JSP | Use pure JAVA driver to connect to MySQL database

The integrated development environment adopted by this program is eclipse.

The database used is the MySQL database integrated in JspStudy.

The java connection driver for MySQL is in the Tomcat -> lib folder under the installation directory of jspstudy:

If jspstudy is not installed, mysql java driver can be downloaded from the official website: https://dev.mysql.com/downloads/connector/

When this program uses eclipse to lay out the web project, this driver needs to be arranged inwebcontent——>WEB-INF——>libUnder contents.

This is the users table under the database text for testing in the mysql database, and then connect it to the test.

test program:

<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%>
<%@ page import="java.sql.*"%>
<html>
<head>
<title>useMySQL.jsp</title>
</head>
<body bgcolor="lightblue">
	<%
		Connection con = null;
		Statement st = null;
		ResultSet rs = null;
		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
		try {
			con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");
			st=con.createStatement();
			rs=st.executeQuery("select * from users");
			out.print("<table border=1>");
			out.print("<tr>");
				out.print("<th>id</th>");
				out.print("<th>username</th>");
				out.print("<th>password</th>");
				out.print("<th>name</th>");
			out.print("</tr>");
			while(rs.next()){
				out.print("<tr>");
					out.print("<td>"+rs.getString(1)+"</td>");
					out.print("<td>"+rs.getString(2)+"</td>");
					out.print("<td>"+rs.getString(3)+"</td>");
					out.print("<td>"+rs.getString(4)+"</td>");
				out.print("</tr>");
			}
			out.print("</table>");
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			try{
				if(rs!=null){
					rs.close();
				}
				if(st!=null){
					st.close();
				}
				if(con!=null){
					con.close();
				}
			}catch (SQLException e) {
				e.printStackTrace();
			}
		}
	%>
</body>
</html>

The test results are as follows:

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