autowire by name not working spring MVC - java

web.xml
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
my spring-mvc-servlet.xml
<context:component-scan base-package="org.app.controller" />
<mvc:resources mapping="/resources/**" location="/WEB-INF/resources/" />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
my controller: Just for illustration
#Controller
public class HomeController {
LoginService loginService;
#RequestMapping(value = "/", method = RequestMethod.GET)
public String login(Model model) {
loginService.checkLoginDetails(new LoginDetails("Svn", 1));
return "login";
}
AppplicationContext.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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" 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/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- <context:annotation-config /> -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/test"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean class="org.app.controller.HomeController" autowire="byName"></bean>
<bean id="loginDAO" class="org.app.DAOImpl.LoginDAOImpl" autowire="byName"></bean>
<bean id="loginService" class="org.app.DAOServiceImpl.LoginServiceImpl" autowire="byName"></bean>
<bean id="employeeDAO" class="org.app.DAOImpl.EmployeeDAOImpl" autowire="byName"></bean>
<bean id="employeeService" class="org.app.DAOServiceImpl.EmployeeDAOServiceImpl" autowire="byName"></bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="annotatedClasses">
<list>
<value>org.app.entity.Employee</value>
<value>org.app.entity.LoginDetails</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<!-- <context:component-scan base-package="org.infy"> <context:exclude-filter
expression="org.springframework.stereotype.Controller" type="annotation"
/> </context:component-scan> -->
<tx:annotation-driven />
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
LoginServiceImpl
public class LoginServiceImpl implements LoginService{
LoginDAO loginDAO;
#Override
#Transactional
public boolean checkLoginDetails(LoginDetails loginDetails) {
return loginDAO.checkLoginDetails(loginDetails);
}
}
Problem: My LoginDAO is null. Spring is not able to instantiate it's object using auto-wiring when done without annotation, however, works fine when I use it with annotation along with appropriate changes in ApplicationContext.xml.
My LoginService bean is getting instantiated by the component scan of dispatcher servlet context. Now when instantiating LoginServiceImpl spring should look into RootApplication context for other bean definitions however it doesn't.
I don't understand why does this happen when using #autowire with or enabling the component scan. it works fine then why not without annotation.
I'm also not sure what I'm trying to do. I was playing with Spring MVC and got stuck on this.

Please update your ApplicationContext.xml
<bean id="loginService" class="org.app.DAOServiceImpl.LoginServiceImpl" autowire="byName">
<property name="loginDAO" ref="loginDAO"> </property>
</bean>
Same thing goes for the EmployeeService and your controller as well.
<bean class="org.app.controller.HomeController" autowire="byName">
<property name="loginService" ref="loginService"> </property>
</bean>
<bean id="employeeService" class="org.app.DAOServiceImpl.EmployeeDAOServiceImpl" autowire="byName">
<property name="employeeDAO" ref="employeeDAO"> </property>
</bean>
Though I still recommend you to use annotations.

In AppplicationContext.xml you need to specify injected dependencies for your beans as element inside

Related

Dispacter Servelt xml file

I am working on project with Spring mvc and i want to use jpa features as well.
I have an 3 entity classes, their corresponding repository interfaces. I have their autowired objects in common service class. However I am facing issues while creating bean for this service class object which is used in controller.
The 3 model class are User, Appointment and Notification.
The repository interface extends CRUDRepository interface.
Service class :
#Service
public class EHealthService
{
#Autowired
UserRepository uRepo;
#Autowired
AppointmentRepository aRepo;
#Autowired
NotificationRepository nRepo;
public void registerUser(User u)
{
uRepo.save(u);
}
public boolean login(User u)
{
if(uRepo.findByemail(u.getEmail())!=null)
return true;
else
return false;
}
public List<User> getDoctorList()
{
return uRepo.findByisdoctor(true);
}
// some more functions
}
Controller class:
#Controller
public class EHealthController
{
#Autowired
EHealthService eservice;
//Some code
}
ehealth-dispacter-servlet.xml file:
<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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
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-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/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<context:component-scan base-package="com.cl3.controller" />
<context:component-scan base-package="com.cl3.model" />
<context:component-scan base-package="com.cl3.service" />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true"/>
<property name="generateDdl" value="true"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"/>
<property name="packagesToScan" value="com.cl3.model"/>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
<jpa:repositories base-package="com.cl3.model"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://localhost:5432/cl3" />
<property name="username" value="ucan" />
<property name="password" value="ucan" />
</bean>
<bean id="eservice" class="com.cl3.service.EHealthService">
<property name="uRepo" ref="uRepo"></property>
<property name="nRepo" ref="nRepo"></property>
<property name="aRepo" ref="aRepo"></property>
</bean>
<bean id="uRepo" class="com.cl3.model.UserRepository">
</bean>
<bean id="nRepo" class="com.cl3.model.NotificationRepository">
</bean>
<bean id="aRepo" class="com.cl3.model.AppointmentRepository">
</bean>
It says the class is an interface.
What will be the bean for eservice object and to enable jpa in dispacter servel xml file?
Thank you.
If you are using spring xml based configuration then add below bean's to configuration file :
<bean id="entityManagerFactoryBean" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- This makes /META-INF/persistence.xml is no longer necessary -->
<property name="packagesToScan" value="com.howtodoinjava.demo.model" />
<!-- JpaVendorAdapter implementation for Hibernate EntityManager.
Exposes Hibernate's persistence provider and EntityManager extension interface -->
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
</props>
</property>
<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/test" />
<property name="username" value="root" />
<property name="password" value="password" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactoryBean" />
Register component scanning by adding this binding annotation in xml file :
<context:component-scan base-package="com.mycompany.projectname.demo" />
If your project is spring mvc the add below binding annotation to xl file
<!-- This allow for dispatching requests to Controllers -->
<mvc:annotation-driven />
For declarative transaction management add below piece in xml file.
<tx:annotation-driven />
Basically you no need to add service bean in xml configuration file if you are enabled component scanning feature in spring.
Add required dependencies to integrate jpa with spring.
Refer this link will help you more :
https://howtodoinjava.com/jpa/spring-hibernate-jpa-configuration-example/

Could not resolve placeholder 'jwt.secret' in string value "${jwt.secret}"

I have configured the property source using the annotation:
#PropertySource(value = {"classpath:application.properties"}) but I still get error saying Could not resolve placeholder 'jwt.secret' in string value
#PropertySource(value = {"classpath:application.properties"})
public class JwtAuthenticationTokenFilter extends AbstractAuthenticationProcessingFilter {
#Value("${jwt.header}")
private String tokenHeader;
public JwtAuthenticationTokenFilter() {
super("/**");
}
}
dispatcher-servlet:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-4.1.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="com.rsc."/>
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/"/>
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<list>
<value>classpath:validation</value>
</list>
</property>
</bean>
<!-- <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:application.yml</value>
</list>
</property>
</bean>-->
<!-- <security:authentication-manager alias="authenticationManager">
<security:authentication-provider user-service-ref="userDetailsServiceImpl">
<security:password-encoder ref="encoder"></security:password-encoder>
</security:authentication-provider>
</security:authentication-manager>-->
<!--<bean id="userDetailsServiceImpl" class="com.rsc.service.UserDetailsServiceImpl"></bean>-->
<bean id="JwtAuthenticationTokenFilter" class="com.rsc.security.JwtAuthenticationTokenFilter">
<property name="authenticationManager" ref="authenticationManager" />
<property name="authenticationSuccessHandler" ref="jwtAuthenticationSuccessHandler" />
</bean>
<security:authentication-manager alias="authenticationManager">
<security:authentication-provider ref="jwtAuthenticationProvider" />
</security:authentication-manager>
<bean id="encoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder">
<constructor-arg name="strength" value="11"/>
</bean>
<!-- Configure the data source bean -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<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>
<!-- Configure the entity manager factory bean -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="packagesToScan" value="com.rsc.model"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hbm2ddl.auto">create</prop>
<prop key="hibernate.id.new_generator_mappings">false</prop>
</props>
</property>
</bean>
<!-- Configure the transaction manager bean -->
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<!-- Enable annotation driven transaction management -->
<tx:annotation-driven/>
<jpa:repositories base-package="com.rsc.repository"/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
Application properties:
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/rs_education
jdbc.username=admin
jdbc.password=admin
jwt:
header: Authorization
secret: my-very-secret-key
logging:
level:
org.springframework.security: DEBUG
server:
port: 8888
spring:
resources:
chain:
enabled: true
management:
security:
enabled: true # set to false to disable 'default' Spring Boot security
If you want to use yaml your file should be called application.yml and you can use this format.
jwt:
header: Authorization
secret: my-very-secret-key
If you want to use properties style format your file should be called application.properties and you use the following format:
jwt.header=Authorization
jwt.secret=my-very-secret-key
As documentation states, you could use YAML, but you have to call your file application.yml instead of application.properties.
You also have to add snakeyaml to your dependencies.
I found a new detail: if you use multi module, then this properties will write in main yaml/properties. Do not use module's yaml/properties. It cannot be scanned.
It should be below;
#PropertySource(value = {"classpath:application.yml"})
public class JwtAuthenticationTokenFilter extends AbstractAuthenticationProcessingFilter {
#Value("${jwt.header}")
private String tokenHeader;
public JwtAuthenticationTokenFilter() {
super("/**");
}
}
fixed anotation.
#PropertySource(value = {"classpath:application.yml"})

Spring Hibernate session issue

Hi I'm having a problem setting up hibernate on spring. I was able to make it work but it creates a lot of session on the database. From What i have notice it creates session for every bean on my spring.xml. Since I have 6 beans declared I also have 6 session on the database on application start Here is my code
<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"
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"
xmlns:tx="http://www.springframework.org/schema/tx"
>
<!-- Uncomment and add your base-package here: <context:component-scan base-package="org.springframework.samples.service"/> -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:" />
<property name="username" value="Use" />
<property name="password" value="Pass" />
</bean>
<!-- Hibernate 4 SessionFactory Bean definition -->
<bean id="hibernate4AnnotatedSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.model" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibernate.current_session_context_class">thread</prop>
<!-- <prop key="hibernate.current_session_context_class">managed</prop> -->
<prop key="hibernate.show_sql">true</prop>
<prop key="format_sql">true</prop>
</props>
</property>
</bean>
<bean id="PDao" class="com.PDaoImpl">
<property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</bean>
<bean id="PService" class="com.PServiceImpl">
<property name="pDao" ref="PDao" />
</bean>
<bean id="MNDao" class="com.MNDaoImpl">
<property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</bean>
<bean id="MNService" class="com.MNServiceImpl">
<property name="MNDao" ref="MNDao" />
</bean>
<bean id="SWDao" class="com.SWDaoImpl">
<property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</bean>
<bean id="SWService" class="com.SWServiceImpl">
<property name="SWDao" ref="SWDao" />
</bean>
You need to use transactionManager to manage session for you.
Add the following lines of code to your spring.xml
....
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="yourSessionFactory" />
</bean>
....
Then you have to annotate your service impl classes #Transactional("transactionManager") to make transactionManager managing transactions through session
#Transactional("transactionManager")
public class PServiceImpl implements PServiceImpl{
....
Just an advice you can replace XML config for the DI by annotations to make it easy
in spring.xml, remove all your beans declarations (xxservice and xxxdao) and replace them by: <context:component-scan base-package="put here the package where your services and daos are lacated" />
your service must look like this :
#Service
#Transactional("transactionManager")
public class XXXServiceImpl implements XXXService{
#Autowired
private XXXDAO xxxDAO;
...
}
And your dao must look like :
#Repository
public class XXXDAOImpl implements XXXDAO {
#Autowired
private SessionFactory sessionFactory;
...
}
One more thing, add the tx schema in your file config header, your spring.xml should look like this :
<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:util="http://www.springframework.org/schema/util"
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">

Difficulty Using Spring in a JAR With Hibernate

I am attempting to split out the Hibernate DAO and Model Object layer from an existing application so they can be used across multiple applications. Unfortunately, I'm not having much success: a NoSuchBeanDefinitionException is thrown when trying to get the SessionFactory from the Application Context.
All of DAO classes extend a class called GenericDaoHibernate2. Each DAO extends this, and passes a Class in the constructor. Pretty standard Generic DAO stuff.
I figured this would be the logical place to set the session factory as well (there are ALOT of DAO classes). So, in the constructor class, I did this:
public GenericDaoHibernate2(final Class<T> persistentClass) {
ctx = new ClassPathXmlApplicationContext("META-INF/applicationContext-dao.xml");
this.sessionFactory = (SessionFactory) ctx.getBean(SessionFactory.class);
log.debug("Value of app context: " + ctx.toString());
log.debug("Value of sessionFactory: " + sessionFactory);
this.persistentClass = persistentClass;
}
Unfortunately, this blew up with the previously mentioned exception:
Caused By: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [org.hibernate.SessionFactory] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:924)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:793)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:707)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:551)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
Truncated. see log file for complete stacktrace
I've also attempted this with the app context file just in the classpath, setting the value when declaring the variable, etc, etc.
I'm guessing what is happing is that as part of the Maven build, the jar isn't referencing the libraries on the classpath, but I really don't know...
UPDATE: Stupid, stupid me... forgot to show the application context file.
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="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
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"
default-lazy-init="true">
<tx:annotation-driven transaction-manager="transactionManager" />
<context:component-scan base-package="org.jason.dao.hibernate" />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:#//192.168.1.1/db01" />
<property name="username" value="USER" />
<property name="password" value="PASSWORD" />
</bean>
<!-- Hibernate SessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibername.format_sql">true</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.jdbc.use_get_generated_keys">true</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">true</prop>
<prop key="hibernate.default_catalog">CATALOG</prop>
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory
</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>org.jason.model</value>
</list>
</property>
</bean>
</beans>
Another update: Was asked for a sample DAO. The interface is a "standard" generic interface, accepting the generic paramters T and PK, just like the Impl. The following one doesn't have any specific methods other than what it inherits from GenericDaoHibernate2.
#Repository("AreaOfPreferenceDAO")
public class HibernateAreaOfPreferenceDAO extends GenericDaoHibernate2<AreaOfPreference, AreaOfPreferenceCompositeId> implements AreaOfPreferenceDAO {
public HibernateAreaOfPreferenceDAO()
{
super(AreaOfPreference.class);
}
}
In order to wire in the SessionFactory into your custom generic DAO, you can go ahead and simply use #Autowire, as long as the overall Spring context is defining the SessionFactory bean.
To define the bean:
<bean id="sessionFactory" class=
"org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="org.rest" />
<property name="hibernateProperties">
...
</property>
</bean>
<bean id="dataSource" class=
"org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driverClassName}" />
<property name="url" value="${url}" />
<property name="username" value="restUser" />
<property name="password" value="restmy5ql" />
</bean>
And to wire, simply:
#Autowired
SessionFactory sessionFactory;
The right place to bootstrap the context is not in the constructor of your DAO; if you're working with a web application, you can go with the traditional approach:
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/dispatcher-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Since this is not a web application, then the context cannot be bootstrapped in web.xml; however, the bootstrapping still needs to be external - a main class would simply need to create the XmlWebApplicationContext and configure it.
Hope this helps.
The fact that you are creating a new application context in each DAO object may be getting you into trouble.
ctx = new ClassPathXmlApplicationContext("META-INF/applicationContext-dao.xml");
This is kind of circular if you think about it. You call the context, which does a component scan for DAO's, then the DAO instantiates a new context, which does a component scan for DAO's ...
I would just autowire the sessionfactory directly as someone else had mentioned.
#Repository("AreaOfPreferenceDAO")
public class HibernateAreaOfPreferenceDAO extends GenericDaoHibernate2<AreaOfPreference, AreaOfPreferenceCompositeId> implements AreaOfPreferenceDAO {
#Autowired
public HibernateAreaOfPreferenceDAO(SessionFactory sessionFactory)
{
super(sessionFactory, AreaOfPreference.class);
}
}
No component should need to construct a new application context.
Had the same problem, unable to make injection work.
My problem was "sequence". Hibernate xml must be invoked first.
dispatcher-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:p="http://www.springframework.org/schema/p"
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-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<!-- init hibernate first -->
<import resource="classpath:HibernateContext.xml"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/" />
<property name="suffix" value=".jsp" />
</bean>
<mvc:annotation-driven />
<context:component-scan base-package="com.xxx.yyy" />
content of hibernateContext.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:database.properties</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.xxx.yyy.model" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- bean id="transactionManager" class=" org.springframework.transaction.jta.JtaTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean-->

Why is my spring bean which is injected properly on server start up, null when I post my form to the controller?

Why is my spring bean (loginInfoDAO) which is injected properly on server start up, null when I post my form to the controller? I have stepped through the setters on start up and they are injecting properly. However, I run the get method and then the post method and the values that were injected are null. Why would this happen?
Controller
#Controller
#RequestMapping("/login")
public class LoginController extends BaseController{
private LoginInfoDAO loginInfoDAO;
public void setLoginInfoDAO(LoginInfoDAO loginInfoDAO) {
this.loginInfoDAO = loginInfoDAO;
}
#RequestMapping(method=RequestMethod.GET)
public ModelAndView getLogin(#ModelAttribute("user") final User ur) {
ModelAndView mav = new ModelAndView("/login/login");
return mav;
}
#RequestMapping(method=RequestMethod.POST)
public ModelAndView login(#ModelAttribute("user") final User ur) {
loginInfoDAO.login(ur);
ModelAndView mav = new ModelAndView();
return mav;
}
}
application-context.xml
<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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-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/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<bean id="myDataSource"
class="org.apache.tomcat.dbcp.dbcp.BasicDataSource">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://localhost/databasename</value>
</property>
<property name="username">
<value>databaseusername</value>
</property>
<property name="password">
<value>databasepassword</value>
</property>
<!-- Disable the second-level cache -->
<!-- Echo all executed SQL to stdout -->
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="myDataSource" />
<property name="annotatedClasses">
<list>
<value>com.projectname.model.LoginInfo</value>
<value>com.projectname.model.User</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="myLoginInfoDAO" class="com.projectname.dao.LoginInfoDAOImpl">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean name="/login" class="com.projectname.controllers.LoginController" >
<property name="loginInfoDAO" ref="myLoginInfoDAO" />
</bean>
</beans>
spring-servlet.xml
<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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-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/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:annotation-config />
<context:component-scan
base-package="com.projectname" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<value>/WEB-INF/messages/messages</value>
</property>
<property name="cacheSeconds" value="60" />
<property name="defaultEncoding" value="UTF-8" />
</bean>
</beans>
Add #Autowired for loginInfoDAO since you are using context:annotation-config.
#Autowired
private LoginInfoDAO loginInfoDAO;
Then remove the following entries from your context xml (since they are driven with the annotation here).
<bean id="myLoginInfoDAO" class="com.projectname.dao.LoginInfoDAOImpl">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean name="/login" class="com.projectname.controllers.LoginController" >
<property name="loginInfoDAO" ref="myLoginInfoDAO" />
</bean>
This should get you going.

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