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:\Tomcat\lib
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>