EntityManager.merge() is not updating the database - jpa

Question

I am trying to update the user_info table with the new password using EntityManager.merge(), but it is not getting committed. Below is my code:
app-cofig.xml:
<!-- Application Message Bundle -->
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="/WEB-INF/messages" />
<property name="cacheSeconds" value="300" />
</bean>
<bean id="loginValidator" class="com.sbi.llms.validator.LoginValidator"/>
<bean id="loginProcessor" class="com.sbi.llms.processor.LoginProcessor">
<property name="userDao" ref="userDao"/>
</bean>
<!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
<bean id="forgetProcessor" class="com.test.ForgetPasswordProcessor">
<property name="forgetDao" ref="forgetDao"/>
</bean>
<bean name="/popup_forgot_password.html" class="com.test.ForgetPasswordController">
<property name="processor" ref="forgetProcessor"/>
<property name="commandClass" value="com.test.ForgetPasswordDTO"/>
<property name="commandName" value="btn_reset"/>
<property name="formView" value="popup_forgot_password"/>
<property name="successView" value="popup_forgot_password"/>
<property name="validator">
<bean class="com.test.LoginValidator"/>
</property>
</bean>
<bean id="myDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.OracleDriver"/>
<property name="url" value="jdbc:oracle:thin:#10.0.27.105:1521/LLMSDB1"/>
<property name="username" value="llms"/>
<property name="password" value="llms12"/>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager" p:entityManagerFactory-ref="entityManagerFactory" />
<bean id="entityManager" class="org.springframework.orm.jpa.support.SharedEntityManagerBean" p:entityManagerFactory-ref="entityManagerFactory" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="persistenceUnitName" value="cccPersistenceUnit" />
<property name="jpaDialect" ref="jpaDialect" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="databasePlatform" value="org.eclipse.persistence.platform.database.OraclePlatform"/>
<property name="showSql" value="true"/>
</bean>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
</bean>
<bean id="baseJPADao" class="com.sbi.llms.dao.jpa.BaseJPADAO">
<property name="entityManager" ref="entityManager"/>
</bean>
<bean id="userDao" class="com.sbi.llms.dao.UserDAO">
<property name="entityManager" ref="entityManager"/>
</bean>
<bean id="forgetDao" class="com.test.ForgetPasswordDAO">
<property name="entityManager" ref="entityManager"/>
</bean>
<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
persistance.xml
<?xml version="1.0" encoding="UTF-8" ?>
<persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0" xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="cccPersistenceUnit" transaction-type="RESOURCE_LOCAL"> <!-- "RESOURCE_LOCAL" -->
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<mapping-file>META-INF/LoginModel.xml</mapping-file>
<mapping-file>META-INF/eclipselink-orm.xml</mapping-file>
<class>com.sbi.llms.model.LoginModel</class>
<class>com.test.ForgetPasswordModel</class>
<properties>
<!-- Configure cache size. -->
<property name="eclipselink.cache.size.default" value="1000" />
<!-- Configure simple SQL logging for demonstration. -->
<property name="eclipselink.logging.level" value="FINE" />
<property name="eclipselink.logging.thread" value="false" />
<property name="eclipselink.logging.session" value="false" />
<property name="eclipselink.logging.exceptions" value="false" />
<property name="eclipselink.logging.timestamp" value="false" />
</properties>
</persistence-unit>
</persistence>
Here is my DAO
public class ForgetPasswordDAO {
private Vector loginResult = null;
private int resultTrue = 1;
private int resultFalse = 0;
protected EntityManager entityManager;
JpaEntityManager jpaEntityManager;
public ForgetPasswordDAO() {
}
public EntityManager getEntityManager() {
return entityManager;
}
public void setEntityManager(EntityManager entityManager) {
this.entityManager = entityManager;
}
public Integer fetchUser(ForgetPasswordModel model) throws Exception {
try {
ForgetPasswordDTO DTO ;
if(model == null) {
throw new Exception("102");
}
Integer result = 0;
String userName = model.getUser_id();
String dob = model.getDob();
System.out.println("UserDTO " + model.getUser_id() + " "
+ model.getDob());
ForgetPasswordModel forgetModel = null;
System.out.println(entityManager.isOpen()+">>");
forgetModel = entityManager.find(ForgetPasswordModel.class, model.getUser_id());
entityManager.close();
System.out.println("UserDAO " + forgetModel.getUser_id() + " DOB "
+ forgetModel.getDob()+" EMAIL_ID "+forgetModel.getEmail_id()+" PASSWORD "+forgetModel.getPasswd());
if(model.getDob().equals(forgetModel.getDob())) {
System.out.println("USER VALID , CAN PROCEED WITH PASSWORD RESET");
String passwd = GenerateRandomPassword.generateRandomPassword();
System.out.println("generated password is" +passwd);
entityManager.getTransaction().begin();
forgetModel.setPasswd(passwd);
entityManager.merge(forgetModel);
entityManager.getTransaction().commit();
System.out .println("updated password is "+forgetModel.getPasswd());
String email=forgetModel.getEmail_id();
ForgetPasswordSendMail.SendMail( email, passwd);
result=1;
}
else
{
System.out.println("USER InVALID , Please Provide Valid Data");
}
return result;
} catch (Exception e) {
throw new Exception("103", e);
}
}
}
When I run the above code I get the following error:
java.lang.IllegalStateException: Not allowed to create transaction on shared EntityManager - use Spring transactions or EJB CMT instead
org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:198)
com.sun.proxy.$Proxy6.getTransaction(Unknown Source)
com.test.ForgetPasswordDAO.fetchUser(ForgetPasswordDAO.java:81)
com.test.ForgetPasswordProcessor.execute(ForgetPasswordProcessor.java:52)
com.test.ForgetPasswordController.onSubmit(ForgetPasswordController.java:56)
org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272)
org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268)
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

Answer 1

Since you are using Spring, you need to use Spring transactions, not JPA transactions.
You need to declare the transaction in Spring, or access the EntityManager directly, not through Spring.