Ржевский Дмитрий Rzhevskiy Dmitry

Swing+Spring (eng)

Today, in my company, we create simple test program to investigate how integrate spring and Swing. We find "bug"

There simpliest config:

<?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-2.5.xsd"> 
 
    <bean id="mainFrame" class="javax.swing.JFrame"> 
        <property name="title" value="Swing+Spring"/> 

        <property name="size" ref="dim"/> 
 
    </bean> 
    <bean name="dim" class="java.awt.Dimension"> 

        <constructor-arg value="400"/> 
        <constructor-arg value="300"/> 
    </bean> 
</beans> 





rise exception 

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mainFrame' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.awt.Dimension] for property 'size'; nested exception is java.lang.IllegalArgumentException: Original must not be null
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:480)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:729)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:381)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    at ru.pronto.test.App.main(App.java:11)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
Caused by: org.springframework.beans.TypeMismatchException: Failed to convert property value of type [java.awt.Dimension] for property 'size'; nested exception is java.lang.IllegalArgumentException: Original must not be null
    at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:391)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1288)
.......

If property size replace by minimumSize program work correct.
After reading spring sources I understand that size
is not correct Java beans property.
Introspector.getBeanInfo(JFrame.class).getPropertyDescriptors()
return empty descriptor

test project tou can download there

Posted at 08:00PM июл 25, 2008 by Дима in Java  |  Комментарии[0]