I have created a JUnit test in spring with next code:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = {
"classpath:*/WEB-INF/demo-servlet.xml"})
public class CrudTestJUnit extends AbstractJUnit4SpringContextTests {
#Autowired
protected ShoppingCartDao shoppingCartDao;
#Autowired
private ApplicationContext context;
#Before
public void setUp(){
}
#Test
public void testSomething() {
System.out.println("Evo beanvoa:" + Arrays.toString(context.getBeanDefinitionNames()));
Assert.assertTrue(false);
}
}
In demo-servlet.xml i defined bean:
<bean id="shoppingCartDao" class="com.it355.hibernatecrud.dao.impl.ShoppingCartDaoImpl"></bean>
When i run JUnit test i get this error:
Error creating bean with name 'CrudTestJUnit': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: protected com.it355.hibernatecrud.dao.ShoppingCartDao CrudTestJUnit.shoppingCartDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.it355.hibernatecrud.dao.ShoppingCartDao] found for dependency:
When i delete shopping cart i get this from getBeanDefinitionNames():
Evo beanvoa:[org.springframework.context.annotation.internalConfigurationAnnotationProcessor,
org.springframework.context.annotation.internalAutowiredAnnotationProcessor,
org.springframework.context.annotation.internalRequiredAnnotationProcessor,
org.springframework.context.annotation.internalCommonAnnotationProcessor,
org.springframework.context.annotation.internalPersistenceAnnotationProcessor,
org.springframework.context.event.internalEventListenerProcessor,
org.springframework.context.event.internalEventListenerFactory,
org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor, org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor]
Here is my full demo-servlet.xml 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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--Kako bi Hibernate mogao da se poveže na bazu podataka potrebno je kreirati sesiju. To radimo u sledećem
zrnu-->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="configLocation" >
<!--Dodavanje path-a na kome se nalaze podešavanja za Hibernate -->
<value>classpath:hibernate.cfg.xml</value>
</property>
<!-- Dodavanje path-a paketa u kome se nalaze entity fajlovi na osnovu kojih
će Hibernate kreirati bazu i upisivati u nju-->
<property name="packagesToScan">
<list>
<value>com.it355.hibernatecrud.entity</value>
</list>
</property>
</bean>
<!--Transakcija se dešava između baze i programa korišćenjem Transaction Managera koji definišemo ovde
On koristi sesiju koju smo definisali iznad -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="shoppingCartDao" class="com.it355.hibernatecrud.dao.impl.ShoppingCartDaoImpl"></bean>
<bean id="persistenceExceptionTranslationPostProcessor"
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<context:component-scan base-package="com.it355.hibernatecrud" />
<mvc:annotation-driven conversion-service="conversionService" />
<tx:annotation-driven />
<mvc:default-servlet-handler />
<mvc:resources mapping="/css/**" location="/WEB-INF/css/"/>
<mvc:resources mapping="/resources/**" location="/WEB-INF/" />
<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean">
<property name="converters">
<set>
<bean class="com.it355.hibernatecrud.converter.IntegerToCategory" />
</set>
</property>
</bean>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
Am i wrong in calling configuration file or some other thing? Is there someone who had the same issue.
Also in my configuration file i have component scan configured and my application works and loads beans without any problem but JUnit is making a problem.
It seems that your XML configuration file can't be found or loaded properly, thus you aren't able to do the injections properly.
I suggest just use classpath, if your XML configuration file is within your CLASSPATH there's no need to mention WEB-INF etc'. Like this:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration("classpath:demo-servlet.xml")
public class CrudTestJUnit extends AbstractJUnit4SpringContextTests {
}
In the end i found out that Configuration from WEB-INF must be loaded like this:
#ContextConfiguration(locations = { "file:src/main/webapp/WEB-INF/demo-servlet.xml"})
Related
I would like to get a simple integration test with Tomcat and Spring 4 running, injecting a spring component and use my existing data source configuration from Tomcat. I don't want to configure my DataSource twice.
Everything, including my data source, is configured in the file WebContent/WEB-INF/application-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:task="http://www.springframework.org/schema/task"
xmlns:util="http://www.springframework.org/schema/util" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:jee="http://www.springframework.org/schema/jee" 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/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd">
<task:annotation-driven />
<!-- annotations in bean classes -->
<!-- context:annotation-config / -->
<!-- mvc:annotation-driven / -->
<context:component-scan base-package="com.mycompany.package.**" />
<jpa:repositories base-package="com.mycompany.package.**" />
<!-- <aop:aspectj-autoproxy proxy-target-class="true"/> -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="jpaDialect" ref="jpaDialect" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceUnitName" value="packagePU" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
</property>
<property name="jpaPropertyMap">
<props>
<prop key="eclipselink.weaving">false</prop>
</props>
</property>
</bean>
<bean id="jpaVendorAdapter"
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter">
<property name="generateDdl" value="false" />
<property name="showSql" value="true" />
</bean>
<bean id="jpaDialect"
class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" />
<!-- <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="validationMessageSource" ref="messageSource"/> </bean> -->
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basenames" value="i18n/messages" />
</bean>
<jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/DefaultDB" />
</beans>
I am using this tutorial http://docs.spring.io/spring/docs/current/spring-framework-reference/html/integration-testing.html#testcontext-ctx-management, but I don't fully understand how I can just run my test in the context of Tomcat that provides my DataSource.
Currently, I am this far:
#RunWith(SpringJUnit4ClassRunner.class)
#WebAppConfiguration
#ContextConfiguration(locations = { "file:WebContent/WEB-INF/application-context.xml"})
public class SimulatorTest {
#Autowired
private ShiftSimulator simulator;
#BeforeClass
public void setup() {
// ???
}
#Test
public void testShiftStart() {
System.out.println("Hello world");
}
}
Currently, I get this error when running the test
java.lang.IllegalStateException: Failed to load ApplicationContext
...
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in URL [file:WebContent/WEB-INF/application-context.xml]: Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': Invocation of init method failed; nested exception is javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
...
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource': Invocation of init method failed; nested exception is javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
...
Caused by: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
...
I fully understand that there needs to be a InitialContext, but how can I provide my test with my context that is provided by Tomcat, including my Data Source configuration? I don't want to set my data source connection credentials twice.
Solved it. Just to recap the problem: Spring tries to create the dataSource bean and fails at looking up the JNDI name - because there is no JNDI available.
So what I did for testing, I just created another XML files that overrides the bean dataSource. I ignored the file in version control and ask every developer to copy this file in place:
<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"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="com.sap.db.jdbc.Driver"
p:url="jdbc:sap://xxx:30015"
p:username="sa"
p:password="">
</bean>
</beans>
In the test class, I am providing the additional file reference that overrides dataSource so it never tries to do the failing JNDI lookup:
#RunWith(SpringJUnit4ClassRunner.class)
#WebAppConfiguration
#ContextConfiguration(locations = { "file:WebContent/WEB-INF/application-context.xml", "file:WebContent/WEB-INF/test-datasource.xml" })
public class SimulatorTest {
...
TomcatJNDI offers a comfortable solution for this problem. It's based on Tomcat's JNDI system and initializes only Tomcat's JNDI environment without starting the server. So you can access all your resources as configured in Tomcat's configuration files in tests or from within any Java SE application. Usage is simple, e. g.
TomcatJNDI tomcatJNDI = new TomcatJNDI();
tomcatJNDI.processContextXml(contextXmlFile);
tomcatJNDI.start();
DataSource ds = (DataSource) InitialContext.doLookup("java:comp/env/path/to/datasource");
Find more about it here.
I have a problem with EntityManager. When I try to use EntityManager in a dao class, I got null pointer exception. So EntityManager is not injected despite #PersistenceContext annotation.
My dao:
package com.fido.pia.dao;
import com.fido.pia.model.User;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
#Repository
public class UserDao {
#PersistenceContext
protected EntityManager entityManager;
public User save(User row) {
if(row.isNew()) {
entityManager.persist(row);
return row;
} else {
return entityManager.merge(row);
}
}
}
Servlet Config:
<?xml version="1.0" encoding="UTF-8"?>
<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:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--
Adds some default beans (HandlerAdapter, HandlerMapping, Binding Initializer...). It also turn on some annotations.
Explanation in http://stackoverflow.com/questions/28851306/spring-framework-what-is-the-purpose-of-mvcannotation-driven
WITHOUT THIS, #RequestMapping ANNOTATIONS ARE LOADED, BUT MAPPING DO NOT WORK!!
-->
<mvc:annotation-driven />
<!-- Set loading annotations from classes
<context:component-scan base-package="com.fido.pia"/>-->
<!--manual homepage-->
<mvc:view-controller path="/" view-name="home"/>
<!--view resolver-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!--static resources - request will be handeled by ResourceHttpRequestHandler-->
<mvc:resources mapping="/resources/**" location="/resources/" />
<!--database config-->
<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/pia" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<!--entity manager factory-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="com.fido.pia" />
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<!--<property name="generateDdl" value="true" />-->
<property name="showSql" value="true" />
</bean>
</property>
</bean>
<!-- Transactions -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<!-- enable the configuration of transactional behavior based on annotations -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!--Set loading annotations from classes-->
<context:component-scan base-package="com.fido.pia"/>
</beans>
Any ideas what is wrong here?
In entityManagerFactory bean definition, try this :
<property name="packagesToScan" value="com.fido.pia.*" />
This should work
I finally solve it. The problem was that I use common dependency injection to inject my dao class in controller. When I change it to DI with autowired (added #autowired to controller constructor), entity manager in dao is initialized.
So now it works, but I'm still curious about why is that change so important. I've asked new question about it.
You need to enable persistence annotations:
<context:annotation-config/>
or
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
While trying to get sessionFactory.getCurrentSession() debugger shows that sessionFactory is null. I assume Spring 3 fails to inject sessionFactory into this class although all configuration seems to be in place. How to fix it?
ServiceOrderDAO:
#Transactional
public class ServiceOrderDAO{
#Autowired
static
SessionFactory sessionFactory;
public static List<ServiceOrderEntity> search(params...){
Session localSession = sessionFactory.getCurrentSession();
...
}
}
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
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"
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
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
<context:annotation-config />
<mvc:annotation-driven/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="" />
<property name="suffix" value=".jsp" />
</bean>
<context:component-scan base-package="controller" />
<context:component-scan base-package="dao" />
<context:component-scan base-package="service" />
<context:property-placeholder location="classpath:dbConnection.properties" />
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="model" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!--<bean id="persistenceExceptionTranslationPostProcessor" class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.user}" />
<property name="password" value="${jdbc.pass}" />
</bean>
<bean id="jdbcTemplateBean" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
There are a few things I think you'll want to touch up:
SessionFactory shouldn't be static, nor should your search method be static if you're trying to treat that class as a Spring bean.
Add a #Component or #Repository annotation to the class. I don't think Spring will autowire classes that are missing a stereotype annotation on the class.
You should consider moving your #Transactional annotation to the method so you can provide more fine-grained propagation. For example, your search method may not require a transaction so you may want to use #Transactional(propagation = Propagation.SUPPORTS). Check out the Spring documentation for additional info that explains the various annotations and where/how to annotate transactions.
sessionFactory being static definitely is the cause of the problem. You can't inject static fields with spring.
Going under the covers, the static fields gets initialized by classloader, before the constructor gets called, and therefore before spring gets chance to inject anything.
And your service class should be transactional, not your dao. And yes you need to annotate with #Component or #Service or similar.
I've just started my journey with Spring, so I'm a newbie.
I'm trying to write tests to DAO.
When I run tests the stack trace returns:
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private pl.com.tt.persistence.TestEntityDaoJPA pl.com.tt.tests.TestPersistenceDAO.testEntityDaoJPA; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [pl.com.tt.persistence.TestEntityDaoJPA] 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)}
It looks like I shouldn't use #Autowired above TestEntityDAO implementation. When I delete #Autowire annotation stack trace returns error with invocation method testEntityDaoJPA.getAll(sql).
This is my test class:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration
public class TestPersistenceDAO extends AbstractTransactionalJUnit4SpringContextTests{
#Autowired
private TestEntityDaoJPA testEntityDaoJPA;
#Test
public void testDAO(){
String sql = "SELECT r FROM TestEntity r WHERE ROWNUM<200";
testEntityDaoJPA.getAll(sql);
}
}
My DAO class:
#Component
public class TestEntityDaoJPA implements TestEntityDao {
#Autowired
#PersistenceContext private EntityManager em;
#Transactional
public List<TestEntity> getAll(String sql){
TypedQuery<TestEntity> q = em.createQuery(sql, TestEntity.class );
List<TestEntity> result = q.getResultList();
return result;
}
}
XML context 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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:tx="http://www.springframework.org/schema/tx"
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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:component-scan base-package="pl.com.tt.tests" />
<context:annotation-config/>
<tx:annotation-driven/>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url"
value="jdbc:oracle:thin:#192.168.80.128:1521:orcl" />
<property name="username" value="findfnorg" />
<property name="password" value="findfnorg" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="pl.com.tt.tests" />
<property name="persistenceProviderClass"
value="org.hibernate.ejb.HibernatePersistence" />
<property name="loadTimeWeaver">
<bean
class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
</beans>
Your package is not scanned by spring.
You indicate:
<context:component-scan base-package="pl.com.tt.tests" />
But TestEntityDaoJPA is in pl.com.tt.persistence. So this package is not scanned and no bean is created.
Try to change to:
<context:component-scan base-package="pl.com.tt.tests,pl.com.tt.persistence" />
I am trying to put some initialization methods in controller's default constructor, but the problem that it never called. When I put an #Autowired annotation, the error is throuwn - Autowired annotation requires at least on argument.
What the best practice for putting some initialization code in one place except of putting it in each controller's method?
Thank you
#InitBinder
public void initBinder(WebDataBinder binder) {
try {
initialize();
Logger l = Logger.getLogger(this.getClass().getName());
l.warning("Init!!!");
} catch (Exception e) {
e.printStackTrace();
}
}
<?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/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">
<context:component-scan base-package="de.butler.crm.controller" />
<mvc:annotation-driven />
<bean id="localeChangeInterceptor"
class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
<property name="paramName" value="l" />
</bean>
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" >
<property name="interceptors">
<list>
<ref bean="localeChangeInterceptor" />
</list>
</property>
</bean>
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="de.butler.crm.resource.Resources" />
</bean>
<bean id="localeResolver"
class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
<property name="defaultLocale" value="de" />
</bean>
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="50000000"/>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
a) Controllers are just plain Spring Beans, so that all aspects of the Spring Bean lifecycle apply.
I.e. you can autowire properties or constructor parameters (with annotation support), you can initialize beans using the InitializingBean interface or a #PostConstruct method etc.
If none of this works, then there's something wrong with your setup and you'll have to post your web context xml and / or a stack trace.
b) If you need a per-request setup, then use the #InitBinder mechanism
By default life cycle of bean in spring is managed by Spring container .If you want to initialized your bean with some of your code you can do it with #postconstruct method.
You have to create listener for your bean and whenever your bean is initialized this two method will invoke #postconstruct and #predestroy so you have to use this method for doing things