jsp:useBean... didn't create new bean?

According to tutorial or specification (in my perception),
the following tag will create a new bean if it doesn't
exist:
    <jsp:useBean id="prodDetail"
        class="mycomp.model.ProductDetail"
        scope="request" />Say I put the tag in Product.jsp, and it is an entry form
for insert and update a new product. For insert, I intend
to access Product.jsp directly from browser. For update,
I have clients to access a servlet that in turn, will
dispatch {[Product.jsp + prodDetail to be updated)}.
There was no problem with update, however, for insert
(directly access Product.jsp via url), I got this exception.
I am using Tomcat, and I wonder whether it's a "Java error"
or "Tomcat error".
Any help would be appreciated. Thanks...
javax.servlet.ServletException
     at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:459)
     at _0002fProduct_0002ejspProduct_jsp_0._jspService(_0002fProduct_0002ejspProduct_jsp_0.java:187)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
...etc...
Root cause:
java.lang.NullPointerException
     at _0002fProduct_0002ejspProduct_jsp_0._jspService(_0002fProduct_0002ejspProduct_jsp_0.java:112)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.java:130)
...etc...

Whoops, sorry, I made a silly silly mistake, apparently
there was an extra scriplet <% } %> I forgot to delete.
It's works now....
I figured that out when I was composing following posting
about snipplet of the JSP..., so I guess this "embarassing"
posting does help me too...., in a short time :D

Similar Messages

Updating / Creating new Beans

Whenever I update or create a new bean, I can't seem to read anything from the bean, although it seems to have no problem recognizing that the bean is there.
All my old beans work just fine, but whenever I make a change to one or add one, I can't use it. All my fields retrieve as "" (strings).
I'm running tomcat, and my beans have all been properly compiled and put in WEB-INF\classes\packagename
Thanks,
--k

They are identical to any other variable in the bean, just renamed obviously.
In JSP page:
<jsp:useBean id="sLibBean" class="releaseFormBeans.subLibBeanRDATE" scope="session"/>
Bean:
For:
package releaseFormBeans;
import java.util.*;
import java.text.*;
public class starTeamBuildBeanRDATE
These were added:
     String paramRdate = "";
     String paramRtime = "";
     String paramRzone = "";
added to bean with get/set methods added as well.
thanks,
--k

More Efficient to Create New Bean or Use Existing Ones

I have two beans, lets say HomeBean and OfficeBean which are related to each other by a user_id which comes from a database.
When users do a search for something I want only parts from each bean like HomeBean.city and OfficeBean.city and a few other fields from each.
I'm wondering if it is more effiecient to create a new bean, such as SearchResultBean which contains only the information that I need, or is it better to use the beans I already have? I'm pretty sure the J2EE blueprints would not agree with me making new beans, but I don't want to load all that extra information from the database when I'm not going to show it to the user.
Thanks in advance!

So far I can only find this article from JAVAWORLD and it's not really geared towards my question.
http://www.javaworld.com/javaworld/jw-11-1999/jw-11-cleanbeans.html
Otherwise I'm not sure what to do, create a SearchResultBean that would contain only the data I need to return to the user after their search, or use the entire beans of which I only need less than half their information.

Jsp:useBean : Missing value of String classed bean with 'session' scope

Hi!
I'd like to ask some help.
I have these two JSP pages:
1.jsp<jsp:useBean id="str" class="java.lang.String" scope="session"/>
<html>
<body>
<% str="hello"; %>
<a href="2.jsp">click</a>
</body>
</html>
2.jsp<jsp:useBean id="str" class="java.lang.String" scope="session"/>
<html>
<body>
<%=str%>
</body>
</html>When I open 1.jsp in my browser, then click on the link, the result is "nothing" (empty string). Why does the bean lose its value on the way?
I use a Tomcat 5.5.9 server.
Any help will be highly appreciated.

You have to think of several scopes when working with JSP. The first is the local scope: the method _jspService() where all the work of the JSP is done. This acts as a normal method and is where all the sciptlet code goes.
When you use jsp:useBean you are creating two references to a new String object. One in the local scope accessible through <%= str %> and the other in the session scope.
When you do <% str = "hello"; %> you are changing the local str variable to reference the String "hello" (this is equivalant to doing <% str = new String("hello"); %>). Only the local reference is changed, not the second reference in session.
If you want the change to take affect, then you will have to store the new value in session with the same name:
<% session.setAttribute("str", str); %>

How use bean of array with tag "jsp:useBean"??

hi,all
a bean of array put request with a servlet and forward a jsp page,this jsp use "jsp:useBean" of tag get the bean of array.
how do for jsp:useBean of tag??
thx.....

You can't use an array directly in a jsppage. first u have to write the line <useBean /> through which you can access youtr class
<jsp:useBean id="email" class="Pack.Email" scope="session" />
after writing this line you have your class in your hand, you can think of "email" as it is a class object of Email class which is a Bean...
declare a private array in the Bean and then made method getArray() which will return an array ... then you can use your array in jsp....
an example of using a class variable in JSp is given below
public String[] getArray() // note method must be public
return array;
now in your jsp page you have to use that class with
<jsp:useBean id="email" class="Pack.Email" scope="session" />
and cnow you can use array like this....
<%
String[] array=email.getArray();
for (int i=0; i< array.length;i++ )
out.println(array]);
%>
Does it solve your problem now ?

Which one better to use - jsp:useBean or import statement

Hi,
I just want to know that which one is better to use jsp:useBean or import statement .
I can instantiate and call method of myclass -
1) by importing the class through import tag in jsp as <%@page import="myclass"%. or
2). by using <jsp:useBean tag....
i have these two option to do the same thing. i know that basically useBean is used to call setter and getter method of bean class and but it can be used to call a normal java file that have some logic .
so what should i used , which one is better and why?
useBean provides scope and object instance so no need to create object by new operator. and with import you have to create an instance .
but which tag should i use in my jsp?
i am confused???

ok, means i can use jsp:useBean tag for all my
classes that are not actually bean. so it will be
instantiated at run time and provide efficiency .No. Jsp:useBean is used for java bean components.
>
but when should i use import statement in my jsp and
it happen at translation time so will it create any
type of burden for my code if i import multiple
classes.For non-java beans, you need to import the classes, period.
It's not a burden, it's a necessity.

Javabean-Installation for jsp:usebean

          Hi!
          I have made a simple JavaBean. I wont use it with
          <jsp:usebean> but i get:
          /index.jsp(6): class 'myBean' could not be loaded
          probably occurred due to an error in /index.jsp line 6:
          <jsp:useBean id="my" class="klaus"/>
          how must i install me Bean (not an EJB)
          thanks Klaus


1. Did you weid your weblogic.properties file as:
          weblogic.httpd.webApp.<AppNameHere>=<AbsolutePath>
          2. Do you have the proper directory structure?
          If you set the <AbsolutePath> above to C:\Temp, you'll need the following:
          C:\Temp\WEB-INF\classes
          You'll also need to import the bean in the code, in addition to the
          jsp:usebean tag.
          If the bean uses a package, (eg com.company), you'll also need
          C:\Temp\WEB-INF\classes\com\company
          Your .jar/.class files go in the one of the directories above, depending how
          the bean was written. The <Whatever.jsp> file would go in C:\Temp in the
          above example.
          3. Make sure the <AbsolutePath> is in your weblogic class path.
          4. Access the bean http://<server>/<AppNameHere>/<Whatever.jsp>
          Chad
          "klaus werner" <[email protected]> wrote in message
          news:3b990f4b$[email protected]..
          >
          > Hi!
          > I have made a simple JavaBean. I wont use it with
          > <jsp:usebean> but i get:
          >
          > /index.jsp(6): class 'myBean' could not be loaded
          > probably occurred due to an error in /index.jsp line 6:
          > <jsp:useBean id="my" class="klaus"/>
          >
          > how must i install me Bean (not an EJB)
          >
          > thanks Klaus

Unable to create Table Bean advanced search criteria

Hi,
I want to create new search criteria for advanced search region. The reason being new search criteria i tried to add by personalization it didnt worked may be guessing construction mode is autocustomization mode. Somewhere i have seen if resultsbased it will work. Can someone confirm on this??
I'm trying to create new bean for search criteria at the specified location under <oa:table akRegionCode="EAM_AD_ASSET_RESULTS_TABLE" but unable to do so:
Here is the part of the page
<?xml version = '1.0' encoding = 'UTF-8'?>

<page xmlns="http://xmlns.oracle.com/jrad" xmlns:ui="http://xmlns.oracle.com/uix/ui" xmlns:oa="http://xmlns.oracle.com/oa" xmlns:user="http://xmlns.oracle.com/jrad/user" file-version="$Header: EAM_AD_ADVSEARCH_PAGE.xml 120.18.12010000.3 2009/02/11 09:21:55 smrsharm ship $" version="10.1.3_1147" xml:lang="en-US" xmlns:jrad="http://xmlns.oracle.com/jrad">
<content>
<oa:pageLayout id="EAM_AD_ADVSEARCH_PAGE" akRegionCode="EAM_AD_ADVSEARCH_PAGE" regionName="Asset Search" amDefName="oracle.apps.eam.asset.server.AdvSearchAM" controllerClass="oracle.apps.eam.asset.webui.AdvSearchPageCO" appMenu="EAM_MAIN_SS" amStateRequired="false" helpTarget="EAM_AD_ADVSEARCH_PAGE">
<ui:corporateBranding>
<oa:image id="corporateBranding" source="/OA_MEDIA/FNDSSCORP.gif" shortDesc="Oracle"/>
</ui:corporateBranding>
<ui:productBranding>
<oa:image id="productBranding" source="/OA_MEDIA/EAMBRAND.gif" shortDesc="Asset Management"/>
</ui:productBranding>
<ui:contents>
<oa:query id="EamAssetQueryRegion" mode="autoCustomizationCriteria" dispSimple="true" dispCustomized="true" dispAdvanced="true" defaultPanel="customized" controllerClass="oracle.apps.eam.asset.webui.AdvSearchSearchCO" simpleSearchPanelButtonLabel="Simple Search" viewConfPanelButtonLabel="Views" advSearchPanelButtonLabel="Advanced Search" customizePanelTitle="Views" saveSearchButtonText="Save Search">
<oa:simpleSearchPanel>
<oa:defaultSingleColumn id="AssetSimpleSearchRegion" headerDisabled="false" text="Simple Search">
<ui:contents>
<oa:messageTextInput readOnly="false" columns="25" prompt="Asset Number" rows="1" secret="false" maximumLength="30" shortDesc="Asset Serial Number" id="EamAssetNumber" promptTranslationExpansion="100%" user:akAttributeCode="EAM_ASSET_NUMBER" user:akAttributeApplicationId="426" required="no" selectiveSearchCriteria="true"/>
<oa:messageLovInput externalListOfValues="/oracle/apps/eam/lov/webui/EAM_ASSET_CATEGORY_LOV" readOnly="false" columns="25" prompt="Category" rows="1" secret="false" id="EamAssetCategory" promptTranslationExpansion="100%" user:akAttributeCode="EAM_ASSET_CATEGORY" user:akAttributeApplicationId="426" selectiveSearchCriteria="true" shortDesc="Category">
<lovMappings>
<lovMap criteriaFrom="EamAssetCategory" lovItem="EamAssetCategory" id="lovMap1"/>
<lovMap resultTo="EamAssetCategory" lovItem="EamAssetCategory" id="lovMap2"/>
<lovMap id="lovMap39" lovItem="EamAssetCategoryId" resultTo="EamAssetCategoryId"/>
</lovMappings>
</oa:messageLovInput>
<oa:messageChoice readOnly="false" prompt="Asset Route" pickListViewDef="oracle.apps.eam.asset.server.PicklistYesNoVO" pickListDispAttr="Meaning" pickListValAttr="LookupCode" id="EamNetworkAsset" promptTranslationExpansion="100%" user:akAttributeCode="EAM_NETWORK_ASSET" user:akAttributeApplicationId="426" shortDesc="Asset Route" allowBlankValue="false" defaultValue="N"/>
<oa:formValue id="EamAssetCategoryId" dataType="NUMBER"/>
</ui:contents>
</oa:defaultSingleColumn>
</oa:simpleSearchPanel>
<oa:simpleSearchMappings>
<oa:queryCriteriaMap id="AssetNumberMapSS" criteriaItem="EamAssetNumber" resultsItem="AssetNumber1"/>
<oa:queryCriteriaMap id="AssetCategoryMapSS" criteriaItem="EamAssetCategory" resultsItem="AssetCategory1"/>
<oa:queryCriteriaMap id="AssetRouteMapSS" criteriaItem="EamNetworkAsset" resultsItem="AssetRoute"/>
<oa:queryCriteriaMap id="AssetCategoryIdMapSS" criteriaItem="EamAssetCategoryId" resultsItem="AssetCategoryId"/>
</oa:simpleSearchMappings>
<ui:contents>
<oa:tableLayout akRegionCode="EAM_AD_ADVSEARCH_RESULTS" regionName="Results" controllerClass="oracle.apps.eam.asset.webui.AssetResultsCO" addChildren="true" id="EamResultsNr" user:akAttributeCode="EAM_RESULTS_NR" user:akAttributeApplicationId="426">
<ui:contents>
<oa:tableLayout id="ResultsTableLayout2" width="100%" rendered="true">
<ui:contents>
<oa:rowLayout id="RowLayoutRegion2">
<ui:contents>
<oa:cellFormat id="CellFormatRegion2">
<ui:contents>
<oa:switcher id="MappedTableRegion">
<ui:case name="ShowTable" id="ShowTable">
<oa:table akRegionCode="EAM_AD_ASSET_RESULTS_TABLE" regionName="Asset Search" blockSize="25" standalone="true" height="1" id="MappedTable" user:akAttributeCode="EAM_RESULTS_NR" user:akAttributeApplicationId="426" width="100%" rendered="true" userCustomizable="true" shortDesc="Mapped Table">
<ui:contents>
<oa:messageStyledText id="AssetNumber1" viewName="AdvSearchVO" viewAttr="InstanceNumber" shortDesc="Serial Number" prompt="Asset Number"/>
<oa:messageStyledText id="AssetDescription1" viewName="AdvSearchVO" viewAttr="DescriptiveText" shortDesc="Asset Description" prompt="Asset Description"/>
<oa:messageStyledText id="AssetCategory1" viewName="AdvSearchVO" viewAttr="AssetCategory" shortDesc="Asset Category" prompt="Asset Category"/>
I tried several ways :
OAPageLayoutBean pageLayout = oapagecontext.getPageLayoutBean();
OAQueryBean query=(OAQueryBean)pageLayout.findChildRecursive("EamAssetQueryRegion");
OATableBean oawebbeantb = (OATableBean)query.findChildRecursive("EAM_AD_ASSET_RESULTS_TABLE");
OAMessageLovInputBean ccidbean = (OAMessageLovInputBean)oapagecontext.getWebBeanFactory().createWebBean(oapagecontext, OAWebBeanConstants.LOV_TEXT, null, "xxValidation");
if (oawebbeantb==null){
throw new OAException("Error this is a test!", OAException.ERROR);
oawebbeantb.addIndexedChild(ccidbean); --here it getting null
OR
OATableBean oawebbeantb = (OATableBean)oawebbean.findIndexedChildRecursive("EAM_AD_ASSET_RESULTS_TABLE");
OAMessageLovInputBean ccidbean = (OAMessageLovInputBean)oapagecontext.getWebBeanFactory().createWebBean(oapagecontext, OAWebBeanConstants.LOV_TEXT, null, "xxValidation");
oawebbeantb.addIndexedChild(ccidbean); --here it getting null
Please someone help me on this..
thanks,
mallik

1) Search panel textinput item should be search allowed true and prompt is need. no other property need to set.
HERE YOU DONT WANT TO SET VIEW INSTANCE AND ATTRIBUTE SINCE WE ARE DOING FOR EXTENDED VO ITEM AS SEARCH ITEM.THAT'S OK. I TRIED WITH YOUR COMMENTS FOR TEXTINPUT ITEM TOO.
Comment--
textinput item created is a simple item without any VO instance , etc.
There is no question of extended VO item, its a simple textinput item.
value in this field is going to compare with the values in result table.
2) Search mapping, only search item id and result item id need to set.
I'M DOING HERE MAPPING FOR ABOVE SEARCH ITEM ID AND RESULT ITEM ID
Comment-- Perfect !!
3) Item created in table , after you extended Vo, view instance and attribute needs to set.
WHERE DO YOU WANT THIS TO BE SET?? CAN YOU ELABORATE THIS MORE PLEASE.MAY BE I'M MISSING HERE SOMETHING.
Comment-- you must have created message styled text item in adv table bean, assign VO instance and attribute to it, right?
4) One more thing Parag, do i need to include where clause for extended VO item in view object??
for ex:
where attribute(this is extended vo item)=:4
Comment-- No need. this will be handled by point#2 above, i.e. criteria and result items.
--Parag Narkhede

RH_INSERT_INFTY not creating new records

Hi All,
I am using the FM RH_INSERT_INFTY to insert new records in HRP1000.
See the below FM call :
CALL FUNCTION 'RH_INSERT_INFTY'
     EXPORTING
         fcode               = 'INSE'
         vtask               = 'D'
          order_flg           = 'X'
          commit_flg          = 'X'
          authy               = 'X'
          PPPAR_IMP           =
          OLD_TABNR           = ' '
          REPID               = ' '
          FORM                = ' '
            keep_lupd           = keep_lupd
     TABLES
          innnn               = it_i1000
     EXCEPTIONS
          no_authorization    = 1
          error_during_insert = 2
          repid_form_initial = 3
          corr_exit           = 4
          begda_greater_endda = 5
          OTHERS              = 6.
But instead of creating new records it is changing the existing record in HRP1000.
Actually I want to create new records with different long text and short text in different languages so in case object id and object type even the dates can be same but the language would be different.
So I need to create a new records with a different language key and different short text. But this function module is changing the existing object short text,long text and language.
Could you please reply at the earliest.
Thanks & Regards,
Poonam

Hi,
you're right, this function didn't create new record when i want to create a record with same object but have different language.
you can use this function for your problem : RH_INSERT_INFTY_DIRECT
i tried and it works.
CALL FUNCTION 'RH_INSERT_INFTY_DIRECT'
EXPORTING
    vtask                     = 'V'
KEEP_LUPD                 =
tables
    innnn                     = p1000
EXCEPTIONS
   NO_AUTHORIZATION          = 1
   ERROR_DURING_INSERT       = 2
   REPID_FORM_INITIAL        = 3
   CORR_EXIT                 = 4
   BEGDA_GREATER_ENDDA       = 5
   OTHERS                    = 6
Regards,

Jsp:useBean and assigning a value to that bean

Hello,
I have a type called Country and I have declared a bean using the "jsp:useBean" syntax.
I then try to assign a value to that bean in a scriptlet. Eventually I try to retrieve the values using "jsp:getProperty". The problem is that it appears to null.
Here is the code of the jsp
<%@ page language="java" %>
<%@ page import="com.parispano.latinamericaguide.*" %>
<%
/* We retrieve the Countries object from the servlet context. */
ServletContext sc = getServletContext();
Countries cs = (Countries)sc.getAttribute("countries");
%>
<jsp:useBean id="country" class="com.parispano.latinamericaguide.Country"/>
<%
/* If the request contains a country id, then we set the variable. */
country = cs.getCountryFromId(Integer.parseInt(request.getParameter("countryID")));
%>
<html>
<head>
<title>Country details</title>
</head>
<body>
<table>
<tr><td>Name</td><td><jsp:getProperty name="country" property="name"/></td></tr>
<table>
<%
out.println(country.getName());//This is working
%>
</body>
</html>This is the code for the bean
package com.parispano.latinamericaguide;
* @author Julien Martin
* Represents a country.
public class Country implements Comparable {
     private int id;
     private String name;
     private int landArea;
     private String capital;
     private String currency;
     private String flag;
     private String internet_domain;
     private String dialling_code;
     private float literacy;
     private float male_life_expectancy;
     private float female_life_expectancy;
     private String map;
     private int population;
     private int population_year;
     private float birth_rate;
     private int birth_rate_year;
     private float death_rate;
     private int death_rate_year;
     private int gdp;
     private int gdp_per_head;
     private int gdp_year;
     private float unemployment_rate;
     private int unemployment_rate_year;
     public Country() {
     public Country(
          int id,
          String name,
          int landArea,
          String capital,
          String currency,
          String flag,
          String internet_domain,
          String dialling_code,
          float literacy,
          float male_life_expectancy,
          float female_life_expectancy,
          String map,
          int population,
          int population_year,
          float birth_rate,
          int birth_rate_year,
          float death_rate,
          int death_year_rate,
          int gdp,
          int gdp_year,
          float unemployment_rate,
          int unemployment_rate_year) {
          this.id = id;
          this.name = name;
          this.landArea = landArea;
          this.capital = capital;
          this.currency = currency;
          this.flag = flag;
          this.internet_domain = internet_domain;
          this.dialling_code = dialling_code;
          this.literacy = literacy;
          this.male_life_expectancy = male_life_expectancy;
          this.female_life_expectancy = female_life_expectancy;
          this.map = map;
          this.population = population;
          this.population_year = population_year;
          this.birth_rate = birth_rate;
          this.birth_rate_year = birth_rate_year;
          this.death_rate = death_rate;
          this.death_rate_year = death_year_rate;
          this.gdp = gdp;
          this.gdp_year = gdp_year;
          this.unemployment_rate = unemployment_rate;
          this.unemployment_rate_year = unemployment_rate_year;
     public float getBirth_rate() {
          return birth_rate;
     public int getBirth_rate_year() {
          return birth_rate_year;
     public String getCapital() {
          return capital;
     public String getCurrency() {
          return currency;
     public float getDeath_rate() {
          return death_rate;
     public int getDeath_rate_year() {
          return death_rate_year;
     public String getDialling_code() {
          return dialling_code;
     public float getFemale_life_expectancy() {
          return female_life_expectancy;
     public String getFlag() {
          return flag;
     public int getGdp() {
          return gdp;
     public int getGdp_per_head() {
          return gdp / population;
     public int getGdp_year() {
          return gdp_year;
     public int getId() {
          return id;
     public String getInternet_domain() {
          return internet_domain;
     public float getLiteracy() {
          return literacy;
     public float getMale_life_expectancy() {
          return male_life_expectancy;
     public String getMap() {
          return map;
     public String getName() {
          return name;
     public int getPopulation() {
          return population;
     public int getPopulation_year() {
          return population_year;
     public int getLandArea() {
          return landArea;
     public float getUnemployment_rate() {
          return unemployment_rate;
     public int getUnemployment_rate_year() {
          return unemployment_rate_year;
     public void setBirth_rate(float f) {
          birth_rate = f;
     public void setBirth_rate_year(int i) {
          birth_rate_year = i;
     public void setCapital(String string) {
          capital = string;
     public void setCurrency(String string) {
          currency = string;
     public void setDeath_rate(float f) {
          death_rate = f;
     public void setDeath_rate_year(int i) {
          death_rate_year = i;
     public void setDialling_code(String string) {
          dialling_code = string;
     public void setFemale_life_expectancy(float f) {
          female_life_expectancy = f;
     public void setFlag(String string) {
          flag = string;
     public void setGdp(int i) {
          gdp = i;
     public void setGdp_per_head(int i) {
          gdp_per_head = gdp/population;
     public void setGdp_year(int i) {
          gdp_year = i;
     public void setId(int i) {
          id = i;
     public void setInternet_domain(String string) {
          internet_domain = string;
     public void setLiteracy(float f) {
          literacy = f;
     public void setMale_life_expectancy(float f) {
          male_life_expectancy = f;
     public void setMap(String string) {
          map = string;
     public void setName(String string) {
          name = string;
     public void setPopulation(int i) {
          population = i;
     public void setPopulation_year(int i) {
          population_year = i;
     public void setlandArea(int i) {
          landArea = i;
     public void setUnemployement_rate(float f) {
          unemployment_rate = f;
     public void setUnemployment_rate_year(int i) {
          unemployment_rate_year = i;
     public String toString() {
          return name;
     public int compareTo(Object o) {
          Country c = (Country)o;
          int cmp = name.compareTo(c.name);
          System.out.println(cmp);
          return cmp;
}Can anyone please help?
Thanks in advance,
Julien.

Thanks,
I have added scope="application". It still show "null" indicating that the bean is not initialized with the properties. I would like a quicker way to initialize a bean property than invoking the setProperty tag for each property.
Here is a simple example that demonstrates the problem:
<%@ page language="java" %>
<%@ page import="com.tests.*" %>
<jsp:useBean id="monBean" class="com.tests.MonBean" scope="application"/>
<%
MonBean mb = new MonBean();
mb.setName("toto");
monBean= mb;
%>
<html>
<head>
<title>Lomboz JSP</title>
</head>
<body bgcolor="#FFFFFF">
<jsp:getProperty name="monBean" property="name"/>
</body>
</html>And the bean
package com.tests;
public class MonBean {
private String name;
public String getName() {
     return name;
public void setName(String name) {
     this.name = name;
}This show "null".
Any other idea why this is not working?
Thanks,
Julien

Jsp:useBean and definition of bean inside jsp:declaration

I use the following code where I define a bean in jsp:declaration
Its name is localBean. the problem is that jsp:useBean causes
a crash and my page is not working without understanding why.
When I replace the localBean in the jsp:useBean with another Bean
which is an actual class that resides in the system I have not a problem.
Any suggestions???
<HTML>
     <jsp:declaration>
          static public class localBean {
               private String value;
               public String getValue() {
                    return value;
               public void setValue(String value) {
                    this.value = value;
     </jsp:declaration>
     <jsp:useBean id="localBean" scope="page" class="localBean">
          <jsp:setProperty name="localBean" property="value" value="World"/>
     </jsp:useBean>
     <%-- Whatever HTTP parameters we have, try to set
          an analogous bean property -- %>
     <jsp:setProperty name="localBean" property="*"/>
     <head>
          <title>Hello World JavaBean</title>
     </head>
     <body>
          <center>
               <p><h1>
                    Hello
                    <jsp:getProperty name="localBean" property="value"/>
               </h1></p>
               <form method="post">
                    Enter a name to be greeted:
                    <input type="text" size="32" name="value"
                    value="<jsp:getProperty name='localBean' property='value'/>">
                    <br>
                    <input type="submit" value="submit"/>
               </form>
          </center>
     </body>
</html>

Thanks,
I have added scope="application". It still show "null" indicating that the bean is not initialized with the properties. I would like a quicker way to initialize a bean property than invoking the setProperty tag for each property.
Here is a simple example that demonstrates the problem:
<%@ page language="java" %>
<%@ page import="com.tests.*" %>
<jsp:useBean id="monBean" class="com.tests.MonBean" scope="application"/>
<%
MonBean mb = new MonBean();
mb.setName("toto");
monBean= mb;
%>
<html>
<head>
<title>Lomboz JSP</title>
</head>
<body bgcolor="#FFFFFF">
<jsp:getProperty name="monBean" property="name"/>
</body>
</html>And the bean
package com.tests;
public class MonBean {
private String name;
public String getName() {
     return name;
public void setName(String name) {
     this.name = name;
}This show "null".
Any other idea why this is not working?
Thanks,
Julien

I bought iPhone 4 for my wife, didn't create a separate apple ID account for her at that time. How can I now create a new one for her, sync her phone to the same PC that I sync my iPhone with without loosing all of her data, contacts, etc. Please help!

I bought iPhone 4 for my wife, didn't create a separate apple ID account for her at that time. How can I now create a new one for her, sync her phone to the same PC that I sync my iPhone with without loosing all of her data, contacts, etc. Please help!

I bought iPhone 4 for my wife, didn't create a separate apple ID account for her at that time. How can I now create a new one for her, sync her phone to the same PC that I sync my iPhone with without loosing all of her data, contacts, etc. Please help!

Jsp:usebean How to get value of an object from a bean

I am new to JSP and am struggling from past few days to solve a problem. Consider the below scenario
Class Book{
private String author;
public void setAuthor(String author)
public String getAuthor(){
return author; }
Class Rack{
private Book []books;
public []Book getbooks()
return books;
public void setbooks([]Book val){....}
Suppose Books gets populated only using Rack and I have Rack populate in my session, using jsp:usebean or any other tag how can I get value of author? Does using tag handle null value check of books, if books are not set by any chance?
Regards,
Dhyan

I got a way out to access the attribute, i feel it is
<jsp:usebean id="myRack" class="settings.Rack"/>
<c:foreach var="book" item="myRack.books">
</c:foreach>
I am not able to check if this is correct or not because myRack.books is not having any value set by me in the request scope. How do i get instance of Rack class set by another page in the current request? I can get the value if i use scriptlet but i dont want to use scriptlet.
I am continiously trying, if I get an answer, I shall post, else pls somebody guide.

CMP Beans from Tables: Why does the Container try to create new tables?

I'm trying to develop an EJB application using JDeveloper on 9iAS. I have several CMPs and have my tables that I want my CMPs to be based on already defined in my DB schema. I want to use CMP but I don't want the Container to create the tables, rather I want the Container to map my CMP EJBs to the already existing tables.
The issue is:
While creating these CMP EJBs in JDeveloper I chose the "New Enterprise Java Bean" EJB creation wizard using the option labeled "Container-managed Entity Beans from Tables". My assumption is that this does what I want, because the wizard prompts for a schema and table you want to map to. Then it creates the attributes & getter/setter methods, PK class, etc. all based on the table defintion automatically. Great. So why when I try to run my application do I get error messages for each EJB such as:
Auto-creating table: create table STREET_TYPE (PK_STYP_ID NUMBER(8), STREET_TYPE VARCHAR2(20), primary key (PK_STYP_ID, STREET_TYPE))
Warning: Error creating table: ORA-00955: name is already used by an existing object
Huh?? I thought the idea is that the CMP EJB is mapped to the existing table in my schema. Why is the Container trying to create new tables?? Is this possible? Or am I missing something fundamental about how Containers create and manage CMPs? Or is this just a JDevelop container issue? TIA

I presume you are getting the problem on application
deploy? This happens when upon initialization of the application using the built-in OC4J container/app server that is part of JDeveloper. Here is the full messaging:
[Starting OC4J using the following ports: HTTP=8989, RMI=23892, JMS=9228.]
C:\OraHome1\jdk\bin\javaw.exe -ojvm -classpath C:\OraHome1\j2ee\home\oc4j.jar com.evermind.server.OC4JServer -config C:\OraHome1\jdev\system\oc4j-config\server.xml
[waiting for the server to complete its initialization...]
Copying default deployment descriptor from archive at Q:\CBTCOF\COF_APPLICATION\COF_Project\classes/META-INF/orion-ejb-jar.xml to deployment directory C:\OraHome1\jdev\system\oc4j-config\application-deployments\current-workspace-app\classes...
Auto-deploying file:/Q:/CBTCOF/COF_APPLICATION/COF_Project/classes/ (No previous deployment found)...
Auto-creating table: create table STREET_TYPE (PK_STYP_ID NUMBER(8), STREET_TYPE VARCHAR2(20), primary key (PK_STYP_ID, STREET_TYPE))
Warning: Error creating table: ORA-00955: name is already used by an existing object
[...OTHER SIMILAR ERROR MESSAGES]
done.
Oracle9iAS (9.0.2.0.0) Containers for J2EE initialized
If so, in the application.xml file of you
OC4J instance the is a setting autocreate-tables,
which by default is true!
Set it to false as below and that should clear up
your problem.
<orion-application autocreate-tables="false"
default-data-Hmm. I found at least a dozen or so files with that name and set everyone that had this attriute to "false", restarted the OC4J server and still got these errors.

How can i load A gui JTable bean through jsp:useBean tag in a jsp page

Hi,
i am chiranjit , i am in a jsp project . i am desparately looking a solution for below stated problem:
i want to make a jsp page for master entry , that why i want to load a GUI Java bean in my jsp page.This GUI Bean contaning a JTable in which allow grid type data entry in the jsp page. But i am unable load that bean in the jsp page through jsp:useBean tag in my page.So if you have any solution then send in the forum as early as possible.
Thank you
chiranjit

No can do. JSPs can only output plain HTML (and javascript...) They are not used like normal Java classes.
If you need a complex GUI then you might use an Applet instead. If you want to use a JSP then you are stuck using normal HTML components, like <table> <form...> <input type="text"> etc...

jsp:useBean... didn't create new bean?

Similar Messages

Maybe you are looking for