📄 loginservlet.java
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package password;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
/**
* <p>Title: 项目实战 Stage2</p>
*
* <p>Description: ACCP 4.0</p>
*
* <p>Copyright: Copyright (c) 2005</p>
*
* <p>Company: jb-aptech.com.cn</p>
*
* @author Dong Ping
* @version 1.0
*/
public class LoginServlet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>LoginServlet</title></head>");
out.println("<body bgcolor=\"#00b46e\">");
out.println("<h1>欢迎使用本系统！</h1>");
String username = request.getParameter("username");
String passwd = request.getParameter("password");
if ((username != null) && !(username.equals(""))
&& (passwd != null) && !(passwd.equals(""))) {
try {
UserManager um = new UserManager();
boolean login = um.login(username, passwd);
if (login) {
ServletContext context = getServletContext();
RequestDispatcher requestDisp = null;
requestDisp = context.getRequestDispatcher(
"/showactionmessage");
requestDisp.forward(request, response);
}
out.println("不存在的用户或密码!");
} catch (SystemException se) {
out.println("系统错误，请与系统管理员联系!");
}
}
out.println(
"<form action=\"/LoginManage/loginservlet\" method=\"post\">");
out.println("<p>用户名: <input type='text' name='username' /></p>");
out.println("<p>密 码: <input type='text' name='password' /></p>");
out.println("<p><input type=submit value='登录' /></p>");
out.println("<a href=\"/LoginManage/mailpasswordservlet\">找回密码</a></p>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
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