Error creating bean.Injection of autowired dependencies failed. Could not autowire - spring

Hello I´m newbie in spring mvc, i´m using #autowired but i don´t know the solution. Thx you. Sorry but my english, i´m learning it.
I have two class Empresa.java and Ldiario.java. Empresa.java it works.
UPDATE
I updated the following code but I have the same error.
app-config.xml
<!-- Hibernate Session Factory -->
<bean id="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource"/>
<property name="packagesToScan" value="com.atorresbr.springapp.**"/>
and I added a bean.
<bean id="diarioBean" class="com.atorresbr.springapp.bean.DiarioBean"/>
Error
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'diarioBean': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.atorresbr.springapp.model.Ldiario com.atorresbr.springapp.bean.DiarioBean.ldiario; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.atorresbr.springapp.model.Ldiario] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:288)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1116)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
DiarioBean.java
#ManagedBean(name="diarioBean")
#SessionScoped
#Component
public class DiarioBean {
#Autowired
private Ldiario ldiario;
#Autowired
private Ldiario selectedLdiario;
public DiarioBean(){
}
public Ldiario getLdiario() {
return ldiario;
}
public void setLdiario(Ldiario ldiario) {
this.ldiario = ldiario;
}
public Ldiario getSelectedLdiario() {
return selectedLdiario;
}
public void setSelectedLdiario(Ldiario selectedLdiario) {
this.selectedLdiario = selectedLdiario;
}
}
Ldiario.java
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table;
import java.io.Serializable;
import java.sql.Blob;
import java.util.Date;
#Entity
#Table(name = "LDIARIO2014")
public class Ldiario implements Serializable{
#Id
#Column(name = "CLAVE")
#GeneratedValue private Integer CLAVE;
#ManyToOne
#JoinColumn (name = "empresa")
private Empresa empresa;
#Column(name = "ASIENTO")
private Integer ASIENTO;
#Column(name = "ORDEN")
private Integer ORDEN;
#Column(name = "FECHA")
private Date FECHA;
app-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">
<!-- Scans the classpath of this application for #Components #Service #Repository to deploy as
beans -->
<context:component-scan base-package="com.atorresbr.springapp" />
<!-- Configures the #Controller programming model -->
<mvc:annotation-driven />
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/jdbc.properties" />
<bean id="diarioBean" class="com.atorresbr.springapp.bean.DiarioBean"/>
<!-- JDBC Data Source. It is assumed you have MySQL running on localhost port 3306 with
username root and blank password. Change below if it's not the case -->
<bean id="myDataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}"
p:username="${jdbc.username}"
p:password="${jdbc.password}"
p:validationQuery="${jdbc.validationQuery}" />
<!--
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/pizzashop"/>
<property name="username" value="root"/>
<property name="password" value=""/>
<property name="validationQuery" value="SELECT 1"/>
</bean> -->
<!-- Hibernate Session Factory -->
<bean id="mySessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="myDataSource"/>
<property name="packagesToScan" value="com.atorresbr.springapp.**"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- Hibernate Transaction Manager -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="mySessionFactory"/>
</bean>
<!-- Activates annotation based transaction management -->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

Related

Not able to getCurrentSession() from SessionFactory , Getting HibernateException

Its my first very simple Spring-Hibernate application.
i am getting this
'Could not obtain transaction-synchronized Session for current thread ' error
when i am trying to get current session from SessionFactory.
I tried following things..
used #Repository , #Transactional in my dao.
configured TransactionManager.
used # Entity on my entity class.
my root-context.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-
context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- <context:property-placeholder
location="classpath:../properties/db.properties" /> -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/hib" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.nin.entity" />
<property name="hibernateProperties">
<props>
<prop
key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.default_schema">hib</prop>
</props>
</property>
<tx:annotation-driven transaction-manager="TransactionManager" />
<bean id="TransactionManager"
class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name="prefix">
<value>/WEB-INF/view/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
My dispatcherServlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-
3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-
context-3.1.xsd">
<context:component-scan base-package="com.nin"></context:component-scan>
<mvc:annotation-driven/>
</beans>
My Dao class
package com.nin.dao;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.nin.entity.Student;
#Repository
public class DaoImpl {
#Autowired
private SessionFactory sf;
#Transactional
public void register (Student st){
sf.getCurrentSession(); //Getting Error at this line.
// Session session = sf.getCurrentSession();
// session.save(st);
}
}
lastly my entity class
package com.nin.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="student")
public class Student {
#Column(name="name")
private String name;
#Id
#Column(name="rollno")
private String rollno;
#Column(name="password")
private String password;
#Column(name="city")
private String city;
public Student(){};
//and getters and setters..
Thanks in advance and sorry for my English & representation of question.
The problem is that your Hibernate and transaction configuration is in the configuration file loaded by the ContextLoaderListener. Whereas your components are loaded by the DispatcherServlet due to the <component-scan /> in that file.
When using things like transactions those are applied through AOP. AOP is applied through post processing beans. Post processing only applies to beans in the same context, else you might get strange results.
As you haven't 2 contexts, the AOP stuff is in a different one then the actual components you want to apply AOP to.
You can either put everything in a single context or move the <context:component-scan /> to the configuration containing the transactional configuration.
Note: If you have the same <component-scan /> in the configuration file all of your components will be loaded twice and as the nearest to the component (in this case controller) is being used you have the same problem.

Could not autowire field jdbcTemplate although defined in xml context configuration file

I'am facing an error with #Autowired annotation.
UserService class contain JdbcTemplate attribute with getter/setter.
Every thing works fine if I "wire" that attribute from within context file:
<bean id="userService" class="org.tuto.service.UserServiceImpl">
<property name="jdbcTemplate" ref="jdbcTemplate" />
</bean>
but with Autowired i get this-after error message.
Can someone tell me how to inject by #Autowired with no need to configure it. Thanks in Advance.
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.springframework.jdbc.core.JdbcTemplate org.tuto.service.UserServiceImpl.jdbcTemplate; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.jdbc.core.JdbcTemplate] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true)}
UserServiceImpl.java:
package org.tuto.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.tuto.mapper.UserMapper;
import org.tuto.model.User;
#Service("userService")
#Transactional
public class UserServiceImpl implements UserService{
#Autowired
private JdbcTemplate jdbcTemplate;
public JdbcTemplate getJdbcTemplate() {
return jdbcTemplate;
}
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
this.jdbcTemplate = jdbcTemplate;
}
#Override
public List<User> findAllUsers() {
String SQL = "select * from user";
UserMapper userMapper = new UserMapper();
List<User> result = jdbcTemplate.query(SQL, userMapper);
return result;
}
#Override
public User findById(long id) {
String SQL = "select * from users where id = ?";
User result = jdbcTemplate.queryForObject(SQL, new Object[] { id }, new UserMapper());
return result;
}
}
spring-servlet.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<context:annotation-config />
<context:component-scan base-package="org.tuto" />
<!-- bean definitions go here -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/****" />
<property name="username" value="****" />
<property name="password" value="****" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<constructor-arg ref="dataSource" />
</bean>
<bean id="userService" class="org.tuto.service.UserServiceImpl">
<property name="jdbcTemplate" ref="jdbcTemplate" />
</bean>
</beans>

nullpointerexception in sessionFactory.getCurrentSession();

I get error nullpointerexception in sessionFactory.getCurrentSession();
Spring Framework 4.0
Glassfish 4.1
hibernate 4.3.6.Final
When I call Session session = sessionFactory.getCurrentSession(); i get error in glassfish server log, but setSessionFactory is set by Spring. What is wrong in my code. Please Help! :)
It's Spring #Component
package service;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ApplicationScoped;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.stereotype.Repository;
import model.Payments;
#Component
#ManagedBean(name = "paymentsService")
#ApplicationScoped
#Repository
public class PaymentsService {
private SessionFactory sessionFactory ;
public PaymentsService()
{
}
public PaymentsService(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
#Autowired
public void setSessionFactory( SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
// #Transactional
public void register(){
Session session = sessionFactory.getCurrentSession();
}
}
It's primefaces #ManagedBean
package backbean;
import java.io.Serializable;
import javax.faces.application.FacesMessage;
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.context.FacesContext;
import javax.faces.bean.SessionScoped;
import model.Payments;
import service.PaymentsService;
#ManagedBean
#ApplicationScoped
public class Paymentsbeen implements Serializable {
/**
*
*/
private static final long serialVersionUID = 7719279452314113041L;
public String register() {
paymentsService.register();
}
}
It's Spring config file
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- Enable Spring Annotation Configuration -->
<context:annotation-config />
<!-- Scan for all of Spring components such as Spring Service -->
<context:component-scan base-package="service.PaymentsService"></context:component-scan>
<!-- Create Data Source bean -->
<!--<bean id="dbDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="java:jdbc/__TestPool"/>
</bean>-->
<bean id="DataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://localhost:5432/ihomefinance" />
<property name="username" value="postgres" />
<property name="password" value="1" />
</bean>
<!-- Define SessionFactory bean -->
<bean id="hibernate3AnnotatedSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="DataSource" />
<property name="annotatedClasses">
<list>
<value>model.Payments</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
</bean>
<!-- Transaction Manager
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="hibernate3AnnotatedSessionFactory" />
</bean>-->
<bean id="PaymentsServiceID" class="service.PaymentsService">
<property name="sessionFactory" ref="hibernate3AnnotatedSessionFactory" />
</bean>
<!-- Detect #Transactional Annotation
<tx:annotation-driven transaction-manager="transactionManager" />-->
</beans>

Spring data JPA java.lang.IllegalArgumentException: Not an entity

I have created spring data JPA sample project. I used eclips for this. There are two projects, one is domain object project which has only annotated entity classes. Other project is actual spring data jpa project and it has a dependency for the project one. Actually it gets domain project entity classes via maven dependency.
Project 1 : hrm-domain
Entity class :
package com.hrm.ws.data.domain;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Table;
#Entity(name = "Employee")
#Table(name = "employee")
#Inheritance(strategy = InheritanceType.JOINED)
public class Employee {
protected long id;
protected String firstName;
protected String lastName;
/**
* Gets the value of the id property.
*
*/
#Id
#Column(name = "id", scale = 0)
#GeneratedValue(strategy = GenerationType.AUTO)
public long getId() {
return id;
}
Project 2 : hrm-ws-service
persistance-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<jpa:repositories base-package="com.hrm.ws.data.repository" />
<bean id="employeeDao" class="com.hrm.ws.data.repository.EmployeeRepositoryImpl"/>
<bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="${jdbc.generateDdl}" />
<property name="showSql" value="${jdbc.showSql}"/>
</bean>
</property>
<property name="persistenceUnitName" value="jpa.sample" />
</bean>
</beans>
So the setup for my packages is as follows:
src/main/java - contains the spring repository
src/main/resources - contains application context
src/test/java - contains unit tests
And dependency for the project 1 (hrm-domain)
My problem is when I run this project I am getting error as follows:
... 38 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeRepository': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Not an entity: class com.hrm.ws.data.domain.Employee
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:149)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1429)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:474)
... 40 more
**Caused by: java.lang.IllegalArgumentException: Not an entity: class** com.hrm.ws.data.domain.Employee
at org.hibernate.ejb.metamodel.MetamodelImpl.entity(MetamodelImpl.java:160)
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:52)
at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getMetadata(JpaEntityInformationSupport.java:61)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:145)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:83)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:66)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:146)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:120)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:39)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
... 48 more
I am wondering about this issue, because when I put domain object (Employee.java) in my spring project it self rather separate jar it works fine. This issue only happens it gives as a separate jar. If any one has experience about scenario like that please give me a help.
I also had the same problem. Mine was that I didn't supply the packagesToScan property in the entityManagerFactory bean, so Spring couldn't load the Entities. Check out the emf bean declaration in your spring configuration xml. The following is a EMF declaration I hope it could help you to get rid the error:
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="packagesToScan" value="com.hrm.ws.data.domain" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
</property>
</bean>
You're not scanning the com.hrm.ws.data.domain package for beans annotated with #Entity so the spring container has no knowledge of your entities and therefore producing an exception. Add the following lines to your persistance-context.xml config file:
<context:annotation-config />
<context:component-scan base-package="com.hrm.ws.data.domain" />
You'll also need to change your root xml element as follows so it the context elements are recognized:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
And, if you haven't already, add the spring-context dependency to your pom file.
Use one of the following option :-
context:component-scan
base-package="Your Base Package Name" in spring.xml file
set packagesToScan property on the entityManagerFactory
use persistence.xml and list all entities there.

autowire exception while trying to set up spring and jpa with hibernate adapters

I'm trying to make a project using Spring MVC and JPA but I have a problem when I'm trying to launch the app - there's an exception that looks like this (few lines of each):
exception
javax.servlet.ServletException: Servlet.init() for servlet appServlet threw exception
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
root cause
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.lovemyway.itlovers.persistence.JpaUserDao com.lovemyway.itlovers.controllers.HomeController.jpaUserDao; nested exception is java.lang.IllegalArgumentException: Can not set com.lovemyway.itlovers.persistence.JpaUserDao field com.lovemyway.itlovers.controllers.HomeController.jpaUserDao to $Proxy33
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
My code looks like this:
JpaUserDao.java
package com.lovemyway.itlovers.persistence;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.lovemyway.itlovers.domain.User;
#Repository("jpaUserDao")
#Transactional
public class JpaUserDao implements UserDao {
#PersistenceContext
private EntityManager em;
public void addUser(User user) {
em.persist(user);
}
public void removeUser(User user) {
em.remove(user);
}
public User findUserById(int id) {
return em.find(User.class, id);
}
}
servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Enables the Spring MVC #Controller programming model -->
<mvc:annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<mvc:resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by #Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="com.lovemyway.itlovers" />
<tx:annotation-driven transaction-manager="transactionManager" />
<beans:bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<property name="persistenceUnitName" value="ITlovers"/>
</beans:bean>
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/itlovers" />
<property name="username" value="root" />
<property name="password" value="root" />
<property name="initialSize" value="5" />
<property name="maxActive" value="10" />
</beans:bean>
<beans:bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="MYSQL" />
<property name="showSql" value="true"/>
<property name="generateDdl" value="false"/>
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
</beans:bean>
<beans:bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</beans:bean>
<beans:bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<beans:bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
</beans>
And the controller causing exception:
HomeController.java
package com.lovemyway.itlovers.controllers;
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import com.lovemyway.itlovers.domain.Rank;
import com.lovemyway.itlovers.domain.User;
import com.lovemyway.itlovers.persistence.JpaUserDao;
/**
* Handles requests for the application home page.
*/
#Controller
public class HomeController {
private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
#Autowired
private JpaUserDao jpaUserDao;
/**
* Simply selects the home view to render by returning its name.
*/
#RequestMapping(value = "/", method = RequestMethod.GET)
public String home(Locale locale, Model model) {
logger.info("Welcome home! the client locale is "+ locale.toString());
Date date = new Date();
DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
String formattedDate = dateFormat.format(date);
Rank r = new Rank();
r.setColor("aa");
r.setDescription("a4aa");
r.setName("ranga");
User u = new User();
u.setActive(true);
u.setAdmin(true);
u.setUsername("szaku2");
u.setEmail("aaa");
u.setPassword("aaa");
u.setRegistrationDate(date);
u.setLastLoginDate(date);
u.setRank(r);
jpaUserDao.addUser(u);
jpaUserDao.findUserById(2);
model.addAttribute("serverTime", formattedDate);
return "home";
}
}
What am I doing wrong? I'm confused by too many xml files.. If I instantiate jpaUserDao using the new Constructor (I guess I annotated it by #Repository to not do so) i got NullPointerException.
Regards,
Marcin
You should declare your fields using interfaces, not implementation classes:
#Autowired
private UserDao userDao;
In addition to the fact that it's a good design practice, in your case not doing so doesn't allow Spring to inject interface-based proxy into that field.
Interface-based proxy for JpaUserDao is created in order to provide behaviours required by #Repository and #Transactional.
You are missing a setter for your jpaUserDao.
Add the following to your HomeController:
public setJpaUserDao(JpaUserDao jpaUserDao){
this.jpaUserDao = jpaUserDao;
}

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