Using BI Bean in JSP

Hi,
Can anyone please provider some pointers on using BIBeans in a JSP page. There are few options in my knowledge.
1)Using BI-Beans API for writing our own JSP tags.
2)In Jdev(10g) there seems to be some support for Graphs through ADF.
3)JSP and UIX tags provided BI-Graph beans.
thanks
Rahul

U may be used the code similar to following :
Context context = new InitialContext.();
Object obj = (Object)context.lookup("Your JNDI name");
YourHome home = (YourHome)obj.portableRemoteObject.narrow(obj,
YourHome.class);
YourRemote remote = home.create();
System.out.println("your Business methods : "+remote.businessMethod1());
Put this code or whatever code used in ur console client in JSP and invoke the businessMethods using remote object.
I worked with BEAWeblogic 5.1, I think similar case may be there with BEA Weblogic7 also.
First, make a jar file with ome.Remote and Bean by using the deploymenttool, then compile with ejb compiler, the new Jar is the complete deployable file. Take this file and register in weblogic.properties file that is specify the path of the Jar file in the weblogic.properties file. and put the JSP in public-html directory and start the server. if the bean is deployed successfully, open JSP file in a browser then it will work.... if the bean is not deployed you won't get any result.
I can say, just placing the initialContext part of code on the JSP and running the JSP. I think, this may helps u...
Ramana

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Using java bean with jsp

hello friends,
i'm new to jsp. i want to create an html form that accepts username and a value from four radio buttons and display back the entered name and checked radio button's value using java bean.
i use the <jsp:setProperty id="" property="*"> method. i don't know how to access the radio buttons value from the html.
also when i use an additional field other than username the jsp page is showing error.
Please give me the correct method to use java bean with jsp in this circumstance.
thank you.

thank you, but i have a problem left. the case is like this.
i got the jsp and bean worked fine when i have a sinle input text field.
but when i added a second text field i recieved the following error.
javax.servlet.ServletException: basket.newbean.getUserPass()Ljava/lang/String;
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
     org.apache.jsp.newform.process_jsp._jspService(process_jsp.java:69)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
where userPass is the new form element. I have made the subsequent chanes in my bean program and jsp file.
pls hlp.

Problem using a bean in JSP on Tomcat 5.0.28

Hi,
I'm new to JSP, I've installed Tomcat 5.0.28 and I'm able to run JSP but when I try an asp wich uses a bean it gives me this error, the directory structure is
testingProject with the first.jsp
testingProject\WEB-INF\classes\myPackage with the test.class
the first.asp
<%@ page import="myPackage.Test" %>
<html><head><title>Test</title></head>
<body bgcolor=white>
<jsp:useBean id="list" class="myPackage.Test"> </jsp:useBean>
<jsp:getProperty name="list" property="value1" />
<%=list.value1%>
<p>
</body></html>
the Test.java
package myPackage;
public class Test{
String value1="testinggggggggg";
public void Test(){
public String getValue1(){ return value1}
the error
thanks in advance
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 6 in the jsp file: /first.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat 5.0\work\Catalina\localhost\testingProject\org\apache\jsp\first_jsp.java:60: cannot resolve symbol
symbol : variable value1
location: class myPackage.Test
out.print(list.value1);
^
1 error
     org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
     org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
     org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)

There are two ways of getting info from the bean.
1) the jsp:getProperty tag, which seems correct in your code
2) the <%= ... tag. In that case you must write a valid java expression. In your case: list.getValue1()

Problem in Using Java Bean in JSP

Hi,
I have a bean called BankAccount.....I tried to use it in a jsp file called Usebean.jsp like this <jsp:useBean id="BA" class="BankAccount" scope="application" /> I tried in both tomcat and j2ee1.3 server... but when i run the jsp file i get an error saying..... Class.org.apache.jsp.BankAccount not found...... But i have put the class file properly inse classes folder.....
Can anyone help me soon..... i am new to JSP........
Thanks,
Akshatha

Well u need to have your class in a package
like mypackage.BankAccount
and put your class in classes/mypackage
<jsp:useBean id="BA" class="mypackage.BankAccount" scope="application" />

How can i use JAVA BEAN and JSP?

well, i have developed all my web apps by using pure JSP only, i know this sucks, but i dont know how to start on using beans... what directory should i put them into... etc... what are the good programminmg practices/standards/techniques when incorporating beans in jsp???

Standards are pretty loose, but generally, Beans hold a lot of the backend logic for your JSP. This can include data validation before entering into the database, database inserts, queries, data manipulation. The JSP should really only contain code that will retrieve the data from the bean and appropriately output it.
As far as using them, you can use the <jsp:useBean> tag in your JSP. As long as the bean is stored somewhere that your classpath points to, you're all set. From then on, you can use it like any other object in your JSP.

Using java beans in jsp using tomcat

hi i have made a form to enter user first name and last anme with html and then i have made a value javabean in which i want to store the information filled bu user. i want to display the information stored in java bean in jsp page i have made the full application and i have made class file of java bean as well as jsp file but when i try to run this web application in tomcat i am getting class not found exception.
could anybody tell me that where i should store the bean class in tomcat and do i need to make any package in which i have to place my java bean file plz tell me complete procedure along with code if possible

whew thats a lot of questions... All of this is pretty basic stuff. I would recommend you take a look at the web services tutorial: http://java.sun.com/j2ee/1.4/docs/tutorial/doc/
lets see.
Starting a package name with com is just a generic standard which is followed.
It is most correct when creating commercial packages to create packages like com.companyName.project
http://java.sun.com/docs/codeconv/html/CodeConventions.doc8.html
You should not need a page import directive unless you are using classes in scriptlets: ie <% %> tags in your JSP. Your jsp:useBean tag will automatically import necessary classes - you don't need to import classes for beans specifically
<jsp:useBean id="myClass" scope="session" class="com.myPackage" />
Your directory structure should be something like this
webApplicationRootDirectory
- page1.html
- page2.html
- page3.jsp
- page4.jsp
- WEB-INF
     - web.xml
     - classes
       - com
         - myPackage
           - myClass.classerrrm. Thats about it I think.

Using session bean in JSP

Dear All
I write a BorrowList session bean and tested OK in console mode. I can't use it in the JSP, Dose any body tell me How can I create this bean in the JSP and when should I place the bean classes(Home, Bean and Remote).
I'm now using the BEA Weblogic 7.0
I'm appreicate if anybody can help me.
Best Regards
YU

U may be used the code similar to following :
Context context = new InitialContext.();
Object obj = (Object)context.lookup("Your JNDI name");
YourHome home = (YourHome)obj.portableRemoteObject.narrow(obj,
YourHome.class);
YourRemote remote = home.create();
System.out.println("your Business methods : "+remote.businessMethod1());
Put this code or whatever code used in ur console client in JSP and invoke the businessMethods using remote object.
I worked with BEAWeblogic 5.1, I think similar case may be there with BEA Weblogic7 also.
First, make a jar file with ome.Remote and Bean by using the deploymenttool, then compile with ejb compiler, the new Jar is the complete deployable file. Take this file and register in weblogic.properties file that is specify the path of the Jar file in the weblogic.properties file. and put the JSP in public-html directory and start the server. if the bean is deployed successfully, open JSP file in a browser then it will work.... if the bean is not deployed you won't get any result.
I can say, just placing the initialContext part of code on the JSP and running the JSP. I think, this may helps u...
Ramana

Using web beans in JSP

I would like to know how create a tree using Web Beans that Jdeveloper provides. Using the web object editor I could add two Beans which mapped to JSTree and JSTreeData(in oracle.jdeveloper.jsp.wb package), though I don't know the difference between them. I tried to include Both these beans in the JSP(which appear as tags) but I am unable to render the tree. Let's say I have a parent node (text: row1, url: url1, 3 childs) and 3 child nodes (text: row2..row4, url: url2..url4, each with no childs). How do I write it in the JSP to render it properly
-Rajeev

I would like to know how create a tree using Web Beans that Jdeveloper provides. Using the web object editor I could add two Beans which mapped to JSTree and JSTreeData(in oracle.jdeveloper.jsp.wb package), though I don't know the difference between them. I tried to include Both these beans in the JSP(which appear as tags) but I am unable to render the tree. Let's say I have a parent node (text: row1, url: url1, 3 childs) and 3 child nodes (text: row2..row4, url: url2..url4, each with no childs). How do I write it in the JSP to render it properly
-Rajeev

Using Java Bean in JSP to show database record

I have links in my Tomcat container that if someone clicks on a specific link it should go to a Record page (Show.jsp) with all the values associated with a record from a database.
For example if someone clicks on a specific link like this:
LinkExample
it would take you to a jsp with database info for someone named Jones and show you his info:
Lastname = Jones
Firstname = Mike
City = San Diego
I would like to do this using a Java helper class and bean so I dont have any database connection or Java code in my JSP.
I created Java class file that has Database connection that works with a Java bean. I just dont know how to get the Show.jsp to work with the Java Bean and Java helper class file.
Here is what I have for Show.jsp and this is the part I have been working on the longest but cant get it to work because it doesnt seem to work with the database:<jsp:useBean id="user" class="num.UserDB"/>
//do I call getUser(lastname) here and if so how?
<jsp:setProperty name="user" property="*"/>
Last Name: <jsp:getProperty name="user" property="lastname"/><BR>
First Name: <jsp:getProperty name="user" property="firstname"/><BR>
City: <jsp:getProperty name="user" property="city"/><BR>My Java Helper class that compiles and connects to database:
package num;
import java.io.*;
import java.sql.*;
import java.util.*;
import num.User;
public class UserDB
public User getUser(String lastname)
User user = new User();
        try
     Class.forName...//database connection stuff here
    ResultSet results = stmt.executeQuery("SELECT * from user where lastname = '" + lastname + "'");
     if(results.next() == true)
     results.next();
     user.setLastname(results.getString("lastname"));
     user.setFirstname(results.getString("firstname"));
        user.setFirstname(results.getString("city"));
     catch(Exception e)
               System.out.println("Exception...");
   return user;
}My Java Bean that compiles here:
package num;
public class User
private String firstname;
private String lastname;
private String city;
public User()
     //no arg constructor
public User(String firstname, String lastname, String city)
       this.lastname = lastname;
          this.firstname = firstname;
          this.city = city;
public String getLastname()
          return lastname;
public void setLastname(String lastname)
     this.lastname = lastname;
//more bean methods for all fields here

Sorry if I wasnt specific enough. I have a link that passes a value (field that is passed is called lastname) to a JSP where I want to show record info for that value that is passed.
My question is how do I show the database record info on Show.jsp for the lastname field value of Jones where I want to use a Java Bean and Database helper class in Show.jsp
Here is the message I get when I hit the link (LinkExample) and it goes to Show.jsp:
org.apache.jasper.JasperException: Cannot find any information on property 'lastname' in a bean of type 'num.UserDB'
.....My UserDB class:
public class UserDB
public User getUser(String lastname)
User user = new User();
        try
     Class.forName("org.gjt.mm.mysql.Driver");
    Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/dbconnone?user=smitherson&password=abcdefg");
    Statement stmt = conn.createStatement();
    ResultSet results = stmt.executeQuery("SELECT * from user where lastname = '" + lastname + "'");
     if(results.next() == true)
     results.next();
     user.setLastname(results.getString("lastname"));
     user.setFirstname(results.getString("firstname"));
                     user.city(results.getString("city"));
     catch(Exception e)
         System.out.println("Exception..." + e);
   return user;
}Bean class:
package num;
public class User
private String firstname;
private String lastname;
private String city;
public User()
     //no arg constructor
public User(String firstname, String lastname, Sting city)
      this.firstname = firstname;
       this.lastname = lastname;
this.city = city;
public String getFirstname()
          return firstname;
public void setFirstname(String firstname)
     this.firstname = firstname;
public String getLastname()
          return lastname;
public void setLastname(String lastname)
     this.lastname = lastname;
public String getCity()
          return city;
public void setCity(String city)
     this.city = city;

Using java beans in jsp

Hi, I need to do this, can any one help me.
In the signup form, i have some text frields like this
HTML
<form action=http://localhost:8080/servlet/Signup.jsp">
<input type=text name=name>
<input type=text name=phone>
<input type=submit value="Submit">
</form>
JAVASP
req.getParameter("name");
req.getParameter("phone");
i am doing some validation here like if the user name exists in the database i am diverting him to the html page like this
rs = st.executeUpdate("select * from regi where user="+name+"");
if(rs.next())
here i need to call the html page in the from of a bean and with the old values intact to it
else
insert into regi values('"+name+"','"+phone+"')
this is how i am doin my html in the form of a bean
<%!
public void beans()
%>
<form action=http://localhost:8080/servlet/Signup.jsp">
<input type=text name=name value=<%=name%>>
<input type=text name=phone value=<%=phone%>>
<input type=submit value="Submit">
</form>
<%!
%>
but this is giving me error, can any one help me please?
Thanks
Uma

Hai Uma,
I read ur code like this.
<%!
public void beans()
%>
<form action=http://localhost:8080/servlet/Signup.jsp">
I think here is the mistake. <%! %> - for declaring variables. But for writting codes we have to use <% %> tags only. Can u try the same program by removing "{" in this tags or remove "!" from tag...
I hope this may helpful to u to solve ur problem
With Regards
Siva

Problem in using java bean with jsp

Hi,
This is my code and i get this error. Not able to trace the mistake.
bean.html
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Fname</title>
</head>
<body>
<form method="POST" action="http://localhost:8080/beanjsp.jsp">
     <p>Fname: <input type="text" name="T1" size="20"></p>
     <p>Lname: <input type="text" name="T2" size="20"></p>
     <p> </p>
     <p> </p>
     <p><input type="submit" value="Submit" name="B1"><input type="reset" value="Reset" name="B2"></p>
</form>
</body>
</html>
beanjsp.jsp
<jsp:useBean id="bean" class="beans.FirstBean" scope="application" />
<jsp:setProperty name="bean" property="fname" param="T1" />
<jsp:setProperty name="bean" property="lname" param="T2" />
THE FIRST NAME IS <%=bean.getFname() %>
THE LAST NAME IS <%=bean.getLname() %>
FirstBean.java
//CREATING A BEAN
package beans;
import java.io.*;
public class FirstBean
     private String fname;
     private String lname;
     FirstBean()
          fname="";
          lname="";
     public void setFname(String fn)
          fname=fn;
     public void setLname(String ln)
          lname=ln;
     public String getFname()
          return fname;
public String getLname()
          return lname;
error report
org.apache.jasper.JasperException: /beanjsp.jsp(2,0) The value for the useBean class attribute beans.FirstBean is invalid.
     org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
     org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:405)
     org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:146)
     org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1223)
     org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
     org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
     org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
     org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
     org.apache.jasper.compiler.Generator.generate(Generator.java:3270)
     org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:189)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)I have placed the beans package folder containing FirstBean.class inside classes folder of ROOT directory.
I don't know what s wrong with my code :( ... Plz help asap.
Thanks,
Akshatha

I have placed the beans package folder containing FirstBean.class >inside classes folder of ROOT directory.Place it in the WEB-INF/classes folder
ram.

What's the difference between using java directly in JSP and java bean

What is the difference if I use java code directly in JSP or use java bean in JSP?
Which class to use for receiving the passed parameter from html or java script? Any difference for java code and java bean in the way receiving the passed data?
How can I pass string from jsp to html or java script?

1 Cleaner pages
2 you have to write the class and use set and get methods
3 What do you mean when saying passing string from jsp to html??, do you mean the value you can use <%=variablename%>

What is the difference between java direct or java bean in JSP?

What is the difference if I use java code directly in JSP or use java bean in JSP?
Which class to use for receiving the passed parameter from html or java script? Any difference for java code and java bean in the way receiving the passed data?
How can I pass string from jsp to html or java script?

it's generally accepted as better design to separate presentation from logic. meaning, the java code in the jsp should be used to support displaying data, as oppsoed to implementing the application - like database access, etc.
when the logic is separated from the presentation, it allows you to reuse logic components within several jsp pages.
if you decide to change the presentation layer in the future (to support wap, for example) you don't need to rewrite your entire application, since the "guts" of the application is outside of the jsps.
it is also a good idea to separate your business logic from your data layer. adding a "buffer zone" between these layers helps in the same manner as in separating presentation from logic. if you're using flat files for storage now, upgrading to a database wouldn't require rewriting all your business logic, just the methods which write out the data to a file, for example.
once you feel comfortable with separating the various layers, check out the struts framework at http://jakarta.apache.org/
to answer your second question, to get parameters passed in from HTML forms, use ServletRequet's getParameter() method.
in tomcat:
<% String lastName = request.getParameter( "lastname" ); %>
to answer your third question: when displaying the HTML from withing a jsp, print out the string to a javascript variable or a hidden form element:
<% String firstName = "mike"; %>
<input type="hidden" name="firstname" value="<%= firstName %>">
<script language="javascript1.2">
var firstName = "<%= firstName %>";
</script>
this jsp results in the following html:
<input type="hidden" name="firstname" value="mike">
<script language="javascript1.2">
var firstName = "mike";
</script>

Insert data into table from JSP page using Entity Beans(EJB 3.0)

I want to insert data into a database table from JSP page using Entity Beans(EJB 3.0).
1. I have a table 'FRIENDS', (in Oracle 10g database).
2. It has two columns, 'NAME' and 'CITY'. Both have datatype strings(varchar2).
3. Now from a JSP page, having two textfields, 'NAME' and 'CITY', I want to insert data into table 'FRIENDS'.
4. In between JSP and database is a Entity Bean(EJB 3.0) and a stateless session bean.
5. I am using JDev as editor.
Please provide me code ASAP or link with similar example.
Thank you.
Anurag

Hi,
I am also trying that scenario. So u can
Post the jsp form data to a Servlet which will act as a Controller.
In the servlet invoke the business method.
Similar kind of app is in www.roseindia.net
Hope this would help u.
Meanwhile if u get any optimal solution, pls post it.
Thanks,
Happy Java Coding.

Use bean in jsp, please help me out

Hi all,
As a beginner in jsp I want to use a bean into my jsp page. But this bean is sourcing from a old applet (i've converted the code applet into beans code), and should return a chart (grpahics).
Here is the heart of my problem : how can i replace, call , or set up the paint method from the applet. And call it into my jsp page in order to retrieve a chart ?
Basically all applet shall have a paint method with a Graphics argument , in jsp i can't do
Mypackage.mybean.paint(Graphics g);
Hope someone will be able to help me
Thanks in advance
Shamann

I don't think that you can use the Graphics object in a JSP. A JSP is executed on the server side and only the output from that will be sent to the client. If you want to use Graphics objects etc, I think that you'll have to send it to an applet (possibly embedded in the page), but since I've never done this, I can't help you, I'm afraid.
HTH,
Raj.

Using BI Bean in JSP

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