Question

我使用 ClassPathXmlApplicationContext 来读取我的xml。但在执行时，我收到了错误，如下所述。我还检查了文件名，并且还使用 XmlBeanFactory 函数执行了相同的程序，该函数返回所需的输出

这是我的代码

  package org.lalit.springsession;

  import org.springframework.beans.BeansException;
  import org.springframework.beans.factory.BeanFactory;
  import org.springframework.beans.factory.NoSuchBeanDefinitionException;
  import org.springframework.beans.factory.xml.XmlBeanFactory;
  import org.springframework.context.support.ClassPathXmlApplicationContext;
  import org.springframework.core.io.FileSystemResource;

  public class DrawingApp {

public static void main(String[] args) {
    // TODO Auto-generated method stub



         /*
    BeanFactory factory = new XmlBeanFactory(new        FileSystemResource("spring.xml")) ;
    Triangle triangle=  (Triangle) factory.getBean("triangle");
    triangle.draw();
    */

    BeanFactory factoryObj = new ClassPathXmlApplicationContext("spring.xml");
    Triangle triangle=  (Triangle) factoryObj.getBean("triangle");
    triangle.draw();
}

}

这些是我所面临的例外情况。

   May 06, 2014 1:53:42 PM org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
    INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@14a1ee92: startup date [Tue May 06 13:53:42 IST 2014]; root of context hierarchy
    May 06, 2014 1:53:42 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
    INFO: Loading XML bean definitions from class path resource [C:/Users/Lalit/workspace/DemoSpring/spring.xml]
    Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [C:/Users/Lalit/workspace/DemoSpring/spring.xml]; nested exception is java.io.FileNotFoundException: class path resource [C:/Users/Lalit/workspace/DemoSpring/spring.xml] cannot be opened because it does not exist
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:343)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:216)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:251)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)
        at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)
        at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
        at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:540)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:454)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
        at org.lalit.springsession.DrawingApp.main(DrawingApp.java:24)
        Caused by: java.io.FileNotFoundException: class path resource [C:/Users/Lalit/workspace/DemoSpring/spring.xml] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:172)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:329)
        ... 13 more

Answer 1

您的spring.xml不在您的类路径上，它位于文件系统的某个位置。您的XmlBeanFactory正在从文件系统加载文件ClassPathXmlApplicationContext默认为类路径。

将文件移至类路径或修改ClassPathXmlApplicationContext的构造，并使用file:作为前缀。

    BeanFactory factoryObj = new ClassPathXmlApplicationContext("file:spring.xml");

Answer 2

您的配置是正确的。这里的问题是Drawing类没有加载spring文件所以通过将spring.xml移动到项目的src文件夹中将spring.xml文件添加到类路径中。

使用ClassPathXmlApplicationContext函数时出现异常

2 个答案: