java连接mysql数据库,出现错误:java.sql.SQLException
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警告: Could not obtain connection metadata
java.sql.SQLException: Communication link failure: java.io.IOException, underlying cause: Unexpected end of input stream
** BEGIN NESTED EXCEPTION **
java.io.IOException
MESSAGE: Unexpected end of input stream
STACKTRACE:
java.io.IOException: Unexpected end of input stream
at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at com.mysql.jdbc.Connection.<init>(Connection.java:491)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at org.jbpm.persistence.db.DbPersistenceServiceFactory.getSessionFactory(DbPersistenceServiceFactory.java:91)
at org.jbpm.persistence.db.DbPersistenceService.getSessionFactory(DbPersistenceService.java:95)
at org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenceService.java:99)
at org.jbpm.persistence.db.DbPersistenceService.getJobSession(DbPersistenceService.java:359)
at org.jbpm.JbpmContext.getJobSession(JbpmContext.java:563)
at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:112)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58)
** END NESTED EXCEPTION **
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:699)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at com.mysql.jdbc.Connection.<init>(Connection.java:491)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at org.jbpm.persistence.db.DbPersistenceServiceFactory.getSessionFactory(DbPersistenceServiceFactory.java:91)
at org.jbpm.persistence.db.DbPersistenceService.getSessionFactory(DbPersistenceService.java:95)
at org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenceService.java:99)
at org.jbpm.persistence.db.DbPersistenceService.getJobSession(DbPersistenceService.java:359)
at org.jbpm.JbpmContext.getJobSession(JbpmContext.java:563)
at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:112)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58)
2008-5-21 11:34:48 org.hibernate.dialect.Dialect <init>
java.sql.SQLException: Communication link failure: java.io.IOException, underlying cause: Unexpected end of input stream
** BEGIN NESTED EXCEPTION **
java.io.IOException
MESSAGE: Unexpected end of input stream
STACKTRACE:
java.io.IOException: Unexpected end of input stream
at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:1096)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:626)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at com.mysql.jdbc.Connection.<init>(Connection.java:491)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at org.jbpm.persistence.db.DbPersistenceServiceFactory.getSessionFactory(DbPersistenceServiceFactory.java:91)
at org.jbpm.persistence.db.DbPersistenceService.getSessionFactory(DbPersistenceService.java:95)
at org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenceService.java:99)
at org.jbpm.persistence.db.DbPersistenceService.getJobSession(DbPersistenceService.java:359)
at org.jbpm.JbpmContext.getJobSession(JbpmContext.java:563)
at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:112)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58)
** END NESTED EXCEPTION **
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:699)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:1562)
at com.mysql.jdbc.Connection.<init>(Connection.java:491)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at java.sql.DriverManager.getConnection(DriverManager.java:525)
at java.sql.DriverManager.getConnection(DriverManager.java:140)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at org.jbpm.persistence.db.DbPersistenceServiceFactory.getSessionFactory(DbPersistenceServiceFactory.java:91)
at org.jbpm.persistence.db.DbPersistenceService.getSessionFactory(DbPersistenceService.java:95)
at org.jbpm.persistence.db.DbPersistenceService.getSession(DbPersistenceService.java:99)
at org.jbpm.persistence.db.DbPersistenceService.getJobSession(DbPersistenceService.java:359)
at org.jbpm.JbpmContext.getJobSession(JbpmContext.java:563)
at org.jbpm.job.executor.JobExecutorThread.acquireJobs(JobExecutorThread.java:112)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:58)
2008-5-21 11:34:48 org.hibernate.dialect.Dialect <init>
原来是mysql驱动版本不对, 下载和mysql版本对应的JDBC驱动程序,拷到正确的目录下即可。
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