taglib

问题 This question already has answers here : EL expressions not evaluated in JSP (2 answers) Closed 4 years ago . I have a JSP page running on Tomcat 5.5. I have the following code: <c:forEach var="i" begin="1" end="10" step="1"> <c:out value="${i}" /> <br /> </c:forEach> The output I am getting is: ${i} ${i} ${i} ${i} ${i} ${i} ${i} ${i} ${i} ${i} I cant work out why the forEach loop is working but the output is not working. Any help any one could give would be great. 回答1: I know it's supposed

问题 I am currently trying to get CMake to run on my Windows 7 (64-bit) system. I want to compile TagLib for later use with a Qt application I am working on. I would like to compile it with MinGW (not Visual C++ as in this other question). I download the installer (cmake-2.8.3-win32-x86.exe) and install it (I also opt to add CMake to my path). I then go to the directory why the CMakeLists.txt file is and run cmake . . It then gives me this giant error. C:\Users\Joel\Downloads\taglib-1.6.3>cmake .

问题 I'm getting the duration of an MP3 file in this way: TagLib.File file = TagLib.File.Create(fileName); var duration = file.Properties.Duration; and it is consistently giving me a duration between 68 and 75% of the real duration. Windows File Manager, VLC and just playing the MP3 and measuring with a stopwatch agree on the other duration. Any ideas what's wrong here? 回答1: Turned out to be a bug: https://bugzilla.gnome.org/show_bug.cgi?id=605765 来源： https://stackoverflow.com/questions/1982716

问题 I am using spring mvc and in my jsp page I have a form with textarea. I want the textarea to be pre filled with some text (it is an edit feature for article). I tried the following. <form:textarea id="description" path="article.description" value="${article.description}" onKeyUp="validationmethod($(this));" onKeyDown="validationmethod($(this));" /> But my textarea is still empty.. the value="" attribute works perfectly fine for <form:input> but not for text area. if i try to put it betweeen

问题 I'm trying to create an el variable that is only available inside a tag so that it would be something like: <mytaglib:mytag> Foo is ${foo} </mytaglib:mytag> I've followed the documentation I can find for creating a nested el variable, however, ${foo} is available after the end of mytag. Shortened version of the .tld file is: <?xml version="1.0" encoding="UTF-8" ?> <taglib version="2.0" xmlns="http://java.sun.com/xml/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi

问题 I'm currently using Spring Security to manage login and sessions on my Struts2 application. To retrieve the logged user in a JSP page I'm using the sec tag lib by importing the following to my jsp. <%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags"%> So to print my logged user i use <sec:authentication property="principal.username" /> . I'm iterating through a java.util.List received through the action called, so a iterate it through something like this: <s:iterator

问题 In the old way, we put custom taglib description file at WEB-INF/xxx.tld, and JSP files load this file with <%@taglib prefix="xxx" uri="/META-INF/xxx.tld"%> When we use Spring boot and config the application completely with java code (no web.xml, xxx-servlet.xml etc.), where to put it? under resources/WEB-INF? or resources/META-INF? 回答1: Just drop your tld in /src/main/webapp/WEB-INF/ and reference it from your jsp using the uri. Example of tld located in /src/main/webapp/WEB-INF/ <?xml

问题 I am coding an application using Liferay 7 and OSGi modules. I need to create a custom taglib available across all modules (portlets), but I have litteraly no idea where to start. Do you have any idea? Should I store the taglib definition, classes and JSPs in an OSGi modules? And if not, where, and how can I reference it from a portlet module? Thank you very much 回答1: In most cases you should be able to deliver a taglib completely within an OSGi module. You can find several examples in

问题 When I tried to add <a4j:support> tag to JSF 2.0, I got the following error Tag Library supports namespace: https://ajax4jsf.dev.java.net/ajax, but no tag was defined for name: support How is this caused and how can I solve it? 回答1: The namespace URI https://ajax4jsf.dev.java.net/ajax is recognizable as the one from Ajax4jsf 1.x which existed in the prehistory, long before Ajax4jsf was acquired by RichFaces 3.x at 2006. Ajax4jsf 1.x is an ancient tag library which was targeted at JSF 1.1 on

问题 I am cofused between tagdir and uri used in taglib directive. What is the real difference between using tagdir and uri ? Examples : <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="notMyTags" %> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="otherTags" %> <%@ taglib tagdir="/WEB-INF/tags" prefix="myTags" %> to the best of my understanding: 1) I can access non-custom tags from the uri referencing them by the provided prefix (e.g.: if the uri defines the tag hello , in the page