Question

您好我使用EclipseEE和Java8_40。我从Spring Framework开始并遇到一些问题。当我想在beans.xml中使用构造函数时，程序会创建一个Exception。

我有CLASSPATH：
- commons-logging-1.2.jar
- commons-logging-1.2-javadoc.jar
和春天* .jars
- spring-aop-4.1.5.RELEASE.jar
- spring-asm-3.1.1.RELEASE.jar
- spring-beans-4.1.5.RELEASE.jar
- spring-context-4.1.5.RELEASE.jar
- spring-aspects-4.1.5.RELEASE.jar
- spring-context-support-4.1.5.RELEASE.jar
- spring-core-4.1.5.RELEASE.jar
- spring-web-4.1.5.RELEASE.jar
- spring-webmvc-4.1.5.RELEASE.jar
- spring-expression-4.1.5.RELEASE.jar

SPRING BEAN

package beans;
public class SequenceGenerator {
    private String prefix;
    private String suffix;
    private int initial;
    private int counter;
    public SequenceGenerator() {}
    public SequenceGenerator(String prefix, String suffix, int initial) {
        this.prefix = prefix;
        this.suffix = suffix;
        this.initial = initial; }
    public void setPrefix(String prefix) {
        this.prefix = prefix;   }
    public void setSuffix(String suffix) {
        this.suffix = suffix;   }
    public void setInitial(int initial) {
        this.initial = initial; }
    public synchronized String getSequence() {
        StringBuffer buffer = new StringBuffer();
        buffer.append(prefix);
        buffer.append(initial + counter++);
        buffer.append(suffix);
        return buffer.toString();   }
}

CLIENT

package klient.program;
import org.springframework.context.*;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import beans.SequenceGenerator;
public class Program {
    @SuppressWarnings("resource")
    public static void main(String [] args){
        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
        SequenceGenerator generator = (SequenceGenerator) context.getBean("sequenceGenerator");
        System.out.println(generator.getSequence());
        System.out.println(generator.getSequence());
    }
}

的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-4.1.xsd">
    <bean name="sequenceGenerator" class="beans.SequenceGenerator">
        <constructor-arg><value>30</value></constructor-arg>
        <constructor-arg><value>A</value></constructor-arg>
        <constructor-arg><value>100000</value></constructor-arg>
    </bean> 
</beans>

例外：

Exception in thread "main" java.lang.IncompatibleClassChangeError: class org.springframework.core.LocalVariableTableParameterNameDiscoverer$ParameterNameDiscoveringVisitor has interface org.springframework.asm.ClassVisitor as super class at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.inspectClass(LocalVariableTableParameterNameDiscoverer.java:114) at org.springframework.core.LocalVariableTableParameterNameDiscoverer.getParameterNames(LocalVariableTableParameterNameDiscoverer.java:87) at org.springframework.core.PrioritizedParameterNameDiscoverer.getParameterNames(PrioritizedParameterNameDiscoverer.java:65) at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:182) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1131) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1034) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) at klient.program.Program.main(Program.java:8)

Answer 1

你不需要spring-asm-（版本）.jar。这种依赖关系早在春天核心：

但请注意，我们已经取消了M2中专用的spring-asm jar 支持直接包含org.springframework.asm类弹簧核心。对于JDK7用户来说，这两个升级都是好消息以动态JVM语言编写Spring组件，就像这些新的一样 CGLIB和ASM的版本正确处理新的invokedynamic JDK7中引入的字节码指令。

http://spring.io/blog/2012/09/12/spring-framework-3-2-m2-released

如何写在这里：https://github.com/spring-projects/spring-framework/commit/c16f18a5fd659f34d6290b5f2cffe54534b7592a此模块已完全删除，而是使用ASM 4

Spring - <constructor-arg> - java.lang.IncompatibleClassChangeError </constructor-arg>

1 个答案: