adduserservlet.java

jsp + servlete + jdbc开的管理系统

package hbu.david.cmc.servlet;

import hbu.david.cmc.bean.*;
import hbu.david.cmc.http.ServletEncoding;
import hbu.david.cmc.util.*;
import hbu.david.cmc.work.*;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class for Servlet: AddUserServlet
 *
 */
 public class AddUserServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
   static final long serialVersionUID = 1L;
   
    /* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	public AddUserServlet() {
		super();
	}   	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doPost(request,response);
	}  	
	
	/* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		ServletEncoding.setEncoding(request, response);
		String username=request.getParameter("username");
		String password=request.getParameter("password");
		String nickName=request.getParameter("nickName");
		response.getWriter().print("error!");
		if(StringUtil.isStringEmpty(username)||StringUtil.isStringEmpty(password)||StringUtil.isStringEmpty(nickName)){
			request.setAttribute("errorMessage", "不允许添加空数据！");
			request.setAttribute("returnUrl", "addUser.jsp");
			request.getRequestDispatcher("error.jsp").forward(request, response);
		}else{
			UserInfo userInfo=new UserInfo();
			userInfo.setNickName(nickName);
			userInfo.setPassword(password);
			userInfo.setUsername(username);
			userInfo=UserBean.addUser(userInfo);
			if(userInfo==null){
				
				request.setAttribute("errorMessage", "注册失败！");
				request.setAttribute("returnUrl", "addUser.jsp");
				request.getRequestDispatcher("error.jsp").forward(request, response);
			}else{
				RequestDispatcher requestDispatcher=request.getRequestDispatcher("LoginServlet?username="+username+"&&password="+password);
				requestDispatcher.forward(request, response);
			}
		}
	}   	  	    
}