V9部署数科后使用下载功能报java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.setContentLengthLong(J)V
报错如下：
2022-06-30 21:14:11 错误 [apusic.web.web-reader./web-reader-Thread 219] 执行Servlet时发生错误。
java.lang.NoSuchMethodError: javax.servlet.http.HttpServletResponse.setContentLengthLong(J)V
at com.suwell.reader.v3.ServletAction.replyDownload(ServletAction.java:194)
at com.suwell.reader.v3.impl.doc.Download.doDownload(Download.java:80)
at com.suwell.reader.v3.impl.doc.Download.doAction(Download.java:44)
at com.suwell.reader.v3.ReaderServlet.doGet(ReaderServlet.java:535)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at com.apusic.web.container.ServletComponent.service(ServletComponent.java:87)
at com.apusic.web.container.ServletFilterWrapper.doFilter(ServletFilterWrapper.java:38)
at com.apusic.web.container.FilterChainImpl.doFilter(FilterChainImpl.java:48)
at com.suwell.reader.v3.prometheus.HistogramFilter.doFilter(HistogramFilter.java:64)
at com.apusic.web.container.FilterComponent.doFilter(FilterComponent.java:65)
at com.apusic.web.container.FilterChainImpl.performFilter(FilterChainImpl.java:38)
at com.apusic.web.container.WebContainer.invoke(WebContainer.java:1166)
at com.apusic.web.container.WebContainer.doProcessRequest(WebContainer.java:947)
at com.apusic.web.container.WebContainer.processRequest(WebContainer.java:809)
at com.apusic.web.http.VirtualHost.processRequest(VirtualHost.java:370)
at com.apusic.web.http.HttpServer.processRequest(HttpServer.java:317)
at com.apusic.web.http.HttpConnectionHandler.service(HttpConnectionHandler.java:26)
at com.apusic.web.http.ConnectionHandler.processRequest(ConnectionHandler.java:360)
at com.apusic.web.http.ConnectionHandler.processConnection(ConnectionHandler.java:138)
at com.apusic.web.http.ConnectionHandler.run(ConnectionHandler.java:52)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
排查过程：了解到他们使用本机V9不会报此错误，查看现场环境的V9版本号如下：
他本机的V9版本号如下：
解决方法：此问题为V9版本bug,替换附件中的apusic.jar即可解决