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  • 新闻发布项目——Servlet类(doRegServlet )

    package bdqn.newsManageServlet.Servlet;
    
    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 bdqn.newsManageServlet.Dao.UserDao;
    import bdqn.newsManageServlet.Dao.Impl.UserDaoImpl;
    import bdqn.newsManageServlet.entity.User;
    
    public class doRegServlet extends HttpServlet {
    
    	/**
    	 * 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;charset=utf-8");
    		PrintWriter out = response.getWriter();
    		request.setCharacterEncoding("utf-8");
    		//获取注册用户信息
    		request.setCharacterEncoding("utf-8");
    		String name=request.getParameter("userName");
    		String pwd=request.getParameter("password");
    		if(name==null||name.equals("")){
    		//保存错误信息
    			request.setAttribute("uerrmsg","用户名不能为空" );
    			request.getRequestDispatcher("reg.jsp").forward(request, response);
    			return;
    		}else if(pwd==null||pwd.equals("")){
    			//保存错误信息
    			request.setAttribute("pwderrmsg","密码不能为空" );
    			request.getRequestDispatcher("reg.jsp").forward(request, response);
    			return;
    		}else{
    		//将用户信息添加到数据库中
    			UserDao udao=new UserDaoImpl();
    			User user=new User();
    			user.setUserName(name);
    			user.setUserPassword(pwd);
    			int rel=udao.addUser(user);
    			if(rel>0){
    				out.print("<script>alert('注册成功!');location.href='./index.jsp';</script>");
    			}else{
    				out.print("<script>alert('注册失败!');location.href='./reg.jsp';</script>");
    			}
    		}
    	}
    
    	
    	public void doPost(HttpServletRequest request, HttpServletResponse response)
    			throws ServletException, IOException {
    		doGet(request, response);
    	}
    
    	/**
    	 * Initialization of the servlet. <br>
    	 *
    	 * @throws ServletException if an error occurs
    	 */
    	public void init() throws ServletException {
    		// Put your code here
    	}
    
    }
    

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  • 原文地址:https://www.cnblogs.com/a1111/p/6540300.html
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