Who can help me see what the problem is? Thank you!
Register.html:
Copy codeThe Code is as follows:
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">
<Html>
<Head>
<Title> register.html </title>
<Meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<Meta http-equiv = "description" content = "this is my page">
<Meta http-equiv = "content-type" content = "text/html; charset = UTF-8">
<! -- <Link rel = "stylesheet" type = "text/css" href = "./styles.css"> -->
</Head>
<Body>
<Br>
<Form action = "register. jsp" method = "Post" name = "frm">
Username: <input type = "text" name = "in_username"> <br>
Password: <input type = "password" name = "in_password"> <br>
<Input type = "submit" name = "submit" value = "submit">
</Form>
</Body>
</Html>
Register. jsp part:
Copy codeThe Code is as follows:
<% @ Page language = "java" import = java. util. * pageEncoding = "ISO-8859-1" %>
<%
String path = request. getContextPath ();
String basePath = request. getScheme () + ": //" + request. getServerName () + ":" + request. getServerPort () + path + "/";
%>
<! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">
<Html>
<Head>
<Base href = "<% = basePath %>">
<Title> My JSP 'register. jsp 'starting page </title>
<Meta http-equiv = "pragma" content = "no-cache">
<Meta http-equiv = "cache-control" content = "no-cache">
<Meta http-equiv = "expires" content = "0">
<Meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<Meta http-equiv = "description" content = "This is my page">
<Meta http-equiv = "content-type" content = "text/html; charset = gb2312">
<! --
<Link rel = "stylesheet" type = "text/css" href = "styles.css">
-->
</Head>
<Body>
<Br>
<%! Boolean isnotlogin = false; %>
<%
String username = request. getParameter ("username ");
String password = request. getParameter ("password ");
If (username = null | password = null)
{
Response. sendRedirect ("error. jsp ");
Return;
}
%>
<Jsp: useBean id = "person" scope = "page" class = "mypack. register">
<Jsp: setProperty name = "person" property = "username" param = "username"/>
<Jsp: setProperty name = "person" property = "pwd" param = "password"/>
</Jsp: useBean>
<%
Isnotlogin = person. judge ();
If (! Isnotlogin)
{
Response. sendRedirect ("error. jsp ");
Return;
}
Else
{
Session. setAttribute ("username", request. getParameter ("username "));
%>
<Jsp: forward page = "sbmt">
<Jsp: param name = "username" value = "<% = username %>"/>
</Jsp: forward>
<%
}
%>
</Body>
</Html>
Register. java (JavaBean) Section:
Copy codeThe Code is as follows:
Package mypack;
Public class register {
Private String username = "";
Private String pwd = "";
Public void setUserName (String nm)
{
This. username = nm;
}
Public String getUserName ()
{
Return this. username;
}
Public void setPwd (String pd)
{
This. pwd = pd;
}
Public String getPwd ()
{
Return this. pwd;
}
Public boolean judge ()
{
Boolean temp = false;
If (username. equals ("teacher") & pwd. equals ("teacher "))
{
Temp = true;
}
Return temp;
}
}
Sbmt. java (Servlet) Section:
Package mypack;
Import java. io. IOException;
Import java. io. PrintWriter;
Import javax. servlet. ServletException;
Import javax. servlet. http. HttpServlet;
Import javax. servlet. http. HttpServletRequest;
Import javax. servlet. http. HttpServletResponse;
Import javax. servlet. http. HttpSession;
Public class sbmt extends HttpServlet {
Private static final long serialVersionUID = 1L;
Public sbmt (){
Super ();
}
Public void destroy (){
Super. destroy ();
}
Public void doGet (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
Response. setContentType ("text/html ");
PrintWriter out = response. getWriter ();
Out
. Println ("<! Doctype html public \ "-// W3C // dtd html 4.01 Transitional // EN \"> ");
Out. println ("<HTML> ");
Out. println ("<HEAD> <TITLE> A Servlet </TITLE> </HEAD> ");
Out. println ("<BODY> ");
Out. print ("This is ");
Out. print (this. getClass ());
Out. println (", using the GET method ");
Out. println ("</BODY> ");
Out. println ("</HTML> ");
Out. flush ();
Out. close ();
}
Public void doPost (HttpServletRequest request, HttpServletResponse response)
Throws ServletException, IOException {
HttpSession session = request. getSession (false );
If (session = null)
{
Response. sendRedirect ("error. jsp ");
Return;
}
String usernameone = (String) session. getAttribute ("username ");
String usernametwo = request. getParameter ("username ");
If (! Usernameone. equals (usernametwo ))
{
Response. sendRedirect ("error. jsp ");
Return;
}
Response. setContentType ("text/html; charset = GBK ");
Request. setAttribute ("username", usernametwo );
If (usernametwo. equals ("teacher "))
{
Response. sendRedirect ("teacher. jsp ");
Return;
}
Else
{
Response. sendRedirect ("error. jsp ");
Return;
}
}
}
}
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