1.了解项目和创建springboot文件
2.编写pom.xml文件
学生管理系统所使用的技术主要是soringboot jsp ajax SSM，所以我们需要引入的包大概有这些：
代码语言：javascript复制<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.3.3.RELEASEversion>
<relativePath/>
parent>
<groupId>comgroupId>
<artifactId>student_systemartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>student_systemname>
<description>Demo project for Spring Bootdescription>
<properties>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.1.3version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
<scope>runtimescope>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.apache.commonsgroupId>
<artifactId>commons-lang3artifactId>
<version>3.9version>
dependency>
<dependency>
<groupId>jstlgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<scope>runtimescope>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>1.1.22version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.17version>
dependency>
<dependency>
<groupId>org.apache.tomcat.embedgroupId>
<artifactId>tomcat-embed-jasperartifactId>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
<exclusions>
<exclusion>
<groupId>org.junit.vintagegroupId>
<artifactId>junit-vintage-engineartifactId>
exclusion>
exclusions>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
plugins>
build>
project>3.编写application.properties
代码语言：javascript复制spring.application.name=student_system
server.servlet.context-path=/student_system
server.servlet.jsp.init-parameters.development=true
spring.datasource.username=root
spring.datasource.password=
spring.datasource.url=jdbc:mysql://localhost:3306/student_system?useSSL=false&serverTimezone=UTC&characterEncoding=utf-8
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.mvc.view.prefix=/
spring.mvc.view.suffix=.jsp
mybatis.mapper-locations=classpath:com/mapper/*.xml
mybatis.type-aliases-package=com.pojo
logging.level.root=info
logging.level.com.baizhi.dao=debug4.数据库设计
/*用户表*/
create table t_user(
id int(6) primary key auto_increment,
name varchar(40),
password varchar(20),
status varchar(10),
regtime timestamp,
role varchar(10)
);
/*城市表*/
create table t_city(
id int(6) primary key auto_increment,
name varchar(40),
createtime timestamp,
numbers int(8)
);
/*标签表*/
create table t_tag(
id int(6) primary key auto_increment,
name varchar(40),
type varchar(20),
createtime timestamp
);
/*班级表*/
create table t_clazz(
id int(6) primary key auto_increment,
name varchar(40),
tagid int(6) references t_tag(id)
);
/*小组表*/
create table t_group(
id int(6) primary key auto_increment,
name varchar(40),
content varchar(200),
clazzid int(6) references t_clazz(id)
);
/*学生表*/
create table t_student(
id int(6) primary key auto_increment,
name varchar(40),
age int(3),
bir timestamp,
phone varchar(11),
qq varchar(16),
attr varchar(6),
starts varchar(14),
mark varchar(200),
cityid int(6) references t_city(id),
clazzid int(6) references t_clazz(id),
groupid int(6) references t_group(id)
);
/*学生标签关系表*/
create table t_student_tag(
id int(6) primary key auto_increment,
studentid int(6) references t_student(id),
tagid int(6) references t_tag(id),
);
建立数据库: student_system UTF-85.用户登陆功能的实现（jsp）
a.登陆
由于我们这次没有使用thymeleaf模板引擎，所以还需要在main下面创建一个webapp目录来保存jsp。前端的页面去网上cope了一个还算美观整洁的页面，自带表单验证功能和一些好看的UI设计，让我这个后端的小白还是很喜欢的。
<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>登陆title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="robots" content="all,follow">
<link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/4.2.1/css/bootstrap.min.css">
<link rel="stylesheet" href="statics/css/style.default.css" id="theme-stylesheet">
head>
<body>
<div class="page login-page">
<div class="container d-flex align-items-center">
<div class="form-holder has-shadow">
<div class="row">
<div class="col-lg-6">
<div class="info d-flex align-items-center">
<div class="content">
<div class="logo">
<h1>欢迎登录h1>
div>
<p>班级管理系统p>
div>
div>
div>
<div class="col-lg-6 bg-white">
<div class="form d-flex align-items-center">
<div class="content">
<form method="post" class="form-validate" id="loginFrom">
<div class="form-group">
<input id="login-username" type="text" name="name" required data-msg="请输入用户名" placeholder="用户名" value="admin" class="input-material">
div>
<div class="form-group">
<input id="login-password" type="password" name="password" required data-msg="请输入密码" placeholder="密码" class="input-material">
div>
<div class="form-group">
<input id="login-code" style="width: 60%;float: left" type="text" name="code" required data-msg="请输入验证码" placeholder="验证码" class="input-material">
<img src="${pageContext.request.contextPath}/user/getImage" id="image">
div>
<button id="logBtn" type="button" class="btn btn-primary">登录button>
<div style="margin-top: -40px;">
<div class="custom-control custom-checkbox " style="float: right;">
<input type="checkbox" class="custom-control-input" id="check2" >
<label class="custom-control-label" for="check2">自动登录label>
div>
<div class="custom-control custom-checkbox " style="float: right;">
<input type="checkbox" class="custom-control-input" id="check1" >
<label class="custom-control-label" for="check1">记住密码 label>
div>
div>
form>
<br>
<br>
<small>没有账号?small><a href="regist.jsp" class="signup"> 注册a>
div>
div>
div>
div>
div>
div>
div>
body>
html>
<script src="statics/js/jquery.min.js">script>
<script src="statics/layui/layui.js">script>
<script src="statics/js/bootstrap.min.js">script>
<script src="statics/vendor/jquery-validation/jquery.validate.min.js">script>
<script>
$(function () {
// 绑定登陆按钮的单击事件
$("#logBtn").click(function () {
$.post("${pageContext.request.contextPath}/user/login",$("#loginFrom").serialize(),function (res) {
if (res.statue) {
layui.use("layer",function () {
layer.alert(res.msg ",点击确定跳转至主页", {
skin: 'layui-layer-molv' //样式类名
,closeBtn: 0
});
// var layer=layui.layer;
// layer.alert(res.msg ",点击确定跳转至主页");
});
location.href = "${pageContext.request.contextPath}/back/index.jsp";
}else(
layui.use("layer",function () {
var layer=layui.layer;
layer.msg(res.msg, {icon: 5});
})
)
})
});
//更换验证码
$("#image").click(function () {
$("#image").attr("src","${pageContext.request.contextPath}/user/getImage");
})
});
$(function(){
/*判断上次是否勾选记住密码和自动登录*/
var check1s=localStorage.getItem("check1");
var check2s=localStorage.getItem("check2");
var oldName=localStorage.getItem("userName");
var oldPass=localStorage.getItem("passWord");
if(check1s=="true"){
$("#login-username").val(oldName);
$("#login-password").val(oldPass);
$("#check1").prop('checked',true);
}else{
$("#login-username").val('');
$("#login-password").val('');
$("#check1").prop('checked',false);
}
if(check2s=="true"){
$("#check2").prop('checked',true);
$("#loginFrom").submit();
//location="https://www.baidu.com?userName=" oldName "&passWord=" oldPass;//添加退出当前账号功能
}else{
$("#check2").prop('checked',false);
}
$("#login").click(function(){
var userName=$("#login-username").val();
var passWord=$("#login-password").val();
/*获取当前输入的账号密码*/
localStorage.setItem("userName",userName)
localStorage.setItem("passWord",passWord)
/*获取记住密码 自动登录的 checkbox的值*/
var check1 = $("#check1").prop('checked');
var check2 = $('#check2').prop('checked');
localStorage.setItem("check1",check1);
localStorage.setItem("check2",check2);
})
/*$("#check2").click(function(){
var flag=$('#check2').prop('checked');
if(flag){
var userName=$("#login-username").val();
var passWord=$("#login-password").val();
$.ajax({
type:"post",
url:"http://localhost:8080/powers/pow/regUsers",
data:{"userName":userName,"passWord":passWord},
async:true,
success:function(res){
alert(res);
}
});
}
})*/
})
script>创建一个实体类User（偷懒了使用了lombok）
代码语言：javascript复制package com.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
import lombok.experimental.Accessors;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
@Accessors(chain = true)
public class User {
private String id;
private String name;
private String password;
private String status;
private Date regtime;
private String role;
}编写Mapper接口（UserMapper）
代码语言：javascript复制package com.mapper;
import com.pojo.User;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper {
User findByName(String name);
}编写Mapper.xml（UserMapper）
代码语言：javascript复制<mapper namespace="com.mapper.UserMapper">
<select id="findByName" parameterType="string" resultType="com.pojo.User">
select * from t_user where name = #{name}
select>
mapper>编写Service接口（UserService）
代码语言：javascript复制package com.service;
import com.pojo.User;
public interface UserService {
User login (User user);
}顺便写了实现类（UserServiceImpl）
代码语言：javascript复制package com.service.impl;
import com.mapper.UserMapper;
import com.pojo.User;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.Date;
@Service
public class UserServiceImpl implements UserService {
@Autowired
UserMapper userMapper;
@Override
public User login(User user) {
User u=userMapper.findByName(user.getName());
if (u!=null){
if (u.getPassword().equals(user.getPassword())){
return u;
}else {
throw new RuntimeException("密码输入错误");
}
}
throw new RuntimeException("用户名输入错误，请从新输入");
}
}还漏了一个很重要的东西—验证码！我在网上找了一个很不错的验证码的工具类，可以码起来，有需要的时候可以拿！
代码语言：javascript复制package com.utils;
import javax.imageio.ImageIO;
import java.awt.*;
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;
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);
}
}
}
public static void main(String[] args) throws IOException {
//获取验证码
String s = generateVerifyCode(4);
//将验证码放入图片中
outputImage(260,60,new File("/Users/chenyannan/Desktop/安工资料/aa.jpg"),s);
System.out.println(s);
}
}最后就是编写我们的Controller进行测试啦（UserController）
代码语言：javascript复制package com.controller;
import com.Result.Result;
import com.mapper.UserMapper;
import com.pojo.User;
import com.service.UserService;
import com.utils.VerifyCodeUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
UserService userService;
@RequestMapping("login")
@ResponseBody
public Result login(String code,User user,HttpSession session){
Result result =new Result();
// 取出验证码
String imagecode = (String) session.getAttribute("code");
try {
if (imagecode.equalsIgnoreCase(code)){
User u = userService.login(user);
session.setAttribute("user",u);//把用户存到session中
result.setMsg("登陆成功");
result.setStatue(true);
return result;
}
throw new RuntimeException("验证码输入错误！！");
}catch (Exception e){
e.printStackTrace();
result.setStatue(false);
result.setMsg(e.getMessage());
}
return result;
}
// 生成验证码
@RequestMapping("getImage")
public void getImage(HttpSession session, HttpServletResponse response) throws IOException {
// 1.获取随机数
String code = VerifyCodeUtils.generateVerifyCode(4);//获取4位随机数
// 2.将数字存入session中
session.setAttribute("code", code);
// 3.生成验证码图片
VerifyCodeUtils.outputImage(120, 43, response.getOutputStream(), code);
}
}结语：这样我们的登陆功能就写好啦，如果有bug可以留言噢
b.注册
注册的功能其实和登陆如出一辙，一个是去数据库里面根据用户名查询，然后检验密码是否正确，注册就是往数据库里面添加一条数据，首先是页面的引入
<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Bootstrap Material Admintitle>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="robots" content="all,follow">
<link rel="stylesheet" href="statics/css/bootstrap.min.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Poppins:300,400,700">
<link rel="stylesheet" href="statics/css/style.default.css" id="theme-stylesheet">
head>
<body>
<div class="page login-page">
<div class="container d-flex align-items-center">
<div class="form-holder has-shadow">
<div class="row">
<div class="col-lg-6">
<div class="info d-flex align-items-center">
<div class="content">
<div class="logo">
<h1>欢迎注册h1>
div>
<p>注册登录界面模板p>
div>
div>
div>
<div class="col-lg-6 bg-white">
<div class="form d-flex align-items-center">
<div class="content">
<form id="regForm">
<div class="form-group">
<input id="register-username" class="input-material" type="text" name="name" placeholder="请输入用户名/姓名" >
<div class="invalid-feedback">
用户名必须在2~10位之间
div>
div>
<div class="form-group">
<input id="register-password" class="input-material" type="password" name="password" placeholder="请输入密码" >
<div class="invalid-feedback">
密码必须在6~10位之间
div>
div>
<div class="form-group">
<input id="register-passwords" class="input-material" type="password" name="passwords" placeholder="确认密码" >
<div class="invalid-feedback">
两次密码必须相同 且在6~10位之间
div>
div>
<div class="form-group">
<label for="role">label>
<select class="form-control" name="role" id="role">
<option value="admin">管理员option>
<option value="student">学生option>
select>
div>
<br>
<div class="form-group">
<button id="regBtn" type="button" name="registerSubmit" class="btn btn-primary">注册button>
div>
<small>已有账号?small><a href="login.html" class="signup"> 登录a>
form>
div>
div>
div>
div>
div>
div>
div>
<script src="statics/js/jquery.min.js">script>
<script src="statics/layui/layui.js">script>
<script src="statics/js/bootstrap.min.js">script>
<script>
$(function(){
//注册
$("#regBtn").click(function(){
$.post("${pageContext.request.contextPath}/user/register",$("#regForm").serialize(),function (res) {
if(res.statue){
layui.use("layer",function () {
var layer=layui.layer;
layer.alert(res.msg ",点击确定跳转至登录页面", {icon: 6});
});
location.href = "${pageContext.request.contextPath}/back/login.jsp";
}else{
layui.use("layer",function () {
var layer=layui.layer;
layer.msg(res.msg, {icon: 5});
});
}
});
});
/*错误class form-control is-invalid
正确class form-control is-valid*/
var flagName=false;
var flagPas=false;
var flagPass=false;
/*验证用户名*/
var name,passWord,passWords;
$("#register-username").change(function(){
name=$("#register-username").val();
if(name.length<2||name.length>10){
$("#register-username").removeClass("form-control is-valid")
$("#register-username").addClass("form-control is-invalid");
flagName=false;
}else{
$("#register-username").removeClass("form-control is-invalid")
$("#register-username").addClass("form-control is-valid");
flagName=true;
}
})
/*验证密码*/
$("#register-password").change(function(){
passWord=$("#register-password").val();
if(passWord.length<6||passWord.length>18){
$("#register-password").removeClass("form-control is-valid")
$("#register-password").addClass("form-control is-invalid");
flagPas=false;
}else{
$("#register-password").removeClass("form-control is-invalid")
$("#register-password").addClass("form-control is-valid");
flagPas=true;
}
})
/*验证确认密码*/
$("#register-passwords").change(function(){
passWords=$("#register-passwords").val();
if((passWord!=passWords)||(passWords.length<6||passWords.length>18)){
$("#register-passwords").removeClass("form-control is-valid")
$("#register-passwords").addClass("form-control is-invalid");
flagPass=false;
}else{
$("#register-passwords").removeClass("form-control is-invalid")
$("#register-passwords").addClass("form-control is-valid");
flagPass=true;
}
})
$("#regbtn").click(function(){
if(flagName&&flagPas&&flagPass){
localStorage.setItem("name",name);
localStorage.setItem("passWord",passWord);
location="login.html"
}else{
if(!flagName){
$("#register-username").addClass("form-control is-invalid");
}
if(!flagPas){
$("#register-password").addClass("form-control is-invalid");
}
if(!flagPass){
$("#register-passwords").addClass("form-control is-invalid");
}
}
})
})
script>
body>
html>编写Mapper接口
代码语言：javascript复制package com.mapper;
import com.pojo.User;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface UserMapper {
void save(User user);
User findByName(String name);
}编写Mapper.xml（一定要注意namespace的值和Mapper的名字要相同）
代码语言：javascript复制<mapper namespace="com.mapper.UserMapper">
<insert id="save" parameterType="com.pojo.User" useGeneratedKeys="true" keyProperty="id">
insert into t_user values (#{id},#{name},#{password},#{status},#{regtime},#{role})
insert>
<select id="findByName" parameterType="string" resultType="com.pojo.User">
select * from t_user where name = #{name}
select>
mapper>编写Service接口
代码语言：javascript复制package com.service;
import com.pojo.User;
public interface UserService {
void register(User user);
User login (User user);
}编写ServiceImpl
代码语言：javascript复制package com.service.impl;
import com.mapper.UserMapper;
import com.pojo.User;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.Date;
@Service
public class UserServiceImpl implements UserService {
@Autowired
UserMapper userMapper;
@Override
public void register(User user) {
User u = userMapper.findByName(user.getName());
if (u!=null){
throw new RuntimeException("当前用户名已被注册");
}else {
user.setRegtime(new Date());
user.setStatus("激活");
userMapper.save(user);
}
}
@Override
public User login(User user) {
User u=userMapper.findByName(user.getName());
if (u!=null){
if (u.getPassword().equals(user.getPassword())){
return u;
}else {
throw new RuntimeException("密码输入错误");
}
}
throw new RuntimeException("用户名输入错误，请从新输入");
}
}最后就是到了Controller的时候了
代码语言：javascript复制package com.controller;
import com.Result.Result;
import com.mapper.UserMapper;
import com.pojo.User;
import com.service.UserService;
import com.utils.VerifyCodeUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
UserService userService;
// 用户退出
@RequestMapping("logout")
public String logout(HttpSession session){
session.invalidate();
return "redirect:/back/login.jsp";
}
@RequestMapping("login")
@ResponseBody
public Result login(String code,User user,HttpSession session){
Result result =new Result();
// 取出验证码
String imagecode = (String) session.getAttribute("code");
try {
if (imagecode.equalsIgnoreCase(code)){
User u = userService.login(user);
session.setAttribute("user",u);//把用户存到session中
result.setMsg("登陆成功");
result.setStatue(true);
return result;
}
throw new RuntimeException("验证码输入错误！！");
}catch (Exception e){
e.printStackTrace();
result.setStatue(false);
result.setMsg(e.getMessage());
}
return result;
}
@RequestMapping("register")
@ResponseBody
public Result register(User user) {
Result result = new Result();
try {
userService.register(user);
result.setMsg("注册成功");
result.setStatue(true);
return result;
} catch (Exception e) {
e.printStackTrace();
result.setStatue(false);
result.setMsg(e.getMessage());
return result;
}
}
// 生成验证码
@RequestMapping("getImage")
public void getImage(HttpSession session, HttpServletResponse response) throws IOException {
// 1.获取随机数
String code = VerifyCodeUtils.generateVerifyCode(4);//获取4位随机数
// 2.将数字存入session中
session.setAttribute("code", code);
// 3.生成验证码图片
VerifyCodeUtils.outputImage(120, 43, response.getOutputStream(), code);
}
}c.跳转首页（略丑，轻喷）
头部jsp
代码语言：javascript复制<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"/>
<script src="${pageContext.request.contextPath}/back/statics/js/jquery-1.8.3.min.js"></script>
<body >
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#">班级管理系统
<small>V1.0</small>
</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<c:if test="${sessionScope.user!=null}">
<li><a href="javascript:;">欢迎: <span class="text-danger">${sessionScope.user.name}</span></a></li>
<a href="${pageContext.request.contextPath}/user/logout" target="_top" type="button"
class="btn btn-danger navbar-btn">退出</a>
</c:if>
<c:if test="${sessionScope.user==null}">
<li><a href="javascript:;"><span class="text-info">您当前还是访客身份,赶紧去登录吧~~</span></a></li>
<a href="${pageContext.request.contextPath}/back/login.jsp" target="_top" type="button"
class="btn btn-primary navbar-btn">登录</a>
</c:if>
</ul>
</div>
</div>
</nav>
</body>菜单jsp
代码语言：javascript复制<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"/>
<script src="${pageContext.request.contextPath}/back/statics/js/jquery-1.8.3.min.js">script>
<style>
body,ul,li{
background:#eee;
}
.list-group-item{
background: #eee;
}
style>
<body>
<ul class="list-group text-center" style="margin-top: 70px;">
<li class="list-group-item"><a href="${pageContext.request.contextPath}/student/findAll" target="content">学生管理a>
li>
<c:if test="${sessionScope.user.role=='admin'}">
<li class="list-group-item"><a href="${pageContext.request.contextPath}/group/findAll" target="content">小组管理a>
li>
<li class="list-group-item"><a href="${pageContext.request.contextPath}/clazz/findAll" target="content">班级管理a>
li>
<li class="list-group-item"><a href="${pageContext.request.contextPath}/tag/findAll" target="content">标签管理a>
li>
<li class="list-group-item"><a href="${pageContext.request.contextPath}/city/findAll" target="content">城市管理a>
li>
c:if>
ul>
body>主页jsp
代码语言：javascript复制<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css"/>
<div class="jumbotron">
<div class="container">
<h1>Hello, world!h1>
<p>This is a simple hero unit, a simple jumbotron-style component for calling extra attention to featured
content or informatio...p>
<p><a class="btn btn-primary btn-lg" href="#" role="button">Learn morea>p>
<p>磁盘使用率:(40%)p>
<div class="progress">
<div class="progress-bar progress-bar-success progress-bar-striped" role="progressbar" aria-valuenow="40"
aria-valuemin="0" aria-valuemax="100" style="width: 40%">
<span class="sr-only">40% Complete (success)span>
div>
div>
<p>内存使用率:(20%)p>
<div class="progress">
<div class="progress-bar progress-bar-info progress-bar-striped" role="progressbar" aria-valuenow="20"
aria-valuemin="0" aria-valuemax="100" style="width: 20%">
<span class="sr-only">20% Completespan>
div>
div>
<p>cpu使用率:(60%)p>
<div class="progress">
<div class="progress-bar progress-bar-warning progress-bar-striped" role="progressbar" aria-valuenow="60"
aria-valuemin="0" aria-valuemax="100" style="width: 60%">
<span class="sr-only">60% Complete (warning)span>
div>
div>
<p>数据库使用率:(80%)p>
<div class="progress">
<div class="progress-bar progress-bar-danger progress-bar-striped" role="progressbar" aria-valuenow="80"
aria-valuemin="0" aria-valuemax="100" style="width: 80%">
<span class="sr-only">80% Complete (danger)span>
div>
div>
<div class="row" style="margin-top: 20px;">
<div class="col-sm-6 col-md-4">
<div class="thumbnail">
<%--<img src="${pageContext.request.contextPath}/back/statics/images/home.jpeg" >--%>
<div class="caption">
<h3>班级管理系统V1.0h3>
div>
div>
div>
<div class="col-sm-6 col-md-4">
<div class="thumbnail">
<%--<img src="${pageContext.request.contextPath}/back/statics/images/home.jpeg" >--%>
<div class="caption">
<h3>班级管理系统V1.0h3>
div>
div>
div>
<div class="col-sm-6 col-md-4">
<div class="thumbnail">
<img src="${pageContext.request.contextPath}/back/statics/images/home.jpeg" >
<div class="caption">
<h3>班级管理系统V1.0h3>
div>
div>
div>
div>
div>
div>主页引用
代码语言：javascript复制<%@page contentType="text/html; UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Documenttitle>
head>
<frameset rows="50px,*" border="1px" borderColor="black" scrolling="no" noresize="noresize">
<%--引入标题--%>
<frame src="${pageContext.request.contextPath}/back/main/head.jsp">
<frameset cols="200px,*">
<frame src="${pageContext.request.contextPath}/back/main/menu.jsp">
<%--中心布局--%>
<frame src="${pageContext.request.contextPath}/back/main/home.jsp" name="content">
frameset>
frameset>
html>6.结语
day01就结束了，简单的写一个注册和登陆功能，明天会开始正式进入业务实现功能和编码，如果想获取源码的话可以移步我的码云，不做白嫖党（坏笑），喜欢的小朋友可以给一个start，我会一直继续更新这个博客的
码云地址：https://gitee.com/XiaoLin_Java/student_system
