一 验证码
登录login.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>xxx需求管理系统</title>
</head>
<script src="${pageContext.request.contextPath}/js/jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$(function () {
$("#login").click(function () {
var url="${pageContext.request.contextPath}/login"
var json={"username":$("#username").val(),"password":$("#password").val(),"checkcode":$("#checkcode").val()};
if($("#username").val()==""){
alert("用户名不能为空")
}else if($("#password").val()==""){
alert("密码不能为空")
}else {
function callback(msg) {
if(msg==0){
alert("用户名或密码错误")
}else if(msg==1){
alert("验证码错误！")
}else if(msg==2){
window.location.href="${pageContext.request.contextPath}/toSxf";
}
}
}
$.get(url,json,callback);
})
})
</script>
<body>
<div align="center" style="margin-top: 150px">
<h2 style="color: blue">xxx需求管理系统登录界面</h2>
用户名：<input type="text" name="username" id="username"></br></br>
密   码：<input type="password" name="password" id="password"></br></br>
<table align="center">
<tr>
<td>验证码：</td>
<td class="width50"><input id="checkcode" name="checkcode" type="text" class="width50" /></td>
<td><img src="createImage" alt="验证码" title="点击更换" onclick="this.src='createImage?'+(new Date()).getTime();"/></td>
<td><span id="checkcode_msg" class="required"></span></td>
</tr>
</table>
<input type="submit" value="登录" id="login">
<a href="${pageContext.request.contextPath}/toForgetPwd">忘记密码？</a>
<a href="${pageContext.request.contextPath}/toUpdatePwd">修改密码？</a>
</div>
</body>
</html>
后台处理 loginController
@RequestMapping("/login")
public void login(String username, String password,String checkcode, HttpServletResponse response,HttpSession session) throws IOException {
String code =(String) session.getAttribute("number");
if (service.login(username,password)==null) {
response.getWriter().println(0);
} else if(checkcode==null||checkcode.length()==0||!code.equalsIgnoreCase(checkcode)){
response.getWriter().println(1);
}else{
response.getWriter().println(2);
}
}
@GetMapping("/createImage")
public void createImage(HttpServletResponse response, HttpSession session) throws IOException {
BufferedImage image = new BufferedImage(80, 30, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
Random r = new Random();
g.setColor(new Color(r.nextInt(255), r.nextInt(255), r.nextInt(255)));
g.fillRect(0, 0, 80, 20);
//获取生成的验证码
String code = getNumber();
//绑定验证码
session.setAttribute("number", code);
g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 25));
g.setColor(new Color(r.nextInt(255), r.nextInt(255), r.nextInt(255)));
g.drawString(code, 5, 25);
//设置消息头
response.setContentType("image/jpeg");
OutputStream os = response.getOutputStream();
ImageIO.write(image, "jpeg", os);
}
public String getNumber(){
String str = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String code = "";
for(int i= 0;i<4;i++){
int index = (int)(Math.random()*str.length());
code+=str.charAt(index);
}
return code;
}
二 邮箱（主要功能：输入用户名，将重置密码发往注册时与用户名绑定的邮箱）
在你的 application.yml中加入
spring:
mail:
host: （发送者邮箱类型）
form: （发送者邮箱用户名）
port: 25
username: （发送者邮箱用户名）
password: （发送者邮箱密码）
@Autowired private JavaMailSender javaMailSender; @Value("${spring.mail.username}") private String username; @RequestMapping("/forgetPwd") public ModelAndView getPwd(HttpServletResponse response,String loginName) throws IOException { ModelAndView mv=new ModelAndView(); SimpleMailMessage simpleMailMessage = new SimpleMailMessage(); simpleMailMessage.setFrom(username); simpleMailMessage.setTo( service.getMail(loginName));//目的邮箱 simpleMailMessage.setSubject("重置密码"); //邮箱主题 simpleMailMessage.setText("重置的密码为123456789");//邮箱内容 自定义 javaMailSender.send(simpleMailMessage); mv.setViewName("login/success"); return mv; }