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This might be a noob question but i'm stuck in this error. I'm using Tomcat 7.0.34

WebContent/WEB-INF/lib
       jstl-1.2-sources.jar
       jstl-1-2.jar
       mysql-connector-java-5.1.31

below is my jsp code.

<sql:setDataSource var="con" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/test" user="root" password=""/>
    <sql:query var="result" sql="select * from account" dataSource="${con }"/>
    <c:forEach var="rows" items="${result.rows }">
        ${rows.email}
    </c:forEach>

full stack trace:

SEVERE: Servlet.service() for servlet [jsp] in context with path [/JavaPMS] threw exception [java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/sql/SQLExecutionTag] with root cause
java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.sql.SQLExecutionTag
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
    at org.apache.jasper.compiler.Parser.parseCustomTag(Parser.java:1223)
    at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1452)
    at org.apache.jasper.compiler.Parser.parse(Parser.java:138)
    at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:242)
    at org.apache.jasper.compiler.ParserController.parse(ParserController.java:102)
    at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:373)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
    at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:657)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:744)

it seems to be working fine if I'll remove <sql:query/>.

Thank you.

blitzen12
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3 Answers3

2

please download both this jar and try this hopefully is should work.

put them in below location

WebContent/WEB-INF/lib

Arjun Prajapati
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    no need for jsp-api.jar it's already included in the tomcat lib by default. and also what's the difference between jstl-1.2 and jstl-1.2.1? I notice it won't work if combine jstl-1.2.1.jar and jstl-1.2-source.jar. – blitzen12 Aug 09 '14 at 03:22
0

you have specified query attribute , but it should be like below,

<sql:setDataSource var="con" driver="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost/test" user="root" password=""/>
    <sql:query var="result" dataSource="${con }">
select * from account
</sql:query>
    <c:forEach var="rows" items="${result.rows }">
        ${rows.email}
    </c:forEach>

it should work as expected

Santhosh
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  • same thing works for me .check whether you have imported essential tag libs – Santhosh Aug 08 '14 at 09:00
  • the exception suggests that `Execution` tag lib is missing . try remove the tag libs and add it again – Santhosh Aug 08 '14 at 09:02
  • java SqlExecutionTag class is included in jstl-1.2.jar. So what do u mean by Execution tag lib? – blitzen12 Aug 08 '14 at 09:19
  • this url `<%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql"%>` indicates support for sql tags . have you included this ? – Santhosh Aug 08 '14 at 09:21
  • your exception says the compiler cant find the class, that is required to execute the query in its class path – Santhosh Aug 08 '14 at 09:22
  • yes. both `<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>` is included – blitzen12 Aug 08 '14 at 09:34
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I was also getting the same error, every time I run the app, I tired changing the mysql connector dependencies with several version but error was still their, I read my code many time and not found anything also tried cj and without cj in driver even then it doesn't work but then I re-load my Intellij IDEA Ultimate edition (IDE) and guess it's working :-<>

monukd01dev
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