Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; 文件提前结束。

最近遇到个错误，先粘贴代码如下：

功能大致如下：

先指定一个路径的文件，如果文件不存在，则创建，如果存在，则清空文件内容。然后再写内容。

File xmlFile = new File("D:/Users/Administrator/workspace/CDMS/temp/Projects.xml");if (!xmlFile.exists()) {// 没有文件则创建xmlFile.createNewFile();} else {// 有文件则清空文件内容FileWriter fw = new FileWriter(xmlFile);fw.write("");fw.close();}// File xmlFile = CapitalWebServiceUtil.getAllProjectXml();try {InputStream is = new FileInputStream(xmlFile);byte[] bytes = new byte[100];String xmlStr = "";int temp;while ((temp = is.read(bytes)) != -1) {xmlStr += new String(bytes, 0, temp);}

错误信息如下：

信息: Reloading Context with name [/CDMS] is completedjavax.xml.bind.UnmarshalException - with linked exception:[org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; 文件提前结束。]at javax.xml.bind.helpers.AbstractUnmarshallerImpl.createUnmarshalException(AbstractUnmarshallerImpl.java:335)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.createUnmarshalException(UnmarshallerImpl.java:563)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:249)at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:214)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:157)at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:214)at com.esoon.cdms.util.JaxbUtil.xml2Java(JaxbUtil.java:37)at com.esoon.cdms.action.ProjectAction.getAllProject(ProjectAction.java:130)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)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:141)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)