spring5 bug分析
问题复述
在一次使用ssm开发的时候，发现了此bug
public class TestGetBeanProductTypeServiceImpl {
/**
* 用于测试：
*/
@Test
public void test() {
ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("spring/application-*.xml");
String[] beanDefinitionNames = classPathXmlApplicationContext.getBeanDefinitionNames();
for (String beanDefinitionName : beanDefinitionNames) {
System.out.println("beanDefinitionName = " + beanDefinitionName);
}
ProductTypeService productTypeServiceImpl = (ProductTypeService) classPathXmlApplicationContext.getBean("ProductTypeServiceImpl");
List<ProductType> all = productTypeServiceImpl.getAll();
all.forEach(type -> System.out.println(type.toString()));
}
}
代码如上所示：
我的配置文件：
在获取productTypeServiceImpl的时候，第一次出现了异常
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'ProductTypeServiceImpl' available
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:808)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1279)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:297)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1108)
at indi.yuluo.test.TestGetBeanProductTypeServiceImpl.test(TestGetBeanProductTypeServiceImpl.java:31)
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$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
第一次出现之后，我认为是bean id的问题，定义了bean id之后，同样是此问题，后来对比了配置文件之后，发现问题所在
正确代码：
ClassPathXmlApplicationContext classPathXmlApplicationContext = new ClassPathXmlApplicationContext("spring/applicationContex-*.xml");
问题分析
debug展开对问题的分析：
配置文件错误应该报出的是FileNotFoundException异常，为什么会No bean name异常？
经过分析，在深入了spring的源码之后
在上下文环境配置的源码中org.springframework.context.support.AbstractApplicationContext
发现问题
此代码缺少对parent为空的处理，我认为此处应该报出一个FileNotFoundException异常， 而不是直接执行下一步。
反馈spring官方
此问题已经反馈spring官方
问题链接：https://github.com/spring-projects/spring-framework/issues/28584 | 
发表于 2022-6-8 18:10
|
发表于 2022-6-9 09:28
