📄 login_manageservlet_1.java

📁 一个完整的代码管理系统的源代码
💻 JAVA
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package hunnu.edu.cn.product.servlet;

import hunnu.edu.cn.product.common.db.dao.implement.DaoFactory;
import hunnu.edu.cn.product.common.db.model.TB_USER_MST;

import java.io.IOException;
import java.io.PrintWriter;

import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class Login_ManageServlet_1 extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Constructor of the object.
	 */
	public Login_ManageServlet_1() {
		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 {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the GET method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * 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");
	
	//PrintWriter out = response.getWriter(); 
		String name=request.getParameter("userlogin");
        String password=request.getParameter("password");
        List<TB_USER_MST> users = null;
		DaoFactory factory=DaoFactory.newInstance();
		
    if((users=factory.newTB_USER_MSTDao().getByName(name)).size()>0)
	    {
    	
    	if(users.get(0).getUser_password().equals(password)){
	    	HttpSession session=request.getSession(true);
 	        
 	        response.sendRedirect("SelectPages.jsp");
 	       session.setAttribute("user_name",name); 
	        }else
	        	//out.print("密码不正确！请重新输入");
	           response.sendRedirect("error.jsp");
	    }
    else{
    	
		
    	response.sendRedirect("error.jsp");
		
		
	}
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
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