org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [applicationContext.xml]; nested exception is java.io.FileNotFoundException: class path resource [applicationContext.xml] cannot be opened because it does not exist

2015-08-24 15:26:10   作者：MangoCool   来源：MangoCool

想在本地启动Spring，然后从框架中获得一个bean，于是就有了下面的故事，对于一个程序猿来说这样的异常是不能容忍的，为什么？因为特么介个异常是异常界的屌丝，一个词：低级！忠告：不过，你最好表这样子！千万不要瞧不起！

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [applicationContext.xml]; nested exception is java.io.FileNotFoundException: class path resource [applicationContext.xml] cannot be opened because it does not exist
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:344)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)
	at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:79)
	at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:67)
	at com.dtxy.pool.StartSpring.getConnectionManager(StartSpring.java:44)
	at com.dtxy.pool.StartSpring.main(StartSpring.java:30)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.io.FileNotFoundException: class path resource [applicationContext.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:330)
	... 10 more

此异常问题很明显，就是在classpath下找不到applicationContext.xml文件。

下面我们就来看一下，几种加载方式，以及路径说明：

private static String path = "D:\\workspaceSpark\\src\\main\\resources\\applicationContext.xml";
private static String classpath = "applicationContext.xml";

//通过XmlBeanFactory获取bean，通过ClassPathResource类加载applicationContext，从类名知道applicationContext.xml必须位于classpath下
XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource(classpath));
ConnectionManager connectionManager = (ConnectionManager) factory.getBean("connectionManager");

//通过ApplicationContext上下文获取bean，通过FileSystemXmlApplicationContext类加载applicationContext，可同时加载多个xml文件，从类名知道只要路劲正确就可以将applicationContext.xml加载
ApplicationContext context =
        new FileSystemXmlApplicationContext(new String[] {path});
ConnectionManager connectionManager = (ConnectionManager) context.getBean("connectionManager");

//通过ApplicationContext上下文获取bean，通过ClassPathXmlApplicationContext类加载applicationContext，可同时加载多个xml文件，从类名知道applicationContext.xml必须位于classpath下
ApplicationContext context =
        new ClassPathXmlApplicationContext("applicationContext.xml");
ConnectionManager connectionManager = (ConnectionManager) context.getBean("connectionManager");

注：很多人总搞不清楚classpath到底是哪里，Java Project项目其实就是指的src目录，如果是maven项目就是指的resources。

标签： Spring java Exception

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