使用SOAP请求调用Web服务时，将提供以下解析错误。 我检查了请求的序言，它没有空格或破折号。即使它会导致以下错误
org.xml.sax.SAXParseException: Content is not allowed in prolog.
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Un
known Source)
at org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
at org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl$PrologDispatcher.dispat
ch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Sour
ce)
at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:198)
at requestModel.SimpleCheckMail.checkMail(SimpleCheckMail.java:162)
at model.InboxDataBean.prepareList(InboxDataBean.java:97)
at model.InboxDataBean.getemailList(InboxDataBean.java:207)
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:597)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:87)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELR
esolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELRe
solver.java:203)
at org.apache.el.parser.AstValue.getValue(AstValue.java:169)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:1
89)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpress
ion.java:109)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.
java:194)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.
java:182)
at javax.faces.component.UIData.getValue(UIData.java:731)
at javax.faces.component.UIData.getDataModel(UIData.java:1798)
at javax.faces.component.UIData.setRowIndexWithoutRowStatePreserved(UIDa
ta.java:484)
at javax.faces.component.UIData.setRowIndex(UIData.java:473)
at com.sun.faces.renderkit.html_basic.TableRenderer.encodeBegin(TableRen
derer.java:81)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.jav
a:820)
at javax.faces.component.UIData.encodeBegin(UIData.java:1118)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1754)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.
java:845)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1756)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1759)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView
(FaceletViewHandlingStrategy.java:401)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewH
andler.java:131)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePha
se.java:121)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:410)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authentica
torBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp
11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(
AbstractProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoin
t.java:1805)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:907)
at java.lang.Thread.run(Thread.java:619)
请让我知道这个错误的问题......这个错误提前了吗
雅......你们所有人都是对的....但我得到的是，它是一个SOAP请求，我已经仔细地看到了请求，没有坏人.....但问题是是当我通过soap请求调用Web服务时，它将null作为一个respone，所以我得到错误..... 一旦Webservice正常工作......现在工作正常....感谢所有人
答案 0 :(得分：1)
这意味着在<?xml ...仔细查看之前xml中存在某些内容。还要检查没有不可见的字符（您可以在任何HEX编辑器中执行此操作）。有时，Windows记事本会在文件开头添加标记。
答案 1 :(得分：0)
解析器在实际XML本身启动之前查看字符数据。要么确保XML在XML启动之前不包含任何内容，要么让SAX解析器忽略它......
答案 2 :(得分：0)
尝试显示您实际正在解析的数据。也许在你的xml开始之前插入了一些不好的字符，或者你可能没有读到正确的文件。
答案 3 :(得分：0)