如何从 Java 中的类路径加载“context.xml”？

Question

我正在尝试使用 Java 从类路径加载我的 spring context.xml 文件。我的context.xml 文件位于src/main/resources。

public static void main(String[] args) {
    ClassPathXmlApplicationContext context = null;
    try {
        context = new ClassPathXmlApplicationContext("classpath:context.xml");
        context.registerShutdownHook();
    } catch (Exception ex) {
        ex.printStackTrace();
    } finally {
        if (context != null) {
            context.close();
        }
    }
}

当我在 Eclipse 中运行时，上面的代码可以正常工作。但是，只要我通过右键单击项目将其打包成一个可运行的 jar 并选择导出为可运行的 jar，然后从 ubuntu 机器运行 jar -

java -jar test.jar

然后我遇到异常 -

org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [context.xml]; nested exception is java.io.FileNotFoundException: class path resource [context.xml] cannot be opened because it does not exist
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:341)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:243)
        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:130)
        at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
        at com.host.sd.corp.ldap.Application.main(Application.java:63)
        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:616)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
Caused by: java.io.FileNotFoundException: class path resource [context.xml] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:157)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:328)
        ... 18 more

我有什么遗漏吗？

Answer 1

您的 jar 中可能没有包含 src/main/resources 中的资源。我不相信 Maven 插件涉及 Eclipse 的 Jar Export 实用程序。