How to Retrieve Rows From ResultSet for MySQL in JSP
The ResultSet object is used by Java and JavaServer Pages (JSP) to call a table of data from a MySQL database. The ResultSet object can be used to retrieve the rows of a database and display them in a JSP page. Notepad is a free, built-in text editor of Windows that allows you to edit JSP pages and insert the correct code to retrieve rows from ResultSet for MySQL.
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Instructions
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Click “Start,” “All Programs” and select “Notepad.”
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2
Click “File” and select “Open.” Select the JSP file and click “Open.”
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Copy and paste the following code into your JSP page in between the </body> and <body> tags, where you would like the rows from MySQL to appear:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;public class GetNumberOfRowsScrollableResultSet_MySQL {
public static Connection getConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/databaseName";
String username = "root";
String password = "root";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
conn = getConnection();
String query = "select id from employees";
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);rs = stmt.executeQuery(query);
// extract data from the ResultSet scroll from top
while (rs.next()) {
String id = rs.getString(1);
System.out.println("id=" + id);
}
// move to the end of the result set
rs.last();
// get the row number of the last row which is also the row count
int rowCount = rs.getRow();
System.out.println("rowCount=" + rowCount);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
rs.close();
stmt.close();
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
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4
Click “File” and select “Save.”
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Upload the saved JSP file to your Web server using an FTP or Telnet client.
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