Error updating database. Cause:java.sql.SQLException:Access denied for user ' ${username} ' @ ' localhost ' (using Password:yes)

Importing someone else's project, an error has been made, and the user name in the Db.properties profile is inconsistent with the user name that is called in the Mybatis-conf.xml configuration file.

(The nameis used in db.properties, and the real username , or ${username}, is called), as long as the name in the configuration file is changed to username.

As follows:

org.apache.ibatis.exceptions.PersistenceException: # # # Error updating database. Cause:java.sql.SQLException:Access denied forUser'  ${username}'@'localhost' (using  password: YES) # # Cause:java.sql.SQLException:Access denied forUser'${username}'@'localhost'(usingPassword:yes) at Org.apache.ibatis.exceptions.ExceptionFactory.wrapException (Exceptionfactory.java: -) at Org.apache.ibatis.session.defaults.DefaultSqlSession.update (Defaultsqlsession.java: $) at Org.apache.ibatis.session.defaults.DefaultSqlSession.insert (Defaultsqlsession.java:185) at DbBookTest.StudentCERUDTest.add (Studentcerudtest.java: -) at Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at Sun.reflect.NativeMethodAccessorImpl.invoke (Nativemethodaccessorimpl.java: +) at Sun.reflect.DelegatingMethodAccessorImpl.invoke (Delegatingmethodaccessorimpl.java: +) at Java.lang.reflect.Method.invoke (Method.java:498) at org.junit.runners.model.frameworkmethod$1. Runreflectivecall (Frameworkmethod.java: -) at Org.junit.Internal. Runners.model.ReflectiveCallable.run (Reflectivecallable.java: A) at org.junit.runners.model.FrameworkMethod.invokeExplosively (Frameworkmethod.java: -) at Org.junit.Internal. Runners.statements.InvokeMethod.evaluate (Invokemethod.java: -) at Org.junit.runners.ParentRunner.runLeaf (Parentrunner.java:325) at Org.junit.runners.BlockJUnit4ClassRunner.runChild (Blockjunit4classrunner.java: +) at Org.junit.runners.BlockJUnit4ClassRunner.runChild (Blockjunit4classrunner.java: $) at org.junit.runners.parentrunner$3. Run (Parentrunner.java:290) at org.junit.runners.parentrunner$1. Schedule (Parentrunner.java: in) at Org.junit.runners.ParentRunner.runChildren (Parentrunner.java:288) at org.junit.runners.parentrunner.access$ the(Parentrunner.java: -) at org.junit.runners.parentrunner$2. Evaluate (Parentrunner.java:268) at Org.junit.runners.ParentRunner.run (Parentrunner.java:363) at ORG.ECLIPSE.JDT.Internal. Junit4.runner.JUnit4TestReference.run (Junit4testreference.java: the) at ORG.ECLIPSE.JDT.Internal. Junit.runner.TestExecution.run (Testexecution.java: -) at ORG.ECLIPSE.JDT.Internal. junit.runner.RemoteTestRunner.runTests (Remotetestrunner.java:538) at ORG.ECLIPSE.JDT.Internal. junit.runner.RemoteTestRunner.runTests (Remotetestrunner.java:760) at ORG.ECLIPSE.JDT.Internal. Junit.runner.RemoteTestRunner.run (Remotetestrunner.java:460) at ORG.ECLIPSE.JDT.Internal. Junit.runner.RemoteTestRunner.main (Remotetestrunner.java:206) caused By:java.sql.SQLException:Access denied forUser'${username}'@'localhost'(usingPassword:yes) at Com.mysql.jdbc.SQLError.createSQLException (Sqlerror.java:1055) at Com.mysql.jdbc.SQLError.createSQLException (Sqlerror.java:956) at Com.mysql.jdbc.MysqlIO.checkErrorPacket (Mysqlio.java:3536) at Com.mysql.jdbc.MysqlIO.checkErrorPacket (Mysqlio.java:3468) at Com.mysql.jdbc.MysqlIO.checkErrorPacket (Mysqlio.java:917) at com.mysql.jdbc.MysqlIO.secureAuth411 (Mysqlio.java:3974) at Com.mysql.jdbc.MysqlIO.doHandshake (Mysqlio.java:1282) at Com.mysql.jdbc.ConnectionImpl.createNewIO (Connectionimpl.java:2142) at Com.mysql.jdbc.ConnectionImpl.<init> (Connectionimpl.java:773) at com.mysql.jdbc.JDBC4Connection.<init> (Jdbc4connection.java: $) at Sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native Method) at Sun.reflect.NativeConstructorAcce Ssorimpl.newinstance (Nativeconstructoraccessorimpl.java: +) at Sun.reflect.DelegatingConstructorAccessorImpl.newInstance (Delegatingconstructoraccessorimpl.java: $) at Java.lang.reflect.Constructor.newInstance (Constructor.java:423) at Com.mysql.jdbc.Util.handleNewInstance (Util.java:406) at Com.mysql.jdbc.ConnectionImpl.getInstance (Connectionimpl.java:352) at Com.mysql.jdbc.NonRegisteringDriver.connect (Nonregisteringdriver.java:282) at Java.sql.DriverManager.getConnection (Drivermanager.java:664) at Java.sql.DriverManager.getConnection (Drivermanager.java:208) at Org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection (Unpooleddatasource.java:201) at Org.apache.ibatis.datasource.unpooled.UnpooledDataSource.doGetConnection (Unpooleddatasource.java:196) at Org.apache.ibatis.datasource.unpooled.UnpooledDataSource.getConnection (Unpooleddatasource.java: the) at Org.apache.ibatis.datasource.pooled.PooledDataSource.popConnection (Pooleddatasource.java:404) at Org.apache.ibatis.datasource.pooled.PooledDataSource.getConnection (Pooleddatasource.java: -) at Org.apache.ibatis.transaction.jdbc.JdbcTransaction.openConnection (Jdbctransaction.java:139) at Org.apache.ibatis.transaction.jdbc.JdbcTransaction.getConnection (Jdbctransaction.java: A) at Org.apache.ibatis.executor.BaseExecutor.getConnection (Baseexecutor.java:336) at Org.apache.ibatis.executor.SimpleExecutor.prepareStatement (Simpleexecutor.java: -) at Org.apache.ibatis.executor.SimpleExecutor.doUpdate (Simpleexecutor.java: the) at Org.apache.ibatis.executor.BaseExecutor.update (Baseexecutor.java:117) at Org.apache.ibatis.executor.CachingExecutor.update (Cachingexecutor.java: the) at Org.apache.ibatis.session.defaults.DefaultSqlSession.update (Defaultsqlsession.java:198)    ...  -More

Error updating database. Cause:java.sql.SQLException:Access denied for user ' ${username} ' @ ' localhost ' (using Password:yes)