redis为什么会出现异常

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Exception in thread "main" redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed outat redis.clients.jedis.Connection.connect(Connection.java:155)at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:83)at redis.clients.jedis.Connection.sendCommand(Connection.java:94)at redis.clients.jedis.Connection.sendCommand(Connection.java:89)at redis.clients.jedis.BinaryClient.auth(BinaryClient.java:539)at redis.clients.jedis.BinaryJedis.auth(BinaryJedis.java:2000)at com.cheguanjia.test.Jdeis.main(Jdeis.java:20)

Caused by: java.net.SocketTimeoutException: connect timed outat 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:149)... 6 more

异常出现的原因：

liunx服务器的防火墙没有把6379的端口给外网访问

解决方案：

vim   /etc/sysconfig/iptables

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