JSP 文件下载时出现：Cannot forward after response has been committed

JSP 文件下载时出现：Cannot forward after response has been committedjava.lang.IllegalStateException:Cannot forward after response has been committed\x05at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:339)\x05at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:329)\x05at org.apache.jsp.get_005fycfxbg_jsp._jspService(get_005fycfxbg_jsp.java:939)\x05at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)\x05at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)\x05at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)\x05at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)\x05at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)\x05at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)\x05at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)\x05at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)\x05at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)\x05at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)\x05at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)\x05at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)\x05at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)\x05at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)\x05at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)\x05at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)\x05at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:284)\x05at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:322)\x05at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1714)\x05at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)\x05at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)\x05at java.lang.Thread.run(Thread.java:619)