registerServlet
package com.kjschool.javaweb.servlet; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.IOException; @WebServlet(name = "registerServlet") public class registerServlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); String username=request.getParameter("username"); String password=request.getParameter("password"); String realname= new String(request.getParameter("realname").getBytes("iso8859-1"),"UTF-8"); String name= new String(request.getParameter("name").getBytes("iso8859-1"),"UTF-8"); String brith=request.getParameter("brith"); int count=t_userDao.insertuser(username,password,realname); t_userDao.insert(name,brith); if (count==1){ HttpSession session=request.getSession(); session.setAttribute("realname",realname); response.sendRedirect(request.getContextPath() + "/firstpage.jsp"); } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } }
t_userDao.insertuser()
public static int insertuser(String username, String password,String realname) { Connection conn = null; PreparedStatement ps = null; int count = 0; try { //获取连接 conn = DBUtils.getConnection(); //获取预编译的数据库操作对象 String sql = "insert into t_users (login_name,login_pwd,real_name) values (?,?,?)"; ps = conn.prepareStatement(sql); //传值 ps.setString(1, username); ps.setString(2, password); ps.setString(3,realname); count = ps.executeUpdate(); } catch (SQLException throwables) { throwables.printStackTrace(); } finally { DBUtils.close(conn, ps, null); } return count; }
DBUtils
package com.kjschool.javaweb.servlet; import java.sql.*; import java.util.ResourceBundle; public class DBUtils { private DBUtils(){ } //类加载时绑定资源属性文件 private static ResourceBundle bundle=ResourceBundle.getBundle("resources.db"); //注册驱动 static{ try { Class.forName(bundle.getString("driver")); } catch (ClassNotFoundException e) { e.printStackTrace(); } } //获取数据库连接对象 public static Connection getConnection() throws SQLException { String url=bundle.getString("url"); String user=bundle.getString("user"); String password=bundle.getString("password"); Connection conn= DriverManager.getConnection(url,user,password); return conn; } //释放资源 public static void close(Connection conn, Statement stmt, ResultSet rs){ if (rs != null) { try { rs.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } if (stmt != null) { try { stmt.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException throwables) { throwables.printStackTrace(); } } } }
register.jsp
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> span{ font-size: 15px; color: #ff0000; } </style> </head> <body> <script type="text/javascript"> window.onload=function(){ var namespan=document.getElementById("namespan"); var usernameElt=document.getElementById("username"); usernameElt.onblur=function(){ var username=usernameElt.value; username=username.trim(); if (username=="") { namespan.innerHTML="用户名不能为空"; } else{ if (username.length<6||username.length>12) { namespan.innerHTML="用户名在[6,12]之间" }else{ var regExp=/^[a-zA-Z0-9]+$/ var ok=regExp.test(username) if (!ok) { namespan.innerHTML="用户名只能由字母和数字组成" } } } } usernameElt.onfocus=function(){ namespan.innerHTML="" } var passspan=document.getElementById("passspan"); var passwordelt=document.getElementById("secondpassword"); passwordelt.onblur=function(){ var password=document.getElementById("password").value; var secondpassword=passwordelt.value; password=password.trim(); secondpassword=secondpassword.trim(); /*if (secondpassword=="") { passspan.innerHTML="确认密码不能为空"; }else{*/ if (password==""||secondpassword=="") { passspan.innerHTML="密码不能为空"; }else{ if (password!=secondpassword) { passspan.innerHTML="两次密码不一致"; } } /*}*/ } passwordelt.onfocus=function(){ passspan.innerHTML=""; } document.getElementById("zhuce").onclick=function(){ usernameElt.focus(); usernameElt.blur(); document.getElementById("secondpassword").focus(); document.getElementById("secondpassword").blur(); if (namespan.innerHTML==""&& passspan.innerHTML=="") { var formobj=document.getElementById("userform") formobj.submit(); } } } </script> <form action="register" id="userform" method="post"> 用户名：<input type="text" name="username" id="username" /><span id="namespan"> </span><br /> 密码： <input type="password" name="password" id="password" /></span><br /> 确认密码： <input type="password" id="secondpassword" /><span id="passspan"></span><br /> 昵称：<input type="text" id="realname" name="realname"><br> 姓名：<input type="text" name="name"><br> 生日：<input type="text" name="brith"><br> <input type="button" name="zhuce" id="zhuce" value="注册" /> <input type="reset" value="重置"> </form> </body> </html>
OneFilter
ackage com.kjschool.javaweb.servlet; import com.sun.deploy.net.HttpRequest; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import java.io.IOException; import java.util.logging.LogRecord; public class OneFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request= (HttpServletRequest) servletRequest; HttpSession session=null; //获取uri String uri=request.getRequestURI(); if ("login".indexOf(uri)!=-1||"/examination_war_exploded/".equals(uri)) { filterChain.doFilter(servletRequest,servletResponse); return; } session = request.getSession(false); if(session!=null){ filterChain.doFilter(servletRequest,servletResponse); }else { request.getRequestDispatcher("/loginerror.jsp").forward(servletRequest,servletResponse); } } @Override public void destroy() { } }
