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首页 > 软件编程 > java > SpringBoot整合Thymeleaf

SpringBoot整合Thymeleaf小项目及详细流程

作者：程序员小徐同学

这篇文章主要介绍了SpringBoot整合Thymeleaf小项目,本项目使用SpringBoot开发，jdbc5.1.48，主要涉及到Mybatis的使用，Thymeleaf的使用，用户密码加密，验证码的设计，图片的文件上传（本文件上传到本地，没有传到数据库）登录过滤，需要的朋友可以参考下

1.项目简绍

本项目使用SpringBoot开发，jdbc5.1.48 Mybatis 源码可下载

其中涉及功能有：Mybatis的使用，Thymeleaf的使用，用户密码加密，验证码的设计，图片的文件上传（本文件上传到本地，没有传到数据库）登录过滤等

用户数据库

在这里插入图片描述

员工数据库设计

在这里插入图片描述

基本的增删改查都有

2.设计流程

# Getting Started

### Reference Documentation
For further reference, please consider the following sections:
* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)
* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.6.4/maven-plugin/reference/html/)
* [Create an OCI image](https://docs.spring.io/spring-boot/docs/2.6.4/maven-plugin/reference/html/#build-image)
* [Spring Web](https://docs.spring.io/spring-boot/docs/2.6.4/reference/htmlsingle/#boot-features-developing-web-applications)
* [MyBatis Framework](https://mybatis.org/spring-boot-starter/mybatis-spring-boot-autoconfigure/)
* [JDBC API](https://docs.spring.io/spring-boot/docs/2.6.4/reference/htmlsingle/#boot-features-sql)
* [Thymeleaf](https://docs.spring.io/spring-boot/docs/2.6.4/reference/htmlsingle/#boot-features-spring-mvc-template-engines)
### Guides
The following guides illustrate how to use some features concretely:
* [Building a RESTful Web Service](https://spring.io/guides/gs/rest-service/)
* [Serving Web Content with Spring MVC](https://spring.io/guides/gs/serving-web-content/)
* [Building REST services with Spring](https://spring.io/guides/tutorials/bookmarks/)
* [MyBatis Quick Start](https://github.com/mybatis/spring-boot-starter/wiki/Quick-Start)
* [Accessing Relational Data using JDBC with Spring](https://spring.io/guides/gs/relational-data-access/)
* [Managing Transactions](https://spring.io/guides/gs/managing-transactions/)
* [Handling Form Submission](https://spring.io/guides/gs/handling-form-submission/)
## 项目说明
本项目使用SpringBoot开发，jdbc5.1.48
### 1.数据库信息
创建两个表，管理员表user和员工表employee
### 2.项目流程
1.springboot集成thymeleaf
	1).引入依赖
		<!--使用thymelaf-->
		<dependency>
		  <groupId>org.springframework.boot</groupId>
		  <artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
	
	2).配置thymeleaf模板配置
		spring:
		  thymeleaf:
		    cache: false  # 关闭缓存
		    prefix: classpath:/templates/ #指定模板位置
		    suffix: .html #指定后缀
	3).开发controller跳转到thymeleaf模板
		@Controller
		@RequestMapping("hello")
		public class HelloController {
		    @RequestMapping("hello")
		    public String hello(){
		        System.out.println("hello ok");
		        return "index";  // templates/index.html
		    }
		}
=================================================================
2.thymeleaf 语法使用
	1).html使用thymeleaf语法 必须导入thymeleaf的头才能使用相关语法
		namespace: 命名空间  
		<html lang="en" xmlns:th="http://www.thymeleaf.org">
	2).在html中通过thymeleaf语法获取数据
================================================================
###3.案例开发流程
​	
	需求分析: 分析这个项目含有哪些功能模块
		用户模块:
			注册
			登录
			验证码
			安全退出
			真是用户
		员工模块:
			添加员工+上传头像
			展示员工列表+展示员工头像
			删除员工信息+删除员工头像
			更新员工信息+更新员工头像
	库表设计(概要设计): 1.分析系统有哪些表  2.分析表与表关系  3.确定表中字段(显性字段 隐性字段(业务字段))
		2张表 
			1.用户表 user
				id username realname password gender
			2.员工表 employee
				id name salary birthday  photo
		创建一个库: ems-thymeleaf
	详细设计:
		省略
	编码(环境搭建+业务代码开发)
		1.创建一个springboot项目 项目名字: ems-thymeleaf
		2.修改配置文件为 application.yml  pom.xml  2.5.0
		3.修改端口   项目名: ems-thymeleaf
		4.springboot整合thymeleaf使用
			a.引入依赖
			b.配置文件中指定thymeleaf相关配置
			c.编写控制器测试
		5.springboot整合mybatis
				mysql、druid、mybatis-springboot-stater
			b.配置文件中 
		6.导入项目页面
			static  存放静态资源
			templates 目录 存放模板文件
	测试
	上线部署
	维护
	发版
======================================================================

3.项目展示

在这里插入图片描述

 

在这里插入图片描述

在这里插入图片描述

在这里插入图片描述

4.主要代码

1.验证码的生成

package com.xuda.springboot.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;
/**
 * @author ：程序员徐大大
 * @description：TODO
 * @date ：2022-03-20 19:42
 */
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 sources   验证码字符源
    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
     * @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 os
    public static String outputVerifyImage(int w, int h, OutputStream os, int verifySize) throws IOException{
        outputImage(w, h, os, verifyCode);
     * 生成指定验证码图像文件
     * @param code
    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
    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();
            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;
        int frames = 20;
        int phase = 7;
        for (int i = 0; i < w1; i++) {
            g.copyArea(i, 0, 1, h1, 0, (int) d);
                g.drawLine(i, (int) d, i, 0);
                g.drawLine(i, (int) d + h1, i, h1);
}

2.userController的控制层设计

package com.xuda.springboot.controller;

import com.xuda.springboot.pojo.User;
import com.xuda.springboot.service.UserService;
import com.xuda.springboot.utils.VerifyCodeUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
/**
 * @author ：程序员徐大大
 * @description：TODO
 * @date ：2022-03-20 20:06
 */
@Controller
@RequestMapping(value = "user")
public class UserController {
    //日志
    private static final Logger log = LoggerFactory.getLogger(UserController.class);
    private UserService userService;
    @Autowired
    public UserController(UserService userService) {
        this.userService = userService;
    }
    @RequestMapping(value = "/generateImageCode")
    public void generateImageCode(HttpSession session,HttpServletResponse response) throws IOException {
        //随机生成四位随机数
        String code = VerifyCodeUtils.generateVerifyCode(4);
        //保存到session域中
        session.setAttribute("code",code);
        //根据随机数生成图片，reqponse响应图片
        response.setContentType("image/png");
        ServletOutputStream os = response.getOutputStream();
        VerifyCodeUtils.outputImage(130,60,os,code);
    /*
    用户注册
     */
    @RequestMapping(value = "/register")
    public String register(User user, String code, HttpSession session, Model model){
        log.debug("用户名：{}，真实姓名：{},密码：{},性别：{},",user.getUsername(),user.getRealname(),user.getPassword(),user.getGender());
        log.debug("用户输入的验证码：{}",code);
        try{
            //判断用户输入验证码和session中的验证码是否一样
            String sessioncode = session.getAttribute("code").toString();
           if(!sessioncode.equalsIgnoreCase(code)) {
               throw new RuntimeException("验证码输入错误");
           }
            //注册用户
            userService.register(user);
        }catch (RuntimeException e){
            e.printStackTrace();
            return "redirect:/register";//注册失败返回注册页面
        }
        return  "redirect:/login"; //注册成功跳转到登录页面
    /**
     * 用户登录
    @RequestMapping(value = "login")
    public String login(String username,String password,HttpSession session){
        log.info("本次登录用户名：{}",username);
        log.info("本次登录密码：{}",password);
        try {
            //调用业务层进行登录
            User user = userService.login(username, password);
            //保存Session信息
            session.setAttribute("user",user);
        } catch (Exception e) {
            return "redirect:/login";//登录失败回到登录页面
        return "redirect:/employee/lists";//登录成功跳转到查询页面
    //退出
    @RequestMapping(value = "/logout")
    public String logout(HttpSession session) {
        session.invalidate();//session失效
        return "redirect:/login";//跳转到登录页面
}

3.employeeController控制层的代码

package com.xuda.springboot.controller;

import com.xuda.springboot.pojo.Employee;
import com.xuda.springboot.service.EmployeeService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Service;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
/**
 * @author ：程序员徐大大
 * @description：TODO
 * @date ：2022-03-21 13:44
 */
@Controller
@RequestMapping(value = "employee")
public class EmployeeController {
    //打印日志
    private static final Logger log = LoggerFactory.getLogger(EmployeeController.class);
    @Value("${photo.file.dir}")
    private String realpath;
    private EmployeeService employeeService;
    @Autowired
    public EmployeeController(EmployeeService employeeService) {
        this.employeeService = employeeService;
    }
    //查询信息
  @RequestMapping(value = "/lists")
    public  String lists(Model model){
        log.info("查询所有员工信息");
        List<Employee> employeeList = employeeService.lists();
        model.addAttribute("employeeList",employeeList);
        return "emplist";
    /**
     * 根据id查询员工详细信息
     *
     * @param id
     * @param model
     * @return
     */
    @RequestMapping(value = "/detail")
    public String detail(Integer id, Model model) {
        log.debug("当前查询员工id: {}", id);
        //1.根据id查询一个
        Employee employee = employeeService.findById(id);
        model.addAttribute("employee", employee);
        return "updateEmp";//跳转到更新页面
    //上传头像方法
    private String uploadPhoto(MultipartFile img, String originalFilename) throws IOException {
        String fileNamePrefix = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date());
        String fileNameSuffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String newFileName = fileNamePrefix + fileNameSuffix;
        img.transferTo(new File(realpath, newFileName));
        return newFileName;
     * 保存员工信息
     * 文件上传: 1.表单提交方式必须是post  2.表单enctype属性必须为 multipart/form-data
    @RequestMapping(value = "/save")
    public String save(Employee employee, MultipartFile img) throws IOException {
        log.debug("姓名:{}, 薪资:{}, 生日:{} ", employee.getNames(), employee.getSalary(), employee.getBirthday());
        String originalFilename = img.getOriginalFilename();
        log.debug("头像名称: {}", originalFilename);
        log.debug("头像大小: {}", img.getSize());
        log.debug("上传的路径: {}", realpath);
        log.debug("第一次--》员工信息:{}",employee.getNames());
        //1.处理头像的上传&修改文件名称
        String newFileName = uploadPhoto(img, originalFilename);
        //2.保存员工信息
        employee.setPhoto(newFileName);//保存头像名字
        employeeService.save(employee);
        return "redirect:/employee/lists";//保存成功跳转到列表页面
     * 更新员工信息
     * @param employee
     * @param img
    @RequestMapping(value = "/update")
    public String update(Employee employee, MultipartFile img) throws IOException {
        log.debug("更新之后员工信息: id:{},姓名:{},工资:{},生日:{},", employee.getId(), employee.getNames(), employee.getSalary(), employee.getBirthday());
        //1.判断是否更新头像
        boolean notEmpty = !img.isEmpty();
        log.debug("是否更新头像: {}", notEmpty);
        if (notEmpty) {
            //1.删除老的头像 根据id查询原始头像
            String oldPhoto = employeeService.findById(employee.getId()).getPhoto();
            File file = new File(realpath, oldPhoto);
            if (file.exists()) file.delete();//删除文件
            //2.处理新的头像上传
            String originalFilename = img.getOriginalFilename();
            String newFileName = uploadPhoto(img, originalFilename);
            //3.修改员工新的头像名称
            employee.setPhoto(newFileName);
        }
        //2.没有更新头像直接更新基本信息
        employeeService.update(employee);
        return "redirect:/employee/lists";//更新成功,跳转到员工列表
     * 删除员工信息
    @RequestMapping(value = "/delete")
    public String delete(Integer id){
        log.debug("删除的员工id: {}",id);
       String photo = employeeService.findById(id).getPhoto();
        employeeService.delete(id);
        //2.删除头像
       File file = new File(realpath, photo);
        if (file.exists()) file.delete();
        return "redirect:/employee/lists";//跳转到员工列表
}

4.前端控制配置类

package com.xuda.springboot.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
 * @author ：程序员徐大大
 * @description：TODO
 * @date ：2022-03-20 20:49
 */
@Configuration
public class MvcConfig implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("redirect:/login");
        registry.addViewController("login").setViewName("login");
        registry.addViewController("login.html").setViewName("login");
        registry.addViewController("register").setViewName("regist");
        registry.addViewController("addEmp").setViewName("addEmp");
    }
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**")
                .excludePathPatterns("/register","/user/login","/css/**","/js/**","/img/**","/user/register","/login","/login.html");
}

5.过滤器

package com.xuda.springboot.config;

import com.xuda.springboot.controller.UserController;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * @author ：程序员徐大大
 * @description：TODO
 * @date ：2022-03-21 20:17
 */
@Configuration
public class LoginHandlerInterceptor implements HandlerInterceptor {
    private static final Logger log = LoggerFactory.getLogger(LoginHandlerInterceptor.class);
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       log.info("session+=》{}",request.getSession().getAttribute("user"));
        //登录成功后，应该有用户得session
        Object loginuser = request.getSession().getAttribute("user");
        if (loginuser == null) {
            request.setAttribute("loginmsg", "没有权限请先登录");
            request.getRequestDispatcher("/login.html").forward(request, response);
            return false;
        } else {
        return true;
        }
    }
}

6.yml配置

#关闭thymeleaf模板缓存
spring:
  thymeleaf:
    cache: false
    prefix: classpath:/templates/ #指定模板位置
    suffix: .html #指定后缀名
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/ssmbuild?characterEncoding=UTF-8
    username: root
    password:
  web:
    resources:
      static-locations: classpath:/static/,file:${photo.file.dir} #暴露哪些资源可以通过项目名访问
mybatis:
  mapper-locations: classpath:mapper/*.xml
  type-aliases-package: com.xuda.springboot.pojo
#Mybatis配置
#日志配置
logging:
  level:
    root: info
    com.xuda: debug
#指定文件上传的位置
photo:
  file:
    dir: E:\IDEA_Project\SpringBoot_Demo_Plus\IDEA-SpringBoot-projectes\010-springboot-ems-thymeleaf\photo

7.文章添加页面展示

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns:th="http://www.thymealf.org">
<head>
	<title>添加员工信息</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<link rel="stylesheet" type="text/css"
		  href="css/style.css" />
</head>

<body>
<div id="wrap">
	<div id="top_content">
		<div id="header">
			<div id="rightheader">
				<p>
					2022/03/21
					<br />
				</p>
			</div>
			<div id="topheader">
				<h1 id="title">
					<a href="#">main</a>
				</h1>
			<div id="navigation">
		</div>
		<div id="content">
			<p id="whereami">
			</p>
			<h1>
				添加员工信息:
			</h1>
			<form th:action="@{/employee/save}" method="post" enctype="multipart/form-data">
				<table cellpadding="0" cellspacing="0" border="0"
					   class="form_table">
					<tr>
						<td valign="middle" align="right">
							姓名:
						</td>
						<td valign="middle" align="left">
							<input type="text" class="inputgri" name="names" />
					</tr>
							头像:
							<input type="file" width="" name="img" />
							工资:
							<input type="text" class="inputgri" name="salary" />
							生日:
							<input type="text" class="inputgri" name="birthday" />
				</table>
					<input type="submit" class="button" value="确认添加" />
					<input type="submit" class="button" value="返回列表" />
			</form>
	</div>
	<div id="footer">
		<div id="footer_bg">
			1375595011@qq.com
</div>
</body>
</html>

8.POM.xml配置类

<?xml version="1.0" encoding="UTF-8"?>
<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>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xuda.springboot</groupId>
    <artifactId>010-springboot-ems-thymeleaf</artifactId>
    <version>1.0.0</version>
    <name>010-springboot-ems-thymeleaf</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <!--jdbc驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.48</version>
        </dependency>
            <!--thymeleaf启动依赖-->
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <!--springboot启动依赖-->
            <artifactId>spring-boot-starter-web</artifactId>
            <!--mybatis整合springboot-->
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.2</version>

            <!--lombok-->
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
            <!--springboot测试启动依赖-->
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

9.employeeMapper配置类

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xuda.springboot.dao.EmployeeMapper">
    <select id="lists"  resultType="Employee">
        select id,names,salary,birthday,photo from employee;
    </select>
    <!--<insert id="save" parameterType="User" useGeneratedKeys="true" keyProperty="id">
        insert into USER  values (#{id},#{username},#{realname},#{password},#{gender});
    </insert>-->

    <!--save-->
    <insert id="save" parameterType="Employee" useGeneratedKeys="true" keyProperty="id">
        insert into `employee` values (#{id},#{names},#{salary},#{birthday},#{photo})
    </insert>
    <!--findById-->
    <select id="findById" parameterType="Integer" resultType="Employee">
        select id,names,salary,birthday,photo from employee
        where id = #{id}
    <!--update-->
    <update id="update" parameterType="Employee" >
        update `employee` <set>
         <if test="names != null">
         names=#{names},
         </if>
        <if test="salary != null">
        salary=#{salary},
        </if>
        <if test="birthday != null">
        birthday=#{birthday},
        <if test="photo != null">
        names=#{photo},
        </set>
    </update>
    <!--delete-->
    <delete id="delete" parameterType="Integer">
        delete from `employee` where id = #{id}
    </delete>
</mapper>

10.UserMapper配置类

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xuda.springboot.dao.UserMapper">
    <select id="findByUserName" parameterType="String" resultType="User">
        select id,username,realname,password,gender from user where username = #{username};
    </select>
    <insert id="save" parameterType="User" useGeneratedKeys="true" keyProperty="id">
        insert into USER  values (#{id},#{username},#{realname},#{password},#{gender});
    </insert>
</mapper>

5.项目下载gitee

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