下面是我的Spring代码。当我尝试编译程序时,所有类都已成功编译,并且在运行程序NoClassDefFoundError
时出现。
MainMethodCLass:
package test;
import beans.SpringTest;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
public class Client
{
public static void main(String [] raja)
{
//find xml
Resource r = new ClassPathResource("resources/spring.xml");
//load xml into container
BeanFactory fact = new XmlBeanFactory(r);
//create test class object
Object o = fact.getBean("t");
SpringTest t = (SpringTest)o;
t.hello();
}
}
简单的POJO课程:
package beans;
public class SpringTest
{
public void hello()
{
System.out.println("Hello World");
}
}
包资源中的spring.xml文件:
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<bean id = "t" class = "beans.Test">
</bean>
</beans>
当我编译这个程序时,它已成功编译,但是当我编译时,引发了以下错误:
D:\Corejava>java test.Client
Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/core/io/Resource
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.springframework.core.io.Resource
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)
... 6 more
答案 0 :(得分:0)
将弹簧库添加到类路径
命令行应该是
lastChangedDate
答案 1 :(得分:0)
您的路径中有多个,版本不同。删除一个,使用
org.springframework.core
下载依赖项。
答案 2 :(得分:0)
您需要在类路径和lib文件夹中包含jar spring-core-*.jar
文件
在你的calss中,这个import org.springframework.core.*
都在核心jar文件中。
答案 3 :(得分:0)
java.lang.NoClassDefFoundError - 此错误并不意味着JVM无法在类路径中找到您的类文件。要么它找到了类,但引用的类必须引用一些未加载的依赖类,或者有多个定义。使用Maven加载Spring lib。