org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session

Exception:  com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Access denied for user ''@'localhost' to database 'school' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3421) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1247) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2775) at com.mysql.jdbc.Connection.(Connection.java:1555) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285) ...

Read more →

javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.MESSAGE

Exception:  javax.servlet.jsp.JspException: Cannot find message resources under key org.apache.struts.action.MESSAGE at org.apache.struts.taglib.TagUtils.retrieveMessageResources(TagUtils.java:1189) at org.apache.struts.taglib.TagUtils.message(TagUtils.java:1038) at org.apache.struts.taglib.TagUtils.message(TagUtils.java:1013) at org.apache.struts.taglib.bean.WriteTag.retrieveFormatString(WriteTag.java:254) at org.apache.struts.taglib.bean.WriteTag.formatValue(WriteTag.java:317) at org.apache.struts.taglib.bean.WriteTag.doStartTag(WriteTag.java:232)... Reason  :  you...

Read more →

com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Access denied for user ''@'localhost' to database 'school'

Exception:  java.lang.ClassNotFoundException: javax.transaction.Synchronization at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at org.hibernate.impl.SessionImpl.(SessionImpl.java:248) at org.hibernate.impl.SessionFactoryImpl.openSession(SessionFactoryImpl.java:627) at org.hibernate.impl.SessionFactoryImpl.openSession(SessionFactoryImpl.java:651) at org.hibernate.impl.SessionFactoryImpl.openSession(SessionFactoryImpl.java:659)... Reason  :  you...

Read more →

java.lang.ClassNotFoundException: javax.transaction.Synchronization

Exception:  com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: Access denied for user ''@'localhost' to database 'school' at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885) at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3421) at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1247) at com.mysql.jdbc.Connection.createNewIO(Connection.java:2775) at com.mysql.jdbc.Connection.(Connection.java:1555) at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285) ...

Read more →

java.lang.ClassNotFoundException: javassist.util.proxy.MethodFilter

Exception:  java.lang.ClassNotFoundException: javassist.util.proxy.MethodFilter at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) at org.hibernate.bytecode.javassist.BytecodeProviderImpl.getProxyFactoryFactory(BytecodeProviderImpl.java:49) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactoryInternal(PojoEntityTuplizer.java:207) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:185)... Reason  :  you...

Read more →

org.hibernate.HibernateException: Unable to instantiate default tuplizer

Exception:  Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]     at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:108)     at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:133)     at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:80)     at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:322)    ...

Read more →

Check element exists in javascript

Code to check if element exist of not.  You can check element exist or not with javascript by it id or name. Check Element exist in Javascript With Id : var check = document.getElementById("elementId"); if(check.length != 0) { alert('I am present'); } With Name:   var check = document.getElementsByName("elementName"); if(check.length != 0) { alert('I am present'); } Check Element exist in jQuery With Id : if ($('#elementId').length > 0) { // it exists }...

Read more →