org.dom4j.DocumentException: Connection timed out: connect Nested exception:

今天使用dom4j解析.xml的时候,  前提是我自定义了一个.xml文件.

大致内容如下:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<project>
 <name>
  <menu name="Student Management">
   <node>/project/test.action</node>
  </menu>
  <menu name="Deploy Management">
   <node>/project/selectBar.jsp</node>
  </menu>
  <menu name="view" value="/mainView.jsp">
   <node>/project/infoView.jsp</node>
  </menu>
 </name>
</project>

 

居然报了一个 连接超时的错误:
org.dom4j.DocumentException: Connection timed out: connect Nested exception: Connection timed out: connect
 at org.dom4j.io.SAXReader.read(SAXReader.java:484)
 at org.dom4j.io.SAXReader.read(SAXReader.java:321)
 at com.util.ReadXmlDataUtil.getLanguageXMLData(ReadXmlDataUtil.java:28)
 at com.admin.util.ReadXmlDataUtil.main(ReadXmlDataUtil.java:50)
Nested exception:
java.net.ConnectException: Connection timed out: connect
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
 at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
 at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
 at java.net.Socket.connect(Socket.java:519)
 at java.net.Socket.connect(Socket.java:469)
 at sun.net.NetworkClient.doConnect(NetworkClient.java:163)
 at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)
 at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
 at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
 at org.dom4j.io.SAXReader.read(SAXReader.java:465)
 at org.dom4j.io.SAXReader.read(SAXReader.java:321)
 at com.huawei.ngbss.admin.util.ReadXmlDataUtil.getLanguageXMLData(ReadXmlDataUtil.java:28)
 at com.huawei.ngbss.admin.util.ReadXmlDataUtil.main(ReadXmlDataUtil.java:50)
Nested exception: java.net.ConnectException: Connection timed out: connect
 at java.net.PlainSocketImpl.socketConnect(Native Method)
 at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)

解决方案:
后面找到了其中的原因:
是网络的问题.因为DOCTYPE的连接不同造成的.
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
使用了saxreader解析器的时候,会自动解析DOCTYPE里面的内容.如果连接不上网络,则会报连接超时的异常.

所以为了,不然解析DOCTYPE,则reader.setFeature(不加载dtd文件,false); 就不会去解析DOCTYPE了.

即可.

SAXReader reader = new  SAXReader();

reader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);