BIRT JDBCException“从2.6升级到3.7时不能加载JDBC驱动程序类：com.mysql.jdbc.Driver”

Question

我试图在我的Tomcat服务器上升级birt-viewer的版本，但似乎我有与JDBC驱动程序的加载错误：

exception.error (1 time(s)) 
detail : org.eclipse.birt.report.engine.api.EngineException: An exception occurred during processing. Please see the following message for details: 
Cannot open the connection for the driver: org.eclipse.birt.report.data.oda.jdbc. 
    org.eclipse.birt.report.data.oda.jdbc.JDBCException: Cannot load JDBC Driver class: com.mysql.jdbc.Driver. (Element ID:1351) 
    at org.eclipse.birt.report.engine.executor.ExecutionContext.addException(ExecutionContext.java:1237) 
    at org.eclipse.birt.report.engine.executor.ExecutionContext.addException(ExecutionContext.java:1216) 
    at org.eclipse.birt.report.engine.executor.QueryItemExecutor.executeQuery(QueryItemExecutor.java:96) 
    at org.eclipse.birt.report.engine.executor.TableItemExecutor.execute(TableItemExecutor.java:62) 
    at org.eclipse.birt.report.engine.internal.executor.dup.SuppressDuplicateItemExecutor.execute(SuppressDuplicateItemExecutor.java:43) 
    at org.eclipse.birt.report.engine.internal.executor.wrap.WrappedReportItemExecutor.execute(WrappedReportItemExecutor.java:46) 
    at org.eclipse.birt.report.engine.internal.executor.l18n.LocalizedReportItemExecutor.execute(LocalizedReportItemExecutor.java:34) 
    at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:65) 
    at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:26) 
    at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:140) 
    at org.eclipse.birt.report.engine.layout.html.HTMLInlineStackingLM.resumeLayout(HTMLInlineStackingLM.java:111) 
    at org.eclipse.birt.report.engine.layout.html.HTMLInlineStackingLM.layoutNodes(HTMLInlineStackingLM.java:160) 
    at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:26) 
    at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:140) 
    at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:70) 
    at org.eclipse.birt.report.engine.layout.html.HTMLStackingLM.layoutChildren(HTMLStackingLM.java:26) 
    at org.eclipse.birt.report.engine.layout.html.HTMLTableLM.layoutChildren(HTMLTableLM.java:132) 
    at org.eclipse.birt.report.engine.layout.html.HTMLAbstractLM.layout(HTMLAbstractLM.java:140) 
    at org.eclipse.birt.report.engine.layout.html.HTMLBlockStackingLM.layoutNodes(HTMLBlockStackingLM.java:70) 
    at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:92) 
    at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:100) 
    at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doRun(RunAndRenderTask.java:180) 
    at org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run(RunAndRenderTask.java:77) 
    at org.eclipse.birt.report.service.ReportEngineService.runAndRenderReport(ReportEngineService.java:929) 
    at org.eclipse.birt.report.service.BirtViewerReportService.runAndRenderReport(BirtViewerReportService.java:973) 
    at org.eclipse.birt.report.service.actionhandler.BirtRunAndRenderActionHandler.__execute(BirtRunAndRenderActionHandler.java:76) 
    at org.eclipse.birt.report.service.actionhandler.AbstractBaseActionHandler.execute(AbstractBaseActionHandler.java:90) 
    at org.eclipse.birt.report.presentation.aggregation.layout.EngineFragment.doService(EngineFragment.java:318) 
    at org.eclipse.birt.report.presentation.aggregation.AbstractBaseFragment.service(AbstractBaseFragment.java:76) 
    at org.eclipse.birt.report.servlet.BirtEngineServlet.__doGet(BirtEngineServlet.java:120) 
    at org.eclipse.birt.report.servlet.BaseReportEngineServlet.doGet(BaseReportEngineServlet.java:185) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
    at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
    at org.eclipse.birt.report.servlet.BaseReportEngineServlet.service(BaseReportEngineServlet.java:116) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.eclipse.birt.report.filter.ViewerFilter.doFilter(ViewerFilter.java:68) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
    at java.lang.Thread.run(Thread.java:662) 
Caused by: org.eclipse.birt.report.data.adapter.api.AdapterException: An exception occurred during processing. Please see the following message for details: 
Cannot open the connection for the driver: org.eclipse.birt.report.data.oda.jdbc. 
    org.eclipse.birt.report.data.oda.jdbc.JDBCException: Cannot load JDBC Driver class: com.mysql.jdbc.Driver. 
    at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.execute(DataRequestSessionImpl.java:644) 
    at org.eclipse.birt.report.engine.data.dte.DteDataEngine.doExecuteQuery(DteDataEngine.java:158) 
    at org.eclipse.birt.report.engine.data.dte.AbstractDataEngine.execute(AbstractDataEngine.java:267) 
    at org.eclipse.birt.report.engine.executor.ExecutionContext.executeQuery(ExecutionContext.java:1939) 
    at org.eclipse.birt.report.engine.executor.QueryItemExecutor.executeQuery(QueryItemExecutor.java:80) 
    ... 47 more 
Caused by: org.eclipse.birt.data.engine.odaconsumer.OdaDataException: Cannot open the connection for the driver: org.eclipse.birt.report.data.oda.jdbc. 
    org.eclipse.birt.report.data.oda.jdbc.JDBCException: Cannot load JDBC Driver class: com.mysql.jdbc.Driver. 
    at org.eclipse.birt.data.engine.odaconsumer.ExceptionHandler.newException(ExceptionHandler.java:54) 
    at org.eclipse.birt.data.engine.odaconsumer.ConnectionManager.openConnection(ConnectionManager.java:177) 
    at org.eclipse.birt.data.engine.executor.DataSource.newConnection(DataSource.java:224) 
    at org.eclipse.birt.data.engine.executor.DataSource.open(DataSource.java:212) 
    at org.eclipse.birt.data.engine.impl.DataSourceRuntime.openOdiDataSource(DataSourceRuntime.java:217) 
    at org.eclipse.birt.data.engine.impl.QueryExecutor.openDataSource(QueryExecutor.java:407) 
    at org.eclipse.birt.data.engine.impl.QueryExecutor.prepareExecution(QueryExecutor.java:317) 
    at org.eclipse.birt.data.engine.impl.PreparedQuery.doPrepare(PreparedQuery.java:455) 
    at org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery.produceQueryResults(PreparedDataSourceQuery.java:190) 
    at org.eclipse.birt.data.engine.impl.PreparedDataSourceQuery.execute(PreparedDataSourceQuery.java:178) 
    at org.eclipse.birt.data.engine.impl.PreparedOdaDSQuery.execute(PreparedOdaDSQuery.java:145) 
    at org.eclipse.birt.report.data.adapter.impl.DataRequestSessionImpl.execute(DataRequestSessionImpl.java:624) 
    ... 51 more 
Caused by: org.eclipse.birt.report.data.oda.jdbc.JDBCException: Cannot load JDBC Driver class: com.mysql.jdbc.Driver. 
    at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.findDriver(JDBCDriverManager.java:836) 
    at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.loadAndRegisterDriver(JDBCDriverManager.java:941) 
    at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.loadAndRegisterDriver(JDBCDriverManager.java:918) 
    at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.doConnect(JDBCDriverManager.java:266) 
    at org.eclipse.birt.report.data.oda.jdbc.JDBCDriverManager.getConnection(JDBCDriverManager.java:232) 
    at org.eclipse.birt.report.data.oda.jdbc.Connection.connectByUrl(Connection.java:243) 
    at org.eclipse.birt.report.data.oda.jdbc.Connection.open(Connection.java:162) 
    at org.eclipse.datatools.connectivity.oda.consumer.helper.OdaConnection.open(OdaConnection.java:250) 
    at org.eclipse.birt.data.engine.odaconsumer.ConnectionManager.openConnection(ConnectionManager.java:165) 
    ... 61 more 

我的情况有点特殊，因为我不知道我是否做了正确地将。我解释一下自己。

我有一些与BIRT 2.6和其他一些与BIRT 3.7一起设计的报告。我已经在我的Tomcat服务器上做的是，我创建了两个库： - BIRT查看器 - BIRT-viewer3.7

我把MySQL驱动（使用mysql-connector-java的5.0.8斌。 jar）文件birt-viewer3.7/WEB-INF/lib/。

但我仍然有错误。我也试过把它放在birt-viewer3.7/WEB-INF/platform/plugins/，但错误依然存在。

首先：是否有可能使birt-viewer的两个版本共存？

如果有可能，我该如何解决这个驱动程序问题？

谢谢。

Answer 1

您是否在报表设计中配置了驱动程序？打开报告设计，双击数据源并单击管理驱动程序...按钮。

Answer 2

复制 “使用mysql-connector-java的5.0.8-bin.jar” 到 “WEB-INF \平台\插件\ org.eclipse.birt.report.data.oda.jdbc_INSTALLED_VERSION \ Drivers” 文件夹