scriptlet

Access Get parameter with a scriptlet

由 微笑、不失礼 提交于 2019-12-12 12:45:20
问题 I hava a url such as search.do?offset=20 offset sometimes is in the url sometimes not. When it is not in the URL i want it to be 0. i try, without success, to retrieve the value with a scriptlet as follows: <% Integer offset = (pageContext.findAttribute("offset")==null) ? new Integer("0") : new Integer((String) pageContext.findAttribute("offset")); %> Anyone knows what i am doing wrong? 回答1: You should use this instead. <% Integer offset = request.getParameter("offset") != null && request

How to convert java.util.date to required format in scriptlet

由 痞子三分冷 提交于 2019-12-11 16:44:31
问题 I have a transfer object being returned to the JSP after a search. It is having a java.util.Date field (e.g. private Date issueDate; ) I am accessing the data in TO using usebean tag and displaying the date as: <INPUT TYPE="text" readonly="readonly" NAME="issueDt" ID="issueDt" SIZE="45" value="<%=mySearchTO.getIssueDt()%>"> However, this is printing the date in the format say for e.g. MON JAN 31 00:08:00 IST 2011 I want the date to be printed simply as MM/DD/YYYY and in the cases where time

How do you mix up java with html and javascript?

由 天大地大妈咪最大 提交于 2019-12-11 15:02:30
问题 I have this little java project in which I have to use jsp files. I have an html with a login button that triggers the following function: var loginCall = "user/login"; var logoutCall = "user/logout"; var signupCall = "user/signup"; function login() { var login = baseUrl + loginCall + "?"; var loginFormElements = document.forms.loginForm.elements; login = addParam(login, USER_NAME, loginFormElements.userName.value, false); login = addParam(login, PASSWORD, loginFormElements.password.value,

How does a scriptlet pass an array to a JSTL tag?

由 我怕爱的太早我们不能终老 提交于 2019-12-11 08:08:11
问题 I thought <%= %> is supposed to evaluate to a string when used in the context of JSTL 1 . But this does not seem to be the case in the code below: <c:forEach var="item" items="<%= new Object[] { 1, 2, 3 } %>"> Item: ${item} </c:forEach> To my surprise, the <c:forEach> tag actually iterates over the array inside the scriptlet: Item: 1 Item: 2 Item: 3 Can someone please explain this behavior? Thanks! References test attribute in JSTL <c:if> tag 回答1: Answering my own question after some reading.

Is there a problem using scriptlet tags for aspx page?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-11 06:17:48
问题 I have made an aspx page in which much of the content gets generated on the logic that I have written in scriptlet tags. For eg <% foreach(var data in dataCollection) { int i=0; %> <div>Enter value :   <input id="<%=i %>" type="text" /></div> <% } %> like this I have built the whole page based on the logic of how the data is coming from back and how the data is to be appropriately shown on the page. So, is there an issue with having scriptlets in aspx page? Is there something like best

Convert String to Integer JSP

由 ￡可爱￡侵袭症＋ 提交于 2019-12-11 03:59:16
问题 I am a beginner using JSP. I want to display a list of incrementing integers using a maximum range of the users choice. Entering: 6 should display the following: number 1 number 2 number 3 number 4 number 5 number 6 input.jsp <body> <input type="number" name="numberMax" required> <input type="submit" value="submit"> </body> jspResult.jsp <body> <% int numberMax = request.getParameter("numberMax"); // Cannot convert from String to int %> for (int i = 1; i <= numberMax; i++) { %> <ul> <li><%= i

Getting data from servlet and printing in jsp

由 大城市里の小女人 提交于 2019-12-10 22:17:24
问题 I Need Help Regarding How to Print ResultSet Which i Am Getting From Servlet in Jsp Here Is The Servlet Code: import java.io.IOException; import java.io.PrintWriter; import java.sql.Connection; import java.sql.ResultSet; import java.sql.Statement; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession;

rpm scriptlet ordering for install/remove/upgrade using yum

由 二次信任 提交于 2019-12-09 06:09:46
问题 I'm working on a bug in our rpm scriptlets which is probably originating from order in which our scriptlets are executed during package install/removal/upgrade. We are using yum on Redhat Enterprise. Obviously I first need a good understanding of the order of the rpm scriptlets - and interestingly enough I have not found a good summary of this anywhere. From what I gather this is the scriptlet ordering for upgrades : %pretrans of new package %pre of new package prein package install %post of

JSP and scriptlets

由 心已入冬 提交于 2019-12-08 19:34:00
问题 I know that using scriptlets are considered taboo nowadays. Its okay and I will agree to the Top Star's words (as I am just a novice in Java at the moment). What I have heard so far is, its to make the designers life easier. But I wonder, if it has anything to do with performance of JSP pages. On the other hand, if its just for "making designers life easier", what do you guys think about using scriptlets in a situation where Java developer do both the work ? If scriptlets are bad in all

JSP - what's the difference between “<% … %>” VS “<%= … %>”

由 删除回忆录丶 提交于 2019-12-05 07:15:24
While working with JSP files and servlets , I came across <% … %> and <%= … %> . What's the difference between both cases ? Thanks Cristian <%= … %> 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 <%= new java.util.Date() %> is same as <% out.println(new java.util.Date()) %> There are three types of Scriptlets : Scriptlet Expressions of
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