Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManagerat[Bug] A new bug

[alibaba]

Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManagerat[Bug] A new bug

[luchsh]

The problem was resolved after changing the JDK to Oracle

可以试试这里的几个方法，如果不行贴个testcase看看如何？

[YAGAMIL]

我就是用的jdk11啊，切换回jdk8肯定是好了，但是我整个项目就要迁移回jdk8了，使用oracle则没有这个问题，你们阿里的easy-excel用你们的龙井JDK11也会报这个异常的

[YAGAMIL]

Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:398) ~[na:na]
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:82) ~[na:na]
at java.base/java.security.AccessController.doPrivileged(Native Method) ~[na:na]
at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) ~[na:na]
at java.desktop/java.awt.Font.getFont2D(Font.java:497) ~[na:na]
at java.desktop/java.awt.Font.canDisplayUpTo(Font.java:2250) ~[na:na]
at java.desktop/java.awt.font.TextLayout.singleFont(TextLayout.java:469) ~[na:na]
at java.desktop/java.awt.font.TextLayout.(TextLayout.java:530) ~[na:na]
at org.apache.poi.ss.util.SheetUtil.getDefaultCharWidth(SheetUtil.java:275) ~[poi-3.17.jar!/:3.17]
at org.apache.poi.xssf.streaming.AutoSizeColumnTracker.(AutoSizeColumnTracker.java:117) ~[poi-ooxml-3.17.jar!/:3.17]
at org.apache.poi.xssf.streaming.SXSSFSheet.(SXSSFSheet.java:82) ~[poi-ooxml-3.17.jar!/:3.17]
at org.apache.poi.xssf.streaming.SXSSFWorkbook.createAndRegisterSXSSFSheet(SXSSFWorkbook.java:658) ~[poi-ooxml-3.17.jar!/:3.17]
at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java:679) ~[poi-ooxml-3.17.jar!/:3.17]
at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java:90) ~[poi-ooxml-3.17.jar!/:3.17]
at com.alibaba.excel.util.WorkBookUtil.createSheet(WorkBookUtil.java:66) ~[easyexcel-2.1.6.jar!/:na]
at com.alibaba.excel.context.WriteContextImpl.createSheet(WriteContextImpl.java:187) ~[easyexcel-2.1.6.jar!/:na]
at com.alibaba.excel.context.WriteContextImpl.initSheet(WriteContextImpl.java:167) ~[easyexcel-2.1.6.jar!/:na]
at com.alibaba.excel.context.WriteContextImpl.currentSheet(WriteContextImpl.java:114) ~[easyexcel-2.1.6.jar!/:na]
at com.alibaba.excel.write.ExcelBuilderImpl.addContent(ExcelBuilderImpl.java:56) ~[easyexcel-2.1.6.jar!/:na]
... 66 common frames omitted

[yuleil]

请尝试下 yum install fontconfig

[YAGAMIL]

请尝试下 yum install fontconfig

我使用的是龙井的dockers镜像的，

FROM registry.cn-shanghai.aliyuncs.com/dragonwell/dragonwell11:11.0.5.1-preview_alpine_x86_64
RUN rm -f /etc/localtime \
&& ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
&& echo "Asia/Shanghai" > /etc/timezone

这怎么安装，如果我切换回oracle的jdk就不会出现这个问题了

[luchsh]

请尝试下 yum install fontconfig

我使用的是龙井的dockers镜像的，

FROM registry.cn-shanghai.aliyuncs.com/dragonwell/dragonwell11:11.0.5.1-preview_alpine_x86_64
RUN rm -f /etc/localtime \
&& ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
&& echo "Asia/Shanghai" > /etc/timezone

这怎么安装，如果我切换回oracle的jdk就不会出现这个问题了

alpine 安装fontconfig可以在Dockerfile添加下面的代码，但是我不确定能不能解决你的问题，可以尝试下哈 :)

FROM registry.cn-shanghai.aliyuncs.com/dragonwell/dragonwell11:11.0.5.1-preview_alpine_x86_64
RUN  apk update && apk add fontconfig

[YAGAMIL]

请尝试下 yum install fontconfig

我使用的是龙井的dockers镜像的，

FROM registry.cn-shanghai.aliyuncs.com/dragonwell/dragonwell11:11.0.5.1-preview_alpine_x86_64
RUN rm -f /etc/localtime \
&& ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
&& echo "Asia/Shanghai" > /etc/timezone

这怎么安装，如果我切换回oracle的jdk就不会出现这个问题了

alpine 安装fontconfig可以在Dockerfile添加下面的代码，但是我不确定能不能解决你的问题，可以尝试下哈 :)

FROM registry.cn-shanghai.aliyuncs.com/dragonwell/dragonwell11:11.0.5.1-preview_alpine_x86_64
RUN  apk update && apk add fontconfig

我使用你的办法解决了这个NoClassDefFoundError: Could not initialize class sun.awt.X11FontManager的异常，但是在使用easyExcel的情况下又出现了另一个异常

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.poi.util.DocumentHelper (jar:file:/mat-user.jar!/BOOT-INF/lib/poi-ooxml-3.17.jar!/) to method com.sun.org.apache.xerces.internal.util.SecurityManager.setEntityExpansionLimit(int)
WARNING: Please consider reporting this to the maintainers of org.apache.poi.util.DocumentHelper
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2020-11-25 10:57:46.165 ERROR 1 --- [nio-8081-exec-7] c.m.b.core.controllers.ErrorController   : java.lang.InternalError: java.lang.reflect.InvocationTargetException

com.alibaba.excel.exception.ExcelGenerateException: java.lang.InternalError: java.lang.reflect.InvocationTargetException
	at com.alibaba.excel.write.ExcelBuilderImpl.addContent(ExcelBuilderImpl.java:67) ~[easyexcel-2.1.6.jar!/:na]
	at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:161) ~[easyexcel-2.1.6.jar!/:na]
	at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:146) ~[easyexcel-2.1.6.jar!/:na]
	at com.alibaba.excel.write.builder.ExcelWriterSheetBuilder.doWrite(ExcelWriterSheetBuilder.java:190) ~[easyexcel-2.1.6.jar!/:na]
	at com.matcloud.user.controllers.TeamController.excelExport(TeamController.java:144) ~[classes!/:1.0]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) ~[tomcat-embed-core-9.0.34.jar!/:9.0.34]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.6.RELEASE.jar!/:5.2.6.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.34.jar!/:9.0.34]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.34.jar!/:9.0.34]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.34.jar!/:9.0.34]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.34.jar!/:9.0.34]

同样，使用OracleJDK也不会出现这个异常，只是会报

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.poi.util.DocumentHelper (jar:file:/mat-user.jar!/BOOT-INF/lib/poi-ooxml-3.17.jar!/) to method com.sun.org.apache.xerces.internal.util.SecurityManager.setEntityExpansionLimit(int)
WARNING: Please consider reporting this to the maintainers of org.apache.poi.util.DocumentHelper
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

这个警告

[luchsh]

你使用的Oracle JDK的完整版本号能方便发一下吗？($OracleJDK/bin/java -version 这个命令的输出）

[YAGAMIL]

你使用的Oracle JDK的完整版本号能方便发一下吗？($OracleJDK/bin/java -version 这个命令的输出）

ORACLE-JDK:
java version "11.0.6" 2020-01-14 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.6+8-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.6+8-LTS, mixed mode, sharing)

Dragonwell-JDK
openjdk version "11.0.8" 2020-07-14
OpenJDK Runtime Environment (Alibaba Dragonwell) (build 11.0.8+9)
OpenJDK 64-Bit Server VM (Alibaba Dragonwell) (build 11.0.8+9, mixed mode)

[luchsh]

@yuleil 你那边有空试一下这些版本么？