关于JSP的一点疑问小结
希望谁能帮我看一看问题出在哪?谢谢! register.html部分: 复制代码 代码如下: register.html
register.jsp部分: 复制代码 代码如下:<%@ page language="java" import = java.util.* pageEncoding="ISO-8859-1"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> My JSP 'register.jsp' starting page
<%! boolean isnotlogin = false;%> <% String username = request.getParameter("username"); String password = request.getParameter("password"); if(username == null || password == null) { response.sendRedirect("error.jsp"); return; } %> <% isnotlogin = person.judge(); if(!isnotlogin) { response.sendRedirect("error.jsp"); return; } else { session.setAttribute("username", request.getParameter("username")); %> <% } %> register.java(JavaBean)部分: 复制代码 代码如下:package mypack; public class register { private String username = ""; private String pwd = ""; public void setUserName(String nm) { this.username = nm; } public String getUserName() { return this.username; } public void setPwd(String pd) { this.pwd = pd; } public String getPwd() { return this.pwd; } public boolean judge() { boolean temp = false; if(username.equals("teacher") && pwd.equals("teacher")) { temp = true; } return temp; } } sbmt.java(Servlet)部分: package mypack; 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; public class sbmt extends HttpServlet { private static final long serialVersionUID = 1L; public sbmt() { super(); } public void destroy() { super.destroy(); } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out .println(""); out.println(""); out.println(" A Servlet"); out.println(" "); out.print(" This is "); out.print(this.getClass()); out.println(", using the GET method"); out.println(" "); out.println(""); out.flush(); out.close(); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(false); if(session == null) { response.sendRedirect("error.jsp"); return; } String usernameone = (String)session.getAttribute("username"); String usernametwo = request.getParameter("username"); if(!usernameone.equals(usernametwo)) { response.sendRedirect("error.jsp"); return; } response.setContentType("text/html;charset = GBK"); request.setAttribute("username", usernametwo); if(usernametwo.equals("teacher")) { response.sendRedirect("teacher.jsp"); return; } else { response.sendRedirect("error.jsp"); return; } } } }