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springboot+thymeleaf+druid+mybatis 多模块实现用户登录功能

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【字号：大中小】日期：2023-05-06 08:50:15浏览：4作者：猪猪

项目代码：https://github.com/bruceq/supermarket

项目结构：

依赖关系：

common:公共层，无依赖

dao:数据层，依赖common

service：服务层，依赖dao、common

web：应用层，依赖dao、common、service

注：启动类在web层中

父依赖pom

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd'> <modelVersion>4.0.0</modelVersion> <modules> <module>web</module> <module>dao</module> <module>service</module> <module>common</module> </modules> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.5.RELEASE</version>  <relativePath/>  </parent> <groupId>com.loan</groupId> <artifactId>supermarket</artifactId> <version>0.0.1-SNAPSHOT</version> <name>supermarket</name> <packaging>pom</packaging> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency>  <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency>  <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> <scope>runtime</scope> </dependency>  <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </dependency>  <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency>  <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency>  <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency>  <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency>  <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>5.1.2</version> </dependency>  <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.4</version> </dependency>  <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-collections4</artifactId> <version>4.2</version> </dependency>  <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.54</version> </dependency>  <dependency> <groupId>com.github.penggle</groupId> <artifactId>kaptcha</artifactId> <version>2.3.2</version> </dependency> </dependencies> </project>

web层pom依赖：

application.properties配置：

## 数据源配置spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=falsespring.datasource.username=rootspring.datasource.password=spring.datasource.driver-class-name=com.mysql.jdbc.Driver # 初始化时建立物理连接的个数spring.datasource.druid.initial-size=5# 最大连接池数量spring.datasource.druid.max-active=30# 最小连接池数量spring.datasource.druid.min-idle=5# 获取连接时最大等待时间，单位毫秒spring.datasource.druid.max-wait=60000# 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒spring.datasource.druid.time-between-eviction-runs-millis=60000# 连接保持空闲而不被驱逐的最小时间spring.datasource.druid.min-evictable-idle-time-millis=300000# 用来检测连接是否有效的sql，要求是一个查询语句spring.datasource.druid.validation-query=SELECT 1 FROM DUAL# 建议配置为true，不影响性能，并且保证安全性。申请连接的时候检测，如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效。spring.datasource.druid.test-while-idle=true# 申请连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能。spring.datasource.druid.test-on-borrow=false# 归还连接时执行validationQuery检测连接是否有效，做了这个配置会降低性能。spring.datasource.druid.test-on-return=false# 是否缓存preparedStatement，也就是PSCache。PSCache对支持游标的数据库性能提升巨大，比如说oracle。在mysql下建议关闭。spring.datasource.druid.pool-prepared-statements=true# 要启用PSCache，必须配置大于0，当大于0时，poolPreparedStatements自动触发修改为true。spring.datasource.druid.max-pool-prepared-statement-per-connection-size=50# 配置监控统计拦截的filters，去掉后监控界面sql无法统计spring.datasource.druid.filters=stat,wall# 通过connectProperties属性来打开mergeSql功能；慢SQL记录spring.datasource.druid.connection-properties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500# 合并多个DruidDataSource的监控数据spring.datasource.druid.use-global-data-source-stat=true # druid连接池监控spring.datasource.druid.stat-view-servlet.login-username=adminspring.datasource.druid.stat-view-servlet.login-password=123# 排除一些静态资源，以提高效率spring.datasource.druid.web-stat-filter.exclusions=*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/* # 端口配置server.port=8000 # mybatismybatis.type-aliases-package=com.loan.supermarket.mappermybatis.mapper-locations=classpath:mapping/*.xmlmybatis.configuration.map-underscore-to-camel-case=true # THYMELEAF (ThymeleafAutoConfiguration)spring.thymeleaf.prefix=classpath:/templates/spring.thymeleaf.suffix=.htmlspring.thymeleaf.mode=HTML5spring.thymeleaf.encoding=UTF-8# ;charset=<encoding> is added#spring.thymeleaf.content-type=text/html# set to false for hot refreshspring.thymeleaf.cache=false

前42行是对druid的基础配置，包括基础数据源配置，以及druid的基础参数；

47~50行是mybatis中对于mapper的xml的配置，便于项目启动后扫描到xml的相关文件，xml内写的是项目相关的sql。

45行指默认项目启动默认端口为8000。

52行~60行是thymeleaf的基础配置，thymeleaf是一种常见的模板引擎，相当于jsp这样的前台代码。

为了实现简单的登录功能，我们在controller中定义一些接口方法：

package com.loan.supermarket.web.controller; import com.google.code.kaptcha.impl.DefaultKaptcha;import com.loan.supermarket.mapper.JsonObject;import com.loan.supermarket.mapper.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.servlet.ModelAndView;import org.thymeleaf.util.StringUtils; import javax.imageio.ImageIO;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import java.awt.image.BufferedImage;import java.io.ByteArrayOutputStream;import java.util.ArrayList;import java.util.Date; @Controllerpublic class TemplateController { @RequestMapping('/index') public String index(Model model) { User user = new User(); user.setName('张三'); user.setId(1L); user.setTelephone('123456789'); user.setPassword('@#$%^&*()'); user.setRegisterTime(new Date()); user.setPopedom(1); User user1 = new User(); user1.setName('李四'); user1.setId(2L); user1.setTelephone('2222222'); user1.setPassword('最近是南风天'); user1.setRegisterTime(new Date()); user1.setPopedom(1); User user2 = new User(); user2.setName('王五'); user2.setId(3L); user2.setTelephone('33333333333'); user2.setPassword('妖姬'); user2.setRegisterTime(new Date()); user2.setPopedom(1); User user3 = new User(); user3.setName('赵六'); user3.setId(4L); user3.setTelephone('33333333333'); user3.setPassword('过河卒'); user3.setRegisterTime(new Date()); user3.setPopedom(0); ArrayList<User> list = new ArrayList<User>(); list.add(user); list.add(user1); list.add(user2); list.add(user3); model.addAttribute('users', list); return 'index'; } @RequestMapping('/login') public String login1() { return 'login'; } @PostMapping('/user_login') @ResponseBody public JsonObject<String> login(String username, String password, HttpServletRequest request) { JsonObject<String> obj = new JsonObject<String>(); HttpSession session = request.getSession(); if (!StringUtils.isEmpty(username) && !StringUtils.isEmpty(password)) { obj.setCode('0'); User user = new User(); user.setName(username); session.setAttribute('loginUser', user); return obj; } obj.setCode('1'); obj.setMessage('用户名或密码错误'); return obj; } @Autowired private DefaultKaptcha captchaProducer; /** * 获取验证码的请求路径 * @param httpServletRequest * @param httpServletResponse * @throws Exception */ @RequestMapping('/defaultKaptcha') public void defaultKaptcha(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception{ byte[] captchaChallengeAsJpeg = null; ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream(); try { //生产验证码字符串并保存到session中 String createText = captchaProducer.createText(); httpServletRequest.getSession().setAttribute('vrifyCode', createText); //使用生产的验证码字符串返回一个BufferedImage对象并转为byte写入到byte数组中 BufferedImage challenge = captchaProducer.createImage(createText); ImageIO.write(challenge, 'jpg', jpegOutputStream); } catch (IllegalArgumentException e) { httpServletResponse.sendError(HttpServletResponse.SC_NOT_FOUND); return; } //定义response输出类型为image/jpeg类型，使用response输出流输出图片的byte数组 captchaChallengeAsJpeg = jpegOutputStream.toByteArray(); httpServletResponse.setHeader('Cache-Control', 'no-store'); httpServletResponse.setHeader('Pragma', 'no-cache'); httpServletResponse.setDateHeader('Expires', 0); httpServletResponse.setContentType('image/jpeg'); ServletOutputStream responseOutputStream =httpServletResponse.getOutputStream(); responseOutputStream.write(captchaChallengeAsJpeg); responseOutputStream.flush(); responseOutputStream.close(); } /** * 验证的方法 * @param httpServletRequest * @param httpServletResponse * @return */ @RequestMapping('/imgvrifyControllerDefaultKaptcha') public ModelAndView imgvrifyControllerDefaultKaptcha(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse){ ModelAndView andView = new ModelAndView(); String captchaId = (String) httpServletRequest.getSession().getAttribute('vrifyCode'); String parameter = httpServletRequest.getParameter('vrifyCode'); System.out.println('Session vrifyCode '+captchaId+' form vrifyCode '+parameter); if (!captchaId.equals(parameter)) { andView.addObject('info', '错误的验证码'); andView.setViewName('index'); } else { andView.addObject('info', '登录成功'); andView.setViewName('success'); } return andView; }}

搭配前台的代码一起分析：

<!DOCTYPE html><html xmlns:th='http://www.thymeleaf.org'><head> <title>显示学生信息</title> <meta charset='UTF-8'/> <meta name='viewport' content='width=device-width, initial-scale=1'/> <link th:href='https://www.haobala.com/bcjs/@{/bootstrap/bootstrap.css}' href='https://www.haobala.com/static/bootstrap/bootstrap.css' rel='stylesheet'/> <link th:href='https://www.haobala.com/bcjs/@{/bootstrap/bootstrap-theme.css}' href='https://www.haobala.com/static/bootstrap/bootstrap-theme.css' rel='stylesheet'/> <script th:src='https://www.haobala.com/bcjs/@{/js/jquery.min.js}' src='https://www.haobala.com/static/js/jquery.min.js'></script> <script th:src='https://www.haobala.com/bcjs/@{/js/bootstrap.min.js}' src='https://www.haobala.com/static/js/bootstrap.min.js'></script> <script type='text/javascript'> $(function () { $('#submit').click(function () {$.post('/user_login', $('#loginForm').serialize(), function (data) { if (data.code == '0') { window.location.href = 'https://www.haobala.com/index'; } else if (data.code == '1') { $('#tick').text(data.message).css('color', 'red'); }}) }); }); </script></head><body><div class='container'> <div class='row'> <form id='loginForm'> <div class='col-md-4'><div class='panel panel-primary'> <div class='panel-heading text-center'> <span class='panel-title'>学生信息</span> </div> <div class='form-group'> <label for='username' style='color: red'>账 号:</label> <div class='col-sm-8'> <input type='text' name='username' placeholder='请输入账号'> </div> </div> <div class='form-group'> <label for='password' style='color: red'>密 码:</label> <div class='col-sm-8'> <input type='password' name='password' placeholder='请输入密码'> </div> </div> <div class='form-group'> <label id='tick'> </label> </div> <div class='form-group'> <form action='imgvrifyControllerDefaultKaptcha'> <div class='col-sm-8'><input type='text' name='vrifyCode' /> </div> <img alt='验证码' onclick='this.src=’defaultKaptcha?d=’+new Date()*1' src='https://www.haobala.com/bcjs/defaultKaptcha'> </br> </form> </div> <div class='form-group'> <div class='col-sm-8'> <button type='button' class='btn btn-default'>登录</button> </div> </div> <div class='panel-footer text-right'> <span class='panel-title'>大侠工作室@2108</span> </div></div> </div> </form> </div></div></body></html>

在项目启动后，访问http://localhost:8000/login，进入到登录页面，首先加载必要的css和js资源，在填写好用户名、密码后，点击登录，会执行user_login的接口方法，简单的对用户进行校验，即可进入首页。

其次要说的是这个项目中，添加了验证码的功能，使用了kaptcha的依赖。在登录界面中，增加了验证码的显示，点击验证码图片后，可以切换验证码。

登录界面

springboot+thymeleaf+druid+mybatis 多模块实现用户登录功能

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