下载地址：http://dev.mysql.com/downloads/connector/j/
安装mysql-connector-java-5.1.38.zip：
1.解压文件-》把里面的mysql-connector-java-5.1.38-bin.jar文件复制到-》E:Tomcatlib
2.右键Web工程-》properties-》Libraries-》Add External JARs-》mysql-connector-java-5.1.38-bin.jar添加进来-》finish
检查安装是否成功：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <%@ page import="java.sql.*" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'testconnection.jsp' starting page</title> </head> <body> <% //student为数据库名字，加上useSSL=true不然报错 String url="jdbc:mysql://localhost:3306/student?useSSL=true"; String useName="root"; String password="2277092"; Connection conn=null; try{ Class.forName("com.mysql.jdbc.Driver"); } catch(ClassNotFoundException e){ out.print("加载驱动器类出现异常"); } try{ conn=null; conn=DriverManager.getConnection(url,useName,password); } catch(SQLException e){ out.print("连接数据库的过程中出现SQL异常"); } if(conn==null){ out.print("连接数据库失败"); } else{ out.print("连接数据库成功"); } try{ conn.close(); } catch(SQLException e){ out.print("关闭数据库连接时出现SQL异常"); } %> </body> </html>