Pentaho数据集成SQL连接

Question

我使用Pentaho的数据集成,我试图通过MySQL的连接到我的数据库,但是当我做我得到这个错误.....

Error connecting to database [devdb2] : org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database

Exception while loading class
org.gjt.mm.mysql.Driver


org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database

Exception while loading class
org.gjt.mm.mysql.Driver


    at org.pentaho.di.core.database.Database.normalConnect(Database.java:368)
    at org.pentaho.di.core.database.Database.connect(Database.java:317)
    at org.pentaho.di.core.database.Database.connect(Database.java:279)
    at org.pentaho.di.core.database.Database.connect(Database.java:269)
    at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:86)
    at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2464)
    at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:533)
    at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329)
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:139)
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123)
    at org.pentaho.ui.xul.swt.tags.SwtButton.access$500(SwtButton.java:26)
    at org.pentaho.ui.xul.swt.tags.SwtButton$4.widgetSelected(SwtButton.java:119)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
    at org.eclipse.jface.window.Window.open(Window.java:796)
    at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:378)
    at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:304)
    at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:115)
    at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:62)
    at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:493)
    at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:478)
    at org.pentaho.di.ui.spoon.Spoon.newConnection(Spoon.java:7770)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329)
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:139)
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123)
    at org.pentaho.ui.xul.swt.tags.SwtMenuitem.access$100(SwtMenuitem.java:27)
    at org.pentaho.ui.xul.swt.tags.SwtMenuitem$1.widgetSelected(SwtMenuitem.java:77)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1183)
    at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:6966)
    at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:567)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.pentaho.commons.launcher.Launcher.main(Launcher.java:134)
Caused by: org.pentaho.di.core.exception.KettleDatabaseException: 
Exception while loading class
org.gjt.mm.mysql.Driver

    at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:423)
    at org.pentaho.di.core.database.Database.normalConnect(Database.java:352)
    ... 50 more
Caused by: java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:414)
    ... 51 more

如果我使用SQLite作为我的连接类型它可以工作但是当我转到它时没有返回数据.所以我的问题是如何让MySQL工作或使用SQLite获取数据？

我错过了图书馆或班级吗？

Answer 1

我在尝试从Pentaho查询MySQL数据库时遇到了同样的问题.

连接到数据库[本地MySQL数据库]时出错:org.pentaho.di.core.exception.KettleDatabaseException:尝试连接数据库时出错

加载类org.gjt.mm.mysql.Driver时出现异常

通过@ user979331扩展帖子的解决方案是:

1. 下载了最新的MySQL Java连接器/驱动器
2. 解压的压缩文件(在我的情况下,它是mysql-connector-java-5.1.31.zip)

3. 复制的的.jar文件(使用mysql-connector-java的5.1.31-bin.jar),并粘贴在你的库文件夹:

   PC: C:\ Program Files\pentaho\design-tools\data-integration\lib

   Mac:/Applications/data-integration/lib

重启Pentaho(数据集成)并重新测试MySQL连接.

Answer 2

缺少驱动程序文件.

这个错误对于刚刚开始使用PDI的人来说非常普遍.

驱动程序进入PDI的\ pentaho\design-tools\data-integration\libext\JDBC.如果您在Pentaho套件中使用其他工具,则可能需要将驱动程序复制到这些工具的其他位置.作为参考,以下是一些其他设计工具的相应文件夹:

• 聚合设计器:\ pentaho\design-tools\aggregation-designer\drivers
• 元数据编辑器:\ pentaho\design-tools\metadata-editor\libext\JDBC
• 报表设计器:\ pentaho\design-tools\report-designer\lib\jdbc
• Schema Workbench:\ pentaho\design-tools\schema-workbench\drivers

如果此转换或作业将在另一个框(例如测试或生产服务器)上运行,请不要忘记在部署注意事项中包括复制jar文件并重新启动PDI或Data Integration Server.

Answer 3

事实证明我将缺少一个名为mysql-connector-java-5.1.2.jar的类,我将它添加到这个文件夹(C:\ Program Files\pentaho\design-tools\data-integration\lib)并且它与MySQL一起工作连接和我的数据和表格出现.

Answer 4

您需要下载mysql-connector-java-5.1.46.tar.gz,而不是最新版本.Pentaho使用的Driver类不包含在mysql-connector-java-8.xx.yy版本中.

Answer 5

除了这里的其他答案,这里是你如何在Ubuntu(14.04)上做到这一点:

sudo apt-get install libmysql-java

这将下载mysql-connector-java-5.x.x.jar到/usr/share/java/,我相信也会自动创建一个名为的符号链接mysql-connector-java.jar.

然后,在/your/path/to/data-integration/lib/以下位置创建符号链接:

ln -s /usr/share/java/mysql-connector-java.jar /your/path/to/data-integration/lib/mysql-connector-java.jar