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Editorial Team
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Asked: 2026-06-02T02:28:58+00:00

i am trying to write a API using JSP/JSTL to generate JSON output but

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i am trying to write a API using JSP/JSTL to generate JSON output but its not working in am not able to figure out the problem. Here i am getting problem when using C tag Library for reading the array.Here is the code:

<%@ page import="java.lang.*,java.io.*,java.util.*,java.sql.*"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%>
<%@ taglib prefix="json" uri="http://www.atg.com/taglibs/json" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<sql:setDataSource var="snapshot" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/abc" user="root"  password="xxx"/>
<sql:query dataSource="${snapshot}" var="result" sql="SELECT countries_name,countries_iso_code_2  FROM countries"/>

<json:object> 
    <json:object name="list">
        <c:forEach var="row" items="${result.rows}">
        <json:object items="countries">
            <json:property name="Country" value="${row.countries_name}"/>
            <json:property name="iso" value="${row.countries_iso_code_2}"/>
        </json:object>
        </c:forEach>
  </json:object>
</json:object>

The Exception i am getting is as 

org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.ws.indexajson_jsp
    org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:178)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

Please help me to rectify the problem. Thanks.

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1 Answer

  1. Editorial Team

    I just have solved it. i just removed C Tag Library changed json generating code as 

    <json:object> 
    <json:object name="list">
        <json:array name="countries" var="row" items="${result.rows}">
            <json:object>
                <json:property name="Country" value="${row.countries_name}"/>
                <json:property name="iso" value="${row.countries_iso_code_2}"/>
            </json:object>
        </json:array>
    </json:object>
</json:object>

    and it works. i got the problem was my array syntax.

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