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  1. 01-12-2009, 07:33 PM #1
    gixerino
    gixerino is offline Member
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    Default Dynamic display of images

    Hello,

    I when I run the web application (Java server pages and database MySql), in prewiew I have a problem with the display of the images extract from the database.
    I view al the record of the database but I dont view the images.
    I dont understand because i have this problem.

    Help me please.
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  2. 01-13-2009, 03:35 AM #2
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    Eranga
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    Default

    How did you do that? Can you show it here?
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  3. 01-13-2009, 09:18 AM #3
    gixerino
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    Here my JSP:
    Java Code: 
       <sql:query var="rsResult" dataSource="jdbc/Roberto">
SELECT * FROM portfolio
</sql:query>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1>Gestione Portfolio</h1>
        <br>
        <a href="">Inserisci un nuovo record</a>
        <br>
            <c:set var="noOfRows" value="6" />
        <sql:query var="rsGestionePortfolio" dataSource="jdbc/Roberto" sql="SELECT * FROM portfolio" startRow="${param.start}" maxRows="3">

</sql:query>
<c:choose>
<c:when test="${rsGestionePortfolio.rowCount == 0}">
    Spiacente non ci sono pił record da visualizzare
</c:when>
<c:otherwise>
    Elenco dei lavori eseguiti
<table border="1">
<!-- column headers -->
<tr>
<th>Ordine</th>
<th>Nome del dominio</th>
<th>Indirizzo web</th>
<th>Note</th>
<th>didascalia</th>
</tr>
<!-- column data -->
<c:forEach var="row" items="${rsGestionePortfolio.rows}">
<tr>
<form action="aggiornaPortfolio.jsp" method="post">
<td><input type="text" name="ordine" value="${row.ordine}" /></td>
<td><input type="text" name="nomeDominio" value="${row.nomeDominio}" /></td>
<td><input type="text" name="indirizzoWeb" value="${row.indirizzoWeb}" /></td>
<td><input type="text" name="note" value="${row.note}" /></td>
<td>
[COLOR="Red"]<img src="public/portfolio/${row.didascalia}" alt="'.${row.nomeDominio}.'" border="0"/>[/COLOR]</td>
<td><input type="submit" value="Aggiorna"><input type="hidden" size="1" name="id_portfolio" value="${row.id_portfolio}" /></td>
</form>
<td>
<form action="" method="post">
<input type="submit" value="Elimina"><input type="hidden" name="id_portfolio" size="1" value="${row.id_portfolio}" />
</form>
</td>
</tr>
</c:forEach>
</table>
</c:otherwise>
</c:choose>
        </br>
<!--- Inizio script paginazione ---->
<c:choose>
<c:when test="${param.start > 0}">
 <a href="">
 Previous page</a>
 </c:when>
 <c:otherwise>
     Previous page
 </c:otherwise>
 </c:choose>
 <c:choose>
     <c:when test="${rsGestionePortfolio.limitedByMaxRows}">
         <a href="">
         Next page </a>
  </c:when>
         <c:otherwise>
             Next page
         </c:otherwise>
 </c:choose>
<!---- Fine script paginazione ---->
    </body>
</html>
    I have signed the record of Photo in red.

    :)
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  4. 01-13-2009, 09:32 AM #4
    mtyoung
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    i have a question, we can directly use ${varName} ?
    or we should use <c:out value="${varName}" />?
    http://java.sun.com/j2se/1.5.0/docs/api/index.html
    http://java.sun.com/javase/6/docs/api/
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  5. 01-13-2009, 02:36 PM #5
    gixerino
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    I try this solution but the result is the same:

    Java Code: 
    <img src="<c:out value="public/portfolio/${row.didascalia}"/>" border="0"/>
    :confused:
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  6. 01-14-2009, 03:46 AM #6
    mtyoung
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    then...
    is the img path correct?
    "public" folder is the subfolder of the folder store this jsp?
    Last edited by mtyoung; 01-14-2009 at 03:52 AM.
    http://java.sun.com/j2se/1.5.0/docs/api/index.html
    http://java.sun.com/javase/6/docs/api/
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  7. 01-14-2009, 09:32 AM #7
    gixerino
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    I have the JSP file and the path "Public" under the directory "web".
    Here the structure:

    Web
    ...|
    ..index.jsp
    ...|
    ..Public
    .......|
    ......Portfolio

    :)
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  8. 01-15-2009, 02:55 PM #8
    gixerino
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    Default

    Sorry I have a doubt.


    web.xml file to view images from the database.

    Here is my web.xml file:
    Java Code: 
        <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        </welcome-file-list>
    <resource-ref>
        <description>Database per amministrazione contenuti sito Roberto</description>
        <res-ref-name>jdbc/Roberto</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>
    <context-param>
        <param-name>
        javax.servlet.jsp.jstl.sql.maxRows
       </param-name>
       <param-value>
           100
       </param-value>
    </context-param>
        <context-param>
        <param-name>
        javax.servlet.jsp.jstl.sql.parseDate
       </param-name>
       <param-value>
           dd/MM/yy
       </param-value>
    </context-param>
        </web-app>
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