📄 index.jsp
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<%@ page import="function.*" contentType="text/html;charset=gb2312" %>
<%@ page import="function.*" %><%!
static final String sFileName = "Login.jsp";
Common func = new Common();
%>
<%
String sAction = func.getParam( request, "FormAction");
String sForm = func.getParam( request, "FormName");
String sLoginErr = "";
java.sql.Connection conn = null;
java.sql.Statement stat = null;
String sErr = Common.loadDriver();
conn = func.cn();
stat = conn.createStatement();
if ( ! sErr.equals("") ) {
try {
out.println(sErr);
}
catch (Exception e) {}
}
if ( sForm.equals("Login") ) {
sLoginErr = LoginAction(request, response, session, out, sAction, sForm, conn, stat);
if ( "sendRedirect".equals(sLoginErr)) return;
}
%>
<html>
<head>
<title>Book Store</title>
<meta name="GENERATOR" content="YesSoftware CodeCharge v.1.2.0 / JSP.ccp build 05/21/2001"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="expires" content="0"/>
<meta http-equiv="cache-control" content="no-cache"/>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
</head>
<body style="background-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helveticabackground-color: #FFFFFF; color: #000000; font-family: Arial, Tahoma, Verdana, Helvetica">
<jsp:include page="Header.jsp" flush="true"/><center>
<table>
<tr>
<td valign="top">
<% Login_Show(request, response, session, out, sLoginErr, sForm, sAction, conn, stat); %>
</td>
</tr>
</table>
<jsp:include page="Footer.jsp" flush="true"/>
</body>
</html>
<%%>
<%
if ( stat != null ) stat.close();
if ( conn != null ) conn.close();
%>
<%!
String LoginAction(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sAction, String sForm, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException {
String sLoginErr = "";
try {
final int iloginAction = 1;
final int ilogoutAction = 2;
String transitParams = "";
String sQueryString = "";
String sPage = "";
String sSQL = "";
int iAction = 0;
if (sAction.equals("login"))
iAction = iloginAction;
if (sAction.equals("logout"))
iAction = ilogoutAction;
switch (iAction) {
case iloginAction: {
// Login action
String sLogin = func.getParam(request, "Login");
String sPassword = func.getParam(request, "Password");
System.out.println("login:" + sLogin + ",passwd:" + sPassword);
java.sql.ResultSet rs = null;
rs = func.openrs(stat,
"select member_id, member_level from members where member_login ="
+ func.toSQL(sLogin, Common.adText)
+ " and member_password="
+ func.toSQL(sPassword, Common.adText));
if (rs.next()) {
// Login and password passed
session.setAttribute("UserID", rs.getString(1));
session.setAttribute("UserRights", rs.getString(2));
sQueryString = func.getParam(request, "querystring");
sPage = func.getParam(request, "ret_page");
if (!sPage.equals(request.getRequestURI())
&& !"".equals(sPage)) {
try {
if (stat != null)
stat.close();
if (conn != null)
conn.close();
} catch (java.sql.SQLException ignore) {
}
response.sendRedirect(sPage + "?" + sQueryString);
return "sendRedirect";
}
else {
try {
if (stat != null)
stat.close();
if (conn != null)
conn.close();
} catch (java.sql.SQLException ignore) {
}
response.sendRedirect("ShoppingCart.jsp");
return "sendRedirect";
}
} else
sLoginErr = "Login or Password is incorrect.";
rs.close();
break;
}
case ilogoutAction: {
// Logout action
session.setAttribute("UserID", "");
session.setAttribute("UserRights", "");
break;
}
}
} catch (Exception e) {
out.println(e.toString());
}
return (sLoginErr);
}
void Login_Show(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, javax.servlet.http.HttpSession session, javax.servlet.jsp.JspWriter out, String sLoginErr, String sForm, String sAction, java.sql.Connection conn, java.sql.Statement stat) throws java.io.IOException {
try {
String sSQL = "";
String transitParams = "";
String sQueryString = func.getParam(request, "querystring");
String sPage = func.getParam(request, "ret_page");
out.println(" <table style=\"\" border=1>");
out
.println(" <tr>\n <td style=\"background-color: #336699; text-align: Center; border-style: outset; border-width: 1\" colspan=\"2\"><font style=\"font-size: 12pt; color: #FFFFFF; font-weight: bold\">输入用户名和密码</font></td>\n </tr>");
if (sLoginErr.compareTo("") != 0) {
out
.println(" <tr>\n <td colspan=\"2\" style=\"background-color: #FFFFFF; border-width: 1\"><font style=\"font-size: 10pt; color: #000000\">"
+ sLoginErr + "</font></td>\n </tr>");
}
sLoginErr = "";
out.println(" <form action=\"" + sFileName
+ "\" method=\"POST\">");
out
.println(" <input type=\"hidden\" name=\"FormName\" value=\"Login\">");
System.out.println(session.getAttribute("UserID"));
if (session.getAttribute("UserID") == null
|| ((String) session.getAttribute("UserID")).compareTo("") == 0) {
// User did not login
out
.println(" <tr>\n <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">用户名</font></td><td style=\"background-color: #FFFFFF; border-width: 1\"><input type=\"text\" name=\"Login\" maxlength=\"50\" value=\""
+ func.toHTML(func.getParam(request, "Login"))
+ "\"></td>\n </tr>");
out
.println(" <tr>\n <td style=\"background-color: #FFEAC5; border-style: inset; border-width: 0\"><font style=\"font-size: 10pt; color: #000000\">密码</font></td><td style=\"background-color: #FFFFFF; border-width: 1\"><input type=\"password\" name=\"Password\" maxlength=\"50\"></td>\n </tr>");
out
.print(" <tr>\n <td colspan=\"2\"><input type=\"hidden\" name=\"FormAction\" value=\"login\"><input type=\"submit\" value=\"登入\">");
out
.println("<input type=\"hidden\" name=\"ret_page\" value=\""
+ sPage
+ "\"><input type=\"hidden\" name=\"querystring\" value=\""
+ sQueryString
+ "\"></td>\n </form>\n </tr>");
} else {
// User logged in
String sUserID = func.dLookUp(stat, "members", "member_login",
"member_id =" + session.getAttribute("UserID"));
out
.print(" <tr><td style=\"background-color: #FFFFFF; border-width: 1\"><font style=\"font-size: 10pt; color: #000000\">"
+ sUserID
+ " "
+ "</font><input type=\"hidden\" name=\"FormAction\" value=\"logout\"/><input type=\"submit\" value=\"注销\"/>");
out
.print("<input type=\"hidden\" name=\"ret_page\" value=\""
+ sPage
+ "\"><input type=\"hidden\" name=\"querystring\" value=\""
+ sQueryString + "\">");
out.println("</td>\n </form>\n </tr>");
}
out.println(" </table>");
} catch (Exception e) {
out.println(e.toString());
e.printStackTrace();
}
}
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