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  1. 03-08-2011, 05:53 AM #1
    sharanya
    sharanya is offline Member
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    Default how to retrieve data when i select the input from the form

    hi all

    i have a leave report in which i have to see the report based on year and month,quarter like that.
    now i have stucked actually am not getting how to retrieve
    i can select the fields which i want to display but what will be the where condition


    here is my code

    this is the form and when i click on submit i have to retrieve the data


    <HTML>
    <HEAD>
    <SCRIPT TYPE="TEXT/JAVASCRIPT">
    function setup(ans) {
    lit = ''
    if (ans == 'Monthly') {
    lit = lit + '<SELECT NAME="q2" >'
    lit = lit + '<OPTION VALUE="">select</OPTION>'
    lit = lit + '<OPTION >Jan</OPTION>'
    lit = lit + '<OPTION >Feb</OPTION>'
    lit = lit + '<OPTION >Mar</OPTION>'
    lit = lit + '<OPTION >Apr</OPTION>'
    lit = lit + '<OPTION >May</OPTION>'
    lit = lit + '<OPTION >Jun</OPTION>'
    lit = lit + '<OPTION >Jul</OPTION>'
    lit = lit + '<OPTION >Aug</OPTION>'
    lit = lit + '<OPTION >Sep</OPTION>'
    lit = lit + '<OPTION >Oct</OPTION>'
    lit = lit + '<OPTION >Nov</OPTION>'
    lit = lit + '<OPTION >Dec</OPTION>'

    lit = lit + '</SELECT>'
    }
    if (ans == 'Quarterly' ) {
    lit = lit + '<SELECT NAME="q2" >'
    lit = lit + '<OPTION VALUE="">select</OPTION>'
    lit = lit + '<OPTION >01-Jan to 31-Mar</OPTION>'
    lit = lit + '<OPTION >01-Apr to 30-Jun</OPTION>'
    lit = lit + '<OPTION >01-Jul to 30-Sep</OPTION>'
    lit = lit + '<OPTION >01-Oct to 31-Dec</OPTION>'
    lit = lit + '</SELECT>'
    }
    if (ans == 'Half-Yearly' ) {
    lit = lit + '<SELECT NAME="q2" >'
    lit = lit + '<OPTION VALUE="">select</OPTION>'
    lit = lit + '<OPTION >01-Jan to 30-Jun</OPTION>'
    lit = lit + '<OPTION >01-July to 31-Dec</OPTION>'

    lit = lit + '</SELECT>'
    }
    if (ans == 'Yearly' ) {
    lit = lit + '<SELECT NAME="q2" >'
    lit = lit + '<OPTION VALUE="">select</OPTION>'
    lit = lit + '<OPTION >01-Jan to 31-Dec</OPTION>'
    lit = lit + '</SELECT>'
    }
    document.getElementById('rep').innerHTML=lit
    }
    </SCRIPT>
    </HEAD>
    <BODY>

    <FORM ACTION="#" NAME="quest">

    <table align="center" name="lereport">
    <tr>
    <td>
    <label for="yr">Select year</label>
    </td>
    <td>
    <select >
    <option value="0">Select</option>
    <option value="1">2005</option>
    <option value="2">2006</option>
    <option value="3">2007</option>
    <option value="4">2008</option>
    <option value="1">2009</option>
    <option value="2">2010</option>
    <option value="3">2011</option>
    <option value="4">2012</option>

    </select>
    </td>
    </tr>
    <tr>
    <td>

    <label for="reptype">Report type</label>
    </td>
    <td>
    <SELECT NAME="q1" ONCHANGE="setup(document.quest.q1.value)">
    <option value="0">Select</option>
    <option value="Monthly" >Monthly</option>
    <option value="Quarterly">Quarterly</option>
    <option value="Half-Yearly">Half-Yearly</option>
    <option value="Yearly">Yearly</option>

    </SELECT>

    <SPAN ID="rep"></SPAN>
    <td><input type="submit" value="submit"></td>
    </table>
    <table border="1" >




    <tr>
    <th>LeaveType</th>
    <th>LeaveId</th>
    <th>EName</th>
    <th>&nbsp; EId &nbsp;</th>
    <th>&nbsp&nbsp; From &nbsp&nbsp;</th>
    <th>&nbsp&nbsp&nbsp&nbsp To &nbsp&nbsp&nbsp&nbsp</th>
    <th>Tot leaves</th>
    <th>Availed leaves</th>
    <th>Bal leaves</th>
    <th>Recom by</th>
    <th>AppAuth</th>
    <th>Status</th>

    </tr>
    </table>

    </FORM>

    </BODY>
    </HTML>
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  2. 03-08-2011, 08:31 AM #2
    Tolls
    Tolls is offline Moderator
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    Default

    What code have you tried in your servlet?
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  3. 03-08-2011, 10:31 AM #3
    sharanya
    sharanya is offline Member
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    Default

    to retrieve data into a table i have used this code

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">

    <%@ page import="java.sql.*" %>
    <%@ page import="java.io.*" %>*

    <html>
    <head>
    <title>display data from the table using jsp</title>
    </head>
    <body>
    <h2 align="center">Data from the table 'leave_info' of database 'empLeave'</h2>
    <%
    try {
    String connectionURL = "jdbc:mysql://192.168.1.15:3306/empLeave";

    Connection connection = null;

    Statement statement = null;

    ResultSet rs = null;

    Class.forName("com.mysql.jdbc.Driver").newInstance ();

    connection = DriverManager.getConnection(connectionURL, "root", "notallowed");

    statement = connection.createStatement();

    String QueryString = "SELECT * from leave_info";
    rs = statement.executeQuery(QueryString);
    %>
    <TABLE cellpadding="15" border="1" align="center">
    <%
    while (rs.next()) {
    %>
    <TR>
    <TD><%=rs.getString(1)%></TD>
    <TD><%=rs.getString(2)%></TD>
    <TD><%=rs.getString(3)%></TD>
    <TD><%=rs.getString(4)%></TD>
    <TD><%=rs.getString(5)%></TD>
    <TD><%=rs.getString(6)%></TD>
    <TD><%=rs.getString(7)%></TD>
    <TD><%=rs.getString(8)%></TD>
    <TD><%=rs.getString(9)%></TD>
    <TD><%=rs.getString(10)%></TD>
    <TD><%=rs.getString(11)%></TD>
    <TD><%=rs.getString(12)%></TD>
    <TD><%=rs.getString(13)%></TD>
    <TD><%=rs.getString(14)%></TD>
    <TD><%=rs.getString(15)%></TD>
    <TD><%=rs.getString(16)%></TD>



    </TR>
    <% } %>
    <%

    rs.close();
    statement.close();
    connection.close();
    } catch (Exception ex) {
    %>
    </font>
    <font size="+3" color="red"></b>
    <%
    out.println("Unable to connect to database.");
    }
    %>
    </TABLE><TABLE align="center">
    <TR>
    <TD><FORM ACTION="retrieve.jsp" method="get" >
    <button type="submit">Back</button></TD>
    </TR>
    </TABLE>
    </font>
    </body>
    </html>

    i want apply the same logic

    but now my problem is i have to retrieve data when the user selects the year and the type .
    so what i have to give in where condition y bcoz the user is selecting it from the browser.
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  4. 03-08-2011, 10:39 AM #4
    Tolls
    Tolls is offline Moderator
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    Default

    Why do people learn this stuff via JSPs?
    It's sooo wrong.
    All that db code should be in a servlet.
    I realise this is probably how you're being taught, but it really is the wrong way round.

    Anyway do you know SQL?
    Do you know how to get parameters from a request?

    If not then you need to learn about both of those things, and probably not while writing a JSP page.
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