?? mainservlet.java
字號:
package com.middle.graduate.servlet.student;
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;
import com.middle.graduate.biz.dao.DBStudentDao;
import com.middle.graduate.biz.dao.impl.DBStudentImpl;
import com.middle.graduate.biz.exce.DataException;
public class MainServlet extends HttpServlet {
private DBStudentDao dao = new DBStudentImpl();
private static final long serialVersionUID = 3595479503113312758L;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("gbk");
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
int studentId = Integer.parseInt(request.getParameter("studentId"));
String password = request.getParameter("password");
try {
boolean bool = dao.login(studentId, password);
if(bool == true) {
HttpSession session = request.getSession(true);
session.setAttribute("studentId", new Integer(studentId));
out.println("<html>");
out.println("<head>");
out.println("<title>");
out.println("學生");
out.println("</title>");
out.println("</head>");
out.println("<body bgcolor = \"green\">");
out.println("<table height = \"20%\">");
out.println("<tr><td></td></tr>");
out.println("</table>");
out.println("<table align = \"center\" width = \"50%\" height = \"50%\" cellspacing = \"10%\" cellpadding = \"10\">");
out.println("<form method = \"post\" action = \"/jsp-graduate/student/urlframe\"");
out.println("<tr><td align = \"center\">查詢所有課題:</td><td><input type = \"submit\" name = \"query_all_topic\" value = \"query_all_topic\"/></td></tr>");
out.println("<tr><td align = \"center\">查詢已選課題:</td><td><input type = \"submit\" name = \"query_selected_topic\" value = \"query_selected_topic\"/></td></tr>");
out.println("<tr><td></td></tr><tr><td></td></tr>");
out.println("<tr align = \"left\">");
out.println("<td align = \"center\">修改密碼:</td><td><input type = \"submit\" name = \"change_password\" value = \"change_password\"/></td>");
out.println("</tr>");
out.println("<tr><td></td></tr><tr><td></td></tr><tr><td></td></tr><tr><td></td></tr><tr><td></td></tr><tr><td></td></tr>");
out.println("<tr align = \"right\">");
out.println("<td colspan = \"3\">退出系統:</td><td align = \"left\"><input type = \"submit\" name = \"quit\" value = \"quit\"/></td>");
out.println("</tr>");
out.println("</form>");
out.println("</table>");
out.println("</body>");
out.println("</html>");
} else {
out.println("<html>");
out.println("<head>");
out.println("<title>");
out.println("</title>");
out.println("</head>");
out.println("<body>");
out.println("<form method = \"get\" action = \"/jsp-graduate/login/studentlogin.html\">");
out.println("<center><h3>你的卡號,密碼不對應!</h3></center>");
out.println("<center><h3>從新登陸點擊:<input type = \"submit\" value = \"relogin\"></h3></center>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
}
} catch (DataException e) {
e.printStackTrace();
}
}
}
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