花生_TL007

这个屌丝很懒，什么也没留下！

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Jedis 连接 Redis 常见错误_redis.clients.jedis.exceptions.jedisconnectionexce

作者：花生_TL007 | 2024-04-27 15:31:18

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redis.clients.jedis.exceptions.jedisconnectionexception: java.net.sockettime

1、SocketTimeoutException 连接超时

redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out

at redis.clients.jedis.Connection.connect(Connection.java:154)

at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:83)

at redis.clients.jedis.Connection.sendCommand(Connection.java:93)

at redis.clients.jedis.Connection.sendCommand(Connection.java:88)

at redis.clients.jedis.Jedis.get(Jedis.java:97)

at com.zyao89.jedis.JedisTest.test1(JedisTest.java:18)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Caused by: java.net.SocketTimeoutException: connect timed out

at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)

at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)

at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)

at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)

at java.net.AbstractPlainSocketImpl.connect(Unknown Source)

at java.net.PlainSocketImpl.connect(Unknown Source)

at java.net.SocksSocketImpl.connect(Unknown Source)

at java.net.Socket.connect(Unknown Source)

at redis.clients.jedis.Connection.connect(Connection.java:148)

... 28 more

这种情况先排除是否开启了redis，或者ip，端口是否正确。如果都没问题，那八成就是防火墙了。

可能是redis的6379端口无法访问，请先在cmd中输入命令

telnet 127.0.0.1 6379

如果不能访问，需要在远程机器关掉防火墙或者添加允许通过

CentOS，root用户登陆，输入如下命令开启端口：

/sbin/iptables -I INPUT -p tcp --dport 6379 -j ACCEPT

刷新自动启动保存

/etc/rc.d/init.d/iptables save

2、Connection refused 拒绝访问

Exception in thread "main" redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused: connect

at redis.clients.jedis.Connection.connect(Connection.java:207)

at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:93)

at redis.clients.jedis.Connection.sendCommand(Connection.java:126)

at redis.clients.jedis.Connection.sendCommand(Connection.java:121)

at redis.clients.jedis.BinaryClient.ping(BinaryClient.java:106)

at redis.clients.jedis.BinaryJedis.ping(BinaryJedis.java:195)

at practice.RedisJava.main(RedisJava.java:13)

Caused by: java.net.ConnectException: Connection refused: connect

at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)

at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)

at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)

at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)

at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

at java.net.Socket.connect(Socket.java:589)

at redis.clients.jedis.Connection.connect(Connection.java:184)

... 6 more

修改redis.conf配置文件，使用vim命令打开，找到bind那行修改后，wq保存退出，重启redis-server。

redis.conf编辑后

编辑后如上图，用#号注释。

3、DENIED Redis is running in protected mode （保护模式）

redis.clients.jedis.exceptions.JedisDataException: DENIED Redis is running in protected mode because protected mode is enabled, no bind address was specified, no authentication password is requested to clients. In this mode connections are only accepted from the loopback interface. If you want to connect from external computers to Redis you may adopt one of the following solutions: 1) Just disable protected mode sending the command 'CONFIG SET protected-mode no' from the loopback interface by connecting to Redis from the same host the server is running, however MAKE SURE Redis is not publicly accessible from internet if you do so. Use CONFIG REWRITE to make this change permanent. 2) Alternatively you can just disable the protected mode by editing the Redis configuration file, and setting the protected mode option to 'no', and then restarting the server. 3) If you started the server manually just for testing, restart it with the '--protected-mode no' option. 4) Setup a bind address or an authentication password. NOTE: You only need to do one of the above things in order for the server to start accepting connections from the outside.

at redis.clients.jedis.Protocol.processError(Protocol.java:117)

at redis.clients.jedis.Protocol.process(Protocol.java:142)

at redis.clients.jedis.Protocol.read(Protocol.java:196)

at redis.clients.jedis.Connection.readProtocolWithCheckingBroken(Connection.java:288)

at redis.clients.jedis.Connection.getBinaryBulkReply(Connection.java:207)

at redis.clients.jedis.Connection.getBulkReply(Connection.java:196)

at redis.clients.jedis.Jedis.get(Jedis.java:98)