📄 mainservlet.java
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package news.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import news_bean.reporter;
public class mainServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public mainServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
response.setCharacterEncoding("GB2312");//��4�����ַ�
String name = request.getParameter("username");
String password = request.getParameter("password");
PrintWriter out = response.getWriter();
reporter r = new reporter();
if( name.equals("") || name == null || password.equals("") || password == null)
{
out.println("<%@ page language='java' import='java.util.*' pageEncoding='Gb2312'%>");
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>error</TITLE></HEAD>");
out.println(" <BODY>");
out.println(" <center>");
out.println(" <br bglolor='#006699'>");
out.println("<a href='left.jsp'>用户名和密码不能为空.请返回</a>");
out.println("</center>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
else if((name.equals("key")||name=="key")&&(password.equals("key")||password=="key"))
{
out.println("<%@ page language='java' import='java.util.*' pageEncoding='GB2312'%>");
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>error</TITLE></HEAD>");
out.println(" <BODY bgcolor='#006699'>");
out.println(" <center>");
out.println("<a href='guanliyuan/admin.html' target='_blank'>进入管理员界面!</a>");
out.println("</center>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
//out.println("<a href='guanliyuan/admin.html' target='_blank'><script language='javascript'>alert('进入管理员界面')</script></a>");
//response.sendRedirect("guanliyuan/admin.html");
//request.getRequestDispatcher("/admin/admin.html").forward(request,response);
}
else
{
r.setJ_name(name);
r.setPassword(password);
boolean b = r.login();
if(b)
{
request.setAttribute("newreporter",r);
request.getRequestDispatcher("/jizhe.jsp").forward(request,response);
//request.getRequestDispatcher("/jizhe.jsp").forward(request,response);
}
else{
response.sendRedirect("/news/left.jsp");
}
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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