例外：读取 XML 时没有协议
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【中文标题】例外：读取 XML 时没有协议【英文标题】：Exception: No protocol while reading XML 【发布时间】：2010-11-01 03:33:14 【问题描述】：我需要从字符串缓冲区或字符串中解析 xml 数据..我的代码如下。
在线document doc =db.parse(eventXml ) ..它抛出异常-请在下面找到代码和异常。请帮助我
代码
eventXml = strBuffer.toString();
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(eventXml );
例外
java.net.MalformedURLException: no protocol: <?xml version="1.0" encoding="UTF-8
" standalone="yes"?>%0A<EventInfo xmlns="http://www.telenet.be/oms/event">%0A
<TelenetEventInfo className="be.telenet.oms.events.OmsAsapJsrpNotifyEvent">%0A
<SimpleFields>%0A <SimpleField>%0A <FieldName>C
ompletion_Date_Time</FieldName>%0A <FieldValue>04/08/2009 08:34:0
1</FieldValue>%0A </SimpleField>%0A <SimpleField>%0A
<FieldName>Originator</FieldName>%0A <FieldValue>System
</FieldValue>%0A </SimpleField>%0A <SimpleField>%0A
<FieldName>Status</FieldName>%0A <FieldValue>S</FieldVal
ue>%0A </SimpleField>%0A <SimpleField>%0A <
FieldName>Workorder_ID</FieldName>%0A <FieldValue>I00054132231-09
8</FieldValue>%0A </SimpleField>%0A </SimpleFields>%0A
<ArrayData>%0A <ArrayNames>%0A <ArrayName>Parameters</
ArrayName>%0A <ArrayFieldEntry>%0A <ArraySubFi
eld>[0].Parameter_Name</ArraySubField>%0A <ArraySubFieldValue
>WARNING_TEXT</ArraySubFieldValue>%0A </ArrayFieldEntry>%0A
<ArrayFieldEntry>%0A <ArraySubField>[0].Parameter_v
alue</ArraySubField>%0A <ArraySubFieldValue>UnknownKeyExcepti
on-Retrieving a webURL%0A for an unknown loginid: a004301</Ar
raySubFieldValue>%0A </ArrayFieldEntry>%0A <ArrayF
ieldEntry>%0A <ArraySubField>[1].Parameter_Name</ArraySubFiel
d>%0A <ArraySubFieldValue>AGED</ArraySubFieldValue>%0A
</ArrayFieldEntry>%0A <ArrayFieldEntry>%0A
<ArraySubField>[1].Parameter_value</ArraySubField>%0A <
ArraySubFieldValue/>%0A </ArrayFieldEntry>%0A <Arr
ayFieldEntry>%0A <ArraySubField>[2].Parameter_Name</ArraySubF
ield>%0A <ArraySubFieldValue>OPERATION</ArraySubFieldValue>%0
A </ArrayFieldEntry>%0A <ArrayFieldEntry>%0A
<ArraySubField>[2].Parameter_value</ArraySubField>%0A
<ArraySubFieldValue>DEL</ArraySubFieldValue>%0A </ArrayFie
ldEntry>%0A <ArrayFieldEntry>%0A <ArraySubFiel
d>[3].Parameter_Name</ArraySubField>%0A <ArraySubFieldValue>S
USPEND</ArraySubFieldValue>%0A </ArrayFieldEntry>%0A
<ArrayFieldEntry>%0A <ArraySubField>[3].Parameter_value</A
rraySubField>%0A <ArraySubFieldValue/>%0A </Ar
rayFieldEntry>%0A </ArrayNames>%0A </ArrayData>%0A <eve
ntName>OMS::ASAP::JSRP::Notify</eventName>%0A <destination>OSB</destinati
on>%0A </TelenetEventInfo>%0A</EventInfo>%0A%0A
at java.net.URL.<init>(URL.java:537)
at java.net.URL.<init>(URL.java:434)
at java.net.URL.<init>(URL.java:383)
at weblogic.apache.xerces.impl.XMLEntityManager.startEntity(XMLEntityMan
ager.java:836)
at weblogic.apache.xerces.impl.XMLEntityManager.startDocumentEntity(XMLE
ntityManager.java:782)
at weblogic.apache.xerces.impl.XMLDocumentScannerImpl.setInputSource(XML
DocumentScannerImpl.java:260)
at weblogic.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguratio
n.java:499)
at weblogic.apache.xerces.parsers.DTDConfiguration.parse(DTDConfiguratio
n.java:581)
at weblogic.apache.xerces.parsers.XMLParser.parse(XMLParser.java:152)
at weblogic.apache.xerces.parsers.DOMParser.parse(DOMParser.java:257)
at weblogic.apache.xerces.jaxp.DocumentBuilderImpl.parse(DocumentBuilder
Impl.java:201)
at weblogic.xml.jaxp.RegistryDocumentBuilder.parse(RegistryDocumentBuild
er.java:149)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:124)
at Controller.getEvent_Xml(Controller.jpf:822)
at Controller.GetDetails(Controller.jpf:487)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.bea.wlw.netui.pageflow.FlowController.invokeActionMethod(FlowCont
roller.java:1512)
at com.bea.wlw.netui.pageflow.FlowController.getActionMethodForward(Flow
Controller.java:1447)
at com.bea.wlw.netui.pageflow.FlowController.internalExecute(FlowControl
ler.java:778)
at com.bea.wlw.netui.pageflow.PageFlowController.internalExecute(PageFlo
wController.java:211)
at com.bea.wlw.netui.pageflow.FlowController.execute(FlowController.java
:608)
at org.apache.struts.action.RequestProcessor.processActionPerform(Reques
tProcessor.java:484)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.processActionPerf
orm(PageFlowRequestProcessor.java:1504)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.ja
va:274)
at com.bea.wlw.netui.pageflow.PageFlowRequestProcessor.process(PageFlowR
equestProcessor.java:674)
at com.bea.wlw.netui.pageflow.AutoRegisterActionServlet.process(AutoRegi
sterActionServlet.java:527)
at com.bea.wlw.netui.pageflow.PageFlowActionServlet.process(PageFlowActi
onServlet.java:152)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:1072)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:465)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:348)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6985)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
Closing down all connections...
<Jun 8, 2009 4:03:18 PM IST> <Error> <HTTP> <BEA-101019> <[ServletContext(id=312
55131,name=ECToolWeb,context-path=/ECToolWeb)] Servlet failed with IOException
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at weblogic.servlet.internal.PostInputStream.read(PostInputStream.java:1
70)
at weblogic.servlet.internal.ServletInputStreamImpl.read(ServletInputStr
eamImpl.java:180)
at weblogic.servlet.internal.ServletRequestImpl.mergePostParams(ServletR
equestImpl.java:1339)
at weblogic.servlet.internal.ServletRequestImpl.parseQueryParams(Servlet
RequestImpl.java:1206)
at weblogic.servlet.internal.ServletRequestImpl.getParameter(ServletRequ
estImpl.java:1409)
at weblogic.servlet.internal.ServletRequestImpl.getParameter(ServletRequ
estImpl.java:1395)
at com.bea.wlw.netui.pageflow.scoping.ScopedServletUtils.getScopedSessio
nAttrName(ScopedServletUtils.java:301)
at com.bea.wlw.netui.pageflow.PageFlowUtils.getCurrentActionResolver(Pag
eFlowUtils.java:496)
at com.bea.wlw.netui.pageflow.PageFlowUtils.getCurrentPageFlow(PageFlowU
tils.java:478)
at com.bea.wlw.netui.pageflow.PageFlowUtils.ensureCurrentPageFlow(PageFl
owUtils.java:454)
at com.bea.wlw.netui.pageflow.PageFlowJspFilter.doFilter(PageFlowJspFilt
er.java:193)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6987)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
--------------- nested within: ------------------
weblogic.utils.NestedRuntimeException: Cannot parse POST parameters of request:
'/ECToolWeb/DetailDisplay.jsp' - with nested exception:
[java.net.SocketTimeoutException: Read timed out]
at weblogic.servlet.internal.ServletRequestImpl.mergePostParams(ServletR
equestImpl.java:1364)
at weblogic.servlet.internal.ServletRequestImpl.parseQueryParams(Servlet
RequestImpl.java:1206)
at weblogic.servlet.internal.ServletRequestImpl.getParameter(ServletRequ
estImpl.java:1409)
at weblogic.servlet.internal.ServletRequestImpl.getParameter(ServletRequ
estImpl.java:1395)
at com.bea.wlw.netui.pageflow.scoping.ScopedServletUtils.getScopedSessio
nAttrName(ScopedServletUtils.java:301)
at com.bea.wlw.netui.pageflow.PageFlowUtils.getCurrentActionResolver(Pag
eFlowUtils.java:496)
at com.bea.wlw.netui.pageflow.PageFlowUtils.getCurrentPageFlow(PageFlowU
tils.java:478)
at com.bea.wlw.netui.pageflow.PageFlowUtils.ensureCurrentPageFlow(PageFl
owUtils.java:454)
at com.bea.wlw.netui.pageflow.PageFlowJspFilter.doFilter(PageFlowJspFilt
er.java:193)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:6987)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3892)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2766)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:224)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:183)
>
.
【问题讨论】：
jrharshath：虽然我同意你的观点，但你的态度不属于这里。 相关***.com/questions/1706493/… 【参考方案1】：你正在调用
Document doc = db.parse(eventXml);
eventXml 显然是一串 XML 数据。
然而，DocumentBuilder.parse(String) 方法需要一个 URI 来加载 XML。这就是您收到 MalformedURLException 的原因：Java 尝试使用您的 XML 作为 URI。
您需要 DocumentBuilder.parse(InputSource) 或 DocumentBuilder.parse(InputStream)。 InputStream 可以使用例如从您的 String/StringBuffer 创建
new InputSource(new StringReader(xmlString))
（未经测试）。
【讨论】：
+1 经过测试，它可以工作。不推荐使用 StringBufferInputStream。【参考方案2】：parse() 不采用实际的 XML 作为参数，而是采用指向文档的 URL。
你应该使用 DocumentBuilder.parse(new StringBufferInputStream(eventXml));
【讨论】：
(+1) .. 清楚地写在 DocumentBuilder#parse 的 JavaDoc 中。如果仍有疑问，请在 Google 上搜索“DocumentBuilder”并点击第一个链接。StringBufferInputStream 是 deprecated。有更好的解决方案：***.com/a/1706533/1851290
您可以使用new ByteArrayInputStream(eventXml.getBytes("utf-8")) 替换已弃用的StringBufferInputStream【参考方案3】：
试试db.parse(eventXml)，而不是：
Document doc = db.parse(new InputSource(new StringReader(eventXml)));
【讨论】：
【参考方案4】：您发布了如此多的内容，但没有任何内容可以帮助任何读者了解您想要做什么。 如果您的问题只是 XML 解析给您带来了问题，请检查您的 XML 格式是否正确。
【讨论】：
【参考方案5】：这个 sn-p 应该可以工作。
private String updateMyXML(String orderXML)
javax.xml.parsers.DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
InputSource inputSource = new InputSource(new StringReader(orderXML));
【讨论】：
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