最近在学习Spring，使用的是Spring 5.0.1 学习书本中使用的是4.0
学习书本中使用以下来加载配置文件及设置
Resource resource = new ClassPathResource("applicationContext.xml"); //加载配置文件 BeanFactory factory = new XmlBeanFactory(resource); Student student= (Student) factory.getBean("student"); student.setName("李明"); student.setAge(18); mystudentBean.setSex("男"); System.out.println(student);
结果XmlBeanFactory(resource)那里出现了已过时，后面上网查了一下使用了如下方式
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");BeanFactory factory = context;Student student= (Student) factory.getBean("student");student.setName("李明");student.setAge(18);student.setSex("男");System.out.println(student);
在Junit test类中运行的时候出现了如下错误：
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactoryat org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:160)at org.springframework.context.support.AbstractApplicationContext.<init>(AbstractApplicationContext.java:230)at org.springframework.context.support.AbstractRefreshableApplicationContext.<init>(AbstractRefreshableApplicationContext.java:92)at org.springframework.context.support.AbstractRefreshableConfigApplicationContext.<init>(AbstractRefreshableConfigApplicationContext.java:59)at org.springframework.context.support.AbstractXmlApplicationContext.<init>(AbstractXmlApplicationContext.java:62)at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:141)at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:85)at com.itzcn.Test.BeanFactoryTest.test(BeanFactoryTest.java:25)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactoryat java.net.URLClassLoader.findClass(URLClassLoader.java:381)at java.lang.ClassLoader.loadClass(ClassLoader.java:424)at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)at java.lang.ClassLoader.loadClass(ClassLoader.java:357)... 31 more
原因是因为缺少了commons-logging-1.1.3.jar包，加入该包后可以正常运行测试了
写以上是为了方便记录自己学习过程中遇到问题的解决方式，避免出现类似的问题时不知道是什么原因。
