SpringBoot项目登录与主页面（从建项目开始详细教程）

一、项目准备阶段🍉

1.创建SpringBoot项目🥝

2.引入需要的依赖🥝

<?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>2.3.12.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>SpringBoot6</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>SpringBoot6</name>
    <description>SpringBoot6</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

        <!--swagger的依赖引入-->
        <dependency>
            <groupId>io.github.jianzhichun</groupId>
            <artifactId>spring-boot-starter-swagger2</artifactId>
            <version>0.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>swagger-bootstrap-ui</artifactId>
            <version>1.9.6</version>
        </dependency>

        <!--引入mp-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.2</version>
        </dependency>
        <!--mp代码生成器的依赖-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-generator</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity-engine-core</artifactId>
            <version>2.3</version>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
            <version>2.3.29</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </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>

3.添加配置文件🥝

application.properties

#数据源信息
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
#characterEncoding防止添加数据时出现乱码情况
spring.datasource.url=jdbc:mysql://localhost:3306/qy165-2?serverTimezone=Asia/Shanghai&characterEncoding=UTF8
spring.datasource.username=root
spring.datasource.password=123456

#指定mp映射文件路径  classpath编译后的路径
mybatis-plus.mapper-locations=classpath:/mapper/*.xml
#控制台打印sql日志
mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

前端需要的静态配置文件

4.编辑Swagger配置文件🥝

package com.lzq.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

@Configuration //表示类似与配置文件
public class SwaggerConfig {

    @Bean //加在方法上，表示吧方法的返回结果交于spring容器来管理该对象. 里面封装了接口文档的信息，
    public Docket docket(){
        Docket docket=new Docket(DocumentationType.SWAGGER_2)
                .groupName("阿娇")
                .apiInfo(getInfo())
                .select()
                //只为com.lzq.controller包下的类生成接口文档
                .apis(RequestHandlerSelectors.basePackage("com.lzq.system.controller"))
                .build();
        return docket;
    }

    private ApiInfo getInfo(){
        Contact DEFAULT_CONTACT = new Contact("阿娇", "http://www.jd.com", "110@qq.com");
        ApiInfo apiInfo= new ApiInfo("员工管理系统API文档", "员工管理系统API文档",
                "1.5", "localhost:8081/doc.html", DEFAULT_CONTACT, "AAA志远网络有限公司", "http://www.aaa.com");
        return apiInfo;
    }
}

5.创建代码生成器🥝

代码生成器使用的前提：
1.配置有mp代码生成器的依赖
2.配置有swagger文件
3.连接了数据库

CodeGenerator

package com.lzq;


import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

// 演示例子，执行 main 方法控制台输入模块表名回车自动生成对应项目目录中
public class CodeGenerator {
    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        gc.setOutputDir( "D:\\xxcl\\idea\\SpringBoot6/src/main/java");
        gc.setAuthor("lzq");
        gc.setOpen(false);
        gc.setSwagger2(true); //实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl("jdbc:mysql://localhost:3306/qy165-2?characterEncoding=utf8&serverTimezone=Asia/Shanghai");
        // dsc.setSchemaName("public");
        dsc.setDriverName("com.mysql.cj.jdbc.Driver");
        dsc.setUsername("root");
        dsc.setPassword("123456");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName("system");
        pc.setParent("com.lzq"); //com.aaa.user
        mpg.setPackageInfo(pc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模板引擎是 velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return "D:\\xxcl\\idea\\SpringBoot6" + "/src/main/resources/mapper/"
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }

            //  \--转义字符 (\\window系统的路径  /linux系统中  但是现在可以混用)
        });
        /*
        cfg.setFileCreate(new IFileCreate() {
            @Override
            public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                // 判断自定义文件夹是否需要创建
                checkDir("调用默认方法创建的目录，自定义目录用");
                if (fileType == FileType.MAPPER) {
                    // 已经生成 mapper 文件判断存在，不想重新生成返回 false
                    return !new File(filePath).exists();
                }
                // 允许生成模板文件
                return true;
            }
        });
        */
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定义输出模板
        //指定自定义模板路径，注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();
//        templateConfig.setMapper("dao");

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel); //user_name===userName
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // 公共父类
        // 写于父类中的公共字段
        strategy.setInclude("acl_permission","acl_role","acl_role_permission","acl_user","acl_user_role");
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix("acl_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}

二、项目实施阶段🍉

1.目录🥝

2.编写前端登录页面🥝

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="/js/vue.js"></script>
    <script type="text/javascript" src="/js/index.js"></script>
    <script type="text/javascript" src="/js/axios.min.js"></script>
    <link rel="stylesheet" type="text/css" href="/css/index.css">
    <style>
        html, body, #app {
            height: 100%;
            margin: 0px;
            padding: 0px;
        }

        .login_container {
            background-image: url("../../images/bg.jpg");
            height: 100%;
        }

        .login_box {
            width: 450px;
            height: 300px;
            background: #fff;
            border-radius: 3px;
            position: absolute;
            left: 50%;
            top: 50%;
            box-shadow: 0 0 10px #ddd;
            transform: translate(-50%, -50%);
        }

        .login_box > .avatar_box {
            height: 130px;
            width: 130px;
            border: 1px solid #eee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 0 10px #ddd;
            position: absolute;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: #fff;
        }

        .login_box > .avatar_box > img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }

        .login_form {
            position: absolute;
            bottom: 0;
            width: 100%;
            padding: 0 20px;
            box-sizing: border-box;
        }

        .btns {
            display: flex;
            justify-content: flex-end;
        }

    </style>
</head>
<body>
<div id="app">
    <div class="login_container">
        <!-- 登录盒子  -->
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="/images/logo.jpg" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form :rules="loginRules" :model="loginForm" ref="LoginFormRef2" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input type="password" v-model="loginForm.password" prefix-icon="el-icon-lock"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLogin">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</div>

</body>
<script>
    var app = new Vue({
        el: "#app",
        data: {
            loginForm: {},
            loginRules: {},
        },
        methods: {
            login() {
                axios.post("/login/list", this.loginForm).then(result => {
                    if (result.data.code == 200) {
                        this.$message.success(result.data.msg)
                        window.location.href = "/views/main.html"
                    }else {
                        this.$message.error(result.data.msg)
                    }
                })
            },
            resetLogin() {

            },
        }
    })
</script>
</html>

3.编写前端需要的接口🥝

package com.lzq.system.controller;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.lzq.system.entity.User;
import com.lzq.system.service.IUserRoleService;
import com.lzq.system.service.IUserService;
import com.lzq.vo.LoginVo;
import com.lzq.vo.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpSession;

@RestController
@RequestMapping("/login")
public class LoginController {
    @Autowired
    private IUserService userService;

    @PostMapping("/list")
    public Result findAll(@RequestBody LoginVo loginVo, HttpSession session){
        QueryWrapper<User> wrapper = new QueryWrapper<>();
        wrapper.eq("username",loginVo.getUsername());
        wrapper.eq("password",loginVo.getPassword());
        User one = userService.getOne(wrapper);
        if (one!=null){
            session.setAttribute("user",one);
            return new Result(200,"登录成功",null);
        }
        return new Result(500,"登录失败",null);
    }
}

4.编写前端跳转主页面🥝

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="/js/vue.js"></script>
    <script type="text/javascript" src="/js/index.js"></script>
    <script type="text/javascript" src="/js/axios.min.js"></script>
    <link type="text/css" rel="stylesheet" href="/css/index.css">
    <style>
        html, body, #app {
            padding: 0px;
            margin: 0px;
            height: 100%;
        }

        .home-container {
            height: 100%;
        }

        .el-header {
            background-color: palegoldenrod;
            display: flex;
            justify-content: space-between;
            padding-left: 0px;
            align-items: center;
            color: white;
            font-size: 20px;

        }

        .el-header > div {
            display: flex;
            align-items: center;

        }

        .el-header > div > span {
            margin-left: 15px;
        }

        .el-aside {
            background-color: #333744;

        }

        .el-aside > .el-menu {
            border-right: none;
            font-size: 12px;
        }

        .el-main {
            background-color: #f1f1f1;
        }
    </style>
</head>
<body>
<div id="app">
    <el-container class="home-container">
        <el-header>
            头部
        </el-header>
        <el-container>
            <el-aside width="200px">
                <!-- 侧边栏菜单 -->
                <el-menu
                        background-color="#333744"
                        :unique-opened="true"
                        text-color="#fff"
                        active-text-color="#ffd04b"
                        router
                >
                    <!-- 一级菜单 index就是跳转路径-->
                    <el-submenu :index="first.id" v-for="first in leftMenu">
                        <!-- 一级菜单模板 -->
                        <template slot="title">
                            <!-- 文本 -->
                            <span :class="first.icon" style="font-size: 15px;">&nbsp;&nbsp;{{first.name}}</span>
                        </template>
                        <!-- 二级子菜单 -->
                        <!-- 二级子菜单 -->
                        <el-menu-item :index="second.path" v-for="second in first.children">
                            <!-- 二级菜单模板 -->
                            <template slot="title">
                                <!-- 图标 -->
                                <!-- 文本 -->
                                <span :class="second.icon" style="font-size: 15px;"
                                      @click="showContent(second.path,second.name)">&nbsp;&nbsp;{{second.name}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <el-main>
                主题
            </el-main>
        </el-container>
    </el-container>
</div>
</body>
<script>
    var app = new Vue({
        el: "#app",
        data: {
            leftMenu: [],
        },
        created() {
            this.getMenu()
        },
        methods: {
            getMenu() {
                axios.get("/system/permission/left").then(result=>{
                    if (result.data.code==200){
                        this.leftMenu=result.data.data;
                    }
                })
            },
        }

    })
</script>
</html>

5.编写跳转主页面侧边栏数据接口🥝

controller层

package com.lzq.system.controller;


import com.lzq.system.entity.Permission;
import com.lzq.system.entity.User;
import com.lzq.system.service.IPermissionService;
import com.lzq.vo.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.List;

/**
 * <p>
 * 权限 前端控制器
 * </p>
 *
 * @author lzq
 * @since 2023-06-20
 */
@RestController
@RequestMapping("/system/permission")
public class PermissionController {
    @Autowired
    private IPermissionService permissionService;

    @GetMapping("/left")
    public Result findAll(HttpSession session) {
        System.out.println("111111111111111");
        User user = (User) session.getAttribute("user");
        System.out.println(user);
        List<Permission> all = permissionService.findAll(user.getId());
        System.out.println(all);
        if (all != null) {
            return new Result(200, "查询菜单成功", all);
        } else {
            return new Result(500, "查询失败", null);
        }
    }

}

service层
PermissionServiceImpl

package com.lzq.system.service.impl;

import com.lzq.system.entity.Permission;
import com.lzq.system.mapper.PermissionMapper;
import com.lzq.system.service.IPermissionService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 * 权限 服务实现类
 * </p>
 *
 * @author lzq
 * @since 2023-06-20
 */
@Service
public class PermissionServiceImpl extends ServiceImpl<PermissionMapper, Permission> implements IPermissionService {
    @Autowired
    private PermissionMapper permissionMapper;

    @Override
    public List<Permission> findAll(String id) {
        List<Permission> all = permissionMapper.findAll(id);
        System.out.println(all);
        //查询一级菜单

        List<Permission> collect = all.stream().filter(item -> item.getPid().equals("1")).collect(Collectors.toList());
        System.out.println(collect+"二级菜单");
        //查询一级菜单下的二级菜单
        for (Permission f : collect) {
            ArrayList<Permission> permissions = new ArrayList<>();
            for (Permission t : all) {
                if (f.getId().equals(t.getPid())) {
                    permissions.add(t);
                }
            }
            f.setChildren(permissions);
        }

        return collect;
    }
}

mapper层
PermissionMapper.xml
文章来源地址https://www.toymoban.com/news/detail-771980.html

<?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.lzq.system.mapper.PermissionMapper">

    <select id="findAll" resultType="com.lzq.system.entity.Permission">
        select p.* from acl_user_role ur join acl_role_permission rp on ur.role_id=rp.role_id
                                         join acl_permission p on rp.permission_id=p.id
        where ur.user_id=#{userid} and p.type=1
    </select>
</mapper>

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