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madhu
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 Posted: Wed Jul 16, 2003 9:05 pm Post subject: Struts Error : org.apache.jasper.JasperException: Cannot fin |
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I am getting the following error when I try to iterate through my VO
in my .jsp file.
"org.apache.jasper.JasperException: Cannot find bean SearchResults in
scope request" where "SearchResults" is the attribute which i set for
my VO.
ok, here is what I am doing. can u please correct me where I am going
wring. I am doing search page and I created a collection for the
search results. I want
to display those results in the SearchResults.jsp
I am attaching my code. This is my logic
1.Blog.java - A bean class for my blog attributes
2.TempBlogArray - A collection of blogs
3.SearchAction.execute - I created a list to store
the TempBlogArray, and I am using
request.setAttribute("SearchResults", List);
4. In my SearchResults.jsp ( I am importing "Blog" ,
then in line 218 i have the logic:iterate code.
where in I am using these lines
<logic:iterate id="blog" name="SearchResults"
scope="request" collection="SearchResults"
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property="title"/
5. In place if collection I tried using
type="aBlog", but it is assigning a null value to
the aBlog here and i am getting different errors
here.
6. I also added the scope in my struts-config.xml as
type="SearchResultsAction" name="searchResultsForm"
scope="request" input="/SearchResults.jsp"
Any help regarding this error would be gratly
appreciated.
Thanks,
Madhuri.
Souce Code -
-------------------------------------------------
Blog.java
/**
* Created by IntelliJ IDEA.
* User: Madhuri
* Date: Jul 14, 2003
* Time: 11:11:20 PM
* To change this template use Options | File Templates.
*/
package core;
public class Blog {
long blog_id;
String title;
String description;
String location;
String category;
int rank;
int parent_blog_id;
String message;
String owner;
String create_date;
String update_date;
String blog_type;
int publish_flag;
String publish_date;
int is_atchmt_present;
int Num_of_Threads;
public long getBlog_id() {
return blog_id;
}
public void setBlog_id(long blog_id) {
this.blog_id = blog_id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public int getRank() {
return rank;
}
public void setRank(int rank) {
this.rank = rank;
}
public int getParent_blog_id() {
return parent_blog_id;
}
public void setParent_blog_id(int parent_blog_id) {
this.parent_blog_id = parent_blog_id;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public String getOwner() {
return owner;
}
public void setOwner(String owner) {
this.owner = owner;
}
public String getCreate_date() {
return create_date;
}
public void setCreate_date(String create_date) {
this.create_date = create_date;
}
public String getUpdate_date() {
return update_date;
}
public void setUpdate_date(String update_date) {
this.update_date = update_date;
}
public String getBlog_type() {
return blog_type;
}
public void setBlog_type(String blog_type) {
this.blog_type = blog_type;
}
public int getPublish_flag() {
return publish_flag;
}
public void setPublish_flag(int publish_flag) {
this.publish_flag = publish_flag;
}
public String getPublish_date() {
return publish_date;
}
public void setPublish_date(String publish_date) {
this.publish_date = publish_date;
}
public int getIs_atchmt_present() {
return is_atchmt_present;
}
public void setIs_atchmt_present(int is_atchmt_present) {
this.is_atchmt_present = is_atchmt_present;
}
public int getNum_of_Threads() {
return Num_of_Threads;
}
public void setNum_of_Threads(int num_of_Threads) {
Num_of_Threads = num_of_Threads;
}
}
-------------------------------------------------
TempBlogArray.java
/**
* Created by IntelliJ IDEA.
* User: Madhuri
* Date: Jul 14, 2003
* Time: 11:30:06 PM
* To change this template use Options | File Templates.
*/
package core;
import java.util.ArrayList;
public class TempBlogArray {
public ArrayList getBlogList()
{
ArrayList blogList;
blogList = new ArrayList();
Blog aBlog = new Blog();
aBlog.setBlog_id(1);
aBlog.setBlog_type("C");
aBlog.setCategory("Food");
aBlog.setPublish_flag(0);
aBlog.setRank(5);
aBlog.setTitle("Restaurants in San Jose");
blogList.add(0, aBlog);
aBlog.setBlog_id(2);
aBlog.setBlog_type("C");
aBlog.setCategory("Food");
aBlog.setPublish_flag(1);
aBlog.setRank(4);
aBlog.setTitle("Mexican & Japanese Restaurants in San Jose");
blogList.add(1, aBlog);
aBlog.setBlog_id(3);
aBlog.setBlog_type("C");
aBlog.setCategory("Music");
aBlog.setPublish_flag(1);
aBlog.setRank(4);
aBlog.setTitle("classical guitar,San Jose");
blogList.add(2, aBlog);
aBlog.setBlog_id(4);
aBlog.setBlog_type("C");
aBlog.setCategory("Music");
aBlog.setPublish_flag(1);
aBlog.setRank(4);
aBlog.setTitle("Guitar Shows Dying ?");
blogList.add(3, aBlog);
return blogList;
}
}
----------------------------------------------------------------
SearchAction.java
/**
* Created by IntelliJ IDEA.
* User: Madhuri
* Date: Jul 15, 2003
* Time: 12:09:54 AM
* To change this template use Options | File Templates.
*/
import java.io.IOException;
import java.util.*;
import javax.servlet.ServletException;
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 core.*;
public class SearchAction extends Action
{
protected List getSearchResults(String keyword)
{
TempBlogArray blogArray = new TempBlogArray();
List resultBlogList = new ArrayList();
Blog aBlog;
if ( keyword.equalsIgnoreCase("FOOD") )
{
aBlog = (Blog)(blogArray.getBlogList().get(1));
resultBlogList.add(aBlog);
return resultBlogList;
}
return resultBlogList;
}
public ActionForward execute(ActionMapping mapping,ActionForm
form,HttpServletRequest request,
HttpServletResponse response)throws IOException, ServletException
{
List resultList = null;
// Default target to success
String target = new String("success");
if ( form != null )
{
// Use the SearchForm to get the search keyword
SearchForm searchForm = (SearchForm)form;
String keyword = searchForm.getKeyword();
resultList = getSearchResults(keyword);
}
// Set the target to failure
if ( resultList == null )
{
target = new String("failure");
}
else
{
System.out.println("SearchAction: result = " + resultList);
request.setAttribute("SearchResult", resultList);
}
// Forward to the appropriate View
return (mapping.findForward(target));
} // end of execute
}
------------------------------------------------------------
SearchForm.java
/**
* Created by IntelliJ IDEA.
* User: Madhuri
* Date: Jul 15, 2003
* Time: 11:25:52 AM
* To change this template use Options | File Templates.
*/
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class SearchForm extends ActionForm
{
private String keyword = null;
public String getKeyword()
{
return (keyword);
}
public void setKeyword(String keyword)
{
this.keyword = keyword;
}
public void reset(ActionMapping mapping,HttpServletRequest request)
{
this.keyword = null;
}
}
-----------------------------------------------
SearchResults.jsp ( i am giving only the relevant code here)
<%@ page language="java" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>
<%@ page import ="java.util.*" %>
<%@ page import ="core.Blog" %>
<jsp:useBean id="aBlog" class="core.Blog"/>
<%String myKeyword = (String)request.getAttribute("SearchResults");%>
<logic:iterate id="blog" name="SearchResults" scope="request"
collection="<%=request.getAttribute(myKeyword)%>" >
<tr align="left">
<td>
<bean:write name="blog" scope="page"
property="title"/>
</td>
<td>
<bean:write name="blog" scope="page"
property="Num_of_Threads"/>
</td>
<td>
<bean:write name="blog" scope="page"
property="Publish_date"/>
</td>
</tr>
</logic:iterate>
------------------------------------------------------------
struts-config.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD
Struts Configuration 1.1//EN"
"C:jakarta-struts-1.1-b3webappsstruts-documentationdtdsstruts-config_1_1.dtd">
<struts-config>
<form-beans>
<form-bean name="lookupForm" type="LookupForm"/>
<form-bean name="searchForm" type="SearchForm"/>
<form-bean name="searchResultsForm" type="SearchResultsForm"/>
</form-beans>
<action-mappings>
<action path="/Lookup" type="LookupAction" name="lookupForm"
input="/index.jsp">
<forward name="success" path="/quote.jsp"/>
<forward name="failure" path="/index.jsp"/>
</action>
<action path="/Search" type="SearchAction" name="searchForm"
input="/Search.jsp">
<forward name="success" path="/SearchResults.jsp"/>
<forward name="failure" path="/Search.jsp"/>
</action>
<action path="/SearchResults" type="SearchResultsAction"
name="searchResultsForm" scope="request" input="/SearchResults.jsp">
<forward name="success" path="/SearchResults.jsp"/>
<forward name="failure" path="/Search.jsp"/>
</action>
</action-mappings>
<message-resources parameter="ApplicationResources"/>
</struts-config>
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