Question

我正在尝试使用java配置运行一个非常简单的Spring应用程序。我得到以下异常，我不明白为什么。据我所知，我有所有必需的依赖

public static void main(String[] args) 
{
     System.out.println( "Hello World from main!" );
     ApplicationContext ctx = new AnnotationConfigApplicationContext(AppConfig.class);
     HelloWorld helloWorld = ctx.getBean(HelloWorld.class);
     System.out.println( helloWorld.getMessage() );
}

异常发生在 - AnnotationConfigApplicationContext函数调用

值得一提的是：我在POM.XML文件中有以下依赖项。

  <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-asm</artifactId>
        <version>${org.springframework.version}</version>
    </dependency>

例外：

Exception in thread "main" java.lang.IllegalStateException: Cannot load configuration class: spring.play.springStart.AppConfig
at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:313)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanFactory(ConfigurationClassPostProcessor.java:197)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:681)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:620)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:73)
at spring.play.springStart.App.main(App.java:14)
Caused by: java.lang.NoClassDefFoundError: org/objectweb/asm/util/TraceClassVisitor
at net.sf.cglib.core.DebuggingClassWriter.toByteArray(DebuggingClassWriter.java:73)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:26)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
at org.springframework.context.annotation.ConfigurationClassEnhancer.newEnhancer(ConfigurationClassEnhancer.java:136)
at org.springframework.context.annotation.ConfigurationClassEnhancer.enhance(ConfigurationClassEnhancer.java:109)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.enhanceConfigurationClasses(ConfigurationClassPostProcessor.java:303)
... 6 more
Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.util.TraceClassVisitor
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 17 more

Answer 1

我实际上并不知道是什么解决了这个问题，但我确实去了一些做同样事情的教程网站，只是复制了他们的pom文件依赖项。我仍然不明白遗漏了什么。

无论如何，Balint Bako对他的答案可能是正确的，但我不确定，当我回到StackOverflow时，我得到了解决。

这是pom文件

  <!-- Spring 3 dependencies -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- JavaConfig need this library -->
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>2.2.2</version>
    </dependency>

祝你好运

Answer 2

根据例外，似乎缺少与ASM相关的jar。您可以添加asm-all

<dependency>
   <groupId>asm</groupId>
   <artifactId>asm-all</artifactId>
   <version>2.1</version>
</dependency>

Answer 3

你也需要弹簧核心。

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>${org.springframework.version}</version>
</dependency>

Answer 4

它与我一起工作时具有以下依赖性。感谢Rubens Mariuzzo。您破解了cglib版本问题。它从未与 3.0 一起使用，但与 2.2.2

一起使用
<dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.0.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>3.0.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>3.0.0.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.0.0.RELEASE</version> </dependency> <dependency> <groupId>cglib</groupId> <artifactId>cglib</artifactId> <version>2.2.2</version> </dependency> </dependencies>

Spring注释配置java.lang.NoClassDefFoundError：org / objectweb / asm / util / TraceClassVisitor

4 个答案: