我知道如何使用會話cookie將servlet的用戶名和密碼傳遞給servlet,但我很困惑如何存儲成功的註冊,以便當有人註冊時它會根據該數據存儲進行檢查,以確保他們選擇的用戶名具有尚未被使用。如何使用servlet/jsp/javabeans以非常簡單的註冊表格存儲用戶名和密碼?
請記住,這不得不以任何方式安全,它只是要工作。
我有一個表單設置,要求輸入用戶名,密碼並確認密碼設置,並將表單數據傳遞給名爲process的servlet。
對於我的生活,我找不到一個簡單的方法來使這項工作沒有進入更先進的技術,需要數據庫或其他手段。
這裏是我的表單的代碼。任何能夠讓我指向正確方向的東西都會有很大的幫助。謝謝。
package HWpackage;
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;
public class register extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
///* TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet register</title>");
out.println("</head>");
out.println("<body>");
out.println("<form action='process' method='post'>");
out.println("<table border ='5'>" +
"<tr>" +
"<th colspan='2'>Register Account Information</th>" +
"</tr>" +
"<tr>" +
"<td>Requested Username:</td>" +
"<td><input type='text' name='username' /></td>" +
"</tr>" +
"<tr>" +
"<td>Password:</td>" +
"<td><input type='password' name='password' /></td>" +
"</tr>" +
"<tr>" +
"<td>Confirm Password:</td>" +
"<td><input type='password' name='password' /></td>" +
"</tr>" +
"<tr>" +
"<th colspan='2'><input type='Submit' value='Submit'><input type='Reset' value='Reset' /></form></th>" +
"</tr>" +
"</table>");
out.println("</body>");
out.println("</html>");
//*/
} finally {
out.close();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
您需要學習/使用jdbc api。 – adatapost 2011-03-15 04:07:51
從這裏開始:[DAO教程](http://balusc.blogspot.com/2008/07/dao-tutorial-data-layer.html)。它最後提供了一個「註冊用戶」學習示例用例。 – BalusC 2011-03-15 10:56:04