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Connection to mysql using jsp/jdbc
Posted by: Anitha
Date: May 16, 2006 05:58AM

Hai,

I am writting jsp and Html using JDBC in single file.
while I am excuting that file first null value is inserting into database.
then required from is displaying and entered value is inserting into database(City table)

Please Solve my Problem

Code: I am creating a City Form and entering values into City database.(City.jsp)

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@page import="java.sql.*"%>
<%@page import="java.sql.Driver"%>
<HTML>
<HEAD>
<%@ page
language="java"
contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"
%>
<META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<META name="GENERATOR" content="IBM WebSphere Studio">
<META http-equiv="Content-Style-Type" content="text/css">
<LINK href="theme/Master.css" rel="stylesheet" type="text/css">
<TITLE>City.jsp</TITLE>
</HEAD>
<BODY>
<h1>City</h1>
<form method=post action=/RedCabs/City.jsp>
Name.:<input type=text name=CityName size=15 style=bgcolor:lightblue><br><br>
<input type=submit value=Submit></form>
<jsp:useBean id="db" scope="request" class="SQLBean.ConnectionBean" />
<jsp:setProperty name="db" property="*" />
<%!
ResultSet rs = null ;
int i;
%>
<%
String CityName=request.getParameter("CityName");
System.out.println(CityName);
out.println(CityName);
try{
System.out.println("before connection");
db.connect();
System.out.println("after connection");
i = db.updateSQL("INSERT into City(CityName) VALUES('"+CityName+"')");

}catch(SQLException e) {
throw new ServletException("Your query is not working", e);
}
%>
</BODY>
</HTML>


ConnectionBean.java

package SQLBean;
import java.util.*;
import java.sql.*;



public class ConnectionBean {

private String driver = new String("com.mysql.jdbc.Driver");
private String url= new String("jdbc:mysql://192.168.1.40/test");
private String user = new String("root");
private String password= new String("password");

private Connection dbCon;

public ConnectionBean(){
super();
}

public boolean connect() throws ClassNotFoundException,SQLException{
Class.forName(driver);
dbCon = DriverManager.getConnection(url,user,password);
return true;
}

public void close() throws SQLException{
dbCon.close();
}
public int updateSQL(String sql) throws SQLException{
Statement s = dbCon.createStatement();
int r = s.executeUpdate(sql);
return (r == 0) ? 0 : r;
}
public ResultSet execSQL(String sql) throws SQLException{

Statement s = dbCon.createStatement();
ResultSet r = s.executeQuery(sql);
return (r == null) ? null : r;
}



}

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Subject
Written By
Posted
November 27, 2005 05:27AM
September 24, 2006 10:26AM
December 27, 2007 11:53PM
December 31, 2007 09:54PM
February 19, 2006 11:57PM
Connection to mysql using jsp/jdbc
May 16, 2006 05:58AM
b g
June 09, 2009 04:43AM


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