You’re making a conceptual mistake. JSF is not a view technology. JSF is a MVC framework. Exactly like as Spring MVC, albeit they have both a different ideology; JSF is component based MVC and Spring MVC is request based MVC. Thus they are full competitors. You cannot mix them. You should choose the one or … Read more
That can happen if request and/or response encoding isn’t properly set at all. For GET requests, you need to configure it at the servletcontainer level. It’s unclear which one you’re using, but for in example Tomcat that’s to be done by URIEncoding attribute in <Connector> element in its /conf/server.xml. <Connector … URIEncoding=”UTF-8″> For POST requests, … Read more
You’re trying to use Spring MVC’s form tag. This tag renders an HTML form tag and exposes a binding path to inner tags for binding. It puts the command object in the PageContext so that the command object can be accessed by inner tags. [..] Let’s assume we have a domain object called User. It … Read more
Simplest way: just let the link point to a JSP page and pass row ID as parameter: <a href=”delete.jsp?id=1″>delete</a> And in delete.jsp (I’m leaving obvious request parameter checking/validating aside): <% dao.delete(Long.valueOf(request.getParameter(“id”))); %> This is however a pretty poor practice (that was still an understatement) and due to two reasons: HTTP requests which modifies the data … Read more
In the web development world, the term “redirect” is the act of sending the client an empty HTTP response with just a Location header containing the new URL to which the client has to send a brand new GET request. So basically: Client sends a HTTP request to some.jsp. Server sends a HTTP response back … Read more
EL 3.0 or newer If you’re already on Java EE 7 / EL 3.0, then the @page import will also import class constants in EL scope. <%@ page import=”com.example.YourConstants” %> This will under the covers be imported via ImportHandler#importClass() and be available as ${YourConstants.FOO}. Note that all java.lang.* classes are already implicitly imported and available … Read more
javax.el.PropertyNotFoundException: Property ‘foo’ not found on type com.example.Bean This literally means that the mentioned class com.example.Bean doesn’t have a public (non-static!) getter method for the mentioned property foo. Note that the field itself is irrelevant here! The public getter method name must start with get, followed by the property name which is capitalized at only … Read more
(Updated Apr 2021) First of all, “Java EE” has since Sep 2019 been renamed to “Jakarta EE“, starting with version 8. Historically, there was also the term “J2EE” which covered versions 1.2 until 1.4. The “Java EE” covered versions 5 until 8. See also Java Platform, Enterprise Edition, History on Wikipedia. What exactly do I … Read more
You need to realize that Java/JSP is merely a HTML/CSS/JS code producer. So all you need to do is to just let JSP print the Java variable as if it is a JavaScript variable and that the generated HTML/JS code output is syntactically valid. Provided that the Java variable is available in the EL scope … Read more
Yes, i have doctype in web.xml <!DOCTYPE web-app PUBLIC “-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN” “java.sun.com/dtd/web-app_2_3.dtd”; > Remove that <!DOCTYPE> from web.xml and make sure that the <web-app> is declared conform Servlet 2.4 or newer and all should be well. A valid Servlet 3.0 (Tomcat 7, JBoss AS 6-7, GlassFish 3, etc) compatible web.xml look … Read more