Hi,
im very noob on Spring, and im having problems when running my application. These are my classes:
PHP Code:public interface GreetingProvider {
public String getGreeting() ;
}
PHP Code:public class MyGreetingProvider implements GreetingProvider {
public String getGreeting() {
return "Good Morning, World!";
}
}
PHP Code:public interface MessageProvider {
public String getMessage();
public void SetGreetingProvider(GreetingProvider provider);
public GreetingProvider getGreetingProvider();
}
PHP Code:public class HelloWorldMessageProvider implements MessageProvider {
private GreetingProvider greetingProvider = null;
public String getMessage() {
return getGreetingProvider().getGreeting();
}
public void SetGreetingProvider(GreetingProvider provider) {
this.greetingProvider = provider ;
}
public GreetingProvider getGreetingProvider() {
return this.greetingProvider ;
}
}
When i try to run app throws me this error:PHP Code:<?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-3.0.xsd">
<bean id="renderer"
class="com.javapassion.examples.StandardOutMessageRenderer">
<property name="messageProvider"
ref="provider"/>
</bean>
<bean id="provider"
class="com.javapassion.examples.HelloWorldMessageProvider">
<property name="greetingProvider"
ref="greeting"/>
</bean>
<bean id="greeting"
class="com.javapassion.examples.MyGreetingProvider">
</bean>
</beans>
Words in bold, i guess where is the problem, but i do not have idea about resolve it.PHP Code:Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'renderer' defined in class path resource [beans.xml]: Cannot resolve reference to bean 'provider' while setting bean property 'messageProvider'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'provider' defined in class path resource [beans.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'greetingProvider' of bean class [com.javapassion.examples.HelloWorldMessageProvider]: Bean property 'greetingProvider' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.javapassion.examples.HelloWorldSpringWithDIXMLFile.getBeanFactory(HelloWorldSpringWithDIXMLFile.java:18)
at com.javapassion.examples.HelloWorldSpringWithDIXMLFile.main(HelloWorldSpringWithDIXMLFile.java:11)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'provider' defined in class path resource [beans.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'greetingProvider' of bean class [com.javapassion.examples.HelloWorldMessageProvider]: Bean property 'greetingProvider' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1361)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322)
... 16 more
Caused by: org.springframework.beans.NotWritablePropertyException: [B]Invalid property 'greetingProvider' of bean class [com.javapassion.examples.HelloWorldMessageProvider]: Bean property 'greetingProvider' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?[/B]
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1038)
at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:914)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:76)
at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1358)
... 24 more
What's the problem?
Many thanks!
