📄 login_jsp.java
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package org.apache.jsp;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;
import javax.swing.*;
public final class login_jsp extends org.apache.jasper.runtime.HttpJspBase
implements org.apache.jasper.runtime.JspSourceDependent {
private static java.util.Vector _jspx_dependants;
public java.util.List getDependants() {
return _jspx_dependants;
}
public void _jspService(HttpServletRequest request, HttpServletResponse response)
throws java.io.IOException, ServletException {
JspFactory _jspxFactory = null;
PageContext pageContext = null;
HttpSession session = null;
ServletContext application = null;
ServletConfig config = null;
JspWriter out = null;
Object page = this;
JspWriter _jspx_out = null;
PageContext _jspx_page_context = null;
try {
_jspxFactory = JspFactory.getDefaultFactory();
response.setContentType("text/html; charset=gb2312");
pageContext = _jspxFactory.getPageContext(this, request, response,
"", true, 8192, true);
_jspx_page_context = pageContext;
application = pageContext.getServletContext();
config = pageContext.getServletConfig();
session = pageContext.getSession();
out = pageContext.getOut();
_jspx_out = out;
out.write("\r\n");
out.write("\r\n");
String Username=request.getParameter("Username");
String Password=request.getParameter("Password");
String input= request.getParameter("rand");
if (Username!=null && Password!=null)
{
//把用户名和密码保存在session中
session.setAttribute("user_name",Username);
session.setAttribute("pass_word",Password);
session.setAttribute("input",input);
//验证用户输入的验证码是否正确
if (input.equals(session.getAttribute("rand")))
{
//如果正确就跳转到check.jsp验证用户名密码
response.sendRedirect("check.jsp");
}
else
{
//验证码不正确
out.print("验证码错误");
//JOptionPane.showMessageDialog(null,"请选择文件！","提示",JOptionPane.ERROR_MESSAGE);
}
}
out.write("\r\n");
out.write("\r\n");
out.write("\r\n");
out.write("<script type=\"text/javascript\">\r\n");
out.write("function check()\r\n");
out.write("{\r\n");
out.write(" if (form.Username.value==\"\")\r\n");
out.write(" {\r\n");
out.write(" alert(\"请输入用户名!!!\");\r\n");
out.write(" form.Username.focus();\r\n");
out.write(" return false;\r\n");
out.write(" }\r\n");
out.write(" if (form.Password.value==\"\")\r\n");
out.write(" {\r\n");
out.write(" alert(\"请输入密码!!!\");\r\n");
out.write(" form.Username.focus();\r\n");
out.write(" return false;\r\n");
out.write(" }\r\n");
out.write("}\r\n");
out.write("</SCRIPT>\r\n");
out.write("\r\n");
out.write("<html>\r\n");
out.write("<HEAD>\r\n");
out.write(" <title>用户登陆</title>\r\n");
out.write("</HEAD>\r\n");
out.write("<BODY>\r\n");
out.write("<form name=\"form\" onsubmit=\"return check()\" action=\"login.jsp\" method=\"post\">\r\n");
out.write("<TABLE width=265 align=center border=0>\r\n");
out.write(" <TBODY>\r\n");
out.write(" <TR align=center valign=\"middle\">\r\n");
out.write(" <TD colspan=\"2\">\r\n");
out.write(" <STRONG>登录</STRONG>\r\n");
out.write(" </TD>\r\n");
out.write(" </TR>\r\n");
out.write("\r\n");
out.write(" <tr>\r\n");
out.write(" <td height=\"54\" align=\"center\">用户名：</td>\r\n");
out.write(" <td width=\"181\" height=54>\r\n");
out.write(" <input id=Username name=Username>\r\n");
out.write(" </TD>\r\n");
out.write(" </TR>\r\n");
out.write("\r\n");
out.write(" <tr>\r\n");
out.write(" <td height=\"54\" align=\"center\">密码：</td>\r\n");
out.write(" <td width=\"181\" height=54>\r\n");
out.write(" <input id=Password type=Password name=Password>\r\n");
out.write(" </TD>\r\n");
out.write(" </TR>\r\n");
out.write("\r\n");
out.write(" <tr>\r\n");
out.write(" <td align=\"center\">认证码：</td>\r\n");
out.write(" <td>\r\n");
out.write(" <img border=1 src=\"image.jsp\" alt=\"3\">\r\n");
out.write(" </td>\r\n");
out.write(" </tr>\r\n");
out.write("\r\n");
out.write(" <tr>\r\n");
out.write(" <td height=\"54\" align=\"center\">认证码：</td>\r\n");
out.write(" <td width=\"181\" height=54>\r\n");
out.write(" <input type=text name=rand maxlength=4 value=\"\">\r\n");
out.write(" </td>\r\n");
out.write(" </tr>\r\n");
out.write(" <TR>\r\n");
out.write("\r\n");
out.write(" <TD colspan=\"2\" align=center>\r\n");
out.write(" <INPUT type=submit value=登陆>\r\n");
out.write(" <INPUT type=reset value=重置>\r\n");
out.write(" </TD>\r\n");
out.write(" </TR>\r\n");
out.write(" </TBODY>\r\n");
out.write("</TABLE>\r\n");
out.write("</FORM>\r\n");
out.write("</BODY>\r\n");
out.write("</HTML>\r\n");
} catch (Throwable t) {
if (!(t instanceof SkipPageException)){
out = _jspx_out;
if (out != null && out.getBufferSize() != 0)
out.clearBuffer();
if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
}
} finally {
if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
}
}
}
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