快速业务通道

CXF client在并发下的线程安全问题 - 编程入门网

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-06-20
ription

Currently CXF calls StaxUtils.getXMLOutputFactory() to get the cached instance of XMLOutputFactoryImpl. But XMLOutputFactoryImpl.createXMLStreamWriter is not thread-safe. See below.

javax.xml.stream.XMLStreamWriter createXMLStreamWriter(javax.xml.transform.stream.StreamResult sr, String encoding) throws javax.xml.stream.XMLStreamException {           try{             if(fReuseInstance && fStreamWriter != null && fStreamWriter.canReuse() && !fPropertyChanged){                 fStreamWriter.reset();                 fStreamWriter.setOutput(sr, encoding);                 if(DEBUG)System.out.println("reusing instance, object id : " + fStreamWriter);                 return fStreamWriter;             }             return fStreamWriter = new XMLStreamWriterImpl(sr, encoding, new PropertyManager(fPropertyManager)); -- this is not thread safe, since the new instance is assigned to the field fStreamWriter first, then it is possible that different threads get the same XMLStreamWriterImpl when they call this method at the same time.           }catch(java.io.IOException io){             throw new XMLStreamException(io);         }     }

The solution might be, StaxUtils.getXMLOutputFactory() method creates a new instance of XMLOutputFactory every time, don''t cache it.

凌众科技专业提供服务器租用、服务器托管、企业邮局、虚拟主机等服务,公司网站:http://www.lingzhong.cn 为了给广大客户了解更多的技术信息,本技术文章收集来源于网络,凌众科技尊重文章作者的版权,如果有涉及你的版权有必要删除你的文章,请和我们联系。以上信息与文章正文是不可分割的一部分,如果您要转载本文章,请保留以上信息,谢谢!

分享到: 更多

Copyright ©1999-2011 厦门凌众科技有限公司 厦门优通互联科技开发有限公司 All rights reserved

地址(ADD):厦门软件园二期望海路63号701E(东南融通旁) 邮编(ZIP):361008

电话:0592-5908028 传真:0592-5908039 咨询信箱:web@lingzhong.cn 咨询OICQ:173723134

《中华人民共和国增值电信业务经营许可证》闽B2-20100024  ICP备案:闽ICP备05037997号