如何修复：docx到html的docx4j错误(java.lang.nullpointerexception)

mbjcgjjk  于 2021-07-03  发布在  Java
关注(0)|答案(1)|浏览(511)

我正在尝试使用docx4j、java11、springboot2.3.5、ubuntu18.04.5将docx转换为html，并在tomcat9上运行我的.war文件。
当我运行代码时，我得到这个错误。我怎样才能解决这个问题？
我的代码
参考文献：
使用docx4j将html导出到docx
https://github.com/plutext/docx4j-importxhtml/blob/master/src/samples/java/org/docx4j/samples/docxtoxhtmlandback.java

WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(new File(source));

 HTMLSettings htmlSettings = Docx4J.createHTMLSettings();
 htmlSettings.setWmlPackage(wordMLPackage);
 htmlSettings.setImageDirPath("temp_images");
 htmlSettings.setImageTargetUri("temp_images");
 htmlSettings.setImageIncludeUUID(false);

 boolean nestLists = false;
 if (nestLists) {
     SdtWriter.registerTagHandler("HTML_ELEMENT", new SdtToListSdtTagHandler());
 } else {
     // convert numberings to plain text
     htmlSettings.getFeatures().remove(ConversionFeatures.PP_HTML_COLLECT_LISTS);
 } 

 OutputStream os = new java.io.FileOutputStream(dest);
 Docx4J.toHTML(htmlSettings, os, Docx4J.FLAG_EXPORT_PREFER_XSL);

pom.xml文件：

<dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j</artifactId>
        <version>6.1.2</version>
    </dependency>

    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j-JAXB-ReferenceImpl</artifactId>
        <version>11.2.5</version>
    </dependency> 

    <dependency>
        <groupId>org.docx4j</groupId>
        <artifactId>docx4j-MOXy-JAXBContext</artifactId>
        <version>6.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>org.eclipse.persistence.moxy</artifactId>
        <version>2.7.7</version>
    </dependency>
    <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>eclipselink</artifactId>
        <version>2.7.7</version>
    </dependency>
    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.document.docx</artifactId>
        <version>2.0.2</version>
    </dependency>
    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.template.freemarker</artifactId>
        <version>2.0.2</version>
    </dependency>
    <dependency>
        <groupId>fr.opensagres.xdocreport</groupId>
        <artifactId>fr.opensagres.xdocreport.converter.docx.xwpf</artifactId>
        <version>2.0.2</version>
    </dependency>

日志文件：

org.docx4j.openpackaging.exceptions.Docx4JException: Exception exporting package
org.docx4j.openpackaging.exceptions.Docx4JException: Exception exporting package
        at org.docx4j.convert.out.common.AbstractExporter.export(AbstractExporter.java:106)
        at org.docx4j.Docx4J.toHTML(Docx4J.java:830)
        at com.home.converter.Xhtmlconv.startConveter(Xhtmlconv.java:141)
        at com.home.controller.myproject.shephard.GetController.getStartGenerateXhtml(GetController.java:1377)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126)
        at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64)
        at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.NullPointerException
        at org.docx4j.openpackaging.parts.WordprocessingML.ObfuscatedFontPart.deleteEmbeddedFontTempFiles(ObfuscatedFontPart.java:263)
        at org.docx4j.openpackaging.parts.WordprocessingML.FontTablePart.deleteEmbeddedFontTempFiles(FontTablePart.java:161)
        at org.docx4j.convert.out.common.AbstractExporter.export(AbstractExporter.java:90)
        ... 61 more

编辑：我试着在Tomcat9，Windows10上运行同样的战争，一切都正常。有趣。。。但是如何在linux tomcat上解决这个问题呢(检查了tomcat/linux，它们正常，没有损坏）

Javaspringdocxxhtmldocx4j

1条答案

按热度按时间
8ftvxx2r

8ftvxx2r1#

看起来您的tmpfontdir为空。
https://github.com/plutext/docx4j/blob/master/docx4j-core/src/main/java/org/docx4j/openpackaging/parts/abstractfontpart.java#l66 是什么决定了它。
考虑设置属性 docx4j.openpackaging.parts.WordprocessingML.ObfuscatedFontPart.tmpFontDir 因为您使用的是tomcat，所以将其设置为tomcat\u home/temp（替换其中的实际路径）。

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