<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ page import="java.sql.*" %> <%@ page import="java.io.*" %> <html> <head> <title>display data from the table using jsp</title> </head> <body> <TABLE style="background-color: #ffffcc;"> <TR> <TD align="center"> <h2>To display all the data from the table click here...</h2></TD> </TR> <TR> <TD align="center"><A HREF="ConnectJspToMysql.jsp"> <font size="4" color="blue">show data from table</font></A></TD> </TR> </TABLE> </body> </html>
Save this code with the name "welcome_to_database_query.jsp" in the application directory in Tomcat. Start tomcat server and type url 'http://localhost:8080/user/welcome_to_database_query.jsp' in address bar of browser and run.
This page has a link, to show data from the database click on the link that calls another .jsp file named ConnectJspToMysql.jsp
ConnectJspToMysql.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ page import="java.sql.*" %> <%@ page import="java.io.*" %> <html> <head> <title>display data from the table using jsp</title> </head> <body> <h2>Data from the table 'stu_info' of database 'student'</h2> <% try { /* Create string of connection url within specified format with machine name, port number and database name. Here machine name id localhost and database name is student. */ String connectionURL = "jdbc:mysql://localhost:3306/student"; // declare a connection by using Connection interface Connection connection = null; // declare object of Statement interface that is used for executing sql statements. Statement statement = null; // declare a resultset that uses as a table for output data from tha table. ResultSet rs = null; // Load JBBC driver "com.mysql.jdbc.Driver". Class.forName("com.mysql.jdbc.Driver").newInstance(); /* Create a connection by using getConnection() method that takes parameters of string type connection url, user name and password to connect to database. */ connection = DriverManager.getConnection(connectionURL, "root", "root"); /* createStatement() is used for create statement object that is used for sending sql statements to the specified database. */ statement = connection.createStatement(); // sql query to retrieve values from the secified table. String QueryString = "SELECT * from stu_info"; rs = statement.executeQuery(QueryString); %> <TABLE cellpadding="15" border="1" style="background-color: #ffffcc;"> <% while (rs.next()) { %> <TR> <TD><%=rs.getInt(1)%></TD> <TD><%=rs.getString(2)%></TD> <TD><%=rs.getString(3)%></TD> <TD><%=rs.getString(4)%></TD> </TR> <% } %> <% // close all the connections. rs.close(); statement.close(); connection.close(); } catch (Exception ex) { %> </font> <font size="+3" color="red"></b> <% out.println("Unable to connect to database."); } %> </TABLE><TABLE> <TR> <TD><FORM ACTION="welcome_to_database_query.jsp" method="get" > <button type="submit"><-- back</button></TD> </TR> </TABLE> </font> </body> </html>
Save this code with name ConnectJspToMysql.jsp in the same dirctory of welcome_to_database_query.jsp. Click on the link given in the first jsp page,that calls this jsp page and show all data from the table.
Click on the <--back button to go to first page of the application.