jsp « Variable « JSP-Servlet Q&A

1. How do I dump a variable in JSP?    stackoverflow.com

I am currently attempting to modify some open source software in JSP and am unaware of the syntax. How does one dump a complex variable to the browser using JSP?

2. JavaScript removes slash from JSP variable    stackoverflow.com

Have JSP variable ${remoteFolder} It's value is \\file-srv\demo Use jQuery embedded in this JSP. jQuery resolves ${remoteFolder} variable as \file-srvdemo ,i.e. one slash is removed. How to remain initial value of this var? edited: when ${remoteFolder} ...

3. using javascript variable for jsp    stackoverflow.com

my code is like this:

ArrayList<Item> itemList = new ArrayList<Item>();
itemList = projr.getObjects(projectID);
if (itemList.size() != 0) {

<script type="text/javascript">
window.onload = function() {
for(var i = 0;i < <%=itemList.size()%>;i++){
    var azimuth=0;

4. checking whether the variable is true or not    stackoverflow.com

 function add(){
        <%if(empRecNum != null && !(empRecNum.equals("")))

5. is their any to assign or get Javascript variable to java variable?    stackoverflow.com

...... <% int s = (int) (Math.random() * 1000000); %> .................

<body bgcolor="<%=s%>">    ...

6. JSP Variable Accssing in JavaScript    stackoverflow.com

How can I access JSP variable in JavaScript.

7. Rhino variables in JSP    stackoverflow.com

I have this in my jsp:

    Scriptable scope = Context.enter().initStandardObjects();
    scope.put( "foo", scope,  Context.toObject( "foo", scope ) );

<script type="text/javascript">
   function doSomething() {

8. Turning a variable into a hyperlink    stackoverflow.com

I have a button on my .jsp page that I would like to act as a hyperlink, taking users to a particular webpage when clicked. I've got the following code in ...

9. using javascript variable inside the java function    stackoverflow.com

wanted a solution on how to access the javascript variable inside the java scope. In the below code, <%=toppings[k]%> k is a javascript variable how can i access that, I am getting a ...

10. How to use javascript variable in jsp    stackoverflow.com

I have a JSP file which calls a function sendInfo(arg1,arg2); written in javascript. Now I want to use the arg1 in another jsp file. I used the statement

but no use. Please help me, ...

11. How to compare javascript variable with Jsp variable?    stackoverflow.com

I want to compare a javascript variable with a jsp variable. How can I do this?

 function verify_details()
    var resourceId=document.getElementById("res").value;'
    <%! String ...

12. HTML/JSP Variables    stackoverflow.com

I am wondering is there anyway to define a variable in HTML/JSP. I googled very hard but couldn't find any resources on this. Basically in my html/jsp I am trying to ...

13. how to call inner class method or variable from outer jsp?    stackoverflow.com

this is my index.jsp page:


public class myclass{
  private final int foo = 42;

  public int getFoo() {
    return foo;
how to call myclass method or ...

14. Assign JavaScript variable to Java Variable in JSP    stackoverflow.com

Ello there, I'm trying to assign the value of a javascript variable to a java variable. But I don't have clue how to do this? Say for example I have this:


15. How to call a JSP variable inside a java class    bytes.com

I wrote a jsp page which has a drop down box and i have a submit button. Now when i select a value in the drop down box and click the ...

16. use javascript variable in JSP?    coderanch.com

Concepts of client and server side scripting can not allow you to use variables from client side on the server side. The question is the JSP is processing on the server side and AFTER that the result of it work (usually HTML and JavaScript) is sending to client and browser interpret it. So JSP doesn't use the variable of javascript. You ...

17. Can Javascript acces the variables defined in JSP.    coderanch.com

Firstly, if you declare your JSP variable like that (with the exclamation mark) then chances are your code won't be thread safe. You might want to read this The basic answer to you question is "No, you can't". JSP variable exist on the server and Javascript exists entirely on the browser. The only overlap is that the server outputs a bunch ...


I M NOT ABLE TO DEFINE VARIABLES IN JSP. I DEFINED USERTYPE/DESC BUT I M NOT ABLE ACCESS RESULTSET INTO THESE VARIABLES. the code is as under <%@ page language="java" session="true" import="java.sql.*" errorPage="err.jsp"%> <%@ page import="java.io.*"%> <%@ page import="java.util.*"%> <%@ page import="javax.servlet.*"%> <%@ page import="javax.servlet.http.*"%> <%! int UserTypeId; int UserType; String Desc; %> Update User

Update User

<% ...

20. Te4sting for uninitialised variables    coderanch.com

Hi there, I need to test for a session variable and display one bit of code if it has been initialised but another if it has not. I have tried the obvious ones ala if ((session.getValue("account_type").equals("Both") || session.getValue("account_type").equals("International Access"))) { out.println(""); } else { out.println(""); } But the same prob keeps coming ...

21. Intialize javascript variable using jsp    coderanch.com

22. scripting variables    coderanch.com

23. JavaScript variables in JSP    coderanch.com

Wayne, Richard is right. The JSP is all compiled and interpreted before the HTML and JavaScript is sent to the browser. The only way to get a Javascript value to the JSP for processing is to make a round trip to the server. If the value is something that is coming from user input you canuse javascript to process it, check ...

24. Use a JSP variable in JavaScript? Plz Help    coderanch.com

Firstly I am new to JavaScript. I have a JSP page. There is a chunk of JSP code that creates a String variable. On this page there is also a chunk of code that I was given with encode and decode functions. These functions take a pair of strings and encrypt them. 1 Of the stings that I need to use ...

25. Undefined variable or class name    coderanch.com

27. Application variables    coderanch.com

28. JS ---> JSP variables    coderanch.com

29. Changing variables dynamically    coderanch.com

30. Implicit variable "exception" is null    coderanch.com

I am new to jsp/servlets and I came across the following problem (Tomcat 4.1.18 + Apache 2.0 + RedHat 8.0): I would like all errors & exceptions to go to the following generic error page: ----------- /error-pages/error.jsp --------- <%@ page isErrorPage="true" %> Oops! We got an exception:

 <% if (exception != null) out.print(exception.getMessage()); else out.print("Just an error"); %> ...

32. explicit variables    coderanch.com

34. Variables in JSP    coderanch.com

in C/C++ you can do following : int a=0; // global variables void func() { int b = 5; a = b; // after this a's value is 5. } how do you write the same function in JSP so that a's value gets changed to 5. here is the sample code : <%! int a = 0 %> <%! void ...

35. Referencing classes and variables    coderanch.com

Hello all, I have written a class called BasketItems, which basically stores the title, artist, price and quantity of an item. Then another class - ShoppingBasket is used to store an instance of the basketItems class in a vector. However, the vector itself is not instantiated until a user adds an item (through a JSP page) to the basket, in which ...

37. Difference between %! and % when declaring variables in .jsp    coderanch.com

No... a declaration doesn't make it "static", just a regular attribute. You *can* declare static attributes/methods/etc. but you would have to explicitly declare them as static... it's not something implicit in the JSP declaration. Declaring a variable in a scriptlet tag defines it inside the _jspService() method, making it a local variable. Here's a look at the code that might be ...

39. problem with config implicit variable    coderanch.com

I have a simple jsp file which is supposed to print the servlet name and a parameter name when accessed form the config variable. I am using tomcat4.1. My Jsp file is as follows : <%@ page info="a hello world example" %> <%@ page language="java" %> <%@ page contentType="text/html;charset=ISO-8859-1" %> <%@ page pageEncoding="ISO-8859-1" ...

40. A better approach to declaring variables in JSPs    coderanch.com

Is there a better way to declare vars in jsps I have about 12 jsp pages where the below code is repeated for variables passed in to my taglibs. If I want to add a variable I have to do it in 12 places. Reg <%= int size; int maxRows; int nextRows; int showRows; int rowCount; String productTypeID; String dataType; String ...

42. reseting jsp variables    coderanch.com

if an error occurs in my jsp page i send the to a different jsp page informing them of the error and a link back to the same page. but the jsp doesnt respond to the new information, if they type in the same error. it only works if i restart the server. any ideas what is wrong?

43. how to use jsp variables in javascript    coderanch.com

44. Using script variables in JSP    coderanch.com

45. variables in jsp    coderanch.com

46. how counter variable works in jsp    coderanch.com

47. Java Script variable in JSP    coderanch.com

48. Appending Variables    coderanch.com

49. Assign Jsp variable to Javascript variable    coderanch.com

Muthiah, What you are doing is fine. You just forgot to add the quotes to the Javascript literal. var s = "<%=str%>"; Remember, you're not actually passing the value from the JSP realm to the Javascript realm. The output of your JSP's execution is Javascript code. The best way to get your head around this is to view the HTML source ...

51. how to append variable in JSP link    coderanch.com

52. Using JSP Code in a variable    coderanch.com

53. variable name standard for jsp    coderanch.com

54. how to use variable in javascript    coderanch.com

56. Create Variable Name Dynamically    coderanch.com

58. using JSP variable in java script    coderanch.com

It will not work in the context of the original question. The string will appear outside of the Javascript string literal and be interpreted as a Javascript variable name or cause Javascript syntax errors depending upon what the content of the string variable. [ July 17, 2006: Message edited by: Bear Bibeault ]

61. Variable    coderanch.com

62. JSP and run time variables.    coderanch.com

Hello, I will first brief my requirement. I have JSP pages which have Javascript alert boxes (for my own debugging purposes) scattered all over them. As a developer I am fine with these alert boxes, but other people who test the application are better off not seeing these alert boxes. It ANNOYS them :-). Now the question: ----------------- I am planning ...

63. Can Javascript variable store into JSP variable    coderanch.com

No, this is a frequent misconception and I had wondered the same thing back when I first started with jsp. Simply put, javascript is a client-side technology, so it executes on the client machine, while jsp is server-side, and executes on the server. So you see, there is no way to bridge the divide between javascript and jsp unless you make ...

64. implicit variables accessibility    coderanch.com

65. Javascript variable inside jsp scriplet    coderanch.com

66. Assigning JSP variable to JavaScript    coderanch.com

JSP and JavaScript can't really share data since JSP is server-side code ( it runs and creates the final HTML that the browser displays ) while JavaScript is client-side code which runs on the browser. The workaround, for values that will not change as the user work on a page is the method that Vassili Vladimir gave you above. You 'print' ...

70. retriving variable    coderanch.com

71. Can JSP use variable defined in another jsp ?    coderanch.com

Raj, I think I remember using <%@include%> and using variables defined in another JSP. (It's been a while since I've put variables in a JSP now that I know it is bad practice.) <%@include%> is a compile time construct which is why it works. happens at runtime which means the variables are not available since they are compiled separately. ...

73. How do you set a javascript variable from jsp?    coderanch.com

I know how to pass a variable value from javascript to jsp. But how can I set a javascript value from a jsp page? For example, I have an html page which contains a javascript variable. This page contains a form whose target is a jsp page

When this ...

74. Javascript prompt box and jsp variable    coderanch.com

Hi all, How can i take the users entry from a prompt (javascript) dialog box and assign it to a jsp to pass it to a bean. The reason is simple. I have a list of values that offers the possibility to add an extra option so i need to take the value and pass it Thanks Jeff

75. JSP Variables    coderanch.com

77. help with variable modifiers    coderanch.com

here is my problem basically: I have first a jsp with a form that when submitted runs some java code and in particular sets a stream variable(class variable) with pdf content. Now after the variable is set and the process finishes, I need to have access to the value of that variable when another form is submitted before that value is ...

79. how to use a variable in a jsp    coderanch.com

81. variable doesn't increment    coderanch.com

82. Setting up enviornment variables    coderanch.com

Hi, What is the best way to implement properties/variables for a Java EE application? I have an EJB which needs a list of variables whose values are needed for processing in EJB (say for example the JMS servers it needs to publish and various other application specific properties(there are around 50 properties)). At present, we have a xxx.cfg file which has ...

83. increment and decrement jsp variable    coderanch.com

84. Jsp variables    coderanch.com

85. Jsp/Javascript setting variables with selectable table issue    coderanch.com

Hello everyone, I have been trying to find a solution to my problem for over a week now, and have found no tutorials or examples that can help me out. I have created a selectable html table which highlights when clicked an such. I have a javascript function which processes my submit buttons(I have 3 which go to 3 different pages) ...

86. JSP variable typical problem    coderanch.com

Hi.. I have to get some values from a notepad file and show them in drop down list in my page. First ,I retrieved the node values and stored them in an ArrayList . I want to access these values in my JAVASCRIPT. I cant do that. Only the first value in the Arraylist is being populated many times. I even ...

87. JSP variable declarations    coderanch.com

89. JSP variable into javascript    coderanch.com

90. Using application wide variables on jsp's    coderanch.com

An application I'm working on uses the displaytag library and I'd like to set an application wide variable for the pagesize attribute: I'd like to replace the hard coded page size with something I can set once and read from all the pages. I was thinking as a key in my struts applicationresources.properties file but ...

91. Variables from classes    coderanch.com

type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: An exception occurred processing JSP page /Milestones/purchase.jsp at line 31 28: 29: int total = 0; 30: String name = session.getAttribute("name").toString(); 31: int price = Integer.parseInt(session.getAttribute("price").toString()); 32: String image = session.getAttribute("image").toString();; 33: total = total+price; 34: %> Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419) ...

93. Is there any possibility of declaring variable ?    coderanch.com

OK thanks i will fallow the mvc architecture .But what about the "property"(jsp:getProperty) is that a variable? I know it reference to the bean class variable can i call the property as a variable? And is there any Naming convention for scoped variables.If i use JSTL is there any naming convention for variables Thanks

94. JS variable In JSP    coderanch.com

95. how to call inner class method or variable from outer jsp?    coderanch.com

You don't. Firstly, the time to be putting Java code in a JSP is long past -- almost 10 years to be exact. Time to move on. Secondly, even when scriptlets were in vogue, using a JSP for such a purpose was not acceptable. Reusable code belongs in a Java class, not a JSP.

96. JSP and SSI interaction - Setting env.variables.    go4expert.com

Hi all, With regards to the following three questions, I tried "search engines", forum, books etc. but couldn't find any discussion online. 1) (I'm a Linux user, using Apache along with Tomcat) Is it possible for a jsp file to read a variable set by "SSI #set command" in a separate shtml file, and vice versa? 2) Is it at all ...

97. assigning the variable to textfeild    go4expert.com

sir i trying to update the recin the database .jsp page fetches the data from the databse .and place the data in to the text feild . im trying to genrate the the registration no in the text feild automatically. with code given below but it is not working well, i m using the code Code: <%@page import="java.sql.*"%> <% Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); ...

99. jsp variables    forums.oracle.com