Com.microsoft.sqlserver.jdbc.SQLServerException: User ' sa ' login failed.

Com.microsoft.sqlserver.jdbc.SQLServerException: User ' sa ' login failed.
At Com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError (sqlserverexception.java:196)
At Com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF (tdsparser.java:246)
At Com.microsoft.sqlserver.jdbc.TDSParser.parse (tdsparser.java:83)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon (sqlserverconnection.java:2532)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.logon (sqlserverconnection.java:1929)
At com.microsoft.sqlserver.jdbc.sqlserverconnection.access$000 (sqlserverconnection.java:41)
At Com.microsoft.sqlserver.jdbc.sqlserverconnection$logoncommand.doexecute (sqlserverconnection.java:1917)
At Com.microsoft.sqlserver.jdbc.TDSCommand.execute (iobuffer.java:4026)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand (sqlserverconnection.java:1416)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper (sqlserverconnection.java:1061)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.login (sqlserverconnection.java:833)
At Com.microsoft.sqlserver.jdbc.SQLServerConnection.connect (sqlserverconnection.java:716)
At Com.microsoft.sqlserver.jdbc.SQLServerDriver.connect (sqlserverdriver.java:841)
At Java.sql.DriverManager.getConnection (drivermanager.java:582)
At Java.sql.DriverManager.getConnection (drivermanager.java:185)
At Com.lzw.dao.dao.<clinit> (dao.java:40)
At Com.lzw.login.login$2.actionperformed (login.java:54)
At Javax.swing.AbstractButton.fireActionPerformed (abstractbutton.java:1995)
At Javax.swing.abstractbutton$handler.actionperformed (abstractbutton.java:2318)
At Javax.swing.DefaultButtonModel.fireActionPerformed (defaultbuttonmodel.java:387)
At javax.swing.DefaultButtonModel.setPressed (defaultbuttonmodel.java:242)
At javax.swing.plaf.basic.BasicButtonListener.mouseReleased (basicbuttonlistener.java:236)
At Java.awt.Component.processMouseEvent (component.java:6216)
At Javax.swing.JComponent.processMouseEvent (jcomponent.java:3265)
At Java.awt.Component.processEvent (component.java:5981)
At Java.awt.Container.processEvent (container.java:2041)
At Java.awt.Component.dispatchEventImpl (component.java:4583)
At Java.awt.Container.dispatchEventImpl (container.java:2099)
At Java.awt.Component.dispatchEvent (component.java:4413)
At Java.awt.LightweightDispatcher.retargetMouseEvent (container.java:4556)
At Java.awt.LightweightDispatcher.processMouseEvent (container.java:4220)
At Java.awt.LightweightDispatcher.dispatchEvent (container.java:4150)
At Java.awt.Container.dispatchEventImpl (container.java:2085)
At Java.awt.Window.dispatchEventImpl (window.java:2475)
At Java.awt.Component.dispatchEvent (component.java:4413)
At Java.awt.EventQueue.dispatchEvent (eventqueue.java:599)
At Java.awt.EventDispatchThread.pumpOneEventForFilters (eventdispatchthread.java:269)
At Java.awt.EventDispatchThread.pumpEventsForFilter (eventdispatchthread.java:184)
At Java.awt.EventDispatchThread.pumpEventsForHierarchy (eventdispatchthread.java:174)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:169)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:161)
At Java.awt.EventDispatchThread.run (eventdispatchthread.java:122)
Exception in Thread "awt-eventqueue-0" java.lang.NullPointerException
At Com.lzw.dao.Dao.getUser (dao.java:119)
At Com.lzw.login.login$2.actionperformed (login.java:54)
At Javax.swing.AbstractButton.fireActionPerformed (abstractbutton.java:1995)
At Javax.swing.abstractbutton$handler.actionperformed (abstractbutton.java:2318)
At Javax.swing.DefaultButtonModel.fireActionPerformed (defaultbuttonmodel.java:387)
At javax.swing.DefaultButtonModel.setPressed (defaultbuttonmodel.java:242)
At javax.swing.plaf.basic.BasicButtonListener.mouseReleased (basicbuttonlistener.java:236)
At Java.awt.Component.processMouseEvent (component.java:6216)
At Javax.swing.JComponent.processMouseEvent (jcomponent.java:3265)
At Java.awt.Component.processEvent (component.java:5981)
At Java.awt.Container.processEvent (container.java:2041)
At Java.awt.Component.dispatchEventImpl (component.java:4583)
At Java.awt.Container.dispatchEventImpl (container.java:2099)
At Java.awt.Component.dispatchEvent (component.java:4413)
At Java.awt.LightweightDispatcher.retargetMouseEvent (container.java:4556)
At Java.awt.LightweightDispatcher.processMouseEvent (container.java:4220)
At Java.awt.LightweightDispatcher.dispatchEvent (container.java:4150)
At Java.awt.Container.dispatchEventImpl (container.java:2085)
At Java.awt.Window.dispatchEventImpl (window.java:2475)
At Java.awt.Component.dispatchEvent (component.java:4413)
At Java.awt.EventQueue.dispatchEvent (eventqueue.java:599)
At Java.awt.EventDispatchThread.pumpOneEventForFilters (eventdispatchthread.java:269)
At Java.awt.EventDispatchThread.pumpEventsForFilter (eventdispatchthread.java:184)
At Java.awt.EventDispatchThread.pumpEventsForHierarchy (eventdispatchthread.java:174)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:169)
At Java.awt.EventDispatchThread.pumpEvents (eventdispatchthread.java:161)
At Java.awt.EventDispatchThread.run (eventdispatchthread.java:122)

Suddenly a whim, want to do a small program to use, but it was stopped by this error. I have also done the following checks:

1, confirm the link character is correct;

2, SA user in the resource manager can log in;

3. SQL Server and Windows Authentication mode have been set;

4. The peripheral configuration is configured well.

However, the "SA" will not be able to log on the issue. Behind Baidu, see there is discussion port problem, suddenly thought, there may be 1433 port is occupied by other programs. Immediately changed to 1435 (such as), sure enough to solve the problem. Now share the next, hope to help everyone!

Com.microsoft.sqlserver.jdbc.SQLServerException: User ' sa ' login failed.