1、详细报错例如以下：
org.apache.commons.fileupload.FileUploadBase$IOFileUploadException: Processing of multipart/form-data request failed. D:MyEclipseworkspaceFileUploadWebRootuploadupload_920ae854_8fc7_426e_9db7_ebfdd77f469b_00000002.tmp (系统找不到指定的路径。) at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:351) at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:115) at com.you.file.servlet.FileUploadServlet.doPost(FileUploadServlet.java:44) at javax.servlet.http.HttpServlet.service(HttpServlet.java:647) at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.io.FileNotFoundException: D:MyEclipseworkspaceFileUploadWebRootuploadupload_920ae854_8fc7_426e_9db7_ebfdd77f469b_00000002.tmp (系统找不到指定的路径。) at java.io.FileOutputStream.open(Native Method) at java.io.FileOutputStream.<init>(FileOutputStream.java:179) at java.io.FileOutputStream.<init>(FileOutputStream.java:131) at org.apache.commons.io.output.DeferredFileOutputStream.thresholdReached(DeferredFileOutputStream.java:178) at org.apache.commons.io.output.ThresholdingOutputStream.checkThreshold(ThresholdingOutputStream.java:224) at org.apache.commons.io.output.ThresholdingOutputStream.write(ThresholdingOutputStream.java:128) at org.apache.commons.fileupload.util.Streams.copy(Streams.java:107) at org.apache.commons.fileupload.util.Streams.copy(Streams.java:70) at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:347) ... 20 more
2、错误原因
在“D:MyEclipseworkspaceFileUploadWebRoot”文件夹下没有upload文件夹
3、解决的方法
在“D:MyEclipseworkspaceFileUploadWebRoot”下新建目录“upload”