package cn.itcast.action; import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.IOException; import java.util.Random; import javax.imageio.ImageIO; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * 验证码 * @author Administrator * */ public class CheckcodeServlet extends HttpServlet { private static final long serialVersionUID = -1954096202081365387L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 在内存中生成图片(纸),没有设置背景颜色,画填充的矩形,并且和纸的大小相同,矩形有颜色。 * 获取笔的对象(设置颜色,设置字体,画字符串,画矩形) * 先准备好数据,随机生成4个字符,把字符画到纸上 * 画干扰线 * 把内存中的图片输出到客户端上 */ int width = 120; int height = 30; // 在内存中生成图片 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); // 先获取画笔对象 Graphics2D g = (Graphics2D) image.getGraphics(); // 设置灰色 g.setColor(Color.GRAY); // 画填充的矩形 g.fillRect(0, 0, width, height); // 设置颜色 g.setColor(Color.BLUE); // 画边框 g.drawRect(0, 0, width-1, height-1); // 准备数据,随机获取4个字符 // String words = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890"; String words = "\u7684\u4e00\u4e86\u662f\u6211\u4e0d\u5728\u4eba\u4eec\u6709\u6765\u4ed6\u8fd9\u4e0a\u7740\u4e2a\u5730\u5230\u5927\u91cc\u8bf4\u5c31\u53bb\u5b50\u5f97\u4e5f\u548c\u90a3\u8981\u4e0b\u770b\u5929\u65f6\u8fc7\u51fa\u5c0f\u4e48\u8d77\u4f60\u90fd\u628a\u597d\u8fd8\u591a\u6ca1\u4e3a\u53c8\u53ef\u5bb6\u5b66\u53ea\u4ee5\u4e3b\u4f1a\u6837\u5e74\u60f3\u751f\u540c\u8001\u4e2d\u5341\u4ece\u81ea\u9762\u524d\u5934\u9053\u5b83\u540e\u7136\u8d70\u5f88\u50cf\u89c1\u4e24\u7528\u5979\u56fd\u52a8\u8fdb\u6210\u56de\u4ec0\u8fb9\u4f5c\u5bf9\u5f00\u800c\u5df1\u4e9b\u73b0\u5c71\u6c11\u5019\u7ecf\u53d1\u5de5\u5411\u4e8b\u547d\u7ed9\u957f\u6c34\u51e0\u4e49\u4e09\u58f0\u4e8e\u9ad8\u624b\u77e5\u7406\u773c\u5fd7\u70b9\u5fc3\u6218\u4e8c\u95ee\u4f46\u8eab\u65b9\u5b9e\u5403\u505a\u53eb\u5f53\u4f4f\u542c\u9769\u6253\u5462\u771f\u5168\u624d\u56db\u5df2\u6240\u654c\u4e4b\u6700\u5149\u4ea7\u60c5\u8def\u5206\u603b\u6761\u767d\u8bdd\u4e1c\u5e2d\u6b21\u4eb2\u5982\u88ab\u82b1\u53e3\u653e\u513f\u5e38\u6c14\u4e94\u7b2c\u4f7f\u5199\u519b\u5427\u6587\u8fd0\u518d\u679c\u600e\u5b9a\u8bb8\u5feb\u660e\u884c\u56e0\u522b\u98de\u5916\u6811\u7269\u6d3b\u90e8\u95e8\u65e0\u5f80\u8239\u671b\u65b0\u5e26\u961f\u5148\u529b\u5b8c\u5374\u7ad9\u4ee3\u5458\u673a\u66f4\u4e5d\u60a8\u6bcf\u98ce\u7ea7\u8ddf\u7b11\u554a\u5b69\u4e07\u5c11\u76f4\u610f\u591c\u6bd4\u9636\u8fde\u8f66\u91cd\u4fbf\u6597\u9a6c\u54ea\u5316\u592a\u6307\u53d8\u793e\u4f3c\u58eb\u8005\u5e72\u77f3\u6ee1\u65e5\u51b3\u767e\u539f\u62ff\u7fa4\u7a76\u5404\u516d\u672c\u601d\u89e3\u7acb\u6cb3\u6751\u516b\u96be\u65e9\u8bba\u5417\u6839\u5171\u8ba9\u76f8\u7814\u4eca\u5176\u4e66\u5750\u63a5\u5e94\u5173\u4fe1\u89c9\u6b65\u53cd\u5904\u8bb0\u5c06\u5343\u627e\u4e89\u9886\u6216\u5e08\u7ed3\u5757\u8dd1\u8c01\u8349\u8d8a\u5b57\u52a0\u811a\u7d27\u7231\u7b49\u4e60\u9635\u6015\u6708\u9752\u534a\u706b\u6cd5\u9898\u5efa\u8d76\u4f4d\u5531\u6d77\u4e03\u5973\u4efb\u4ef6\u611f\u51c6\u5f20\u56e2\u5c4b\u79bb\u8272\u8138\u7247\u79d1\u5012\u775b\u5229\u4e16\u521a\u4e14\u7531\u9001\u5207\u661f\u5bfc\u665a\u8868\u591f\u6574\u8ba4\u54cd\u96ea\u6d41\u672a\u573a\u8be5\u5e76\u5e95\u6df1\u523b\u5e73\u4f1f\u5fd9\u63d0\u786e\u8fd1\u4eae\u8f7b\u8bb2\u519c\u53e4\u9ed1\u544a\u754c\u62c9\u540d\u5440\u571f\u6e05\u9633\u7167\u529e\u53f2\u6539\u5386\u8f6c\u753b\u9020\u5634\u6b64\u6cbb\u5317\u5fc5\u670d\u96e8\u7a7f\u5185\u8bc6\u9a8c\u4f20\u4e1a\u83dc\u722c\u7761\u5174\u5f62\u91cf\u54b1\u89c2\u82e6\u4f53\u4f17\u901a\u51b2\u5408\u7834\u53cb\u5ea6\u672f\u996d\u516c\u65c1\u623f\u6781\u5357\u67aa\u8bfb\u6c99\u5c81\u7ebf\u91ce\u575a\u7a7a\u6536\u7b97\u81f3\u653f\u57ce\u52b3\u843d\u94b1\u7279\u56f4\u5f1f\u80dc\u6559\u70ed\u5c55\u5305\u6b4c\u7c7b\u6e10\u5f3a\u6570\u4e61\u547c\u6027\u97f3\u7b54\u54e5\u9645\u65e7\u795e\u5ea7\u7ae0\u5e2e\u5566\u53d7\u7cfb\u4ee4\u8df3\u975e\u4f55\u725b\u53d6\u5165\u5cb8\u6562\u6389\u5ffd\u79cd\u88c5\u9876\u6025\u6797\u505c\u606f\u53e5\u533a\u8863\u822c\u62a5\u53f6\u538b\u6162\u53d4\u80cc\u7ec6"; // 生成存入session中 StringBuffer sb = new StringBuffer(); // 设置颜色 g.setColor(Color.YELLOW); // 设置字体 g.setFont(new Font("隶书", Font.BOLD, 20)); Random random = new Random(); int x = 20; int y = 20; for(int i=0;i<4;i++){ // void rotate(double theta, double x, double y) // theta 弧度 // hudu = jiaodu * Math.PI / 180; // 获取正负30之间的角度 int jiaodu = random.nextInt(60)-30; double hudu = jiaodu * Math.PI / 180; g.rotate(hudu, x, y); // 获取下标 int index = random.nextInt(words.length()); // 返回指定下标位置的字符,随机获取下标 char ch = words.charAt(index); // 添加字符 sb.append(ch); // 写字符串 g.drawString(""+ch, x, y); g.rotate(-hudu, x, y); x += 20; } // 存入session中 request.getSession().setAttribute("sessCode", sb.toString()); // 设置颜色 g.setColor(Color.GREEN); int x1,x2,y1,y2; // 画干扰线 for(int i=0;i<4;i++){ x1 = random.nextInt(width); y1 = random.nextInt(height); x2 = random.nextInt(width); y2 = random.nextInt(height); g.drawLine(x1, y1, x2, y2); } // 输出到客户端 ImageIO.write(image, "jpg", response.getOutputStream()); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } public static void main(String[] args) { System.out.println("\u9fa5"); System.out.println("\u9fa4"); System.out.println("\u9fa3"); System.out.println("\u9fa2"); } }LoginServlet.java
package cn.itcast.action; import java.io.IOException; import java.net.URLDecoder; import java.net.URLEncoder; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; import cn.itcast.service.RegService; import cn.itcast.vo.User; /** * 登陆 * @author Administrator * */ public class LoginServlet extends HttpServlet { private static final long serialVersionUID = -5933952794357976456L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 获取参数列表 * 封装数据 * 调用JavaBean完成业务 * 转发到Servlet */ request.setCharacterEncoding("UTF-8"); // 获取参数列表 Map<String, String []> map = request.getParameterMap(); // 创建User对象 User user = new User(); // 封装数据 try { BeanUtils.populate(user, map); // 完成登陆的功能 RegService service = new RegService(); // 登陆功能 User succUser = service.loginUser(user); // 如果succUser是null,说明登陆不成功 if(succUser == null){ // 登陆不成功,转发到登陆页面 request.setAttribute("msg", "用户名或者密码不正确"); request.getRequestDispatcher("/reg/login.jsp").forward(request, response); }else{ // 完成记住用户名的功能 // 获取复选框的内容 String remember = request.getParameter("remember"); // 判断 if(remember != null && "remember".equals(remember)){ String username = succUser.getUsername(); // 先把中文的名称编码 username = URLEncoder.encode(username, "UTF-8"); // 解码 // URLDecoder.decode(s, "UTF-8"); // System.out.println(username); // 记住用户名,保存到cookie中 aaa-123456 Cookie cookie = new Cookie("username", username); // 设置有效时间 cookie.setMaxAge(60*60); // 设置有效路径 cookie.setPath("/"); // 回写cookie response.addCookie(cookie); } // 登陆成功,跳转到某个页面,用户信息显示到页面上 // 重定向到成功的页面 // 显示用户的信息 request.getSession().setAttribute("succUser", succUser); response.sendRedirect(request.getContextPath()+"/reg/success.jsp"); } } catch (Exception e) { e.printStackTrace(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }RegServlet.java
package cn.itcast.action; import java.io.IOException; import java.net.URLDecoder; import java.net.URLEncoder; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.beanutils.BeanUtils; import cn.itcast.service.RegService; import cn.itcast.vo.User; /** * 登陆 * @author Administrator * */ public class LoginServlet extends HttpServlet { private static final long serialVersionUID = -5933952794357976456L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /** * 获取参数列表 * 封装数据 * 调用JavaBean完成业务 * 转发到Servlet */ request.setCharacterEncoding("UTF-8"); // 获取参数列表 Map<String, String []> map = request.getParameterMap(); // 创建User对象 User user = new User(); // 封装数据 try { BeanUtils.populate(user, map); // 完成登陆的功能 RegService service = new RegService(); // 登陆功能 User succUser = service.loginUser(user); // 如果succUser是null,说明登陆不成功 if(succUser == null){ // 登陆不成功,转发到登陆页面 request.setAttribute("msg", "用户名或者密码不正确"); request.getRequestDispatcher("/reg/login.jsp").forward(request, response); }else{ // 完成记住用户名的功能 // 获取复选框的内容 String remember = request.getParameter("remember"); // 判断 if(remember != null && "remember".equals(remember)){ String username = succUser.getUsername(); // 先把中文的名称编码 username = URLEncoder.encode(username, "UTF-8"); // 解码 // URLDecoder.decode(s, "UTF-8"); // System.out.println(username); // 记住用户名,保存到cookie中 aaa-123456 Cookie cookie = new Cookie("username", username); // 设置有效时间 cookie.setMaxAge(60*60); // 设置有效路径 cookie.setPath("/"); // 回写cookie response.addCookie(cookie); } // 登陆成功,跳转到某个页面,用户信息显示到页面上 // 重定向到成功的页面 // 显示用户的信息 request.getSession().setAttribute("succUser", succUser); response.sendRedirect(request.getContextPath()+"/reg/success.jsp"); } } catch (Exception e) { e.printStackTrace(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }RegService.java
package cn.itcast.service; import java.util.List; import org.dom4j.Document; import org.dom4j.Element; import cn.itcast.utils.MyXmlUtil; import cn.itcast.vo.User; /** * 操作XML * @author Administrator * */ public class RegService { /** * 操作XML,完成注册。XML中进行数据的添加。 * 用户名不能重名 * 邮箱是否重名 * @param user * @return * @throws Exception */ public int regUser(User user) throws Exception{ // 使用工具类,操作XML Document document = MyXmlUtil.getDocument(MyXmlUtil.PATH); // 解析XML // 获取根节点(查文档) Element root = document.getRootElement(); // 校验用户名或者邮箱是否重名 List<Element> uList = root.elements("user"); // 判断 if(uList != null || uList.size() > 0){ // XML中查询,和传入过来做对比,如果相同,重名了,返回 // 从XML中获取的 for (Element u : uList) { // 获取username节点的文本内容 // u.element("username").getText(); String xmlName = u.elementText("username"); // 获取传入进来的User 的名称 String uName = user.getUsername(); // 重名了,返回1 if(xmlName.equals(uName)){ return MyXmlUtil.NAMEEXIST; } // 获取xmlEamil String xmlEmail = u.elementText("email"); String uEamil = user.getEmail(); if(xmlEmail.equals(uEamil)){ return MyXmlUtil.EMAILEXIST; } } } // 需要在XML添加节点 Element uElement = root.addElement("user"); // 添加子节点 uElement.addElement("username").setText(user.getUsername()); uElement.addElement("password").setText(user.getPassword()); uElement.addElement("nickname").setText(user.getNickname()); uElement.addElement("email").setText(user.getEmail()); // 回写 MyXmlUtil.writeXml(document, MyXmlUtil.PATH); // 返回1 用户名重名了,返回是2邮箱重名,返回0注册成功 return MyXmlUtil.SUCCESS; } /** * 用户登陆 * @param user * @return * @throws Exception */ public User loginUser(User user) throws Exception { // 获取XML中用户名和密码的文本内容 Document document = MyXmlUtil.getDocument(MyXmlUtil.PATH); // 获取根节点 Element root = document.getRootElement(); // 先获取User的节点 List<Element> uList = root.elements("user"); if(uList != null && uList.size() > 0){ for (Element u : uList) { // 获取username和password的文本内容 String xmlName = u.elementText("username"); String uName = user.getUsername(); String xmlPass = u.elementText("password"); String uPass = user.getPassword(); // 可以登陆 if(xmlName.equals(uName) && xmlPass.equals(uPass)){ // 把昵称和邮箱存入到user对象中 user.setNickname(u.elementText("nickname")); user.setEmail(u.elementText("email")); return user; } } } return null; } }
package cn.itcast.utils; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; public class MyEl { // %E9%83%AD%E7%BE%8E%E7%BE%8E public static String myDecode(String str){ try { return URLDecoder.decode(str, "UTF-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return ""; } }MyXmlUtil.java
package cn.itcast.utils; import java.io.FileOutputStream; import org.dom4j.Document; import org.dom4j.io.OutputFormat; import org.dom4j.io.SAXReader; import org.dom4j.io.XMLWriter; /** * XML的工具类(DOM4J的知识) * @author Administrator * */ public class MyXmlUtil { // 数据库的路径 public static final String PATH = "d:\\user.xml"; // 用户名重名 public static final int NAMEEXIST = 1; // 邮箱重名 public static final int EMAILEXIST = 2; // 注册成功 public static final int SUCCESS = 0; // 获取Documen对象 public static Document getDocument(String path) throws Exception{ // 解析器对象 SAXReader reader = new SAXReader(); // 解析 return reader.read(path); } // 回写(XMLWriter) public static void writeXml(Document document,String path) throws Exception{ // 格式 OutputFormat format = OutputFormat.createPrettyPrint(); // 设置编码 format.setEncoding("UTF-8"); XMLWriter writer = new XMLWriter(new FileOutputStream(path), format); // 进行回写 writer.write(document); // 关闭流 writer.close(); } }User.java
package cn.itcast.vo; /** * User对象 * @author Administrator * */ public class User { private String username; private String password; private String nickname; private String email; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getNickname() { return nickname; } public void setNickname(String nickname) { this.nickname = nickname; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } }login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%> <%@ taglib uri="http://www.itcast.cn/1110/myfn" prefix="myfn" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body onload="run()"> <h4>登陆页面</h4> <% // 获取cookie %E9%83%AD%E7%BE%8E%E7%BE%8E // URLDecoder.decode(username, "UTF-8"); // 编写自定义EL函数 %> <!--${ cookie.username.value } / %E9%83%AD%E7%BE%8E%E7%BE%8E --> <!-- 切分 --> <form action="${pageContext.request.contextPath }/login" method="POST"> <!-- 输入姓名:<input type="text" name="username" value="${ cookie.username.value }"/><br/>--> <!--输入姓名:<input type="text" name="username" value="${ myfn:decode(cookie.username.value) }"/><br/>--> 输入姓名:<input type="text" id="nameId" name="username" /><br/> 输入密码:<input type="password" name="password" /><br/> <input type="checkbox" name="remember" value="remember" />记住用户名<br/> <input type="submit" value="登陆"/> </form> </body> <script type="text/javascript"> function run(){ // 接收cookie的值 var str = "${ cookie.username.value }"; // 解码 var newstr = decodeURI(str); // 赋值给文本框 document.getElementById("nameId").value = newstr; } </script> </html>reg.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript"> // 完成校验 function run(){ // 用户名不能为空 var username = document.form1.username.value; if(username == "" || username.length == 0){ alert("用户名不能为空"); return false; } // 密码不能为空,不能少于6位 var password = document.form1.password.value; if(password == "" || password.length < 6){ alert("密码至少6位"); return false; } // 确认密码和密码一致 var repassword = document.form1.repassword.value; if(repassword == "" || repassword != password){ alert("两次密码不一致"); return false; } // 昵称不能为空 var nickname = document.form1.nickname.value; if(nickname == "" || nickname.length == 0){ alert("昵称不能为空"); return false; } // 邮箱正确的邮箱格式 /.+@.+\.[a-zA-Z]{2,4}$/ var email = document.form1.email.value; if(!/.+@.+\.[a-zA-Z]{2,4}$/.test(email)){ alert("邮箱格式不正确"); return false; } // 可以提交了 } </script> </head> <body> <font color="red">${ requestScope.msg }</font> <form name="form1" action="/day13_mvc/reg" method="POST" onsubmit="return run()" > <table border="1" width="60%"> <tr> <td> 用户名 </td> <td> <input type="text" name="username" /> </td> </tr> <tr> <td> 密码 </td> <td> <input type="password" name="password" /> </td> </tr> <tr> <td> 确认密码 </td> <td> <input type="password" name="repassword" /> </td> </tr> <tr> <td> 昵称 </td> <td> <input type="text" name="nickname" /> </td> </tr> <tr> <td> 邮箱 </td> <td> <input type="text" name="email" /> </td> </tr> <tr> <td> 验证码 </td> <td> <input type="text" name="code" /> <a href="#" onclick="show(); return false;"><img id="imgId" src="${ pageContext.request.contextPath }/checkcode"></a> </td> </tr> <tr> <td colspan="2"> <input type="submit" value="注册"/> </td> </tr> </table> </form> </body> <script type="text/javascript"> function show(){ var image = document.getElementById("imgId"); image.src = "${pageContext.request.contextPath}/checkcode?"+new Date().getTime(); } </script> </html>success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <h3>昵称:${ succUser.nickname }</h3> <h3>邮箱:${succUser.email }</h3> <hr/> </body> </html>myfn.tld
<?xml version="1.0" encoding="UTF-8"?> <taglib version="2.0" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"> <tlib-version>1.0</tlib-version> <short-name>myfn</short-name> <uri>http://www.itcast.cn/1110/myfn</uri> <function> <name>decode</name> <function-class>cn.itcast.utils.MyEl</function-class> <function-signature>java.lang.String myDecode(java.lang.String)</function-signature> </function> </taglib>