Querry Result
<%@ page errorPage="error.jsp" import="java.sql.*" %>
<%! // --------------- inits for the servlet --------------
// The database connection
Connection con;
// The statement
Statement stmt;
// The queryString
String queryString =null;
// ---- configure this for your site
String username = "nobody";
String password = null;
// The URL that will connect to TECFA's MySQL server
// Syntax: jdbc:TYPE:machine:port/DB_NAME
// String url = "jdbc:mysql:3306//localhost/dexian";
String url = "jdbc:mysql://tecfa.unige.ch:3306/dexian";
%>
<% // --------------- code for the service method --------------
// Let's see if we got a request
queryString = request.getParameter ("QUERYSTRING");
if ((queryString != "") && (queryString != null)) {
try {
Class.forName("org.gjt.mm.mysql.Driver");
// Establish Connection to the database at URL with usename and password
con = DriverManager.getConnection(url, username, password);
out.println ("Ok, connection to the DB is working.");
} catch (Exception e) // (ClassNotFoundException and SQLException)
{
throw(new UnavailableException(this, "Sorry! The Database didn't load!"));
}
try {
// out.println ("The querry string is:
");
// out.println ( queryString + "
" );
// out.println("Query Result
");
out.println("");
stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(queryString);
ResultSetMetaData rsMeta = rs.getMetaData();
// Get the N of Cols in the ResultSet
int noCols = rsMeta.getColumnCount();
out.println("");
for (int c=1; c<=noCols; c++) {
String el = rsMeta.getColumnLabel(c);
out.println("| " + el + " | ");
}
out.println("
");
while (rs.next()) {
out.println("");
for (int c=1; c<=noCols; c++) {
String el = rs.getString(c);
out.println("| " + el + " | ");
}
out.println("
");
}
out.println("
");
}
catch (SQLException ex ) {
out.println ( "" );
while (ex != null) {
out.println("Message: " + ex.getMessage ());
out.println("SQLState: " + ex.getSQLState ());
out.println("ErrorCode: " + ex.getErrorCode ());
ex = ex.getNextException();
out.println("");
}
out.println ( "" );
}
}
%>
Sun Dexian December 2000
Source: inquiry.jsp.txt