0x01 redis连接异常
先贴一张项目启动的堆栈信息
2023-02-06 11:20:14:162 WARN [boundedElastic-1] o.s.b.a.d.r.RedisReactiveHealthIndicator -Redis health check failed org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1602) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1533) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1358) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1341) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedReactiveConnection(LettuceConnectionFactory.java:1083) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getReactiveConnection(LettuceConnectionFactory.java:479) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getReactiveConnection(LettuceConnectionFactory.java:105) at reactor.core.publisher.MonoSupplier.call(MonoSupplier.java:67) at reactor.core.publisher.FluxSubscribeOnCallable$CallableSubscribeOnSubscription.run(FluxSubscribeOnCallable.java:227) at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:68) at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:28) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:833) Caused by: org.springframework.data.redis.connection.PoolException: Could not get a resource from the pool at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:105) at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.getConnection(LettuceConnectionFactory.java:1531) ... 14 common frames omitted Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to localhost/<unresolved>:6379 at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78) at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56) at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:350) at io.lettuce.core.RedisClient.connect(RedisClient.java:216) at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:111) at java.base/java.util.Optional.orElseGet(Optional.java:364) at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:111) at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.lambda$getConnection$0(LettucePoolingConnectionProvider.java:93) at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:211) at io.lettuce.core.support.ConnectionPoolSupport$RedisPooledObjectFactory.create(ConnectionPoolSupport.java:201) at org.apache.commons.pool2.BasePooledObjectFactory.makeObject(BasePooledObjectFactory.java:70) at org.apache.commons.pool2.impl.GenericObjectPool.create(GenericObjectPool.java:571) at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:298) at org.apache.commons.pool2.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:223) at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:122) at io.lettuce.core.support.ConnectionPoolSupport$1.borrowObject(ConnectionPoolSupport.java:117) at org.springframework.data.redis.connection.lettuce.LettucePoolingConnectionProvider.getConnection(LettucePoolingConnectionProvider.java:99) ... 15 common frames omitted Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: localhost/127.0.0.1:6379 Caused by: java.net.ConnectException: Connection refused: no further information at java.base/sun.nio.ch.Net.pollConnect(Native Method) at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672) at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:946) at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:337) at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:334) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:776) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.base/java.lang.Thread.run(Thread.java:833)
在升级springboot3.x后启动项目发现redis连接报错了，根据堆栈异常信息发现redis竟然去链接了本地服务，该项目使用了Nacos配置也都在上，突然的异常感觉挺奇怪的，本来以为是升级后无法拉取到Nacos的配置信息了后经验证使用@Value注解或者其他配置类均未发生该问题，那就只能怀疑是spring对redis的配置支持改变了，所以直接点就去找了redis的自动配置类发现确实改变了配置前缀为spring.data.redis（原该项目springboot版本为2.7.4时redis配置前缀为spring.redis）贴一下版本属性内容对比图
3.x版本时：
@ConfigurationProperties(prefix = "spring.data.redis")
public class RedisProperties {
/**
* Database index used by the connection factory.
*/
private int database = 0;
/**
* Connection URL. Overrides host, port, and password. User is ignored. Example:
* redis://user:password@example.com:6379
*/
private String url;
/**
* Redis server host.
*/
private String host = "localhost";
/**
* Login username of the redis server.
*/
private String username;
/**
* Login password of the redis server.
*/
private String password;
/**
* Redis server port.
*/
private int port = 6379;
/**
* Whether to enable SSL support.
*/
private boolean ssl;
/**
* Read timeout.
*/
private Duration timeout;
/**
* Connection timeout.
*/
private Duration connectTimeout;
/**
* Client name to be set on connections with CLIENT SETNAME.
*/
private String clientName;
/**
* Type of client to use. By default, auto-detected according to the classpath.
*/
private ClientType clientType;
private Sentinel sentinel;
private Cluster cluster;
private final Jedis jedis = new Jedis();
private final Lettuce lettuce = new Lettuce();
}
2.7.4版本时：
@ConfigurationProperties(prefix = "spring.redis")
public class RedisProperties {
/**
* Database index used by the connection factory.
*/
private int database = 0;
/**
* Connection URL. Overrides host, port, and password. User is ignored. Example:
* redis://user:password@example.com:6379
*/
private String url;
/**
* Redis server host.
*/
private String host = "localhost";
/**
* Login username of the redis server.
*/
private String username;
/**
* Login password of the redis server.
*/
private String password;
/**
* Redis server port.
*/
private int port = 6379;
/**
* Whether to enable SSL support.
*/
private boolean ssl;
/**
* Read timeout.
*/
private Duration timeout;
/**
* Connection timeout.
*/
private Duration connectTimeout;
/**
* Client name to be set on connections with CLIENT SETNAME.
*/
private String clientName;
/**
* Type of client to use. By default, auto-detected according to the classpath.
*/
private ClientType clientType;
private Sentinel sentinel;
private Cluster cluster;
private final Jedis jedis = new Jedis();
private final Lettuce lettuce = new Lettuce();
}
至此问题解决。
