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faced error in jsp simple custom tag implemention

pedababu murala
Greenhorn

Joined: May 25, 2008
Posts: 1
please anybody could find why my application giving ServletException
The following are the source files
index.html

<html>
<body>
<form method="GET" action="http://localhost:8888/cust5/druginfo.do">
<table border="1" align="center">
<tr>
<td><select id="drugs" multiple size="7" style="width: 100;">
<option value="B4112">B4112</option>
<option value="OMEZ">OMEZ</option>
<option value="BCOMPLEX">BCOMPLEX</option>
<option value="AVIL">AVIL</option>
<option value="COLDACT">COLDACT</option>
</select></td>
</tr>
<tr>
<td><input type="submit" name="submit" value="submit"></td>
</tr>
</table>
</form>
</body>
</html>

web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<servlet>
<servlet-name>druginfo.do</servlet-name>
<servlet-class>HandlerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>druginfo.do</servlet-name>
<url-pattern>/druginfo.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/index.html</welcome-file>
</welcome-file-list>

<jsp-config>
<taglib>
<taglib-uri>http://thomson.pdi/tags</taglib-uri>
<taglib-location>/WEB-INF/simple.tld</taglib-location>
</taglib>
</jsp-config>

</web-app>

simple.tld
<?xml version="1.0" encoding="ISO-8859-1" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd" version="2.0">

<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<uri>http://thomson.pdi/tags</uri>
<description>
Thomson custom tags
</description>
This is a dummy tag solely to satisfy DTD requirements
<tag>
<name>drugsinfo</name>
<tag-class>SimpleTagTest5</tag-class>
<body-content>scriptless</body-content>
<attribute>
<name>drugList</name>
<requried>true</requried>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
</taglib>

HandlerServlet.java

import java.io.IOException;
import java.rmi.ServerException;

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


public class HandlerServlet extends HttpServlet {
public void doGet(HttpServletRequest req,HttpServletResponse res)throws IOException,ServerException{
res.setContentType("text/html");
String drugs[]=req.getParameterValues("drugs");
try{
req.setAttribute("durgs", drugs);
RequestDispatcher rd=req.getRequestDispatcher("/result.jsp");
rd.forward(req,res);
}catch(Exception e)
{
e.printStackTrace();
}
}
}

SimpleTagTest5.java

import java.io.IOException;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;

public class SimpleTagTest5 extends SimpleTagSupport{

private String[] drugList;

public void setDrugList(String[] drugList) {
this.drugList = drugList;
}
public void doTag()throws IOException,JspException{

for(String drug rugList){
getJspContext().setAttribute("drug",drug);
getJspBody().invoke(null);
}
}
}

result.jsp


<%@ taglib uri="http://thomson.pdi/tags" prefix="s"%>
<table border="2">
<caption>Drugs Information</caption>
<s rugsinfo drugList="${durgs}">
<tr>
<td>
${drug}
</td>
</tr>
</s rugsinfo>
</table>


Pedababu .M
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61420
    
  67

Please be sure to use UBB code tags when posting code to the forums. Unformatted code is extremely hard to read and many people that might be able to help you will just move along. Please read this for more information.

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