![primefaces]( "primefaces")
I'm working in file downloading with Primefaces 4.0. I just want to trigger a JS function when download completes, but seems not to work (tried in Firefox and Google Chrome). My test case looks similar to what's done in the PF docs:<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:p="http://primefaces.org/ui"><h:head /><h:body> <script type="text/javascript"> function startMessage() { alert("Download started!"); } function finishMessage() { alert("Download finished!"); } </script> <h:form> <p:commandButton value="Download" ajax="false" icon="ui-icon-arrowreturnthick-1-s" onclick="PrimeFaces.monitorDownload(startMessage, finishMessage)"> <p:fileDownload value="#{bean.file}" /> </p:commandButton> </h:form></h:body></html>@ManagedBean@ViewScopedpublic class Bean implements Serializable { public StreamedContent getFile() { return new DefaultStreamedContent(new ByteArrayInputStream(new byte[0])); }}下载开始时触发警报，但下载完成时不触发.其他人可以尝试一下吗?The alert is triggered when download starts, but not when download finishes. Could anyone else give it a try?推荐答案这是一个错误.主要错误位于org.primefaces.component.filedownload程序包的FileDownloadActionListener中.The main bug is in FileDownloadActionListener of org.primefaces.component.filedownload package.第65行externalContext.addResponseCookie(Constants.DOWNLOAD_COOKIE, "true", Collections.<String, Object>emptyMap()); Constants.DOWNLOAD_COOKIE是"primefaces.download"，并且永远不会随响应一起发送.The Constants.DOWNLOAD_COOKIE is "primefaces.download", and it's never sent with the response.这将导致PrimeFaces.monitorDownload的时间间隔从不调用stop函数，因为从不写入cookie. That would cause PrimeFaces.monitorDownload's Interval to never call the stop function, since the cookie is never written. 这篇关于PrimeFaces.monitorDownload未触发JS函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 10-27 22:02