java.net.MalformedURLException: unknown protocol: ej解决方法

由于本人要创建的树很大,最终想了一个办法,给每棵树的支生成一个XMl文件,但在读取创建好的XML文件时出现了下列问题­

E:/工程文件/java/Workspaces/MyEclipse/.metadata/.me_tcat/webapps/water/16.xml­

创建完成­

java.net.MalformedURLException: unknown protocol: e­

at java.net.URL.(URL.java:574)­

at java.net.URL.(URL.java:464)­

at java.net.URL.(URL.java:413)­

at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)­

at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)­

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)­

at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)­

at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)­

at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)­

at org.jdom.input.SAXBuilder.build(SAXBuilder.java:489)­

at org.jdom.input.SAXBuilder.build(SAXBuilder.java:928)­

at heidu004.config.Initialize.showTree(Initialize.java:80)­

at heidu004.config.Initialize.init(Initialize.java:187)­

at javax.servlet.GenericServlet.init(GenericServlet.java:212)­

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161)­

at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981)­

at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4042)­

at org.apache.catalina.core.StandardContext.start(StandardContext.java:4348)­

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)­

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)­

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)­

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:920)­

at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:883)­

at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)­

at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)­

at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)­

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)­

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)­

at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)­

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)­

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)­

at org.apache.catalina.core.StandardService.start(StandardService.java:516)­

at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)­

at org.apache.catalina.startup.Catalina.start(Catalina.java:566)­

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)­

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)­

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)­

at java.lang.reflect.Method.invoke(Method.java:597)­

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)­

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)­

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代码分析­

      ServletContext con=getServletContext();­

      String path=con.getRealPath("/");­

      UptownInfo up = (UptownInfo) uptownIterator.next();­

      fileString=path+up.getUptownId()+".xml";//组成文件名路径­

      CsdnTree.insertXmlFile(fileString);//以地区名创建XML­

      SAXBuilder builder = new SAXBuilder();­

      //Document doc = builder.build(fileString);//这就是报异常的代码­

      Document doc = builder.build("file://"+fileString); //只要加上file://就可以了­