软件工程概论之web基础

Posted 2020-10-15 夏延

tags:

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网站系统开发需要的技术

lJava语言

l面向对象分析设计思想

l设计模式和框架结构

lXML语言

l网页脚本语言

l数据库

l应用服务器

l集成开发环境

课堂测试源码

<%@ page contentType = "text/html; charset=utf-8" import = "java.sql.*" %>

<html>

<head>

<%
String id = request.getParameter("id");

session.setAttribute("id",id);

String userpassword = request.getParameter("userpassword");
if(id.equals("admin")&&userpassword.equals("admin"))
{
out.println("<script language = \'javaScript\'> alert(\'登陆成功！欢迎管理员\');</script>");
response.setHeader("refresh","1;url = manage.jsp");
}
else{
String url = "jdbc:sqlserver://localhost:1433;DatabaseName=web;";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

Connection connect = DriverManager.getConnection(url, "sa", "20163488");//登录JDBC链接数据库

Statement stmt = connect.createStatement();//从数据库里面取东西对比

String sql = "select * from users where id=\'"+id+"\'and password=\'"+userpassword+"\'";
ResultSet i = stmt.executeQuery(sql);
if(i.next())

{

out.println("<script language = \'javaScript\'> alert(\'登陆成功！\');</script>");
response.setHeader("refresh","1;url = per_page.jsp");

}
else
{
out.println("<script language = \'javaScript\'> alert(\'输入错误，请重新输入用户名！\');</script>");

response.setHeader("refresh","1;url = login.html");

}

stmt.close();

connect.close();

}
%>

</div>