严重: Servlet.service() for servlet [springMvc] in context with path [/outHelp] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is org.apache.commons.fileupload.FileUploadBase$IOFileUploadException: Processing of multipart/form-data request failed. Unexpected EOF read on the socket] with root cause

java.io.EOFException: Unexpected EOF read on the socket

at org.apache.coyote.http11.InternalNioInputBuffer.fill(InternalNioInputBuffer.java:152)

at org.apache.coyote.http11.InternalNioInputBuffer$SocketInputBuffer.doRead(InternalNioInputBuffer.java:177)

at org.apache.coyote.http11.filters.IdentityInputFilter.doRead(IdentityInputFilter.java:110)

at org.apache.coyote.http11.AbstractInputBuffer.doRead(AbstractInputBuffer.java:364)

at org.apache.coyote.Request.doRead(Request.java:476)

at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:344)

at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:395)

at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:369)

at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:190)

at org.apache.commons.fileupload.MultipartStream$ItemInputStream.makeAvailable(MultipartStream.java:999)

at org.apache.commons.fileupload.MultipartStream$ItemInputStream.read(MultipartStream.java:903)

at java.io.InputStream.read(Unknown Source)

at org.apache.commons.fileupload.util.Streams.copy(Streams.java:100)

at org.apache.commons.fileupload.util.Streams.copy(Streams.java:70)

at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:347)

at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:115)

at org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest(CommonsMultipartResolver.java:156)

at org.springframework.web.multipart.commons.CommonsMultipartResolver.resolveMultipart(CommonsMultipartResolver.java:139)

at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1047)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:892)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915)

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:822)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1539)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1495)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Unknown Source)