java解析XML saxReader.read(xml) 错误：org.dom4j.DocumentException: no protocol

java解析XML saxReader.read(xml) 错误：org.dom4j.DocumentException: no protocol

完整错误信息：

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org.dom4j.DocumentException: no protocol: <?xml version="1.0" encoding="utf-8" ?><smil><subtitle visible="1" fontfamily="宋体" size="36" color="#FFFFFF" bgcolor="" opacity="0" scrollamount="0"><item id="0" beginpos="0"><![CDATA[fsdfsdf]]></item><item id="1" beginpos="0"><![CDATA[sdf]]></item><item id="2" beginpos="0"><![CDATA[sdf]]></item><item id="3" beginpos="0"><![CDATA[sdf]]></item><item id="4" beginpos="0"><![CDATA[sdf]]></item></subtitle></smil> Nested exception: no protocol: <?xml version="1.0" encoding="utf-8" ?><smil><subtitle visible="1" fontfamily="宋体" size="36" color="#FFFFFF" bgcolor="" opacity="0" scrollamount="0"><item id="0" beginpos="0"><![CDATA[fsdfsdf]]></item><item id="1" beginpos="0"><![CDATA[sdf]]></item><item id="2" beginpos="0"><![CDATA[sdf]]></item><item id="3" beginpos="0"><![CDATA[sdf]]></item><item id="4" beginpos="0"><![CDATA[sdf]]></item></subtitle></smil>    at org.dom4j.io.SAXReader.read(SAXReader.java:484)    at org.dom4j.io.SAXReader.read(SAXReader.java:321)    at com.xinghe.platform.action.ResEditorPublic.updateSubtitle(ResEditorPublic.java:307)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)    at java.lang.reflect.Method.invoke(Unknown Source)    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:177)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:143)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.xinghe.activate.filter.ActivateFilter.doFilterInternal(ActivateFilter.java:52)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)    at java.lang.Thread.run(Unknown Source)Nested exception: java.net.MalformedURLException: no protocol: <?xml version="1.0" encoding="utf-8" ?><smil><subtitle visible="1" fontfamily="宋体" size="36" color="#FFFFFF" bgcolor="" opacity="0" scrollamount="0"><item id="0" beginpos="0"><![CDATA[fsdfsdf]]></item><item id="1" beginpos="0"><![CDATA[sdf]]></item><item id="2" beginpos="0"><![CDATA[sdf]]></item><item id="3" beginpos="0"><![CDATA[sdf]]></item><item id="4" beginpos="0"><![CDATA[sdf]]></item></subtitle></smil>    at java.net.URL.<init>(Unknown Source)    at java.net.URL.<init>(Unknown Source)    at java.net.URL.<init>(Unknown Source)    at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)    at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)    at org.dom4j.io.SAXReader.read(SAXReader.java:465)    at org.dom4j.io.SAXReader.read(SAXReader.java:321)    at com.xinghe.platform.action.ResEditorPublic.updateSubtitle(ResEditorPublic.java:307)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)    at java.lang.reflect.Method.invoke(Unknown Source)    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:177)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:143)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.xinghe.activate.filter.ActivateFilter.doFilterInternal(ActivateFilter.java:52)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)    at java.lang.Thread.run(Unknown Source)Nested exception: java.net.MalformedURLException: no protocol: <?xml version="1.0" encoding="utf-8" ?><smil><subtitle visible="1" fontfamily="宋体" size="36" color="#FFFFFF" bgcolor="" opacity="0" scrollamount="0"><item id="0" beginpos="0"><![CDATA[fsdfsdf]]></item><item id="1" beginpos="0"><![CDATA[sdf]]></item><item id="2" beginpos="0"><![CDATA[sdf]]></item><item id="3" beginpos="0"><![CDATA[sdf]]></item><item id="4" beginpos="0"><![CDATA[sdf]]></item></subtitle></smil>    at java.net.URL.<init>(Unknown Source)    at java.net.URL.<init>(Unknown Source)    at java.net.URL.<init>(Unknown Source)    at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)    at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)    at org.dom4j.io.SAXReader.read(SAXReader.java:465)    at org.dom4j.io.SAXReader.read(SAXReader.java:321)    at com.xinghe.platform.action.ResEditorPublic.updateSubtitle(ResEditorPublic.java:307)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)    at java.lang.reflect.Method.invoke(Unknown Source)    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:177)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthorizationFilter.doFilterInternal(AuthorizationFilter.java:77)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.auth.filter.AuthenticationFilter.doFilterInternal(AuthenticationFilter.java:143)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at com.xinghe.activate.filter.ActivateFilter.doFilterInternal(ActivateFilter.java:52)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617)    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1521)    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1478)    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)    at java.lang.Thread.run(Unknown Source)

相关代码：

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SAXReader saxReader = new SAXReader();        Document xmlDoc = null;        try {            xmlDoc = saxReader.read(subtitleXml);        } catch (DocumentException e) {            // TODO Auto-generated catch block            e.printStackTrace();            this.outFailureJson(response, "解析xml失败:" + e.getMessage() + "!");            return;        }

错误行：xmlDoc = saxReader.read(subtitleXml);
subtitleXml是String类型，值为XML内容，在错误信息中可以看到完整的内容；

为什么发生这个错误？

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我们来看一下read方法的定义：

如果使用String类型的参数，传递的应该是一个URL或者是文件路径。
而我传递的是XML的内容。

解决方法

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知道了错误原因，解决就容易了

xmlDoc = saxReader.read(new ByteArrayInputStream(subtitleXml.getBytes("UTF-8")));