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vijayakrishnan
delete
2 Answer(s)      4 years and 2 months ago
Posted in : JSP-Servlet


how delete only one row in the database using jsp.database is mysql


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October 19, 2010 at 4:35 PM


Hi Friend,

Try the following code:

1)user.jsp:

<%@ page import="java.sql.*" %>
<html>
<head>
<script language="javascript">
function deleteRecord(id){
window.open('http://localhost:8080/examples/jsp/deleteuser.jsp?id='+id,'mywindow','width=500, height=350,toolbar=no,resizable=yes,menubar=yes');
}
</script>
</head>
<body>
<br><br>
<table border="1">
<tr><th>Emp ID</th><th>Name</th><th>Salary</th><th>Designation</th></tr>
<%
Connection con = null;
String url = "jdbc:mysql://localhost:3306/";
String db = "test";
String driver = "com.mysql.jdbc.Driver";
String userName ="root";
String password="root";
int sumcount=0;
Statement st;
try{
Class.forName(driver).newInstance();
con = DriverManager.getConnection(url+db,userName,password);
String query = "select * from employee";
st = con.createStatement();
ResultSet rs = st.executeQuery(query);
%>
<%
while(rs.next()){
%>
<tr><td><%=rs.getString("empid")%></td>
<td><%=rs.getString("name")%></td>
<td><%=rs.getString("salary")%></td>
<td><%=rs.getString("designation")%></td>
<td><input type="button" name="edit" value="Delete" style="background-color:red;font-weight:bold;color:#ffffff;" onclick="deleteRecord(<%=rs.getString(1)%>);" ></td>
</tr>
<%
}
%>
<%
}
catch(Exception e) {
e.printStackTrace();
}
%>
</table>
</form>
</body>
</html>

2)deleteuser.jsp:

<%@page import="java.sql.*"%>
<%
String id=request.getParameter("id");
int no=Integer.parseInt(id);
System.out.println(no);
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
Statement st = conn.createStatement();
st.executeUpdate("DELETE FROM employee WHERE empid = '"+no+"'");
out.println("Record is deleted successfully");
}
catch(Exception e){}
%>

Thanks



October 19, 2010 at 5:55 PM


sir i want to show only last stored record for another page.how can i set the codition for that sir



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