抽象出单独类，供用户使用呢) 有毒
  JedisClientConfiguration.JedisPoolingClientConfigurationBuilder jpcb =
    (JedisClientConfiguration.JedisPoolingClientConfigurationBuilder) JedisClientConfiguration.builder();
  //指定jedisPoolConifig来修改默认的连接池构造器（真麻烦，滥用设计模式！） ！！！！
  jpcb.poolConfig(jedisPoolConfig);
  //通过构造器来构造jedis客户端配置
  JedisClientConfiguration jedisClientConfiguration = jpcb.build();

  //如果是哨兵的模式
  if (!StringUtils.isEmpty(sentinel)) {
   logger.info("Redis use SentinelConfiguration");
   RedisSentinelConfiguration redisSentinelConfiguration = new RedisSentinelConfiguration();
   String[] sentinelArray = sentinel.split(",");
   for (String s : sentinelArray) {
    try {
     String[] split1 = s.split(":");
     redisSentinelConfiguration.addSentinel(new RedisNode(split1[0], Integer.parseInt(split1[1])));
    } catch (Exception e) {
     throw new RuntimeException(String.format("出现配置错误!请确认node=[%s]是否正确", node));
    }
   }
   factory = new JedisConnectionFactory(redisSentinelConfiguration, jedisClientConfiguration);

  }
  //如果是单个节点 用Standalone模式
  else if (nodes.size() == 1) {
   logger.info("Redis use RedisStandaloneConfiguration");
   for (HostAndPort n : nodes) {
    RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
    if (!StringUtils.isEmpty(password)) {
     redisStandaloneConfiguration.setPassword(RedisPassword.of(password));
    }
    redisStandaloneConfiguration.setPort(n.getPort());
    redisStandaloneConfiguration.setHostName(n.getHost());
    factory = new JedisConnectionFactory(redisStandaloneConfiguration, jedisClientConfiguration);
   }
  }
  //集群配置信息实现
  else {
   logger.info("Redis use RedisStandaloneConfiguration");
   RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
   nodes.forEach(n -> {
    redisClusterConfiguration.addClusterNode(new RedisNode(n.getHost(), n.getPort()));
   });
   if (!StringUtils.isEmpty(password)) {
    redisClusterConfiguration.setPassword(RedisPassword.of(password));
   }
   redisClusterConfiguration.setMaxRedirects(maxRedirect);
   factory = new JedisConnectionFactory(redisClusterConfiguration, jedisClientConfiguration);
  }
  return factory;
 }

Configration

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.CacheErrorHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.*;
import org.springframework.data.redis.connection.jedis.JedisClientConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.util.StringUtils;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisPoolConfig;

import java.util.LinkedHashSet;
import java.util.Set;

/**
 * @Author foxzzz
 * @Class SelfAdaptionRedisConfig
 * @Description 自适应redis配置
 * 适用于 单点[主从] 哨兵模式 集群模式
 * @Date 2020/7/6 14:34
 */

@Configuration
@EnableCaching
public class SelfAdaptionRedisConfig<K, V> extends CachingConfigurerSupport {
 private final static Logger logger = LoggerFactory.getLogger(SelfAdaptionRedisConfig.class);

 @Value("${spring.redis.node}")
 private String node;
 @Value("${spring.redis.timeout:0}")
 private int timeout;
 @Value("${spring.redis.password:}")
 private String password;
 @Value("${spring.redis.sentinel:}")
 private String sentinel;

 @Value("${spring.redis.jedis.pool.max-total:8}")
 private int maxTotal;
 @Value("${spring.redis.jedis.pool.max-idle:8}")
 private int maxIdle;
 @Value("${spring.redis.jedis.pool.min-idle:0}")
 private int minIdle;
 @Value("${spring.redis.jedis.pool.max-wait:-1}")
 private long maxWaitMillis;
 @Value("${spring.redis.jedis.pool.test-on-borrow:true}")
 private boolean testOnBorrow;
 @Value("${spring.redis.jedis.factory.max-redirects:5}")
 private int maxRedirect;

 @Autowired
 private JedisPoolConfig jedisPoolConfig;
 @Autowired
 private JedisConnectionFactory jedisConnectionFactory;

 @Bean
 @ConditionalOnMissingBean
 @Override
 public CacheManager cacheManager() {
  // 初始化缓存管理器，在这里我们可以缓存的整体过期时间什么的，我这里默认没有配置
  logger.info("初始化 -> [{}]", "CacheManager RedisCacheManager Start");
  RedisCacheManager.RedisCacheManagerBuilder builder = RedisCacheManager
    .RedisCacheManagerBuilder
    .fromConnectionFactory(jedisConnectionFactory);
  return builder.build();
 }

 @Bean
 @ConditionalOnMissingBean
 @Override
 public CacheErrorHandler errorHandler() {
  // 异常处理，当Redis发生异常时，打印日志，但是程序正常走
  logger.info("初始化 -> [{}]", "Redis CacheErrorHandler");
  CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() {
   @Override
   public void handleCacheGetError(RuntimeException e, Cache cache, Object key) {
    logger.error("Redis occur handleCacheGetError：key -> [{}]", key, e);
   }

   @Override
   public void handleCachePutError(RuntimeException e, Cache cache, Object key, Object value) {
    logger.error("Redis occur handleCachePutError：key -> [{}]；value -> [{}]", key, value, e);
   }

   @Override
   public void handleCacheEvictError(RuntimeException e, Cache cache, Object key) {
    logger.error("Redis occur handleCacheEvictError：key -> [{}]", key, e);
   }

   @Override
   public void handleCacheClearError(RuntimeException e, Cache cache) {
    logger.error("Redis occur handleCacheClearError：", e);
   }
  };
  return cacheErrorHandler;
 }

 @Bean
 @ConditionalOnMissingBean
 public JedisPoolConfig jedisPoolConfig() {
  JedisPoolConfig config = new JedisPoolConfig();
  // 获取连接时的最大等待毫秒数(如果设置为阻塞时BlockWhenExhausted),如果超时就抛异常, 小于零:阻塞不确定的时间, 默认-1
  config.setMaxWaitMillis(maxWaitMillis);
  //最小空闲连接数, 默认0
  config.setMinIdle(minIdle);
  // 最大空闲连接数, 默认8个
  config.setMaxIdle(maxIdle);
  // 最大连接数, 默认值8个
  config.setMaxTotal(maxTotal);
  //对拿到的connection进行validateObject校验
  config.setTestOnBorrow(testOnBorrow);
  return config;
 }

// private JedisCluster getJedisCluster() {
//  String[] split = node.split(",");
//  Set<HostAndPort> nodes = new LinkedHashSet<>();
//  for (int i = 0; i < split.length; i++) {
//   try {
//    String[] split1 = split[i].split(":");
//    nodes.add(new HostAndPort(split1[0], Integer.parseInt(split1[1]))));
//   } catch (Exception e) {
//   }
//  }
//  JedisCluster jedisCluster = null;
//  if (StringUtils.isEmpty(password)) {
//   jedisCluster = new JedisCluster(nodes, 5000, 3000, 10, jedisPoolConfig);
//  } else {
//   jedisCluster = new JedisCluster(nodes, 5000, 3000, 10, password, jedisPoolConfig);
//  }
// }

 @Bean
 @ConditionalOnMissingBean
 public JedisConnectionFactory jedisConnectionFactory() {
  JedisConnectionFactory factory = null;

  String[] split = node.split(",");
  Set<HostAndPort> nodes = new LinkedHashSet<>();
  for (int i = 0; i < split.length; i++) {
   try {
    String[] split1 = split[i].split(":");
    nodes.add(new HostAndPort(split1[0], Integer.parseInt(split1[1])));
   } catch (Exception e) {
    throw new RuntimeException(String.format("出现配置错误!请确认node=[%s]是否正确", node));
   }
  }
  //获得默认的连接池构造器(怎么设计的，为什么不抽象出单独类，供用户使用呢) 有毒
  JedisClientConfiguration.JedisPoolingClientConfigurationBuilder jpcb =
    (JedisClientConfiguration.JedisPoolingClientConfigurationBuilder) JedisClientConfiguration.builder();
  //指定jedisPoolConifig来修改默认的连接池构造器（真麻烦，滥用设计模式！） ！！！！
  jpcb.poolConfig(jedisPoolConfig);
  //通过构造器来构造jedis客户端配置
  JedisClientConfiguration jedisClientConfiguration = jpcb.build();

  //如果是哨兵的模式
  if (!StringUtils.isEmpty(sentinel)) {
   logger.info("Redis use SentinelConfiguration");
   RedisSentinelConfiguration redisSentinelConfiguration = new RedisSentinelConfiguration();
   String[] sentinelArray = sentinel.split(",");
   for (String s : sentinelArray) {
    try {
     String[] split1 = s.split(":");
     redisSentinelConfiguration.addSentinel(new RedisNode(split1[0], Integer.parseInt(split1[1])));
    } catch (Exception e) {
     throw new RuntimeException(String.format("出现配置错误!请确认node=[%s]是否正确", node));
    }
   }
   factory = new JedisConnectionFactory(redisSentinelConfiguration, jedisClientConfiguration);

  }
  //如果是单个节点 用Standalone模式
  else if (nodes.size() == 1) {
   logger.info("Redis use RedisStandaloneConfiguration");
   for (HostAndPort n : nodes) {
    RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
    if (!StringUtils.isEmpty(password)) {
     redisStandaloneConfiguration.setPassword(RedisPassword.of(password));
    }
    redisStandaloneConfiguration.setPort(n.getPort());
    redisStandaloneConfiguration.setHostName(n.getHost());
    factory = new JedisConnectionFactory(redisStandaloneConfiguration, jedisClientConfiguration);
   }
  }
  //集群配置信息实现
  else {
   logger.info("Redis use RedisStandaloneConfiguration");
   RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
   nodes.forEach(n -> {
    redisClusterConfiguration.addClusterNode(new RedisNode(n.getHost(), n.getPort()));
   });
   if (!StringUtils.isEmpty(password)) {
    redisClusterConfiguration.setPassword(RedisPassword.of(password));
   }
   redisClusterConfiguration.setMaxRedirects(maxRedirect);
   factory = new JedisConnectionFactory(redisClusterConfiguration, jedisClientConfiguration);
  }
  return factory;
 }

 @Bean
 @ConditionalOnMissingBean
 public RedisTemplate<String, Object> redisTemplate(JedisConnectionFactory jedisConnectionFactory) {
  //设置序列化
  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);
  // 配置redisTemplate
  RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
  redisTemplate.setConnectionFactory(jedisConnectionFactory);
  RedisSerializer stringSerializer = new StringRedisSerializer();
  // key序列化
  redisTemplate.setKeySerializer(stringSerializer);
  // value序列化
  redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
//  redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
  // Hash key序列化
  redisTemplate.setHashKeySerializer(stringSerializer);
  // Hash value序列化
  redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
  redisTemplate.afterPropertiesSet();
  return redisTemplate;
 }
}

pom依赖

<dependencies>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-data-redis</artifactId>
   <version>${springboot.version}</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter</artifactId>
   <scope>provided</scope>
  </dependency>
  <dependency>
   <groupId>redis.clients</groupId>
   <artifactId>jedis</artifactId>
   <version>${redis.version}</version>
  </dependency>

  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-annotations</artifactId>
   <scope>provided</scope>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-databind</artifactId>
   <scope>provided</scope>
  </dependency>
  <dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-core</artifactId>
   <scope>provided</scope>
  </dependency>
 </dependencies>

配置文件

1.yml配置

1.1支持 Cluster模式 集群

• node有多个redis的地址,以逗号分隔
• 如果redis没有密码直接去掉配置就可以了 yml配置

spring:
 redis:
 node: 127.0.0.1:1001,127.0.0.1:1002,127.0.0.1:1003
 password: 123456

properties配置

spring.redis.node=127.0.0.1:1001,127.0.0.1:1002,127.0.0.1:1003
spring.redis.password=123456

1.2支持 Standalone模式 单点

node里只有一个redis地址的时候,会自动变成单点模式 yml配置

spring:
 redis:
 node: 127.0.0.1:1001
 password: 123456

properties配置

spring.redis.node=127.0.0.1:1001
spring.redis.password=123456

1.3支持 Sentinel模式 哨兵

当配置上sentinel以后就变成了哨兵模式 多个哨兵可以以逗号分割 yml配置

spring:
 redis:
 node: 127.0.0.1:1001
 sentinel:127.0.0.1:1002,127.0.0.1:1003
 password: 123456

properties配置

spring.redis.node=127.0.0.1:1001
spring.redis.sentinel:127.0.0.1:1002,127.0.0.1:1003
spring.redis.password=123456

1.4覆盖默认配置

如果没有配置这些信息,就会走默认配置 也可以在properties或者yml覆盖默认配置

#最大连接数, 默认值8个
spring.redis.jedis.pool.max-total=8
#最大空闲连接数, 默认8个
spring.redis.jedis.pool.max-idle=8
#最小空闲连接数, 默认0
spring.redis.jedis.pool.min-idle=0
#获取连接时的最大等待毫秒数,如果超时就抛异常, 小于零:阻塞不确定的时间, 默认-1
spring.redis.jedis.pool.max-wait=-1
#对拿到的connection进行validateObject校验
spring.redis.jedis.pool.test-on-borrow=true
#集群时最大重定向个数默认5
spring.redis.jedis.factory.max-redirects=5

使用

代码使用

@Autowired
 private RedisTemplate<String, Object> redisTemplate;

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