导出文件时发生的错误，可能是因为文件过大？文件大概300MB，有时成功，有时报这个错误
java.io.IOException: APR error: -120001
at org.apache.coyote.http11.InternalAprOutputBuffer.writeToSocket(InternalAprOutputBuffer.java:292) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.InternalAprOutputBuffer.writeToSocket(InternalAprOutputBuffer.java:245) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.InternalAprOutputBuffer.flushBuffer(InternalAprOutputBuffer.java:214) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.InternalAprOutputBuffer.addToBB(InternalAprOutputBuffer.java:175) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.InternalAprOutputBuffer.access$000(InternalAprOutputBuffer.java:41) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.InternalAprOutputBuffer$SocketOutputBuffer.doWrite(InternalAprOutputBuffer.java:350) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:93) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:256) ~[tomcat-coyote.jar:8.0.47]
at org.apache.coyote.Response.doWrite(Response.java:491) ~[tomcat-coyote.jar:8.0.47]
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:391) ~[catalina.jar:8.0.47]
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:344) ~[tomcat-util.jar:8.0.47]
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:421) ~[catalina.jar:8.0.47]
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:409) ~[catalina.jar:8.0.47]
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:97) ~[catalina.jar:8.0.47]
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122) ~[na:1.8.0_74]
at magicsoft.base.io.IOUtils.copy(IOUtils.java:112) ~[bm-base-3.8.0-SNAPSHOT.jar:na]
at magicsoft.base.io.IOUtils.copy(IOUtils.java:89) ~[bm-base-3.8.0-SNAPSHOT.jar:na]
at magicsoft.jersey.common.UploadFiles.download(UploadFiles.java:60) ~[bm-jersey-3.8.0-SNAPSHOT.jar:na]
at magicsoft.jersey.common.UploadFiles.download(UploadFiles.java:36) ~[bm-jersey-3.8.0-SNAPSHOT.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_74]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_74]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_74]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_74]
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) ~[jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [jersey-common-2.22.2.jar:na]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [jersey-server-2.22.2.jar:na]
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [jersey-container-servlet-core-2.22.2.jar:na]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [jersey-container-servlet-core-2.22.2.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [jersey-container-servlet-core-2.22.2.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [jersey-container-servlet-core-2.22.2.jar:na]
at magicsoft.jersey.MyJerseyServlet.service(MyJerseyServlet.java:35) [bm-jersey-3.8.0-SNAPSHOT.jar:na]
at magicsoft.jersey.MyJerseyServletNTSW.service(MyJerseyServletNTSW.java:64) [classes/:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [jersey-container-servlet-core-2.22.2.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292) [catalina.jar:8.0.47]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.47]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-websocket.jar:8.0.47]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) [catalina.jar:8.0.47]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.47]
at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:123) [druid-1.1.6.jar:1.1.6]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240) [catalina.jar:8.0.47]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207) [catalina.jar:8.0.47]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212) [catalina.jar:8.0.47]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:94) [catalina.jar:8.0.47]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504) [catalina.jar:8.0.47]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141) [catalina.jar:8.0.47]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [catalina.jar:8.0.47]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620) [catalina.jar:8.0.47]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [catalina.jar:8.0.47]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:502) [catalina.jar:8.0.47]
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1132) [tomcat-coyote.jar:8.0.47]
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684) [tomcat-coyote.jar:8.0.47]
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2527) [tomcat-coyote.jar:8.0.47]
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2516) [tomcat-coyote.jar:8.0.47]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_74]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_74]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.47]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
