连接数据库
1.下载sqljdbc.jar的压缩包，解压之后，将sqljdbc4.jar复制粘贴到你项目的WEB-INF的lib目录下
2如图所示 右击
3 在navicat中新建数据库.
4在eclipse中新建一个 NewFile.jsp
<%@ page language=java contentType=text/html; charset=UTF-8
pageEncoding=UTF-8%>
<%@page import=java.sql.*%>
<!DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/loose.dtd>
<html>
<head>
<meta http-equiv=Content-Type content=text/html; charset=UTF-8>
<title>测试</title>
</head>
<body>
<%
try{
Class.forName(com.mysql.jdbc.Driver);
String url = jdbc:mysql://localhost:3306/javaweb;
String username = root;
String password = 1234;
Connection conn = DriverManager.getConnection(url,username,password);
out.print(数据库连接成功！);
conn.close();
}
catch(Exception e){
out.print(数据库连接失败！);
out.print(错误信息：+e.toString());
}
%>
</body>
</html>
5连接成功
