Spring ClassPathXmlApplicationContext NullPointerException [英] Spring ClassPathXmlApplicationContext NullPointerException

问题描述

尝试使用弹簧.xml 文件在 src 下.我已经搜索过，但找不到问题所在.好像找不到xml文件.

Trying to use spring. The xml file is under src. I've searched and cannot find the problem. Seems it cant find the xml file.

我收到以下错误:

    Exception in thread "main" java.lang.ExceptionInInitializerError
at org.springframework.core.env.AbstractEnvironment.suppressGetenvAccess(AbstractEnvironment.java:406)
at org.springframework.core.env.AbstractEnvironment.getSystemEnvironment(AbstractEnvironment.java:368)
at org.springframework.core.env.StandardEnvironment.customizePropertySources(StandardEnvironment.java:79)
at org.springframework.core.env.AbstractEnvironment.<init>(AbstractEnvironment.java:124)
at org.springframework.core.env.StandardEnvironment.<init>(StandardEnvironment.java:54)
at org.springframework.context.support.AbstractApplicationContext.createEnvironment(AbstractApplicationContext.java:444)
at org.springframework.context.support.AbstractApplicationContext.getEnvironment(AbstractApplicationContext.java:283)
at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.resolvePath(AbstractRefreshableConfigApplicationContext.java:122)
at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.setConfigLocations(AbstractRefreshableConfigApplicationContext.java:80)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:137)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.hancock.javabrains.DrawingApp.main(DrawingApp.java:13)
Caused by: java.lang.NullPointerException
at org.springframework.core.SpringProperties.<clinit>(SpringProperties.java:58)
... 12 more

这是导致错误的行(通过将 Beans.xml 更改为错误的名称，我仍然遇到相同的错误):

This is the line causing an error (By changing Beans.xml to an erroneous name I still get same error):

ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");

xml(Beans.xml):

The xml (Beans.xml):

<?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-4.0.xsd">

<bean id="helloWorld" class="org.hancock.javabrains.HelloWorld">
   <property name="message" value="Hello World!"/>
</bean>

</beans>

推荐答案

提供完整文件路径试试这个

Try this by giving the full file path

ApplicationContext ctx = new FileSystemXmlApplicationContext("Beans.xml");

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