场景重现
Apache POI
Linux
Tomcat
如上所示,当时在linux+tomcat的环境下,使用apache的poi导出excel的时候就会报“No such file or directory”的错误。
错误信息
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java.lang.RuntimeException: java.io.IOException: No such file or directory at org.apache.poi.xssf.streaming.SXSSFWorkbook.createAndRegisterSXSSFSheet(SXSSFWorkbook.java: 569 ) at org.apache.poi.xssf.streaming.SXSSFWorkbook.createSheet(SXSSFWorkbook.java: 558 ) at com.app.controllers.DrivingSchoolController.download(DrivingSchoolController.java: 106 ) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java: 25 ) at java.lang.reflect.Method.invoke(Method.java: 597 ) at com.mvc.invoke.ActionInvoker.invoke(ActionInvoker.java: 75 ) at com.mvc.MvcDispatcher.service(MvcDispatcher.java: 119 ) at com.mvc.MvcFilter.doFilter(MvcFilter.java: 67 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 243 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java: 210 ) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java: 222 ) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java: 123 ) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java: 502 ) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java: 171 ) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java: 99 ) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java: 953 ) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java: 118 ) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java: 408 ) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java: 1023 ) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java: 589 ) at org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java: 1810 ) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java: 886 ) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java: 908 ) at java.lang.Thread.run(Thread.java: 662 ) |
解决方案
咱们先说解决方案,因为解决的办法非常简单,只需要在tomcat的根目录下建一个“temp”的文件夹即可。
错误原因
之所以会出现这个错误,是因为poi默认将导出的excel导出到系统的临时目录,而当时那个linux的tomcat下不存在那个temp文件夹,所以就找不到目录了。其实不管是在什么系统环境下,只要tomcat根目录没有temp都会出现这个情况。看看下面poi的源码你就明白了。
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public void write(OutputStream stream) throws IOException{ for (SXSSFSheet sheet : _xFromSxHash.values()){ sheet.flushRows(); } //保存到临时目录 File tmplFile = File.createTempFile( "poi-sxssf-template" , ".xlsx" ); tmplFile.deleteOnExit(); FileOutputStream os = new FileOutputStream(tmplFile); _wb.write(os); os.close(); //Substitute the template entries with the generated sheet data files injectData(tmplFile, stream); tmplFile.delete(); } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://blog.csdn.net/liushuijinger/article/details/52511167