一、登录/注册/验证码
1. 登录、注册、主页等jsp前端页面准备
1.1 、首先我们在WebContent 文件夹下创建static （静态文件夹），该文件夹是用来放置静态文件的，static文件夹创建css、js、img三个文件夹。同时创建jsp页面，起初要创建的页面如下图：
1.2、当然，我们需要给出login.jsp的代码，使得我们不需要花费时间在样式上。
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<%
String path=request.getScheme()+"://"+request.getServerName()+":"+
request.getServerPort()+request.getContextPath()+"/";
pageContext.setAttribute("path", path);
%>
<!DOCTYPE html>
<html>
<head>
<title>ONESTAR-在线医疗管理系统</title>
<meta charset="UTF-8">
<link rel="icon" href="static/img/me.jpg" type="image/x-icon" />
<link rel="stylesheet" type="text/css" href="static/css/bootstrap.css" />
<link rel="stylesheet" type="text/css" href="static/css/bootstrap-responsive.css" />
<link rel="stylesheet" type="text/css" href="static/css/style.css" />
<link rel="stylesheet" type="text/css" href="static/css/login-inner.css" />
<!-- js -->
<script type="text/javascript" src="static/js/jquery.js"></script>
<script type="text/javascript" src="static/js/bootstrap.js"></script>
<script type="text/javascript" src="static/js/ckform.js"></script>
<script type="text/javascript" src="static/js/common.js"></script>
<script type="text/javascript" src="static/js/jquery-3.4.1.js"></script>
<!--表单验证 -->
<script type="text/javascript" src="static/js/jquery.validate.js"></script>
<script type="text/javascript" src="static/js/messages_zh.js"></script>
</head>
<body>
<div class="container">
<form class="form-signin" method="post" action="user" id="form-signin">
<input type="hidden" name="method" value="checkLogin">
<h2 class="form-signin-heading" >在线医疗管理系统</h2>
<p id="message" style=" 400px;height: 30px;text-align: center;"></p>
<p><input type="text" name="username" class="input-block-level" value="lisi" placeholder="账号" ></p>
<p><input type="password" name="password" class="input-block-level" placeholder="密码" value="321" >
<p class="yanzhengma">
<input type="text" name="verify" class="input-medium" placeholder="验证码" >
<img id="code" class="code_images" src="${path }authImage" />
<a href='javascript:void(0);' onclick="javascript:changeImg()" style="color:white;text-decoration: none;">
<span style="color:blue;margin-left: 5px;">看不清？</span>
<span id= "yanzhengmaError"></span>
</a>
</p>
<p style="text-align: center;">
<input id="login" type="button" value="登录" name="login" class="btn btn-large btn-primary" style=" 150px;"/>
<a href="regist.jsp">请先注册</a>
</p>
</form>
</div>
<script type="text/javascript">
function changeImg(){
var img = document.getElementById("code");
img.src = "${path}/authImage?date=" + new Date();;
}
</script>
</body>
</html>
1.3 register.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path=request.getScheme()+"://"+request.getServerName()+":"+
request.getServerPort()+request.getContextPath()+"/";
pageContext.setAttribute("path", path);
%>
<!DOCTYPE html>
<html>
<head>
<title>ONESTAR-在线医疗管理系统</title>
<meta charset="UTF-8">
<link rel="icon" href="static/img/me.jpg" type="image/x-icon" />
<link rel="stylesheet" type="text/css" href="static/css/bootstrap.css" />
<link rel="stylesheet" type="text/css" href="static/css/bootstrap-responsive.css" />
<link rel="stylesheet" type="text/css" href="static/css/style.css" />
<link rel="stylesheet" type="text/css" href="static/css/regist-inner.css" />
<!-- js -->
<script type="text/javascript" src="static/js/jquery.js"></script>
<script type="text/javascript" src="static/js/bootstrap.js"></script>
<script type="text/javascript" src="static/js/ckform.js"></script>
<script type="text/javascript" src="static/js/common.js"></script>
<script type="text/javascript" src="static/js/jquery-3.4.1.js"></script>
<script type="text/javascript" src="static/js/jquery.validate.js"></script>
<script type="text/javascript" src="static/js/messages_zh.js"></script>
</head>
<body>
<div class="container">
<form class="form-signin" method="post" action="user" id = "form-signin">
<input type="hidden" name="method" value="regist">
<h2 class="form-signin-heading" >管理员注册</h2>
<p id="message" style=" 400px;height: 30px;text-align: center;"></p>
姓 名：
<input type="text" name="name" class="input-block-level" placeholder="账号">
<br/>
密 码：
<input id="password" type="password" name="password" class="input-block-level" placeholder="密码">
<br/>
确认密码：<input type="password" name="password2" class="input-block-level" placeholder="确认密码">
<br/>
用 户 名：<input type="text" id="username" name="username" class="input-block-level" placeholder="用户名">
<span id="username_msg"></span><br/>
邮 箱：<input type="text" id="email" name="email" class="input-block-level" placeholder="邮箱">
<span id="email_msg"></span><br/>
<p style="text-align: center;">
<input id=register type="button" value="注册" name="login" class="btn btn-large btn-info" style=" 100px;"/>
<input id="reset" type="reset" value="清空" name="login" class="btn btn-large btn-info" style=" 100px;"/>
</p>
</form>
</div>
</body>
</html>
2. 表单验证和图片验证码
我们首先来讲图片验证码，让其能再登录页正常显示。
1.1、页面验证码时，img标签的src路径是： src="${path }authImage"，经解析后，实际上像后台请求的路径为：http://localhost:8080/hospital/authImage， 此时我们就需要在controller包中新建一个AuthImageServlet，注解路径为 @WebServlet("/authImage")，同时在util包创建生成验证码工具类 VerifyCodeUtils，两者代码如下：
AuthImageServlet代码：
package com.dzb.controller;
import java.io.IOException;
import javax.servlet.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 com.dzb.util.VerifyCodeUtils;
@WebServlet("/authImage")
public class AuthImageServlet extends HttpServlet implements Servlet{
static final long serialVersionUID = 1L;
public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
response.setContentType("image/jpeg");
// 参数：date
String date = request.getParameter("date");
System.out.println("date:" + date);
//生成随机字串
String verifyCode = VerifyCodeUtils.generateVerifyCode(4);
System.out.println("随机字符串：" + verifyCode);
//存入会话session
HttpSession session = request.getSession(true);
System.out.println("Session:" + session);
//删除以前的
session.removeAttribute("verCode");
session.setAttribute("verCode", verifyCode.toLowerCase());
//生成图片
int w = 100, h = 30;
VerifyCodeUtils.outputImage(w, h, response.getOutputStream(), verifyCode);
}
}
工具类VerifyCodeUtils：
package com.dzb.util;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Random;
import javax.imageio.ImageIO;
/**
* 生成验证码工具类
* @author dzbiao
*
*/
public class VerifyCodeUtils {
// 使用到Algerian字体，系统里没有的话需要安装字体，字体只显示大写，去掉了1,0,i,o几个容易混淆的字符
public static final String VERIFY_CODES = "23456789ABCDEFGHJKLMNPQRSTUVWXYZ";
private static Random random = new Random();
/**
* 使用系统默认字符源生成验证码
*
* @param verifySize 验证码长度
* @return
*/
public static String generateVerifyCode(int verifySize) {
return generateVerifyCode(verifySize, VERIFY_CODES);
}
/**
* 使用指定源生成验证码
*
* @param verifySize 验证码长度
* @param sources 验证码字符源
* @return
*/
public static String generateVerifyCode(int verifySize, String sources) {
if (sources == null || sources.length() == 0) {
sources = VERIFY_CODES;
}
int codesLen = sources.length();
Random rand = new Random(System.currentTimeMillis());
StringBuilder verifyCode = new StringBuilder(verifySize);
for (int i = 0; i < verifySize; i++) {
verifyCode.append(sources.charAt(rand.nextInt(codesLen - 1)));
}
return verifyCode.toString();
}
/**
* 生成随机验证码文件,并返回验证码值
*
* @param w
* @param h
* @param outputFile
* @param verifySize
* @return
* @throws IOException
*/
public static String outputVerifyImage(int w, int h, File outputFile, int verifySize) throws IOException {
String verifyCode = generateVerifyCode(verifySize);
outputImage(w, h, outputFile, verifyCode);
return verifyCode;
}
/**
* 输出随机验证码图片流,并返回验证码值
*
* @param w
* @param h
* @param os
* @param verifySize
* @return
* @throws IOException
*/
public static String outputVerifyImage(int w, int h, OutputStream os, int verifySize) throws IOException {
String verifyCode = generateVerifyCode(verifySize);
outputImage(w, h, os, verifyCode);
return verifyCode;
}
/**
* 生成指定验证码图像文件
*
* @param w
* @param h
* @param outputFile
* @param code
* @throws IOException
*/
public static void outputImage(int w, int h, File outputFile, String code) throws IOException {
if (outputFile == null) {
return;
}
File dir = outputFile.getParentFile();
if (!dir.exists()) {
dir.mkdirs();
}
try {
outputFile.createNewFile();
FileOutputStream fos = new FileOutputStream(outputFile);
outputImage(w, h, fos, code);
fos.close();
} catch (IOException e) {
throw e;
}
}
/**
* 输出指定验证码图片流
*
* @param w
* @param h
* @param os
* @param code
* @throws IOException
*/
public static void outputImage(int w, int h, OutputStream os, String code) throws IOException {
int verifySize = code.length();
BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Random rand = new Random();
Graphics2D g2 = image.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
Color[] colors = new Color[5];
Color[] colorSpaces = new Color[] { Color.WHITE, Color.CYAN, Color.GRAY, Color.LIGHT_GRAY, Color.MAGENTA,
Color.ORANGE, Color.PINK, Color.YELLOW };
float[] fractions = new float[colors.length];
for (int i = 0; i < colors.length; i++) {
colors[i] = colorSpaces[rand.nextInt(colorSpaces.length)];
fractions[i] = rand.nextFloat();
}
Arrays.sort(fractions);
g2.setColor(Color.GRAY);// 设置边框色
g2.fillRect(0, 0, w, h);
Color c = getRandColor(200, 250);
g2.setColor(c);// 设置背景色
g2.fillRect(0, 2, w, h - 4);
// 绘制干扰线
Random random = new Random();
g2.setColor(getRandColor(160, 200));// 设置线条的颜色
for (int i = 0; i < 20; i++) {
int x = random.nextInt(w - 1);
int y = random.nextInt(h - 1);
int xl = random.nextInt(6) + 1;
int yl = random.nextInt(12) + 1;
g2.drawLine(x, y, x + xl + 40, y + yl + 20);
}
// 添加噪点
float yawpRate = 0.05f;// 噪声率
int area = (int) (yawpRate * w * h);
for (int i = 0; i < area; i++) {
int x = random.nextInt(w);
int y = random.nextInt(h);
int rgb = getRandomIntColor();
image.setRGB(x, y, rgb);
}
shear(g2, w, h, c);// 使图片扭曲
g2.setColor(getRandColor(100, 160));
int fontSize = h - 4;
Font font = new Font("Algerian", Font.ITALIC, fontSize);
g2.setFont(font);
char[] chars = code.toCharArray();
for (int i = 0; i < verifySize; i++) {
AffineTransform affine = new AffineTransform();
affine.setToRotation(Math.PI / 4 * rand.nextDouble() * (rand.nextBoolean() ? 1 : -1),
(w / verifySize) * i + fontSize / 2, h / 2);
g2.setTransform(affine);
g2.drawChars(chars, i, 1, ((w - 10) / verifySize) * i + 5, h / 2 + fontSize / 2 - 10);
}
g2.dispose();
ImageIO.write(image, "jpg", os);
}
private static Color getRandColor(int fc, int bc) {
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
}
private static int getRandomIntColor() {
int[] rgb = getRandomRgb();
int color = 0;
for (int c : rgb) {
color = color << 8;
color = color | c;
}
return color;
}
private static int[] getRandomRgb() {
int[] rgb = new int[3];
for (int i = 0; i < 3; i++) {
rgb[i] = random.nextInt(255);
}
return rgb;
}
private static void shear(Graphics g, int w1, int h1, Color color) {
shearX(g, w1, h1, color);
shearY(g, w1, h1, color);
}
private static void shearX(Graphics g, int w1, int h1, Color color) {
int period = random.nextInt(2);
boolean borderGap = true;
int frames = 1;
int phase = random.nextInt(2);
for (int i = 0; i < h1; i++) {
double d = (double) (period >> 1)
* Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
g.copyArea(0, i, w1, 1, (int) d, 0);
if (borderGap) {
g.setColor(color);
g.drawLine((int) d, i, 0, i);
g.drawLine((int) d + w1, i, w1, i);
}
}
}
private static void shearY(Graphics g, int w1, int h1, Color color) {
int period = random.nextInt(40) + 10; // 50;
boolean borderGap = true;
int frames = 20;
int phase = 7;
for (int i = 0; i < w1; i++) {
double d = (double) (period >> 1)
* Math.sin((double) i / (double) period + (6.2831853071795862D * (double) phase) / (double) frames);
g.copyArea(i, 0, 1, h1, 0, (int) d);
if (borderGap) {
g.setColor(color);
g.drawLine(i, (int) d, i, 0);
g.drawLine(i, (int) d + h1, i, h1);
}
}
}
}
1.2 验证码原理简析
由前端传入日期参数date，通过工具类生成四位随机字符串，以小写形式存入session会话中，当前端需要更换验证码随机字符串时，也需要通过该流程，只是在此基础上添加了删除以前的session，即：session.removeAttribute("verCode"); 重新添加而已。
1.3 表单验证
表单验证实际上使用了jquery.validate.js 插件，我们可以在菜鸟教程上简单的学习一下用法。地址：https://www.runoob.com/jquery/jquery-plugin-validate.html
表单验证使用name属性作为rules和messages的定位属性，因此我们必须在input 标签中声明name，与此同时 form标签添加 id定位 id="form-signin"。
js 中的验证规则为：
/* 表单验证 */
$("#form-signin").validate({
errorPlacement: function(error, element) {
if (element.parent().hasClass("yanzhengma")){
error.appendTo($("#yanzhengmaError")); // 将错误信息添加到id为 yanzhengmaError中
}else {
error.insertAfter(element);
}
},
onfocusout: function(element) { $(element).valid(); },
rules:{ // 规则
username:{ // 用户名
required:true
},
password:{ // 密码
required:true
},
verify:{ // 验证码
required:true
}
},
messages:{
username:{
required:"用户名不能为空"
},
password:{
required: "密码不能为空"
},
verify:{
required: "验证码不能为空"
}
},
errorElement: "em"
});
当我们点击提交按钮的时候，我们如何获取表单数据是否验证成功的提示呢？所以我们通过 var flag = $("#form-signin").valid();获取，当表单的所有值都按照我们的要求通过后，flag 为true，反之，为false,基于这一点，我们判断是否提交。
// 提交按钮 点击触发
$("#login").click(function(){
var flag = $("#form-signin").valid();
if(!flag){
//没有通过验证
alert("没有通过验证");
return;
}
var data = $("#form-signin").serialize();
$.ajax({
url:"user/login",
type:"post",
data:data,
dataType:"json",
success:function(message){
console.log(message);
if(message.status_code == 200){
$("#message").css("color","green");
setTimeout(function(){
location.href = "${path}"+"index.jsp";
},1000) ;
}else{
$("#message").css("color","red");
}
$("#message").text(message.message);
}
});
});
1.4 同理，注册页面的表单验证也如登录页一样，在这就不多说，直接粘贴在register.jsp页面中。直接上代码：
<script type="text/javascript">
/* 表单验证 */
$("#form-signin").validate({
onfocusout: function(element) { $(element).valid(); },
rules:{
name:{
required:true
},
password:{
required:true
},
password2:{
required:true,
equalTo:"#password"
} ,
username:{
required:true,
},
email:{
required:true,
email:true
}
},
messages:{
name:{
required:"用户名不能为空"
},
password:{
required: "密码不能为空"
},
password2:{
required: "确认密码必须和密码一样"
} ,
username:{
required: "用户昵称不能为空"
},
email:{
required: "邮箱格式不正确"
}
},
errorElement: "em"
});
// 表单提交
$("#register").click(function(){
var flag = $("#form-signin").valid();
if(!flag){
//没有通过验证
alert("没有通过验证");
return;
}
var data = $("#form-signin").serialize();
$.ajax({
url:"user/register",
type:"post",
data:data,
dataType:"json",
success:function(message){
console.log(message);
console.log(message.status_code);
console.log(message.message);
if(message.status_code == 200){
$("#message").css("color","green");
setTimeout(function(){
location.href = "${path}";
},1000) ;
}else{
$("#message").css("color","red");
}
$("#message").text(message.message);
}
});
});
</script>
3.后端User模块的创建准备
- 首先我们在entity包下创建 实体类：USers.java
package com.dzb.entity;
import java.util.Date;
/**
* Bean ： Users实体类
* @author dzb
*/
public class Users {
private Integer uid; // 用户编号
private String name ; // 用户名
private String email; // 邮箱地址
private Integer status ; // 用户状态： 1 表示普通用户，0 表示管理员
private String username; // 用户昵称
private String password ; // 密码
private Date modifytime; // 修改时间
public Users() {} // 无参构造一定要加
public Users(String username, String password) {
super();
this.username = username;
this.password = password;
}
public Users(String name, String email, Integer status, String username, String password) {
super();
this.name = name;
this.email = email;
this.status = status;
this.username = username;
this.password = password;
}
public Users(String name, String email, Integer status, String username, String password, Date modifytime) {
this.name = name;
this.email = email;
this.status = status;
this.username = username;
this.password = password;
this.modifytime = modifytime;
}
public Integer getUid() {
return uid;
}
public void setUid(Integer uid) {
this.uid = uid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Integer getStatus() {
return status;
}
public void setStatus(Integer status) {
this.status = status;
}
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 Date getModifytime() {
return modifytime;
}
public void setModifytime(Date modifytime) {
this.modifytime = modifytime;
}
@Override
public String toString() {
return "Users [uid=" + uid + ", name=" + name + ", email=" + email + ", status=" + status + ", username="
+ username + ", password=" + password + ", modifytime=" + modifytime + "]";
}
}
-
和mysql 连接的DruidUtils.java 工具类。所有工具类地址：https://gitee.com/duanxiaobiao/hospital-jsp/tree/master/src/com/dzb/util
-
我们还需要创建一个Message类作为我们返回json数据封装的实体类：
package com.dzb.entity;
import java.util.List;
import java.util.Map;
public class Message {
private Integer status_code;
private String message;
private Map<String, List> map;
public Message() {}
public Message(Integer status_code, String message) {
super();
this.status_code = status_code;
this.message = message;
}
public Integer getStatus_code() {
return status_code;
}
public void setStatus_code(Integer status_code) {
this.status_code = status_code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
@Override
public String toString() {
return "Message [status_code=" + status_code + ", message=" + message + "]";
}
public Map<String, List> getMap() {
return map;
}
public void setMap(Map<String, List> map) {
this.map = map;
}
}
- 实体类和工具类完成后，我们就开始按照顺序建立User模块需要的类：UserServlet --> UserService --> UserServiceImpl --> UserDao --> UserDaoImpl (这种分层，我原意是想仿照springmvc 项目的controller --> service -->serviceImpl -->dao -->mapper分层结构)。注意：要创建在对应的包下。完成后项目节后如下：
4.登录逻辑
1.controller层
我们开始编写controller层中UserServlet类中login方法逻辑：我们期望将验证码参数和session中存储的验证码参数向比较，相等则进行登录查询验证，验证成功后将用户数据存储进session中，并设置有效时间。
而返回json数据的关键在于：
// 要返回的消息实体
Message message = new Message();
ObjectMapper mapper = new ObjectMapper();
// 写response
json = mapper.writeValueAsString(message);
response.getWriter().print(json);
UserServlet的login方法的完整逻辑如下：
UserService userService = new UserServiceImpl(); // 这个放置在类序列号下即可
public void login(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
// 设置编码格式
response.setCharacterEncoding("UTF-8");
// 消息实体
Message message = new Message();
ObjectMapper mapper = new ObjectMapper();
String json = null;
String username = request.getParameter("username");
String password = request.getParameter("password");
String verify = request.getParameter("verify");
HttpSession session = request.getSession();
String sessionVerify = (String) session.getAttribute("verCode");
Users user = new Users(username,password);
HttpSession sessionUser = request.getSession();
if(!(verify.toLowerCase().equals(sessionVerify))) {
message.setStatus_code(100);
message.setMessage("验证码不正确");
}else {
boolean isExist = userService.checkUser(user);
if(isExist) {
// 存在允许登录;
message.setStatus_code(200);
message.setMessage("登录成功");
System.out.println(user);
sessionUser.setAttribute("user", user.getUsername());
sessionUser.setMaxInactiveInterval(1*60*60);
System.out.println("Session已经设置！一小时后失效.");
}else {
// 不存在登录失败;
message.setStatus_code(100);
message.setMessage("用户名或密码错误，登录失败");
}
}
// 写response
json = mapper.writeValueAsString(message);
response.getWriter().print(json);
}
2.UserService层
UserService 接口添加 该方法 ：
/***
* 检查用户
* @param user
* @return
*/
boolean checkUser(Users user);
3.UserServiceImpl实现层
UserServiceImpl 实现类添加：
UserDao userDao = new UserDaoImpl();
@Override
public boolean checkUser(Users user) {
// TODO Auto-generated method stub
return userDao.checkUser(user);
}
4.UserDao层
UserDao 接口添加 ：
boolean checkUser(Users user);
5.UserDaoImpl 层
UserDaoImpl 添加：
// 获取资源连接
private QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());
/**
* 检查用户是否存在
*/
@Override
public boolean checkUser(Users user) {
String sql = "select * from users where username = ? and password = ?";
Users u = null;
try {
u = qr.query(sql, new BeanHandler<Users(Users.class),user.getUsername(),user.getPassword());
} catch (SQLException e) {
e.printStackTrace();
}
if(u != null) {
return true;
}else {
return false;
}
}
5.注册逻辑
和登录逻辑一样，我就不详细说了。直接粘贴各层代码。
controller层
public void register(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException, IllegalAccessException, InvocationTargetException {
// 设置编码格式
response.setCharacterEncoding("UTF-8");
// 消息实体
Message message = new Message();
ObjectMapper mapper = new ObjectMapper();
String json = null;
String name = request.getParameter("name");
String password = request.getParameter("password");
String password2 = request.getParameter("password2");
String username = request.getParameter("username");
String email = request.getParameter("email");
System.out.println("password:" + password);
System.out.println("password2:" + password2);
String[] paraArr = new String[] {name,password,password2,username,email};
// 检查参数是否为空.
boolean isEmpty = ParaCheck.isEmpty(paraArr);
if(isEmpty) {message.setStatus_code(100);message.setMessage("参数不能为空");}
// 检查用户密码和确认密码是否一致
boolean isEqual = password.equals(password2);
if(!isEqual) {
message.setStatus_code(100);
message.setMessage("密码和确认密码不一致.");
}else if(!ParaCheck.emailFormat(email)) { // 检查email格式是否正确。
message.setStatus_code(100);
message.setMessage("邮箱格式不合法");
}else { // 验证后：
System.out.println("数据通过验证，开始存储数据.");
Users user = new Users(name,email,1,username,password,new Date());
// 首先查询是否存在该用户
boolean isExist = userService.isExistUser(user);
if(!isExist) {
// 不存在则注册
int result = userService.insertUser(user);
if(result == 1) {
message.setStatus_code(200);
message.setMessage("注册成功");
Map<String ,String> map = new HashMap<String, String>();
map.put(user.getUsername(),user.getPassword());
// message.setMap(map);
}else {
// 添加失败
message.setStatus_code(100);
message.setMessage("添加失败");
}
}else {
// 存在则返回失败信息
message.setStatus_code(100);
message.setMessage("用户昵称已存在！");
}
}
// 写response
json = mapper.writeValueAsString(message);
response.getWriter().print(json);
}
Userservice层添加
/**
* 查询是否存在该用户：
* @param user
* @return
*/
boolean isExistUser(Users user);
/**
* 添加用户
* @param user
* @return
*/
int insertUser(Users user);
UserServiceImpl层 添加 :
/**
* 查询是否存在用户
*/
@Override
public boolean isExistUser(Users user) {
return userDao.isExistUser(user);
}
/**
* 添加用户
*/
@Override
public int insertUser(Users user) {
// TODO Auto-generated method stub
return userDao.insertUser(user);
}
UserDao层
boolean isExistUser(Users user);
/**
* 添加用户
* @param user
* @return
*/
int insertUser(Users user);
UserDaoImpl 层
/**
* 查询用户是否存在
*/
@Override
public boolean isExistUser(Users user) {
String sql = "select * from users where username = ? ";
Users u = null;
try {
u = qr.query(sql, new BeanHandler<Users>(Users.class),user.getName());
} catch (SQLException e) {
e.printStackTrace();
}
if(u != null) {
return true;
}else {
return false;
}
}
/**
* 添加用户
*/
@Override
public int insertUser(Users user) {
String sql = "insert into users(name,email,status,username,password,modifytime) values(?,?,?,?,?,?)";
int result = 0;
try {
result = qr.update(sql, user.getName(),user.getEmail(),user.getStatus(),user.getUsername(),
user.getPassword(),user.getModifytime());
} catch (SQLException e) {
System.out.println(e);
System.out.println("Insert方法添加失败。");
}
return result;
}
结尾
第二章实现了项目框架的搭建，图形验证码、登录、注册功能等模块的实现，下一章 构建页面的列表页，分页、增删改查等基本功能。