1、软件介绍：

myeclipse：java编译器

mysql:数据库

servlet：java浏览器服务

navicat：数据库管理工具

2、步骤

（1）软件安装

（2）mysql连接navicat及建库

（4）在myeclipse中建立javaweb项目并完成服务器的配置

3、javaweb项目连接mysql

?（1）mysql驱动安装（官网下载：mysql5.7可以使用5.1驱动）

（2）mysql包引入

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.ResultSet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Driver;
import com.mysql.jdbc.PreparedStatement;

public class demo extends HttpServlet {
	//连接数据库
	private final static String DBU = "jdbc:mysql://localhost:3306/demo";
	private final static String DBUSER = "root";
	private final static String DBUPASS= "123456";
	//初始化sql类
	private static java.sql.Connection coon=null;
	private static java.sql.PreparedStatement pst = null;
	private static ResultSet rs = null;
	
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		try{
			Class.forName("com.mysql.jdbc.Driver");
			coon = DriverManager.getConnection(DBU,DBUSER,DBUPASS);
			System.out.println("连接成功");
			
			//使用mysql语句
			String sql = "select * from demouser";
			pst = coon.prepareStatement(sql);
			rs = pst.executeQuery();
			String name = null;
			String age  = null;
			//遍历数据
			while(rs.next()){
				name = rs.getString("name");
				age = rs.getString("age");
				System.out.println("name"+name+"\t"+"age"+age);
				System.out.println("\n");
			}
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			try {
				rs.close();
				pst.close();
			} catch (Exception e2) {
				e2.printStackTrace();
			}
		}
	
	}

}