2014-4-8 11:31:32 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet default threw exception java.lang.IllegalStateException at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407) at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:770) at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:505) at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1774) at java.lang.Thread.run(Thread.java:662)
后台代码:
public String downloadKeyPairCSR() { PrintWriter out = null; try { byte[] byteCSR = session.get("CSR_KEYPAIR"); servletResponse = ServletActionContext.getResponse(); servletResponse.setContentType("application/octet-stream"); servletResponse.setCharacterEncoding("UTF-8"); out = servletResponse.getWriter(); servletResponse.setHeader("content-disposition", "attachment; filename=\"" + ParamConst.FILENAME_USERDB_CONFIG + "\""); out.append(byteCSR.toString()); out.close(); //return null; /*adminLogService.logAdminActivity(userName == null ? null : userName, null, ParamConst.MENUS_CERTIFICATE_INFO, ParamConst.ACT_DCSR, ParamConst.SUCCESS, ExceptionMessage.CERT_CREATE_DCSR_SUCCESS, logDTO);*/ } catch (Exception e) { /*adminLogService.logAdminActivity(userName == null ? null : userName, null, ParamConst.MENUS_CERTIFICATE_INFO, ParamConst.ACT_DCSR, ParamConst.FAILURE, e.getMessage(), logDTO);*/ return this.submitException(e); } return SUCCESS; }
解决办法: 不能放回 SUCCESS, 返回 null 即可,原因待测。。。
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