记一次kettle连接mysql报错，解决方法
作者：互联网
记一次kettle连接mysql报错
错误连接数据库 [158Mysql] : org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Access denied for user 'root'@'172.16.35.56' (using password: YES)
org.pentaho.di.core.exception.KettleDatabaseException:
Error occurred while trying to connect to the database
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Access denied for user 'root'@'172.16.35.56' (using password: YES)
at org.pentaho.di.core.database.Database.normalConnect(Database.java:472)
at org.pentaho.di.core.database.Database.connect(Database.java:370)
at org.pentaho.di.core.database.Database.connect(Database.java:341)
at org.pentaho.di.core.database.Database.connect(Database.java:331)
at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:80)
at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2783)
at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:597)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:313)
at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:157)
at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:141)
at org.pentaho.ui.xul.swt.tags.SwtButton.access$500(SwtButton.java:43)
at org.pentaho.ui.xul.swt.tags.SwtButton$4.widgetSelected(SwtButton.java:137)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.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.di.ui.xul.KettleDialog.show(KettleDialog.java:80)
at org.pentaho.di.ui.xul.KettleDialog.show(KettleDialog.java:47)
at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:116)
at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:60)
at org.pentaho.di.ui.repo.RepositoryDialog$12.function(RepositoryDialog.java:170)
at org.eclipse.swt.browser.WebSite.Invoke(Unknown Source)
at org.eclipse.swt.browser.WebSite$7.method6(Unknown Source)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(Unknown Source)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(Unknown Source)
at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
at org.pentaho.di.ui.repo.RepositoryDialog.open(RepositoryDialog.java:239)
at org.pentaho.di.ui.repo.RepositoryDialog.open(RepositoryDialog.java:83)
at org.pentaho.di.ui.repo.RepositoryDialog.open(RepositoryDialog.java:79)
at org.pentaho.di.ui.repo.RepositoryDialog.openCreation(RepositoryDialog.java:253)
at org.pentaho.di.ui.repo.RepositoryConnectMenu$2.widgetSelected(RepositoryConnectMenu.java:124)
at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
at org.eclipse.swt.widgets.Display.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:1366)
at org.pentaho.di.ui.spoon.Spoon.waitForDispose(Spoon.java:8022)
at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9277)
at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:692)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)
Caused by: org.pentaho.di.core.exception.KettleDatabaseException:
Error connecting to database: (using class org.gjt.mm.mysql.Driver)
Access denied for user 'root'@'172.16.35.56' (using password: YES)
分析原因：Access denied for user ‘root’@‘172.16.35.56’ (using password: YES)说明密码不对，但是我输入的密码的确是正确的，然后我用另一台服务器去telnet mysql服务器的3306端口，出现了报错
5.7.23 T13U'r!9l{@o0KVhORmysql_native_passwordConnection closed by foreign host.
这句话说明了要链接的mysql数据库只允许其所在的服务器连接，如果别的网段或者客户端去连接，需要在mysql服务端上设置一下允许的ip权限
进入MySQL数据库，查看root权限，如果使用show grants for root;会报错:There is no such grant defined for user ‘root’ on host ‘%’，需要改成show grants for root@localhost;查看
mysql> show grants for root;
ERROR 1141 (42000): There is no such grant defined for user 'root' on host '%'
mysql>
mysql> show grants for root@localhost;
+---------------------------------------------------------------------+
| Grants for root@localhost |
+---------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION |
+---------------------------------------------------------------------+
执行授权语句，使所有ip都能登录，将localhost改成%即可
grant all privileges on *.* to 'root'@'%' identified by '密码';
修改完之后，再次使用show grants for root，就可以使用了
然后再次使用kettle进入连接
点击add
点击
选择 Database Repository，然后点击 Get Started
起一个名字，然后点击None
点击Create new Connection
选择MySQL，主机名称，数据库名称，用户名，密码
连接成功
标签：java,di,kettle,eclipse,报错,mysql,org,pentaho,swt 来源： https://blog.csdn.net/weixin_36815898/article/details/115052277