将Tomcat容器连接到mysql容器：JDBCConnectionException：无法获取JDBC连接

我试图将使用Hibernate，XAMPP for Apache tomcat和mysql服务器在Windows上创build的Web应用程序移植到Linux，使用Docker。 我已经部署我的战争文件在tomcat容器上的webapps文件夹下，链接到mysql容器…事实是，我的web应用程序非常非常慢：即，第一个function是login/注册forms：在Linux上，大约几分钟！

我已经使用以下命令创build了容器：

docker run -d --name mysql-phpmyadmin -p 127.0.0.1:8686:80 -p 127.0.0.1:3306:3306 grzesiekb/mysql-phpmyadmin docker run -d -p 8484:8080 -p 8007:8009 --name tomcat8-linked --link mysql-phpmyadmin:mysqlphp tomcat:8.0-jre8 

这是我的hibernate.cfg.xml文件：

 <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- queste configurazioni sono per il testing in locale --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://mysqlphp:3306/at_db</property> <property name="hibernate.connection.username">root</property> <property name="connection.password">mysql_pass</property> <!-- JDBC connection pool (use the built-in) --> <property name="connection.pool_size">1</property> <!-- SQL dialect --> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Enable Hibernate's automatic session context management --> <property name="current_session_context_class">thread</property> <!-- Disable the second-level cache --> <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property> <property name="show_sql">false</property> <!--<property name="hibernate.hbm2ddl.auto">create-drop</property> se al posto di update metto create, mi cancella il db e lo rifa --> <property name="hbm2ddl.auto">update</property> <!-- Entity --> <mapping class="com.ATBoscoCastellano.Entity.ClientUser" /> <mapping class="com.ATBoscoCastellano.Entity.GenericUser" /> <mapping class="com.ATBoscoCastellano.SessionManagement.SessionToken" /> <mapping class="com.ATBoscoCastellano.Entity.Post" /> <!-- <mapping class="it.boscus.StarFoods.entity.ExampleEmbeddableIDClass2" /> --> </session-factory> </hibernate-configuration> 

这就是我从tomcat日志中看到的：

 20-Feb-2017 07:48:15.869 SEVERE [http-apr-8080-exec-3] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [com.ATBoscoCastellano.servlets.UserSessionServlet] in context with path [/AtApplicazione1] threw exception org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:115) at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111) .... Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 232,149,705 milliseconds ago. The last packet sent successfully to the server was 232,149,705 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this probl em. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:983) at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:3644) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2452) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2617) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2546) at com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:4873) at org.hibernate.engine.jdbc.connections.internal.PooledConnections.poll(PooledConnections.java:76) at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.getConnection(DriverManagerConnectionProviderImpl.java:187) at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:386) at org.hibernate.resource.jdbc.internal.LogicalConnectionManagedImpl.acquireConnectionIfNeeded(LogicalConnectionManagedImpl.java:84) ... 34 more Caused by: java.net.SocketException: Broken pipe (Write failed) at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:111) at java.net.SocketOutputStream.write(SocketOutputStream.java:155) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) 

我试过在冬眠的Url上添加autoReconnect=true ，但仍然不起作用。 在我的MySQL my.cnf没有wait_timeout行。

我不得不说，networking应用程序的作品，但我参加了很多时间（几十分钟）后，我的servlet（通过hibernate与mysql容器交互）的作品。 这个pipe理login/registry单的servlet从db中检查插入凭证的最终存在。

我有基于tomcat8.0-jre8官方tomcat8.0-jre8 tomcat容器;

从mysql -V我有

 root@1c53f40b63d3:/var/log/mysql# mysql -V mysql Ver 14.14 Distrib 5.5.42, for debian-linux-gnu (x86_64) using readline 6.3 

我真的不知道为什么在Windows上它完美的作品，但在这里没有。 我的servlet仍处于“等待中”状态…我真的很想知道为什么有那么多的时间花费在如何解决它。