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Old July 31st, 2004, 02:24 PM
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Default problem with jdbc

Hi,

I am having problems running code on page 91 of beginning JSP2.0.

My code is :

<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jstl/sql_rt" prefix="sql" %>

<sql:setDataSource var="datasource"
                     url="jdbc:mysql://localhost:8080/publish"
                    driver="com.mysql.jdbc.Driver"
                   user="root" password="admin" />


           <sql:query var="publish">

            select id,title,price from book
            </sql:query>

            <html>
            <head>
            <body>
            <table>
            <tr>
            <td>id</td>
            <td>title</td>
            <td>price</td>
            <c:forEach items="${publish.row}" var="row">
            <tr>
            <td>
            <c:out value="${row.id}" /></td>
            <td>
            <c:out value="${row.title}" /></td>
            <td>
            <c:out value="${row.price}" /></td>
            </tr>
            </c:forEach>
            </table>
            </body>
            </head>
            </html>

and the error I am getting is :


org.apache.jasper.JasperException: Unable to get connection, DataSource invalid: "null"
        at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:254)
        at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet .java:853)
        at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:494)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(St andardContext.java:2416)
        at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.valves.ErrorDispatcherValve.in voke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:174)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.coyote.tomcat4.CoyoteAdapter.service(Co yoteAdapter.java:223)
        at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:601)
        at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:392)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:565)
        at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:619)
        at java.lang.Thread.run(Thread.java:534)


root cause

javax.servlet.ServletException: Unable to get connection, DataSource invalid: "null"
        at org.apache.jasper.runtime.PageContextImpl.handlePa geException(PageContextImpl.java:533)
        at org.apache.jsp.book_jsp._jspService(book_jsp.java: 129)
        at org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:137)
        at javax.servlet.http.HttpServlet.service(HttpServlet .java:853)
        at org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:210)
        at org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:295)
        at org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:241)
        at javax.servlet.http.HttpServlet.service(HttpServlet .java:853)
        at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:494)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(St andardContext.java:2416)
        at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.valves.ErrorDispatcherValve.in voke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:641)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:174)
        at org.apache.catalina.core.StandardPipeline$Standard PipelineValveContext.invokeNext(StandardPipeline.j ava:643)
        at org.apache.catalina.core.StandardPipeline.invoke(S tandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(Cont ainerBase.java:995)
        at org.apache.coyote.tomcat4.CoyoteAdapter.service(Co yoteAdapter.java:223)
        at org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:601)
        at org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:392)
        at org.apache.tomcat.util.net.TcpWorkerThread.runIt(P oolTcpEndpoint.java:565)
        at org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:619)
        at java.lang.Thread.run(Thread.java:534


I AM WORKING ON tomcat 4.1.27.

please help me guys with this.

protozoa
 
Old August 4th, 2004, 05:07 AM
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Default

check ur datasource name and its connection to your file


PRAVEEN
 
Old August 14th, 2004, 04:49 AM
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Default

I have put mysql-connector-java-2.0.14-bin.jar in tomcat/common/lib but still I am getting the

 Unable to get connection, DataSource invalid: "No suitable driver".
 
Old December 30th, 2006, 06:08 AM
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Default

Quote:
quote:Originally posted by praveen
 check ur datasource name and its connection to your file


PRAVEEN
plz use the following for getting connection-

<sql:setDataSource var="datasource"
                     url="jdbc:mysql://localhost:3306/shopping_cart"
                    driver="com.mysql.jdbc.Driver"
                   user="deepak" password="deepak" />

plz put 3306 inplace of 8080 if u are running your application at localhost.






sushil pal





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