留言板jsp+ban+servlert.doc

/*留言板servlert */*login.jsp*/ 用户名：口 令：/*DoLogin.java*/package 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 javax.servlet.http.HttpSession;public class DoLogin extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException String userName=request.getParameter(username);/获取用户名HttpSession session = request.getSession();session.setAttribute(name,userName); /用户名写入session，显示留言时(showMessage.jsp)需要String passWord=request.getParameter(password);/获取口令if(userName.equals(admin)&passWord.equals(123) /用户名和密码正确 response.sendRedirect(messageBoard.jsp); /重定向到留言页面else response.sendError(500,登陆错误，用户名或密码不正确！);/*messageBoard.jsp*/留言标题：留言内容：/* DoMessage.java */package Servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class DoMessage extends HttpServlet public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException bean.valuebean.Message message=new bean.valuebean.Message();/*以上产生javabean实例message*/*以下javabean设置数据使用方法 */message.setTitle(request.getParameter(title);/保存留言标题message.setContent(request.getParameter(content);/保存留言内容request.setAttribute(msg, message);/将对象message保存到request中/下面2行实现转发到showMessage.jspRequestDispatcher dispatcher=request.getRequestDispatcher(showMessage.jsp);dispatcher.forward(request, response);/* bean.valuebean. Message 存储留言的javaBean */package bean.valuebean;public class Message private String title;/存储留言标题private String content;/存储留言内容public String getTitle() return title;public void setTitle(String title) this.title = title;public String getContent() return content;public void setContent(String content) this.content = content;/* showMessage.jsp */显示留言信息留言者：留言标题：留言内容：/* bean.toolbean. MyTools */package