(六)Java Ee平台上实现Web服务及多种客户端实例－小结

Posted on 2007-12-17 10:16 csdnexpert 阅读(137) 评论(0) 编辑收藏举报

问题解决

在开发过程中，可能会遇到以下问题：

1.错误信息:

javax.xml.ws.WebServiceException: Failed to access the WSDL at: http://localhost:8080/StockQuoteWS/StockQuoteService?WSDL. It failed with:

Connection refused: connect.

at Connection refused: connect.

at com.sun.xml.ws.wsdl.parser.RuntimeWSDLParser.tryWithMex(RuntimeWSDLParser.java:136)

at com.sun.xml.ws.wsdl.parser.RuntimeWSDLParser.parse(RuntimeWSDLParser.java:122)

at com.sun.xml.ws.client.WSServiceDelegate.parseWSDL(WSServiceDelegate.java:226)

......

原因及解决方法：

Web服务需要部署在服务器上,上面的错误信息往往是因为没有启动应用服务器。在NetBeans ＂运行环境＂tab中，＂服务器＂->"Sun Application Server 9" -> 启动。

2. 错误信息

java.lang.LinkageError: JAXB 2.0 API is being loaded from the bootstrap classloader, but this RI (from jar:file:/C:/Java/netbeans-5.5.1/ide7/modules/ext/jaxws21/jaxb-impl.jar!/com/sun/xml/bind/v2/model/impl/ModelBuilder.class) needs 2.1 API. Use the endorsed directory mechanism to place jaxb-api.jar in the bootstrap classloader. (See http://java.sun.com/j2se/1.5.0/docs/guide/standards/)

at com.sun.xml.bind.v2.model.impl.ModelBuilder.<clinit>(ModelBuilder.java:136)

at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:406)

at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:270)

......

原因及解决方法：

这种错误通常发生在Java SE 6(JDK 6)平台上，因为Java SE 6(JDK 6)缺省自带的是 JAXB 2.0 和 JAX-WS 2.0．最简单的办法是把NetBeans 5.5.1 中自带的JAXB 2.1 和 JAX-WS 2.1 拷贝到Java SE 6(JDK 6)平台中去．具体做法如下，在Java 平台的JRE的lib目录下建立endorsed目录，比如＂C:\Java\jdk1.6.0\jre\lib\endorsed＂，然后在NetBeans 5.5.1 中找到jaxb-api.jar和jaxws-api.jar两个文件，比如在目录＂C:\Java\netbeans-5.5.1\ide7\modules\ext\jaxws21\api＂下．