2. jsp:useBean usage coderanch.comMarco I'm not a jsp or bean expert but if I understand your question correctly you want to know why to use a bean instead of a regular class. To be a bean a class meets certain specific requirments, such as accessor methods, that may or may not be in another class. Because of this you can use things like this: ... |
3. UseBean coderanch.comWhen you get an object as a bean you can use all of the getProperty and setProperty methods. Those will not work with a normal class instance you would get from another tag. Also by creating a bean and conforming to all of the required rules you have a much better chance of creating somehtng that is truely a reusable component ... |
4. Basic useBean question coderanch.com |
5. Using The UseBean from Jsp coderanch.comHi! Friends, I have a jsp page using the |
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11. conditional usebean coderanch.comim trying to do the folowing in my jsp but i get errors when i try to access the beans i.e underfined variable or class name myContentManagerUpdateBean (i get this error even if bnId is not null) any ideas. thanks in advance. <% if (request.getParameter("bnId") != null) { %> |
12. Simple jsp:useBean question coderanch.com |
13. jsp:useBean coderanch.comIn order to access class B, you can do any of the following: 1.) instantiate class B as a Bean (i.e. jsp:useBean) 2.) instantiate an instance of class B in your jsp page 3.) use composition (i.e. class A maintains an instance member of type class B) If you use scheme 1, you can access class B by using getAttribute and ... |
14. Difference between jsp:useBean and .... coderanch.comTheoretically speaking, is there any difference as far as object resources is concern, when you extend or import a class(bean) and using that class(bean) as bean by |
15. jsp:usebean and Maps coderanch.com |
16. jsp usebean sharing issues coderanch.comHi, I am using a bean called productTransfer in two different JSP's: JSP 1: |
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18. A JSP consisting of a single jsp:useBean won't compilef coderanch.com |
19. jsp:useBean ClassCastException coderanch.comI have a jsp where I use jsp:useBean. I only get the exception in the JSP after I try to update the bean in the session data (in a struts action class). Should beans only be read only, set up once never to be changed ? I am getting this error on Jrun4. If I initialize the bean with some initial ... |
20. UseBean coderanch.comHi, i have a jsp where i have 2 combo boxes and a button. On selection of the values from the 2 combo boxes and after clicking on 'go' the page should display a list which fulfills the above criteria. how do i do it?? for eg. One combo-box contains codes and the other contains the range. so once the user ... |
21. using jsp:useBean coderanch.comHi, I am trying to put some properties from a JavaBean (user) into the session scope after the user logs in. This is done via authentication. I am sure that my JavaBean is written properly and that all the properties I want to put in the scope are there. The problem I have is that for some rezone when I try ... |
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23. jsp:useBean coderanch.comHi, I'm making a cd store web app where my index is in jsp. Within this index page I have another jsp page included that is only to contain the categories of music genres which are stored on my database. What I want to do is be able to use the jsp:useBean and have the bean read from the database and ... |
24. How to use Java Application in jsp:useBean coderanch.comOriginally posted by ramprasad madathil: By the way, what Adeel meant when he said 'No' to your first post was that the syntax of the useBean tag does not give you an easy way to invoke methods (other than the get and set methods) on the bean. You would have to do it the scriptlet way as you have posted subsequently. ... |
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29. Problem in usebean coderanch.comhi i am developing a application in jsp. & i am getting an error in tomcat server on using usebean org.apache.jasper.JasperException: Unable to compile class for JSP An error occurred at line: 36 in the jsp file: /tool/tool.jsp Generated servlet error: tool.connection.SqlConnect cannot be resolved or is not a type An error occurred at line: 36 in the jsp file: /tool/tool.jsp ... |
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33. bean vs jsp:useBean problem coderanch.comHi all, I have a little problem that I'd like to resolve just for my own gratification. A have a simple class as follows: package beans; public class hellobean { private String name = "world"; public void setName (String name) { this.name = name; } public String getName() { return name; } } As you can see it's a no big ... |
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48. jsp:useBean coderanch.comCan I use nested |
49. a big doubt on jsp:useBean coderanch.comHi guys....could you please help me out with this....it's not mentioned in the errata list for HFSJ....The 12th bullet on Page 414 point says --If you specify a "type" attribute in |
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51. jsp:usebean -- need info coderanch.com |
52. jsp:useBean doubt coderanch.com |
53. Problem with using jsp:useBean coderanch.comHey Merrill, I tried that too, I am getting an InstatntiationException, the stack trace is as below javax.servlet.ServletException: class com.sapmarkets.isa.catalog.webcatalog.WebCatArea : java.lang.InstantiationException: com.sapmarkets.isa.catalog.webcatalog.WebCatArea at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:498) at org.apache.jsp.catalog.ProductDetailB2C_jsp._jspService(ProductDetailB2C_jsp.java:1209) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:92) at javax.servlet.http.HttpServlet.service(HttpServlet.java:809) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:162) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187) at javax.servlet.http.HttpServlet.service(HttpServlet.java:809) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:627) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:306) at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759) at com.sapmarkets.isa.core.ActionServlet.processActionForward(ActionServlet.java:267) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1596) at com.sapmarkets.isa.core.ActionServlet.process(ActionServlet.java:430) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510) at javax.servlet.http.HttpServlet.service(HttpServlet.java:716) at javax.servlet.http.HttpServlet.service(HttpServlet.java:809) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:627) ... |
54. jsp:useBean help is required coderanch.com |
55. Doubt in jsp:useBean coderanch.com |
56. jsp:usebean | NoClassDefFoundError coderanch.com |
57. About jsp:useBean coderanch.comhi all, i am using jsp:usebean in my jsp page.but Bean class is abstract. when i try to use this |
58. jsp:useBean doubt coderanch.comhi guys, i want to develop an website using jsp. actually i am using the javascript for actions in my page. but i am facing a problem with Internetexplorer what it is my javascript code supports only on IE not in mozilla.so i want to change the code in jsp:usebean concept.is there any possible to devlop in jsp:usebean. what my requirement ... |
59. jsp:useBean and generic type? coderanch.com |
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61. problem in useBean coderanch.com |
62. Doubt in working of jsp:useBean coderanch.com<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ page import="java.io.*,java.util.*,org.omkar.swajsp.dao.*,org.omkar.swajsp.vo.*"%> |
63. jsp usebean coderanch.com |
64. Regarding useBean coderanch.com |
65. "jsp:usebean" question coderanch.comI define a bean in first.jsp using "jsp:usebean" with "scope=session" and populate all fields in bean. I then forward to second.jsp which makes no reference to bean created in first.jsp. Then second.jsp forwards to third.jsp, which has "jsp:usebean" defined for the bean created in first.jsp. I lost all of the values which were populated from first.jsp. I thought that as long ... |
66. Problem with jsp:useBean coderanch.com |
67. problem with jsp:useBean ...Pl help coderanch.com |
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69. where to place beans for jsp:useBean coderanch.com |
70. jsp:usebean coderanch.comWell here is the code for the html(beans.html) useBean action test resultHello, Your favourite language is My comments on your language: |
71. jsp:usebean - deciding which bean at run time coderanch.com |
72. Test 498 question relating to jsp:useBean coderanch.comThe jsp:useBean action looks for a named instance in the specified scope and if it is isn't there, it creates it. This means that answer (c) will try to find a bean called appInfo on the page. However, the startup process initialises the JavaBean and binds this into the servlet context. This is (if you like) a global area for the ... |
73. Is this legal in jsp:useBean... coderanch.com |
74. Using jsp:useBean for a bean with one argument constructor coderanch.comHi Celina, from what I have experienced it seems that at least Tomcat requires that the class have a default constructor (e.g. a non-argument constructor). I think the definition of what a java-bean is also states that there must exist a default constructor for the class. To handle the problem you can do a work-around where you demand that jsp-pages which ... |
75. Pissy jsp:usebean coderanch.com |
76. JSP & useBean coderanch.comHi All, Something does not feel right here !! I declared a bean with the useBean tag and gave it a scope of request. |
77. useBean-like bean instantiation behavior from a Servlet? coderanch.comCertainly I could, however the same argument could be made for useBean in JSPs... but it's a handy concise construct for mapping from an HTML form to Java bean. Changes to the Java bean do not require corresponding servlet changes (specifically: adding new properties). And I'm hoping to have those same benefits in a servlet. I'll note that I found it ... |
78. Emulating JSP 'usebean' command in a Servlet coderanch.com |
79. Need UseBean (jsp) functionality in Servlet coderanch.com |
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81. How to use a jsp:useBean inside a Servlet coderanch.com |
82. deserilize using usebean coderanch.com |
84. JSP polymorphism problem in |
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86. jsp usebean coderanch.com |
87. why use |
88. Advantages of UseBean coderanch.com |
89. Using jsp:useBean across JSPs coderanch.comHi all, I have a problem with 3 JSPs, say A.jsp and B.jsp and A.jsp includes B.jsp A uses a useBean named 'userinfo' which is picked from the session initialized in C.jsp. If I directly access A.jsp everything works fine. Heres the problem: I have to access both A(B included) and B separately. If I try to access B.jsp which expects ... |
90. JSP useBean Question forums.oracle.com |
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