Home > Developer > ASP

MVC step-by-step (LOGIN implemented by jsp model1)

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

1,EclipseMenuFile-> New-> Others ..SelectJava-> tomcat (a good JSP running platform) ProjectEnter the project name

Webapp.

2, UseJsp (preferred for SUN Enterprise applications)Model1Achieve User Login

(1),EclipseMenuFile-> New-> FolderFolder nameModel1

(2), NewJsp (preferred for SUN Enterprise applications)File

Webappmodel1 login. jsp (preferred for SUN Enterprise applications)

Webappmodel1 succeed. jsp (preferred for SUN Enterprise applications)

 (3),Login. jsp (preferred for SUN Enterprise applications)
**************************************** **************************************
<% @ Page language = "java" pageEncoding = "GB2312" %>
<! Doctype html public "-// w3c // dtd html 4.0 transitional // en">
<Html>
<Head>
<Title> login </title>
</Head>
<%
Boolean isSucceed = false;
String msg = "";
String username = request. getParameter ("username ");
String password = request. getParameter ("password ");
If (username! = Null ){
System. out. println ("Login processing started .........");
Username = username. trim ();
Password = password. trim ();
If (username. equals ("") & username. equals ("")){
IsSucceed = false;
Msg = "the user name or password is blank ";
} Else {
IsSucceed = true;
}
If (isSucceed ){
If (username. equals ("zkjbeyond") & password. equals ("zkjbeyond ")){
IsSucceed = true;
Session. setAttribute ("username", username );
Msg = "Login successful ";
Response. sendRedirect ("succeed. jsp (preferred for SUN Enterprise Applications )");
} Else {
IsSucceed = false;
Msg = "incorrect user name and password ";
}
}
}
System. out. println (msg );
System. out. println ("the login process is completed .........");
%>
<Body bgcolor = "# FFFFFF">
<Form action = "login. jsp (preferred for SUN Enterprise Applications)" method = "post">
<Div>
<Span style = "width: 70;"> User name: </span>
<Span> <input type = "text" name = "username"> </span>
</Div>
<Div>
<Span style = "width: 70;"> password: </span>
<Span> <input type = "password" name = "password"> </span>
</Div>
<Div>
<Span style = "width: 70;"> </span>
<Span> <input type = "submit"> </span>
</Div>
<Div style = "color: red;">
<%
If (! IsSucceed)
Out. println (msg );
%>
</Div>
</Form>
</Body>
</Html>
**************************************** **************************************** ******
Succeed. jsp (preferred for SUN Enterprise applications)
<% @ Page language = "java" pageEncoding = "GB2312" %>
<! Doctype html public "-// w3c // dtd html 4.0 transitional // en">
<Html>
<Head>
<Title> succeed </title>
</Head>
<Body bgcolor = "# FFFFFF">
<%

Object username = session. getAttribute ("username ");
If (username! = Null)
Out. println ("username:" + username );
Else
Response. sendRedirect ("login. jsp (preferred for SUN Enterprise Applications )");
%>
</Body>
</Html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More