el 1 « EL « JSP-Servlet Q&A

1. Deferred EL in JSP 2.0    stackoverflow.com

Is there a way to use something like deferred EL in JSP 2.0 / J2EE 1.4? The idea is to pass a test to a tag file and have it ...

2. Problem with JSP EL evaluation    stackoverflow.com

Why doesn't the following work:

<c:set var="formId" value="#${otherFormId}"/>
<c:set var="formId" value="# ${otherFormId}"/>
           notice the space ^
works fine (though is invalid for my ...

3. How to check a boolean condition in EL?    stackoverflow.com

Is this correct?

<c:if test="${theBooleanVariable == false}">It's false!</c:if>
Or could I do this?
<c:if test="${!theBooleanVariable}">It's false!</c:if>

4. Why '1' > 2 is false?    stackoverflow.com

As, I think every programming language compares an int and a charon behave of ASCII value of char I am new to java-Expression-Language. Now here, I have created a .jsp file in ...

5. What is the difference between two EL syntaxes?    stackoverflow.com

I want to make form fields stable in JSP forms so I use:

I tried to make like this:
and also works! Can someone tell me what is the difference?

6. How to add a custom VariableResolver in pure JSP    stackoverflow.com

I'd wish to programmatically add a custom VariableResolver when JSF or anything like that is not used, so that before seeking for beans in scopes as mentioned in 1, the ...

7. Accessing a field of a Java class directly in EL    stackoverflow.com

Is there any way to access a field of a Java class using EL if a getter for that field does not exist? For example, let's say I have a Java class ...

8. Accessing arrays defined in in JSP    stackoverflow.com

I have arrays of objects defined in a java class, In JSP I have instantiated object of that class using

<jsp:usebean id="obj" class="complete path of class"/>
and printing them using
in ...

9. Question about some calculation using JSP EL?    stackoverflow.com

I am new to JSP EL. I am reading some EL text and got the following code:

        <h1>Hello World!</h1>

10. What's the correct way to get to the username using EL?     stackoverflow.com

I have a static method that returns a list of a type. In order for me to get a username from type I have to do the following type.getUser.getUserName. What's the ...

11. How to escape EL dollar signs?    stackoverflow.com

I wish to write JSP which generates XML file, which has syntax, similiar to XML with EL expressions. In other words, I wish to let JSP to process only my expressions, ...

12. How to use nested EL in jsp    bytes.com

kevinkwh Hi there is 2 tables. one is product and another is manufacturer product has manu_id which is PK in manufacturer. so when i show the product table i got only ...

13. EL not working?    coderanch.com

14. PropertyResourceBundle and EL    coderanch.com

15. JSP 2.0 EL    coderanch.com

16. EL too feeble?    coderanch.com

In our group some people are proposing to ban scripting altogether in JSP pages (by using the scripting-invalid tag) in favor of EL. However I find it too stupid to do. It is too cumbersome or impossible to do many simple things. For example, I just want to print all headers and their values in the JSP page. It is very ...

17. EL use    coderanch.com

18. Using EL in non-JSP code    coderanch.com

19. Unable to get EL to work    coderanch.com

20. can you help me about EL please    coderanch.com

21. EL Help...    coderanch.com

22. EL in not working    coderanch.com

23. some help in EL    coderanch.com

24. EL configuration is not working    coderanch.com

25. EL problem ${3 div 4}    coderanch.com

26. how prevalent is EL usage    coderanch.com

27. JSP EL ? How common is it ?    coderanch.com

I chose JSP + JSTL/EL for my current project and couldn't be happier. It is VERY powerful in what it can do with a small amount of code. A case in point would be pulling data out of collections. It's extremely easy to iterate over collections of java-bean type model objects for displaying tables of data: with NO casting. Here's an ...

28. Is EL enbaled defaultly?    coderanch.com

29. EL    coderanch.com

30. EL not displaying    coderanch.com

31. EL Execution Problem    coderanch.com

32. jsp EL craeting problem    coderanch.com

33. Problem with EL    coderanch.com

34. EL is not working    coderanch.com

I am also facing same problem. I checked FAQ Here is my deployment discriptor main tag entry, where I specified the version as 2.4 I checked JSP FAQ at http://java.sun.com/products/jsp/faq.html there also I haven't foundmuch. Here is my full jsp source. ------------------------- <%@ page isELIgnored="false"%> <%! String texts="Welcome to Expression language"; %> Welcome ...

35. JSP 2.0 EL and html:options issue    coderanch.com

36. EL Configuration Problem    coderanch.com

http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4"> AssetManagementSystem action org.apache.struts.action.ActionServlet config /WEB-INF/struts-config.xml 1 action *.do index.jsp /WEB-INF/struts-bean /WEB-INF/struts-bean.tld /WEB-INF/struts-logic /WEB-INF/struts-logic.tld /WEB-INF/struts-html /WEB-INF/struts-html.tld

37. EL not working    coderanch.com

Hi there, I cant get EL running. I am using tomcat 5 and the example I am using is from the Sun' website. Is there any other setting I have to make to have them running. Here is the example Expression Language Examples

JSP Expression Language Examples

The following table illustrates some EL expressions and implicit ...

38. EL and ? : construct    coderanch.com

39. jspinclude with EL    coderanch.com

40. EL Help please    coderanch.com

41. Environmental setup Issue-EL    coderanch.com

hi Currently i am using Tomcat 4.0. To run JSTL1.1 and EL, one should have Tomcat5.x, so i tried to install it and run my program. but i got the error saying "This version of Apache Tomcat will run in J2SE 5.0" is that mean tom5.x, excepting higher version of JRE, if so what should be the version and from where ...

42. How EL works?    coderanch.com

43. small EL question    coderanch.com

44. Would this be possible in EL?    coderanch.com

public class A { int x; } public class B { A a; } I want to access A's attribute. If it's private, then I could have a getter method to do that for me(I've tried it before). What I need to do is call A's member but I'm kind of worried since EL's syntax is something like... ${b.a} I was ...

45. EL is not working    coderanch.com

46. EL algorithm help    coderanch.com

47. please solve this EL    coderanch.com

48. problem in displaying EL    coderanch.com

If you were in a JSP1.2 container (eg Tomcat4) that doesn't understand EL on its own, then you would expect that output. In JSP1.2, you can only use EL expressions in the JSTL tags (and certain other tags that have been specifically programmed to allow it) JSP2.0 moved the responsibility for evaluating the EL expression from the JSTL tags where it ...

49. about EL    coderanch.com

50. problem with EL    coderanch.com

51. About EL    coderanch.com

52. EL    coderanch.com

53. Type Issue with EL    coderanch.com

There's a good chance I don't understand the difference. The syntax I was using was similar to the way one would access a bean, attribute or a name/value pair. The syntax suggested by Ben that worked was EL syntax. I suppose I must confess it is not clear to me when one uses one versus the other, why in this context ...

54. EL in WSAD not working    coderanch.com

Hello, I am using the EL in WSAD 5.0 it is not displaying simple expression. ${carmake} where carmake is the attribute in the session. I have the jar files in the lib by default. if i am using this <%= session.getAttribute("carmake") %> it is working fine. this is the jsp file. <%@ ...

55. equivalent EL instead of scriplet    coderanch.com

56. EL evaluation    coderanch.com

57. EL's encode    coderanch.com

58. yet another EL not working problem    coderanch.com

Hello all, Using: Tomcat 5.5.20 (moving from 4.1) JSTL 1.1 JSP 2.4 I'm getting the following error: According to TLD or attribute directive in tag file, attribute X does not accept any expressions Now, I've researched a lot here at the ranch, and lots of other people have had this problem, but I think I have ticked off the things they ...

59. Problem with el evaluation in a jspx    coderanch.com

60. JSP FAQs - el-ignored in DD    coderanch.com

61. Doubt - EL    coderanch.com

62. Doubt regarding EL    coderanch.com

I have a top level class called Directory which contains a Set of Folder Objects. In the Folder class, I have another Set of objects called SubFolders. In the SubFolder class, I have properties like fileName, fileSize, uploadDate etc. All of the above classes are modelled as Javabeans with getter and setter properties. Hierarchically, it is represented as: Directory----->Folder------>SubFolder. How can ...

63. Turn EL on in JSP 1.2    coderanch.com

64. EL reg.    coderanch.com

65. EL and autocomplete    coderanch.com

66. EL -is it being used?    coderanch.com

67. Regarding EL    coderanch.com

i checked JSPFAQ and the provided instructions to check spec for jsp2.0 servlet2.4 ...actually i dont have a better idea on these as i am a beginner. but i would like to learn.can you please explain me. My IDE is saying some internal error. like this: HTTP Status 500 - type Exception report message description The server encountered an internal error ...

68. problem in EL    coderanch.com

69. Formatiing problem in EL    coderanch.com

70. Issue while using EL    coderanch.com

71. EL: concatenating a literal '$'    coderanch.com

72. BigDecimal in EL addess scales    coderanch.com

73. wild card in EL?    coderanch.com

74. Concrete class problem in EL    coderanch.com

This example is from HFSJ.I follow this example and get exception while I try to get value of empID of Concrete class Employee. org.apache.jasper.JasperException: Cannot find any information on property 'empID' in a bean of type 'foo.Employee' here is full example package foo; public abstract class Person{ private String name; public void setName(String name) { this.name=name; } public String getName() { ...

75. Doubt in EL Question    coderanch.com

76. Using EL    coderanch.com

77. Turning EL off    coderanch.com

78. Help with one EL    coderanch.com

You cant access a Java class constant in EL because it is not exposed to any web contexts( request, session.. scopes). Hence you should use the direct lookup value like, .. or else you can write an utility class/Custom tag which will expose the constants of a class to any web context or you can use 'unstandard' tag library ...

79. JSP EL not working    coderanch.com

80. problem with EL    coderanch.com

81. How To Get The StackTrace Using EL.    coderanch.com

82. EL related problem-Explanation needed    coderanch.com

83. Failed to evaluate EL    coderanch.com

84. Problem While using EL    coderanch.com

Hi all, i am using JSTL 1.1 , I created an custom tag called "advice" and it have a attribute named "user". Through a form i am getting the username parameter. I am sure that, there is some problem while passing the "user" attribute. Since i am using EL in the attribute. So whats the reason behind this error? If i ...

85. EL basic problem    coderanch.com

86. How to do that in EL?    coderanch.com

Hi, I want to determine if a particalar checkbox is checked or not with the following statement: checked For example, if check3 is checked, i set a pageContext attribute check3=true. However, the statement above does not work. It is always false, wether the pageContext attribute is there or not. Note that i have to concatenate the EL expression, ...

87. question regarding el    coderanch.com

88. Doubts in EL from HFSJ    coderanch.com

Hi All, ${pageContext.request.method} I decoded it as pageContext is an object of a bean class which has a property 'request' so pageContext.request will return me a request object but this request object is not a object representing a bean or map.so, the left side of 'method' is not a bean or map so these expression should be wrong. I know I ...

89. EL is required any Lib ?    coderanch.com

90. EL scopes    coderanch.com

91. EL problem    coderanch.com

92. Simple EL code is not working    coderanch.com

The A is: ${param.A} The B is: ${param.B} Integer Testing The Sum is: ${param.B} + ${param.A} Result: The A is: 2 The B is: 3 Integer Testing The Sum is: 3 + 2 After updating the integers in the text boxes once i click submit button, i am getting the above result. I understand that A & B are ...

94. EL cookie Problem    coderanch.com

95. JSP EL not evaluating    coderanch.com

Thanks for your response. Yes it should be a configuration issue. Actually I don't know what I was thinking about when I placed that question... The thing is that I remembered that once I had some client side problems with JSF EL and jQuery like mixed $# etc. I don't remember exactly what kind of issue.. The EL inside a JSTL ...

96. EL doesn't work    coderanch.com

97. EL arithmetic question    coderanch.com

99. CSS with EL    coderanch.com

100. Calling JavaScript using EL    coderanch.com