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lissy
Alert in Servlet
0 Answer(s)      3 years and 10 months ago
Posted in : JSP-Servlet


<p>Hi</p>

<p>I want to delete record from oracle db, i need alert message saying 'Are you sure you want to delete?' with yes and no buttons, if yes, the data should delete if no control shd be in the same page.  I have no idea how to do this...the previous page is retrieve.jsp which has the data based on form input with edit and Delete button end of each row, when i click delete it shd alert me....This is my servlet code:</p>

<p>DeleteData.java</p>

<p>[code]
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;</p>

<p>public class DeleteData extends HttpServlet {</p>

<pre class="prettyprint">public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    response.setContentType("text/html");
    PrintWriter out = response.getWriter();
</code></pre>

<p>out.println("<title>Delete Page</title>" + "<h1 align=\"center\"></h1>" + "<body bgcolor=#99CCFF>");
out.println("<center><td align=\"center\" width=\"37\"> <strong><img title=\"Go back\" src=\"Undo.gif\" width=\"20\" height=\"20\" onClick=\"javascript:history.back()\" style=\"vertical-align:middle;\" onMouseOver=\"this.style.cursor='hand';\"></strong></td></center>");
        System.out.println("Oracle 10g Connect Example.");
        Connection conn = null;
        String url = "jdbc:oracle:thin:@10.44.6.75:1529:nrsprd";
        String driver = "oracle.jdbc.driver.OracleDriver";
        String user = "root";
        String pass = "root";
        String Cabinet =request.getParameter("Cabinet");
        Statement stmt;
        try {
            Class.forName(driver).newInstance();
            conn = DriverManager.getConnection(url, user, pass);
            System.out.println("Connected to the database");
            ArrayList al = null;
            ArrayList userList = new ArrayList();
            String query = "DELETE FROM Carr_ethernet  WHERE Cabinet='" + Cabinet + "'";
            stmt = conn.createStatement();
            int i = stmt.executeUpdate(query);
            System.out.println("query" + query);
            if (i > 0) {</p>

<pre class="prettyprint">            out.print("&lt;br&gt;");
            out.print("&lt;table  align=\"center\" style=\"background-color: white;\"width=\"50%\" border=\"1\"&gt;");
            out.print("&lt;tr&gt;&lt;th&gt;Data Deleted Successfully&lt;/th&gt;&lt;/tr&gt;");
            out.print("&lt;/table&gt;");
</code></pre>

<p> }
            conn.close();
            System.out.println("Disconnected from database");
            stmt.close();
            conn.close();
        } catch (Exception e) {
            e.printStackTrace();
        }</p>

<pre class="prettyprint">}
</code></pre>

<p>}
[/code]</p>

<p>Please help me.</p>

<p>Thanks in advance,
Lissy</p>

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