javax.servlet.jsp.JspException: Cannot find bean: "testList" in any scope

[Riya Carl]

Hello,

I am new to Struts, and I am trying to create a small web application using tutorials in Struts 1.3. I get the error
javax.servlet.jsp.JspException: Cannot find bean: "testList" in any scope .
Anyidea whats causing this? Pleaase help.

web.xml:

    <?xml version="1.0" encoding="UTF-8"?>
<web-app>
	<welcome-file-list>
		<welcome-file>example.jsp</welcome-file>
	</welcome-file-list>

	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
		<init-param>
	<param-name>config</param-name>
	<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>

		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>/example</url-pattern>
	</servlet-mapping>
	
</web-app>

struts-config.xml:

   <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
	<action-mappings>
		<action path="/example" type="de.laliluna.tutorial.paging.action.ExampleAction" scope="session">
			<forward name="example" path="/example.jsp" />
		</action>
	</action-mappings>
	
</struts-config> 

[David Newton]

Please UseCodeTags when posting code or configuration. Unformatted code and configuration is very difficult to read. You can edit your post to include them by using the button.

Any idea whats causing this?

The bean "testList" isn't in any scope. Unfortunately, you don't provide the code that actually causes the error, so it's impossible to help.

And welcome to JavaRanch!

[Riya Carl]

Thanks for replying David. I can add the full source code. Please find attached rest of the java files.

  package de.laliluna.tutorial.paging.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import de.laliluna.tutorial.object.TestList;

public class ExampleAction extends Action {
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		int maxEntriesPerPage = 3;
		int page = 1;
		try {
			page = Integer.parseInt(request.getParameter("request"));
		} catch (NumberFormatException e) {
		}
		int offset = maxEntriesPerPage * (page - 1);
		request.setAttribute("testList",
				new TestList(offset, maxEntriesPerPage));
		return mapping.findForward("example");
	}

}


package de.laliluna.tutorial.object;

public class Customer {
	private int id;
	private String name;
	private String city;
	private String phone;

	public Customer() {
	}

	public Customer(int id, String name, String city, String phone) {
		this.id = id;
		this.name = name;
		this.city = city;
		this.phone = phone;
	}

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getCity() {
		return city;
	}

	public void setCity(String city) {
		this.city = city;
	}

	public String getPhone() {
		return phone;
	}

	public void setPhone(String phone) {
		this.phone = phone;
	}

}



package de.laliluna.tutorial.object;

import java.util.ArrayList;
import java.util.Collection;

public class TestList {
	ArrayList<Customer> list;
	int offset;
	int length;

	public TestList(int offset, int length) {
		this.offset = offset;
		this.length = length;
		fillList();
	}

	public void fillList() {
		list = new ArrayList<Customer>();
		list.add(new Customer(1, "Marie", "New York",
				"              061/123456         061/123456"));
		list.add(new Customer(2, "Klaus", "Bouston",
				"              071/654321         071/654321"));
		list.add(new Customer(3, "Peter", "Detroit",
				"              091/3432432         091/3432432"));
		list.add(new Customer(4, "Alex", "New York",
				"              061/1324234         061/1324234"));
		list.add(new Customer(10, "Dave", "Iowa",
				"              0981/2320026         0981/2320026"));
	}

	public ArrayList getListByOffsetAndLength() {
		ArrayList arrayList = new ArrayList();
		// calc the to value
		int to = this.offset + this.length;
		// if offset or lenght exceed set them to list.size
		if (this.offset > list.size())
			this.offset = list.size();
		if (to > list.size())
			to = list.size();
		// add the list items to the return collection
		for (int i = this.offset; i < to; i++) {
			arrayList.add(list.get(i));
		}
		// return the collection
		return arrayList;
	}

	// get list site
	public int getListSize() {
		return list.size();
	}

	// get pages returns a list of Integer values, representing the pages
	public Collection getPages() {
		Collection collection = new ArrayList();
		// calc how many pages are there
		int pages = list.size() / this.length;
		if (list.size() % this.length != 0)
			pages = pages + 1;
		// fill an collection with all pages
		for (int i = 1; i <= pages; i++) {
			collection.add(new Integer(i));
		}
		return collection;
	}

	// getter and setter methods
	public ArrayList getList() {
		return list;
	}

	public void setList(ArrayList list) {
		this.list = list;
	}

	public int getLength() {
		return length;
	}

	public void setLength(int length) {
		this.length = length;
	}

	public int getOffset() {
		return offset;
	}

	public void setOffset(int offset) {
		this.offset = offset;
	}
}


<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib
	uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html>
<head>
<html:base />
<title>example.jsp</title>
</head>
<body>
<h3>Simple paging with struts tags.</h3>
<table border="1">
<tr>
	<td><b>ID</b></td>
	<td><b>Name</b></td>
	<td><b>City</b></td>
	<td><b>Phone</b></td>
	</tr>
<%-- Iteration over the list --%>
<logic:iterate name="testList" property="listByOffsetAndLength" id="var">
	<tr>
		<td><bean:write name="var" property="id" /></td>
		<td><bean:write name="var" property="name" /></td>
		<td><bean:write name="var" property="city" /></td>
		<td><bean:write name="var" property="phone" /></td>
	</tr>
</logic:iterate>
<tr>
	<td colspan="4"><logic:iterate name="testList" property="pages"
		id="varpage">
		<html:link action="/example" paramName="varpage" paramId="page">
			<bean:write name="varpage" />
		</html:link>
	</logic:iterate></td>
</tr>
</table>
</body>
</html:html>
  

[David Newton]

No, create a minimum test case that fails. Post the related Java and JSP code only.

[Mark E Hansen]

... and please use Code tags around the code. It's so much harder to read otherwise.

If you don't understand what this means, please ask. Don't just continue to post the way you've been doing.

[Riya Carl]

Sorry I will edit the code. I did try to attach the files seperaely though.

[David Newton]

How are you accessing the page? (Like the URL.)

[Riya Carl]

I run this project with tomcat plug-in in eclipse. If I change the example.jsp to a static jsp page e.g. display Hello World, then it works fine.

[David Newton]

So, the URL you're using to access the page is...?

[Riya Carl]

http://localhost:8080/PE/example.jsp

or
http://localhost:8080/PE/

[David Newton]

The action is never being executed; you're accessing the JSP directly.

[David Newton]

I'd also recommend against using the URL mapping you're using, and instead set it to something more reasonable like "*.do", which is the canonical Struts 1 mapping.

[Riya Carl]

Ok. I had mapped it to *.do earlier, however it gave the same error.

So what am I doing wrong that it does not call the action. What should I do?

[David Newton]

Call the action: if you want actions to run you have to go through the normal Struts request processing flow.

There's nothing magic--the action is mapped in the Struts config file. Use that URL. Just calling a JSP doesn't involve Struts at all.

[Riya Carl]

So I created the index.jsp and added it to the web.xml welcome-file

    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>My Title</title>
</head>
<body>
<% java.util.Date d = new java.util.Date(); %>
<h1>
Today's date is <%= d.toString() %> and this jsp page worked!
<a href="example.jsp">click</a>
</h1>
</body>
</html>

When I click on the link< i get the same error:

exception

org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find bean: "testList" in any scope
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

[David Newton]

You're still just calling a JSP: CALL THE ACTION.

[Riya Carl]

Okay, This is what I have modified in struts-config.xml and index.jsp. Now I get HTTP Status 404 No matter if I write /examplejsp or examplejsp in the link.

   <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
<global-forwards>
<forward name="/examplejsp" path="/example.do"></forward>
</global-forwards>
	<action-mappings>
		<action path="/example.do" type="de.laliluna.tutorial.paging.action.ExampleAction" scope="session">
			<forward name="example" path="/example.jsp" />
		</action>
	</action-mappings>
	
</struts-config> 

   <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html>
<head>
<html:base /><head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>My Title</title>
</head>
<body>
<% java.util.Date d = new java.util.Date(); %>
<h1>
Today's date is <%= d.toString() %> and this jsp page worked!
<html:link forward="examplejsp"> Click</html:link>
</h1>
</body>
</html:html>
 

[David Newton]

You're just typing things at random.

Read some Struts documentation, try to follow a tutorial, something.

Normally actions are mapped to *.do. The action would be pathed "/example". The URL would be "/example.do".

http://struts.apache.org/1.x/userGuide/building_controller.html#a4.8.1_ActionMapping_Example

[Riya Carl]

Okay thanks. Is there tutorial where I can find examples on creating struts1.3 application?

[David Newton]

Sorry; didn't know you couldn't access web searches.

http://struts.apache.org/1.3.10/index.html
http://struts.apache.org/1.3.10/userGuide/index.html
http://struts.apache.org/1.3.10/faqs/index.html

http://www.abqswt.com/tutorials/basicStruts/

There are also examples in the distribution.

[Mark E Hansen]

Why do you want to use Struts 1.3? Why not Struts 2?