easypoi导出excel不兼容openjdk11字体问题
一、问题来源
最近做一个导出路面感知数据到excel的功能，核心导出代码如下：
ServletOutputStream out = null; String result = null; try { if (CollectionUtils.isNotEmpty(list)) { //使用EasyPoi导出时，openjdk11字体不支持 String fileName = "wifi_record_" + DateUtils.format(new Date(), DateUtils.DATE_TIME_FORMAT_YYYYMMDDHHMISS); ExportParams exportParams = new ExportParams("WIFI轨迹", "WIFI轨迹", ExcelType.XSSF); Workbook workbook = ExcelExportUtil.exportExcel(exportParams, WifiVo.class, list); out = response.getOutputStream(); response.reset(); response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8") + ".xlsx"); response.setContentType("application/msexcel"); workbook.write(out); out.flush(); out.close(); } else { result = "没有需要导出的数据！"; } } catch (Exception e) { logger.error("WIFI轨迹导出失败！", e); result = "WIFI轨迹导出失败！"; }
使用了easypoi中ExcelExportUtil工具类的exportExcel方法，本地windows开发环境使用的是jdk1.8，测试没有问题，发布linux环境之后报错如下：
2022-04-13T17:52:02.470+08:00 INFO ctm01favorite.ctm01favorite [http-nio-8866-exec-8] [c.h.s.c.e.StarfishGlobalExceptionHandler$$EnhancerBySpringCGLIB$$c5e30291:121] <8b3bbb91bb4fd066,8b3bbb91bb4fd066> - [info={}] Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.InternalError: java.lang.reflect.InvocationTargetException at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1053) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) 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:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:242) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:237) at com.hikvision.sso.client.filter.HikCas20ProxyReceivingTicketValidationFilter.doFilter(HikCas20ProxyReceivingTicketValidationFilter.java:193) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:242) at com.hikvision.sso.client.filter.HikAuthenticationFilter.doFilter(HikAuthenticationFilter.java:60) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:80) 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:99) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at com.hikvision.starfish.security.web.filter.HttpRequestMehtodFilter.doFilter(HttpRequestMehtodFilter.java:48) 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:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 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.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.cloud.sleuth.instrument.web.ExceptionLoggingFilter.doFilter(ExceptionLoggingFilter.java:50) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at brave.servlet.TracingFilter.doFilter(TracingFilter.java:82) 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:128) at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:66) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:103) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:121) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:808) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$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.InternalError: java.lang.reflect.InvocationTargetException at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:86) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) at java.desktop/java.awt.Font.getFont2D(Font.java:497) at java.desktop/java.awt.Font.canDisplayUpTo(Font.java:2250) at java.desktop/java.awt.font.TextLayout.singleFont(TextLayout.java:469) at java.desktop/java.awt.font.TextLayout.<init>(TextLayout.java:530) at org.apache.poi.ss.util.SheetUtil.getDefaultCharWidth(SheetUtil.java:273) at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:248) at org.apache.poi.ss.util.SheetUtil.getColumnWidth(SheetUtil.java:233) at org.apache.poi.xssf.usermodel.XSSFSheet.autoSizeColumn(XSSFSheet.java:551) at cn.afterturn.easypoi.excel.export.ExcelExportService.createSheetForMap(ExcelExportService.java:221) at cn.afterturn.easypoi.excel.export.ExcelExportService.createSheet(ExcelExportService.java:179) at cn.afterturn.easypoi.excel.ExcelExportUtil.exportExcel(ExcelExportUtil.java:116) at com.hikvision.js.ctm01favorite.service.impl.RoadFeelQueryServiceImpl.exportWifi(RoadFeelQueryServiceImpl.java:284) at com.hikvision.js.ctm01favorite.controller.RoadFeelQueryController.exportWifi(RoadFeelQueryController.java:124) 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:189) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ... 73 common frames omitted Caused by: java.lang.reflect.InvocationTargetException: null at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:84) ... 99 common frames omitted Caused by: java.lang.NullPointerException: null at java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262) at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:225) at java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:107) at java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:719) at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:367) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.desktop/sun.font.SunFontManager.<init>(SunFontManager.java:312) at java.desktop/sun.awt.FcFontManager.<init>(FcFontManager.java:35) at java.desktop/sun.awt.X11FontManager.<init>(X11FontManager.java:56) ... 104 common frames omitted
简单来说就是字体不支持。
二、解决方法
放弃使用easypoi，自己使用POI类库编写导出功能，问题解决。
三、总结
网上搜索得知可以在linux上安装字体解决字体不支持的问题，但生产环境一般都是公安网环境，不便于后续发布现场，因此没有采用该方案。
