java.net.ConnectException: Connection timed out (Connection timed out)

领域专家: C/C++技术领域

2019-11-10 05:22:26

连接一个MySQL数据库出现错误：
Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_162]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_162]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_162]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_162]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_162]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_162]
at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_162]
at java.net.Socket.<init>(Socket.java:434) ~[na:1.8.0_162]
at java.net.Socket.<init>(Socket.java:244) ~[na:1.8.0_162]
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253) ~[mysql-connector-java-5.1.6.jar!/:na]
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280) ~[mysql-connector-java-5.1.6.jar!/:na]
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026) ~[mysql-connector-java-5.1.6.jar!/:na]
... 14 common frames omitted

2019-11-10 00:56:42.509 ERROR 1 --- [reate-500772834] com.alibaba.druid.pool.DruidDataSource : create connection SQLException, url: jdbc:mysql://159.136.147.221:3306/BookDB, errorCode 0, state 08S01

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

但是我用Navicat for MySQL连接却是可以正常连接的，如何解决这个问题呢？

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clever101 2019-11-11

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搞明白了，数据库被黑了。

源者鬼道 2019-11-10

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你应该是没有加入Mysql的驱动jar包，你可以把这个贴到pom文件中，还有，你最好把相应的连接代码贴出来，只贴错误提示的话，不太能确定具体的错误。  <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.6</version> </dependency>