Consider the following configuration
public class MainApp {
public static void main(String args[]){
ApplicationContext ac=new ClassPathXmlApplicationContext("src/Beans.xml");
HelloWorld obj1=(HelloWorld) ac.getBean("helloWorld");
obj1.setMessage("OBJ1");
HelloWorld obj2=(HelloWorld) ac.getBean("helloWorld");
//obj2.setMessage("OBJ2");
System.out.println(obj1.getMessage());
System.out.println(obj2.getMessage());
}
}
#Scope("prototype")
public class HelloWorld {
String message;
public String getMessage() {
return "Your Message:"+message;
}
public void setMessage(String message) {
this.message = message;
}
}
<?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"
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-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="SpringDemo.src" />
<bean id="helloWorld" class="src.HelloWorld">
</bean>
</beans>
If i am not wrong it is showing the behavior of a Singleton scope. can someone let me know why it is not behaving as a "Prototype" scope?
You have this <bean id="helloWorld" class="src.HelloWorld"> in the xml configuration. When no scope is specified the scope defaults to singleton. The xml configuration overrides the annotation. Remove #Scope("prototype") and add scope="prototype" in the xml.
Related
In a test class I have a static
.
.
.
#BeforeClass
public static void setUpBeforeClass() throws Exception {
//Set utility beans property
// Not a System property.
}
At this point, How do i initialize or set the property of a bean ?
Thanks
If you want to setup in setUpBeforeClass() method, this is impossible. But if you just want to setup it and you're using xml configuration this is an other way.
Generally speaking, you need to create an applicationContext.test.xml which overide the applicationContext.xml. Use it in JUnit instead of applicationContext.xml
For e.g. here is your applicationContext.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"
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">
<context:annotation-config />
<bean name="utilBean" class="UtilBean">
<property name="prop1" value="1"/>
</bean>
<bean name="anotherBean" class="AnotherBean">
<property name="propAnother" value="10"/>
</bean>
</beans>
For setting the 'prop1' with 2 in 'utilBean', you should create a new applicationContext.test.xml like this:
<?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"
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">
<!-- import the original one -->
<import resource="classpath*:applicationContext.xml" />
<!-- Override utilBean -->
<bean name="utilBean" class="UtilBean">
<!-- Override prop1 value -->
<property name="prop1" value="2"/>
</bean>
</beans>
Then in your JUnit class, use applicationContext.test.xml instead of applicationContext.xml
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = { "classpath*:applicationContext.test.xml" })
public class JunitTest {
// your tests
}
Your prop1 value of utilBean is set with '2' in your JunitTest, but in your original process it will always be '1'
You can also use antoherBean in your JUnit, it's 'propAnother' value equals to 10, both in JUnit and in original process.
Sorry I didn't saw comments... In your case, override the configuration in this way:
#Import(ApplicationContext.class)
#Configuration
public class TestApplicationContext {
...
}
Then override your bean. Use this configuration class instead of the original one in your JUnitClass
In your test class declaration:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration
public class MyTest {
//... your tests
#Configuration
public static class Config {
//your configuration for the test
}
} // end of test class
After a lot of time waste trying to find a answer, I decided to post this doubt.
I have a class that I would like to intercept by the Spring AOP.
ObjectToBeProxied.java
package com.ee.beans;
#Service
#Component
#Transactional
public ObjectToBeProxied implements IObjectToBeProxied {
#Autowired
private ParameterValueService parameterValueService;
public void doStuff() {
// do something before the call
getSelfRef().findEventParameterValue(new ParameterValueFilter());
// do something after
}
#HandleException
private Boolean findEventParameterValue(ParameterValueFilter parameterValueFilter) {
ParameterValue parameterValue = getSelfRef().parameterValueService.findParametertValueByFilter(parameterValueFilter);
return parameterValue.value();
}
private ObjectToBeProxied getSelfRef() {
return (ObjectToBeProxied) AopContext.currentProxy();
}
}
ExceptionHandlerAspect.java
package com.ee.aspects;
#Component
public class ExceptionHandlerAspect {
private static Logger LOGGER = Logger.getLogger(ObjectToBeProxied.class);
public Object handleAround(ProceedingJoinPoint joinPoint) throws Throwable {
// Handling the exception. Need to continue either the method throws a expcetion
// but it need to be logged
try {
return joinPoint.proceed();
} catch (Exception e) {
// something to handle the exception
}
return null;
}
}
Spring AOP configuration:
<?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: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.xsd">
<aop:aspectj-autoproxy expose-proxy="true" proxy-target-class="true"/>
<!-- Activates various annotations to be detected in bean classes -->
<context:annotation-config/>
<context:spring-configured />
<!-- Scans the classpath of this application for #Components to deploy as beans -->
<context:component-scan base-package="com.ee.beans"/>
<bean id="exceptionHandlerAspect" class="com.ee.aspects.ExceptionHandlerAspect" />
<aop:config>
<aop:aspect id="exceptionHandlerConfig" ref="exceptionHandlerAspect">
<!-- Trata exceções lançadas -->
<aop:pointcut id="exceptionHandlerAroundMethod" expression="execution(* com.ee.beans.ObjectToBeProxied.*(..)) && #annotation(com.ee.exceptions.HandleException)" />
<aop:around pointcut-ref="exceptionHandlerAroundMethod" method="handleAround" />
</aop:aspect>
</aop:config>
When I call the method ObjectToBeProxied.doStuff(), ObjectToBeProxied.parameterValueService autowired is ok, not null.
But, when the aspect intercept the method call ObjectToBeProxied.findEventParameterValue(..) and execute the ExceptionHandlerAspect.handleAround(..), the ObjectToBeProxied.parameterValueService is not ok, it's null.
Debugging it, I can figure out that the Spring Aspect return the ObjectToBeProxied proxy after intercept it, but without the autowired attributes objects.
Where am I getting wrong?
I'm developing a module on an OSGi application, using Spring MVC and Virgo Webserver.
On my module I have a Controller, that access a Manager, which has a list of handlers that are responsible for handling report generation.
Everything was doing fine until I had to call a transactional method from an external service. Since none of my classes were transactional I had to add the references to the transation manager and annotation-driven. Then, my Manager stopped being notified.
I understand that when using annotation-driven all my beans must implement a public interface in order for the proxying mechanism to work. And as far as I know, all the classes are (one of them wasn't, but then I changed it).
My configuration files are:
bundle-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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:annotation-config />
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="reportManager" class="reportmodule.manager.impl.ReportManagerImpl"/>
<bean id="mvpepReportHandler" class="reportmodule.manager.impl.MVPEPReportHandler"/>
<bean id="reportConfigDao" class="reportmodule.repository.impl.ReportConfigurationHibernateDAOImpl"/>
<bean id="oSGIChangeReportHandler" class="reportmodule.osgi.impl.OSGIChangeReportHandlerImpl"/>
<bean id="reportController"
class="reportmodule.controller.impl.ReportControllerImpl"/>
<bean id="reportControllerHandlerMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<value>/module/reportController/**=reportController</value>
</property>
<property name="alwaysUseFullPath" value="true"></property>
</bean>
</beans>
and my bundle-osgi.xml is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:osgi="http://www.springframework.org/schema/osgi"
xmlns:osgi-compendium="http://www.springframework.org/schema/osgi-compendium"
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-3.0.xsd
http://www.springframework.org/schema/osgi
http://www.springframework.org/schema/osgi/spring-osgi.xsd
http://www.springframework.org/schema/osgi-compendium
http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium-1.2.xsd">
<osgi:reference id="transactionManager" interface="org.springframework.transaction.PlatformTransactionManager" />
<osgi:reference id="sessionFactory" interface="org.hibernate.SessionFactory" />
<osgi:reference id="smaCoreUtilService" interface="core.util.service.SmaCoreUtilService" />
<osgi:service ref="reportControllerHandlerMapping"
interface="org.springframework.web.servlet.HandlerMapping"
context-class-loader="service-provider"
auto-export="interfaces"/>
<osgi:service interface="reportmodule.api.manager.ReportManager" ref="reportManager" auto-export="interfaces"/>
<osgi:service interface="reportmodule.api.manager.ReportHandler" ref="mvpepReportHandler" auto-export="interfaces"/>
<osgi:service interface="reportmodule.repository.ReportConfigurationDAO" ref="reportConfigDao" auto-export="interfaces"/>
<osgi:service interface="reportmodule.osgi.OSGIChangeReportHandler" ref="oSGIChangeReportHandler" auto-export="interfaces"/>
<osgi:list cardinality="0..N" id="reportHandler" interface="reportmodule.api.manager.ReportHandler" greedy-proxying="true">
<osgi:listener ref="oSGIChangeReportHandler" bind-method="register" unbind-method="unregister"/>
</osgi:list>
</beans>
So, after all the services are being published the oSGIChangeReportHandler.register is called (I'm able to debbug it):
#Service(value="oSGIChangeReportHandler")
public class OSGIChangeReportHandlerImpl implements OSGIChangeReportHandler {
private ReportManager reportManager;
/**
* #param reportManager the reportManager to set
*/
#Autowired
public void setReportManager(ReportManager reportManager) {
this.reportManager = reportManager;
}
#SuppressWarnings("rawtypes")
public void register(ReportHandler reportHandler, Map properties) {
reportManager.addReportHandler(reportHandler);
}
#SuppressWarnings("rawtypes")
public void unregister(ReportHandler reportHandler, Map properties) {
reportManager.removeReportHandler(reportHandler);
}
}
And although the debugger shows Proxies for both the reportManager and reportHandler on the register method, the debugger does not halts on the ReportManagerImpl.addReportHandler method:
#Service(value="reportManager")
#Transactional(propagation = Propagation.MANDATORY, rollbackFor = Exception.class)
public class ReportManagerImpl implements ReportManager {
private ReportConfigurationDAO reportConfigurationDAO;
private ArrayList<ReportHandler> reportHandlers = new ArrayList<ReportHandler>();
/**
* #param reportConfigurationDAO the reportConfigurationDAO to set
*/
#Autowired
public void setReportConfigurationDAO(ReportConfigurationDAO reportConfigurationDAO) {
this.reportConfigurationDAO = reportConfigurationDAO;
}
#Override
#Transactional
public InputStream gerarRelatorio(ReportRequest repoReq) throws NegocioException {
// Generates the report...
}
/* (non-Javadoc)
* #see reportmodule.api.manager.ReportManager#addReportHandler(reportmodule.api.manager.ReportHandler)
*/
#Override
public void addReportHandler(ReportHandler handler) {
if (handler != null) {
this.reportHandlers.add(handler);
}
}
/* (non-Javadoc)
* #see reportmodule.api.manager.ReportManager#removeReportHandler(reportmodule.api.manager.ReportHandler)
*/
#Override
public void removeReportHandler(ReportHandler handler) {
if (handler != null) {
this.reportHandlers.remove(handler);
}
}
}
I must stress that when I remove the tx:annotation-driven tag from the bundle-context.xml file, everything works fine (the handler is properly added to the list during startup).
So, what am I missing here?
Problem solved!
As you can see on my code above, I was defining the beans both via XML and Annotation, thus every bean was duplicated in runtime. Then, when I added the tx:annotation-driven tag the application begun intercepting the wrong bean. It was indeed notifying a bean, but an orphan bean.
Here´s an example working with tx. Look this line:
xmlns:tx="http://www.springframework.org/schema/tx"
and this on schemaLocation:
http://www.springframework.org/schema/tx/spring-tx.xsd
Source:
http://www.springbyexample.org/examples/hibernate-transaction-annotation-config.html
I am working on a Spring Project:Common that uses a combination of Annotaions and Spring IOC in XML.
I have a common.jar which contains Common classes used by various projects.
And I have another Spring Project:WebService that refers to the beans defined in common.jar.
For some reason beans marked with #Component Annotation in Common.jar are not being picked up by my WebService Project. But all beans defined using <bean id="" class="" /> in Common.jar were picked up.
Below are the code for all files that have necessary configuration. Would really appreciate your help. Thanks in advance.
In Common.jar, applicationContext.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:aop="http://www.springframework.org/schema/aop"
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/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
<import resource="springConfig/app/AppServices.xml"/> <!-- Beans in this file were loaded. -->
<context:annotation-config/>
<context:component-scan base-package="com.ipd.app1"/> <!-- Beans for all classes under app1 package were NOT loaded -->
</beans>
In Common.jar, AppServices.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="inquireOrderApp" class="com.ipd.app.inquireOrderDetail.InquireOrderDetailAppImpl"/>
</beans>
Common.jar, com.test.app.MyClass
package com.ipd.app1;
#Component("createOrderApp")
public class CreateOrderAppImpl implements CreateOrderApp {
#Override
public CreateOrderResponse processMSSOrder(TransactionContext tx,
CreateOrderRequest createOrderRequest)
throws ApplicationException, Exception {
System.out.println("In App Layer Class CreateOrderAppImpl to ProcessOrder.");
return response;
}
}
WebService Project, IpdService_IPDSoapHTTPPortImpl.java
#WebService(portName = "IpdSoapHTTPPort", serviceName = "IpdService", targetNamespace = "http://ipd.com/ipdIpdweb/", wsdlLocation = "/wsdls/Ipd.wsdl", endpointInterface = "com.ipd.ipdIpdweb.IpdPortType")
#BindingType("http://schemas.xmlsoap.org/wsdl/soap/http")
public class IpdService_IpdSoapHTTPPortImpl implements IpdPortType {
ApplicationContext ctx;
public IpdService_IpdSoapHTTPPortImpl() {
this.ctx = AppContext.getCtx();
}
#Override
public void createOrder(WSHeader wsHeader,
CreateOrderRequest createOrderRequest,
Holder<WSResponseHeader> wsResponseHeader,
Holder<CreateOrderResponse> createOrderResponse)
throws WSException {
CreateOrderApp createOrderApp = (CreateOrderApp) ctx.getBean("createOrderApp");
res = createOrderApp.processOrder(tx, createOrderRequest);
res.setResponseCode(BigInteger.valueOf(0));
res.setResponseMessage("Success");
.....
}
}
Please let me know if you need see the code for any other file.
Well add this to applicationContext.xml
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
i wrote this app with eclipse and it works. But when i deploy it as standalone/console application, it cannot find StartApp bean i've injected.
here's the codes:
main app:
#Component
public class StartApp {
#Autowired
private Processor proc;
public StartApp() {
System.out.println("Starting App!");
}
private void say() {
proc.say();
}
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
StartApp app = ctx.getBean(StartApp.class);
app.say();
}
}
service:
#Service
public class Processor {
public Processor() {
System.out.println("Processor initialized!");
}
public void say() {
System.out.println("hello!");
}
}
and applicationContext.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:p="http://www.springframework.org/schema/p"
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">
<context:component-scan base-package="test.spring.desktop"/>
</beans>
i did put all spring libraries and logger including slf4j libraries.
and for console command i put these:
java -cp lib/*:lib/spring-3.1/*:test-spring-desktop.jar test.spring.desktop.StartApp
then i got these error message:
Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [test.spring.desktop.StartApp] is defined: expected single bean but found 0:
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:271)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1101)
at test.spring.desktop.StartApp.main(StartApp.java:24)
Try to put in applicationCntext.xml this configuration:
<context:annotation-config />