【JSP开源代码栏目提醒】:以下是网学会员为您推荐的JSP开源代码-dbaccess.jsp,希望本篇文章对您学习有所帮助。
<!--首先导入一些必要的packages-->
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<!--告诉编译器使用SQL包-->
<%@ page import="java.sql.*"%>
<!--设置中文输出-->
<%@ page contentType="text/html; charset=GB2312" %>
<html>
<head>
<title>dbaccess.jsp</title>
</head>
<body>
<%
try{
Connection con;
Statement stmt;
ResultSet rs;
//加载驱动程序,下面的代码加载MySQL驱动程序
Class.forName("com.mysql.jdbc.Driver");
//注册MySQL驱动程序
DriverManager.registerDriver(new com.mysql.jdbc.Driver());
//用适当的驱动程序连接到数据库
String dbUrl = "jdbc:mysql://localhost:3306/BookDB?useUnicode=true&characterEncoding=GB2312";
String dbUser="dbuser";
String dbPwd="1234";
//建立数据库连接
con = java.sql.DriverManager.getConnection(dbUrl,dbUser,dbPwd);
//创建一个SQL声明
stmt = con.createStatement();
//增加新记录
stmt.executeUpdate("insert into BOOKS (ID,NAME,TITLE,PRICE) values('999','Tom','Tomcat Bible',44.5)");
//查询记录
rs = stmt.executeQuery("select ID,NAME,TITLE,PRICE from BOOKS");
//输出查询结果
out.println("<table border=1 width=400>");
while (rs.next()){
String col1 = rs.getString(1);
String col2 = rs.getString(2);
String col3 = rs.getString(3);
float col4 = rs.getFloat(4);
//打印所显示的数据
out.println("<tr><td>"+col1+"</td><td>"+col2+"</td><td>"+col3+"</td><td>"+col4+"</td></tr>");
}
out.println("</table>");
//删除新增加的记录
stmt.executeUpdate("delete from BOOKS where ID='999'");
//关闭数据库连接
rs.close();
stmt.close();
con.close();
}catch(Exception e){out.println(e.getMessage());}
%>
</body>
</html>