wait （）必须放到 while 循环内，因为可能有虚假唤醒的可能，你这写法很容易死循环啊，推荐用 2 个 semaphore 来做，而且感觉你这需求有点不太对

@lxk11153 覆盖 org.springframework.core.JdkVersion 这个已经加上 ：）

@lxk11153 谢谢，应该不是这个问题，已经加上了。。。

@lxk11153 看了下报错在 package org.springframework.beans.factory.xml ，catch 了 LinkageError 可能是兼容的问题，我在研究下
public NamespaceHandler resolve(String namespaceUri) {
Map handlerMappings = this.getHandlerMappings();
Object handlerOrClassName = handlerMappings.get(namespaceUri);
if (handlerOrClassName == null) {
return null;
} else if (handlerOrClassName instanceof NamespaceHandler) {
return (NamespaceHandler)handlerOrClassName;
} else {
String className = (String)handlerOrClassName;

try {
Class handlerClass = ClassUtils.forName(className, this.classLoader);
if (!NamespaceHandler.class.isAssignableFrom(handlerClass)) {
throw new FatalBeanException("Class [" + className + "] for namespace [" + namespaceUri + "] does not implement the [" + NamespaceHandler.class.getName() + "] interface");
} else {
NamespaceHandler namespaceHandler = (NamespaceHandler)BeanUtils.instantiateClass(handlerClass);
namespaceHandler.init();
handlerMappings.put(namespaceUri, namespaceHandler);
return namespaceHandler;
}
} catch (ClassNotFoundException var7) {
throw new FatalBeanException("NamespaceHandler class [" + className + "] for namespace [" + namespaceUri + "] not found", var7);
} catch (LinkageError var8) {
throw new FatalBeanException("Invalid NamespaceHandler class [" + className + "] for namespace [" + namespaceUri + "]: problem with handler class file or dependent class", var8);
}
}
}

@lxk11153 我这边是消费者，用的 java8，spring 有点老，用的 2.5

@lxk11153 看了下，确实是一样的

@lxk11153 还是这个提示，NamespaceHandler 这个好像是解析自定义标签，看样子是标签解析不成功

Caused by: org.springframework.beans.FatalBeanException: Invalid NamespaceHandler class [org.apache.dubbo.config.spring.schema.DubboNamespaceHandler] for namespace [http://code.alibabatech.com/schema/dubbo]: problem with handler class file or dependent class; nested exception is java.lang.VerifyError: class org.apache.dubbo.config.spring.schema.DubboNamespaceHandler overrides final method parse.(Lorg/w3c/dom/Element;Lorg/springframework/beans/factory/xml/ParserContext;)Lorg/springframework/beans/factory/config/BeanDefinition;
at org.springframework.beans.factory.xml.DefaultNamespaceHandlerResolver.resolve(DefaultNamespaceHandlerResolver.java:138)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1292)
at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1287)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:92)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:507)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:398)
... 32 more
Caused by: java.lang.VerifyError: class org.apache.dubbo.config.spring.schema.DubboNamespaceHandler overrides final method parse.(Lorg/w3c/dom/Element;Lorg/springframework/beans/factory/xml/ParserContext;)Lorg/springframework/beans/factory/config/BeanDefinition;

@arrow8899 这也是个方法