scriptlet

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 8 years ago . I hope you understand the question. What do you think? If I post some code here with scriptlet I'm convinced that you're going to tell

问题 I realize that when you submit the form in a jsp, in the mapped servlet you can get the desired data, set it in the proper scope(say request) and forward it to jsp like this: request.setAttribute("myList", myList); // Store list in request scope. request.getRequestDispatcher("/index.jsp").forward(request, response); However am wondering for pages which doesn't have a form or in other words we want to display data as soon as page loads, how can we efficiently load the data without using

问题 How to get the path of my current project : it's a dynamic web application created with maven archetype . I want to retrieve the path in my jsp page in scriptlet code , i used different codes but i'm always getting the path of eclipse (C:\Users\Amira\Desktop\eclipse\eclipse) or the path of the web application on tomcat ((C:\software\apache-tomcat-7.0.28\apache-tomcat-7.0.28\wtpwebapps\TestProjectUI) but i want the path of the project in my workspace : C:\Users\Amira\junoWorkspace

问题 How to get the path of my current project : it's a dynamic web application created with maven archetype . I want to retrieve the path in my jsp page in scriptlet code , i used different codes but i'm always getting the path of eclipse (C:\Users\Amira\Desktop\eclipse\eclipse) or the path of the web application on tomcat ((C:\software\apache-tomcat-7.0.28\apache-tomcat-7.0.28\wtpwebapps\TestProjectUI) but i want the path of the project in my workspace : C:\Users\Amira\junoWorkspace

问题 I am looking for a quick and dirty way to allow a user to enter something in a text field, click a button, and have some results be displayed based on what is entered. How do I accomplish this with scriptlets in a jsp? Thanks. 回答1: You can't make scriptlets (java code snippets in <% %> ) execute in any other moment than the moment when the server is preparing the jsp to be rendered. In case you want to get the results server-side, you could, for instance: Put that textfield inside a form,

问题 While working with JSP files and servlets , I came across <% … %> and <%= … %> . What's the difference between both cases ? Thanks 回答1: <%= … %> will echo out a variable, where as <% … %> denotes a script or some code that is executed. Here are the links to the jsp documentation: Expression ( <%= … %> ) : http://java.sun.com/products/jsp/tags/11/syntaxref11.fm4.html Scriptlet ( <% … %> ) : http://java.sun.com/products/jsp/tags/11/syntaxref11.fm5.html 回答2: <%= new java.util.Date() %> is same

问题 I have: A managed bean called "LoginBean". A JSF page called "login.xhtml" In this jsf page, i have a login form. Inside the managebean i have a loginCheck function. public void loginCheck(){ if(logincorrect){ //set user session }else{ //set lockout count session ++ } } What i want to do in my jsf page is that when the lock out count session == 2 (means users failed to login correctly 2 times, i need a recaptcha tag to be displayed. <td> <% if(FacesContext.getCurrentInstance()

问题 Is it possible to instantiate a class and then invoke its methods between scriptlets in JSP? I am getting errors and I don't know why (java class and methods are fine). Any other way to do the same (i just want a string from a method in a class)? 回答1: Yes of-course. You can create objects for your classes and access their methods between scriptlets in JSP like this. <% Foo foo = new Foo(); foo.method1(); %> Another way of doing this is using useBeans of jsp to instantiate the class and access

问题 Hi Can we assign scriptlet variable value to div id in jsp? Im trying like this in my jsp: <%int nc=1; %> <div id="nc"+<%=nc%> class="n_content active"> Some div content <%nc++;%> </div> <div id="nc"+<%=nc%> class="n_content" style="opacity: 1;"> Some div content <%nc++;%> </div> The output i wanted is <div id="nc1" class="n_content active"> Some div content <%nc++;%> </div> <div id="nc2" class="n_content" style="opacity: 1;"> Some div content <%nc++;%> </div> But Im unable to get this.. Can

问题 I need to get "filename" from a URL Here I am declaring <p:out var="path" value="${webObject.path}" scope="page"/> <c:set var="string1" value="${path}" /> <p:out value="${string1}" /> this returns "dir1/dir2/dir3/filename.xml" on the webpage What I need is a Java Scriptlet that takes the URL being produced (dir1/.../filename.xml) and gets the 'filename' with no directories in front and no .xml at the end. 回答1: Don't use Scriptlets . Use JSTL functions in EL. <c:set var="pathparts" value="${fn