w3hello.com logo
Home PHP C# C++ Android Java Javascript Python IOS SQL HTML videos Categories
  Home » JSP » Page 1
HttpContext.Current.Session equivalent in Spring MVC
In Spring MVC/Spring Security you can make use of the AuthenticationPrincipal annotation which resolves given argument to the current authenticated user. @RequestMapping("/user") public String show(@AuthenticationPrincipal CustomUser customUser) { // do something with CustomUser return "view"; } Under the hood current authentication is fetched from the SecurityContext: Authentication a

Categories : Jsp

Get the request sending URL in spring
Assuming you have access to the HttpServletRequest Object, just call response.getRemoteAddr() which returns the remote host's ip represented as a string. See here

Categories : Jsp

Prepare is not called after validation fail
The prepare() method is called BEFORE validation so the validate() method cannot be the problem For more info look at this page

Categories : Jsp

ReCaptcha JSP 'Cannot load URL' on processing
Yes it is the problem with your network connectivity . You can conclude it by checking your connection with google.com. If you are able to connect with google in your browser amidst of the firewall , you can successfully run the captacha code

Categories : Jsp

how to use variable of one JSP to othe JSP
You have to use sessions for this. Here is an example. the html page- <HTML> <BODY> <FORM METHOD=POST ACTION="SaveName.jsp"> What's your name? <INPUT TYPE=TEXT NAME=username SIZE=20> <P><INPUT TYPE=SUBMIT> </FORM> </BODY> </HTML> SaveName.jsp - <% String name = request.getParameter( "username" ); session.setAttribute( "theName", n

Categories : Jsp

Redirecting the JQgrid after editing row
You simply call the user defiend function editLink in colModel and you can pass the id of the edited record in editLink function. Here is the answer of your question How to navigate to another page when click on edit in jqgrid

Categories : Jsp

Understanding how to use JSP EL expressions to access properties of a Object
You pass the value for the HelloBean(String test) constructor. As your String name is the global variable for the class HelloBean. the syntax ${test["name"]} will interpret the name value. It is equivalent to the java's ObjName.VariableName which will print its value.You could try it as ${name} which will throw InvalidProperyException on the setter and getter errors. This Can JSP EL do direct a

Categories : Jsp

Displaytag calling servlet with parameter value
After diddling around and noticed a lot of people having the same issue. Obviusly the table generated above will always pass as a parameter the first userId inside the users list. There are two suggested solutions to generating dynamic links with displaytag as suggested here: http://demo.displaytag.org/displaytag-examples-1.1/example-decorator-link.jsp Using the struts-like approach i added the

Categories : Jsp

injecting EJB into JSP
It's bad idea from design point, but anyway you can get it via lockup in jndi. Like: AddressService addressService = (AddressService) new InitialContext().lookup("java:comp/env/AddressService");

Categories : Jsp

Why are in JavaBeans the setter Public (JSP EL)
If you use MVC it is recommended to encapsulate the setter (private). This because MVC discribes that your view does NOT change the model but the controller should do this. You can use ${model.property = 100}, which requires public setter Allthough in the MVC it is recommended to private the setter

Categories : Jsp

Using if-else in JSP
It's almost always advisable to not use scriptlets in your JSP. They're considered bad form. Instead, try using JSTL (JSP Standard Tag Library) combined with EL (Expression Language) to run the conditional logic you're trying to do. As an added benefit, JSTL also includes other important features like looping. Instead of: <%String user=request.getParameter("user"); %> <%if(user == nu

Categories : Jsp

Getting null while accessing initParameter in jsp
If your JSP file name is config.jsp it should work. A case in which you can get a null value is when you write following: <% String user=config.getInitParameter("User"); out.print("Hello "+user);%> In JSP which is not config.jsp. So please cross-check your JSP's name and It should be directly under WebContent in your project.

Categories : Jsp

What are the output comment and hide comment in jsp?
Output Comment: A comment that is sent to the client in the viewable page source(it is appear in the output). <!-- output comment --> Hidden Comment: A comments that documents the JSP page but is not sent to the client(it is not appear in output ). <%-- hidden comment --%>

Categories : Jsp

Only html of jsp page are rendered , jsp tags displays as it as
It looks like you are sending the file directly via your code by email and looking at the email in your inbox of your email client. In order for the .jsp file to be properly parsed it must be processed by a servlet engine like Tomcat, Glassfish, WebLogic, etc… .jsp file are processed by the servlet engine and then the proper HTML is rendered in the view to be displayed in a browser or email cl

Categories : Jsp

Pass Attribute to another attribute
Like what rickz said, you have to use c:set tag to pass value of testData. Also set the type of scope you want, in this case request. <c:set var="outputData" scope="request" value="${testData}"/> Heres a reference.

Categories : Jsp

How to send jsp page as a content of email from servlet?
Since the jsp/servlet/chain can be adding dynamic content, the only real way is to grab the resultant HTML from the URL using something like: URL url = new URL("http://www.oracle.com/"); byte[] html; try (InputStream in = new BufferedInputStream(url.openStream()); ByteArrayOutputStream bout = new ByteArrayOutputStream();) { byte[] buffer = new byte[512]; int read = 0; while ((read =

Categories : Jsp

Encoding with UTF-8 does not work in JSP
You need to set the default parameter encoding, which can be configured via the Sling Main Servlet settings, i.e — http://localhost:4502/system/console/configMgr/org.apache.sling.engine.impl.SlingMainServlet The last option, sling.default.parameter.encoding should be set to UTF-8, or else it will fall back to the default, as specified in the help text: The default request parameter encod

Categories : Jsp

In jsp: String cannot be resolved to a type
Try switching to a fresh workspace and importing your project and see if the problem persists. If so, I suggest re-installing MyEclipse because it looks like the java validation is screwed up somehow. Alternatively, maybe starting MyEclipse with the -clean option might help (add "-clean" at the top of the myeclipse.ini file). Remove the option if that fixes it, as it slows down the launch. Failin

Categories : Jsp

Failed to load resource files
The url pattern / is is used by default servlet which is capable of loading static resources that isn't mapped by other servlets. When you switched to this pattern it's stopped working. So, you should keep a servlet mapping. <servlet-mapping> <servlet-name>Servlet</servlet-name> <url-pattern>/Servlet</url-pattern> </servlet-mapping> If you want to sta

Categories : Jsp

Servlet request.getParameter() always returning “null”
I have Changed 'POST' to 'GET' and apparently the problem was solved: JSP : <FORM method="GET" action="eimLoggingServlet"> Execution Id <b><INPUT type="text" name="Execution_Id" size="10"> <INPUT type="submit" name="submit" value="Find log"> </FORM> Servlet : public class EimLoggingServlet extends HttpServlet { private static final long seri

Categories : Jsp

Glassfish 4.1 Bug : session.invalidate nullpointer exception
Even though you are not leveraging bean injection into you application, creating a beans.xml file (without the need to declare any bean inside) with below content under "src/main/webapp/WEB-INF/" have resolved the issue for me once: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:sch

Categories : Jsp

Can you put MySql database and JSP pages on Arduino
The Arduino is a microcontroller that is powered by microprocessors from the comapny Atmel's Atmega series. It is a very small computer with very less memories. Essentially Arduino has total memory in the range of 32kb and RAM in the range of 1kb or 2kb depending on the model. It is used for hardware projects. Why would you want to store Mysql database and JSP pages on it. These are part of web ap

Categories : Jsp

What to do with css for JSP fragment?
Is there 'link' the css to header.jspf and everytime I include the header, the server automatically knows it should include that css for the header jspf files are not compiled on their own so it needs to be executed with other jsp files. You can include the common css and js files in the common.jsp so that all other files which uses header.jspf will lose the burden of linking the common

Categories : Jsp

and behaves differently
Struts2 checkbox tag behave differently than its analog in Struts1. And as you have mentioned Struts2 creates two input fields for a single checkbox - one for checked value, and other for unchecked value. Then passing one of them that is checked. The default stack of interceptors include checkbox interceptor that handles submitted values. If you are using Struts2 checkbox and want to use field val

Categories : Jsp

Dynamically populate select input without duplicate values using JSTL
I will not suggest you to do this but here is some code to achieve what you want: <select id="floorFilter"> <option value=""></option> <c:forEach var="room" items="${rooms}" varStatus="status"> <c:set var="floorAlreadyExists" value="${false}" /> <c:if test="${(status.index - 1) > 0}"> <c:forEach var="previousRoom" items

Categories : Jsp

Invalid string or buffer length
Despite it seeming like a datatype issue, this is a common error message if you are working on a 64 bit system using the jdbc/odbc bridge. If I'm not mistaken the jdbc:odbc bridge uses an older 32-bit ODBC driver which gets all janky when used in a 64 bit environment (which I'm guessing you are working in). The recommendation is to find a more suitable and up-to-date JDBC driver like http://msdn

Categories : Jsp

how to stop XSS from non string parameter
Basically, the XSS attack happens at client side inside the browser at user end. The definition from Wikipedia: Cross-site scripting (XSS) is a type of computer security vulnerability typically found in Web applications. XSS enables attackers to inject client-side script into Web pages viewed by other users. So, the data type used for nameId parameter at server side is not a concern o

Categories : Jsp

How to add Date Picker in JSP
Adding a date picker to a JSP page is not specifically connected to JSP. You may do this as doing with plain HTML markup. To add a date picker, you have to choose a good Javascript date picker. As far as I know JqueryUI date picker is good. Here is another demo with Jquery Mobile.

Categories : Jsp

Best approach to populate a JSP dropdown with fixed/static list of values
Are you using a framework such as Struts or Spring MVC? The general approach to do this is to declare and initalise the array in your class file and create getters and setters. Then in your JSP iterate through the array and add options to your dropdown dynamically. For example Create array with predefined values String[] myArray = {"option1", "option2", "option3"}; Create getters and setter

Categories : Jsp

jsp jstl servlet (database table has two rows but jsp displays last row twice)
You're only creating one PostJob instance, and adding this unique instance several times in the collection, changing its value at each iteration. The call to new PostJob() should be made at each iteration: while(rs.next()){ PostJob p = new PostJob(); ... viewList.add(p); }

Categories : Jsp

JSP/JSTL : Initialize Multiple variables in one statement
No you cant do that . c:set is jstl tag interpreted as tags when executed , not like your java statements Name of the exported scoped variable to hold the value specified in the action. The type of the scoped variable is whatever type the value expression evaluates to. says c:set docs.

Categories : Jsp

org.apache.catalina.LifecycleException after adding apache file uploading library
Here is the answer of such problems: Tomcat server not starting when adding a specific servlet And as 'kolossus' said: tomcat can't still see the dependency. Place the commons jars in the /lib folder This is the answer.

Categories : Jsp

Optaplanner employee scheduler
There are many ways you can create a webapp in Java and use OptaPlanner in that webapp. Take a look at the JBoss developer guides. OptaPlanner is based on POJO's, so OptaPlanner doesn't care what techs you choose. Some opinionated choices: I'd use JPA-Hibernate to connect to that MySql database JAXB-RestEasy to expose REST services Frontend either GWT or AngularJS. With some Twitter Bootstrap t

Categories : Jsp

Get checked Radio Button Value from JSP to Servlet
Hope you have code similar to this then it'll give you value of a <form action="/Servlet" method="post"> <input type="radio" value="10" name="a">10 Records <input type="radio" value="20" name="a">20 Records <input type="radio" value="50" name="a">50 Records // submit button here </form>

Categories : Jsp

Dropdown struts 2
You should remove Struts1 tags, that is enough. Struts2 can use JSTL so, you can cut your time on migration. <select name="activite" value="<c:out value='${form.activite}'/>" onchange="setActivite(form);" style="width:45px"> <option value=""><s:text name="form.date.jour" /></option> <c:forEach items="${jour}" var="varJour"> <c:if test="

Categories : Jsp

how to use cutom tags to preprocess data and store it in jsp hiddent input
First, you'll need to create a class to do the work of the custom tag. It should inherit from javax.servlet.jsp.tagext.SimpleTagSupport. If the desired output is a hidden html input tag, you'll probably want attributes for id and name. The user of the custom tag should provide these, so they become fields of the custom tag class with getters and setters. The user also will specifying which pro

Categories : Jsp

onpaste function does not work in jsp
There are no onpaste attribute for struts HTML tags <html:text />, perhaps you could add javascript function to it. <html:text name="form" property="name" id="name" onFocus="disablePaste()"/> ------ JAVASCRIPT ------ function disablePaste(){ var input = document.getElementById("name"); if (input) input.onpaste = function(){return false;}; }

Categories : Jsp

How to display Arabic word in java server page?
you need to set http response encoding style UTF8 like... <%@ page pageEncoding="UTF-8" %> Also see this article for more Reference here try this code may help you.

Categories : Jsp

Parameter values in request
You have to understand the life cycle of jsp , For every request submitted from browser , the container will generate the response to the it. so the request in no longer available in the client side to access once you submit your for successfully (differs clicking the submit button) Now if the Organisation and Mobile Number values are changed, are the values in the request corresponding

Categories : Jsp




© Copyright 2018 w3hello.com Publishing Limited. All rights reserved.