day1--项目搭建and内容管理模块

1. 项目搭建

1.1 创建父工程

1.1.1 创建xuecheng-plus-project工程

1.1.2 导入依赖

<?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>3.5.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <packaging>pom</packaging>

    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-parent</name>
    <description>xuecheng-plus-parent</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>2.0.1</version>
        </dependency>

        <!-- JWT依赖 -->
        <dependency>
            <groupId>io.jsonwebtoken</groupId>
            <artifactId>jjwt</artifactId>
            <version>0.12.3</version>
        </dependency>

        <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</artifactId>
        </dependency>

        <!--    redis-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!--    mysql-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.33</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
        </dependency>
        <!--    druid-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-3-starter</artifactId>
            <version>1.2.23</version>
        </dependency>
        <!--    lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!--    mybatis-plus-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
            <version>3.5.7</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</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>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>co.elastic.clients</groupId>
            <artifactId>elasticsearch-java</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

1.1.3 创建Base工程

1.1.4 导入依赖

<?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>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
<!--        <relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;-->
    <relativePath>../xuecheng-plus-parent</relativePath>
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-base</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-base</name>
    <description>xuecheng-plus-base</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</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-test</artifactId>-->
<!--            <scope>test</scope>-->
<!--        </dependency>-->
<!--    </dependencies>-->
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <!-- fastJson -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.76</version>
        </dependency>

        <!-- servlet Api 依赖 -->
<!--        <dependency>-->
<!--            <groupId>javax.servlet</groupId>-->
<!--            <artifactId>javax.servlet-api</artifactId>-->
<!--            <scope>provided</scope>-->
<!--        </dependency>-->

        <!-- 通用组件 -->
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.11</version>
        </dependency>
        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
<!--        <dependency>-->
<!--            <groupId>org.springframework.boot</groupId>-->
<!--            <artifactId>spring-boot-starter-validation</artifactId>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>org.springframework.boot</groupId>-->
<!--            <artifactId>spring-boot-starter-log4j2</artifactId>-->
<!--        </dependency>-->
<!--        &lt;!&ndash;根据扩展名取mimetype&ndash;&gt;-->
<!--        <dependency>-->
<!--            <groupId>com.j256.simplemagic</groupId>-->
<!--            <artifactId>simplemagic</artifactId>-->
<!--            <version>1.17</version>-->
<!--        </dependency>-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
        </dependency>
<!--        <dependency>-->
<!--            <groupId>com.google.zxing</groupId>-->
<!--            <artifactId>core</artifactId>-->
<!--            <version>3.3.3</version>-->
<!--        </dependency>-->

<!--        <dependency>-->
<!--            <groupId>com.google.zxing</groupId>-->
<!--            <artifactId>javase</artifactId>-->
<!--            <version>3.3.3</version>-->
<!--        </dependency>-->
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-parameter-names</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>3.0.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jdk8</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

1.1.5 创建连接数据库

使用Navicat使用192.168.101.65连接数据库，

2. 内容管理模块

2.1 需求分析

2.1.1 介绍

内容管理系统（content management system，CMS），是一种位于WEB前端（Web 服务器）和后端办公系统或流程（内容创作、编辑）之间的软件系统。内容的创作人员、编辑人员、发布人员使用内容管理系统来提交、修改、审批、发布内容。这里指的"内容"可能包括文件、表格、图片、数据库中的数据甚至视频等一切你想要发布到Internet、Intranet以及Extranet网站的信息。

本项目作为一个大型的在线教育平台，其内容管理模块主要对课程及相关内容进行管理，包括：课程的基本信息、课程图片、课程师资信息、课程的授课计划、课程视频、课程文档等内容的管理。

2.1.2 业务流程

课程查询的业务流程如下：

1、教学机构人员点击课程管理首先进入课程查询界面，如下：

2.在课程进行列表查询页面输入查询条件查询课程信息

当不输入查询条件时输入全部课程信息。

输入查询条件查询符合条件的课程信息。

约束：本教学机构查询本机构的课程信息。

整个流程分为前端、接口层、业务层三部分。

所以模块工程的结构如下图所示

• xuecheng-plus-content-api：接口工程，为前端提供接口。
• xuecheng-plus-content-service: 业务工程，为接口工程提供业务支撑。在这个模块进行业务开发
• xuecheng-plus-content-model: 数据模型工程，存储数据模型类、数据传输类型等

xuecheng-plus-content：内容管理模块工程，负责聚合xuecheng-plus-content-api、xuecheng-plus-content-service、xuecheng-plus-content-model。

2.1.3 数据模型

下边从查询条件、查询列表两个方面分析数据模型

• 查询条件：

包括：课程名称、课程审核状态、课程发布状态

课程名称：可以模糊搜索

课程审核状态：未提交、已提交、审核通过、审核未通过

课程发布状态：未发布、已发布、已下线

因为是分页查询所以查询条件中还要包括当前页码、每页显示记录数。

• 查询结果：

查询结果中包括：课程id、课程名称、任务数、创建时间、是否付费、审核状态、类型，操作

任务数：该课程所包含的课程计划数，即课程章节数。

是否付费：课程包括免费、收费两种。

类型：录播、直播。

因为是分页查询所以查询结果中还要包括总记录数、当前页、每页显示记录数。

2.2 代码开发

2.2.1 创建工程

1）创建xuecheng-plus-content工程

pom文件👇

需要扫描同级xuecheng-plus-parent工程模块的依赖，所以需要<relativePath>../xuecheng-plus-parent</relativePath>

<?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>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-parent</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../xuecheng-plus-parent</relativePath>
        <!--        <relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;-->
    </parent>

<!--    聚合管理子模块     -->
    <modules>
        <module>xuecheng-plus-content-api</module>
        <module>xuecheng-plus-content-service</module>
        <module>xuecheng-plus-content-model</module>
    </modules>
<!--    打包方式    -->
    <packaging>pom</packaging>

    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-content</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-content</name>
    <description>xuecheng-plus-content</description>

    <properties>
        <java.version>17</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-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

2）在xuecheng-plus-content下创建xuecheng-plus-content-model数据模型工程

pom文件👇

<?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>
<!--  父工程为xuecheng-plus-content工程  -->
    <parent>
        <groupId>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-content</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-content-model</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-content-model</name>
    <description>xuecheng-plus-content-model</description>
    
    <properties>
        <java.version>17</java.version>
    </properties>
<!--  本工程依赖Base基础工程  -->
    <dependencies>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xuecheng-plus-base</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

3）在xuecheng-plus-content下创建xuecheng-plus-content-service接口实现工程

pom文件👇

<?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>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-content</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-content-service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-content-service</name>
    <description>xuecheng-plus-content-service</description>

    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xuecheng-plus-content-model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

4）在xuecheng-plus-content下创建xuecheng-plus-content-api接口工程。

xuecheng-plus-content-api接口工程的父工程是xuecheng-plus-content，它依赖了xuecheng-plus-base基础工程

pom文件👇

<?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>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-content</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-content-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-content-api</name>
    <description>xuecheng-plus-content-api</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xuecheng-plus-content-service</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

四个工程模块如下：

2.2.2 生成po类实体类

2.2.3 接口设计

接口设计例子入下：

POST /content/course/list?pageNo=2&pageSize=1
Content-Type: application/json

{
  "auditStatus": "202002",
  "courseName": "",
  "publishStatus":""
}
###成功响应结果
{
  "items": [
    {
      "id": 26,
      "companyId": 1232141425,
      "companyName": null,
      "name": "spring cloud实战",
      "users": "所有人",
      "tags": null,
      "mt": "1-3",
      "mtName": null,
      "st": "1-3-2",
      "stName": null,
      "grade": "200003",
      "teachmode": "201001",
      "description": "本课程主要从四个章节进行讲解： 1.微服务架构入门 2.spring cloud 基础入门 3.实战Spring Boot 4.注册中心eureka。",
      "pic": "https://cdn.educba.com/academy/wp-content/uploads/2018/08/Spring-BOOT-Interview-questions.jpg",
      "createDate": "2019-09-04 09:56:19",
      "changeDate": "2021-12-26 22:10:38",
      "createPeople": null,
      "changePeople": null,
      "auditStatus": "202002",
      "auditMind": null,
      "auditNums": 0,
      "auditDate": null,
      "auditPeople": null,
      "status": 1,
      "coursePubId": null,
      "coursePubDate": null
    }
  ],
  "counts": 23,
  "page": 2,
  "pageSize": 1
}

• 定义分页查询封装实体类

由于分页查询这一类的接口在项目较多，这里针对分页查询的参数（当前页码、每页显示记录数）单独在xuecheng-plus-base基础工程中定义。

package com.xuecheng.base.model;

import lombok.Data;


/**
 * @author Mr.M
 * @version 1.0
 * @description 分页参数
 * @date 2022/9/6 11:05
 */
@Data
public class PageParams {

//    当前页
    private Long pageNo = 1L;

//    每页显示的条数
    private Long pageSize = 30L;

}

• 定义前端发送给后端的请求封装实体类

package com.xuecheng.content.model.dto;

import lombok.Data;

/**
 * @author Mr.M
 * @version 1.0
 * @description 课程查询参数
 * @date 2023/2/12 9:05
 */
@Data
public class QueryCourseParamsDto {

    //审核状态
    private String auditStatus;
    //课程名称
    private String courseName;
    //发布状态
    private String publishStatus;

}

• 定义封装后端响应给前端的数据的实体类

package com.xuecheng.base.model;

import lombok.Data;

import java.io.Serializable;
import java.util.List;

/**
 * @description 翻页查询结果
 */
@Data
public class PageResult<T> implements Serializable {

    // 数据列表
    private List<T> items;

    //总记录数
    private long counts;

    //当前页码
    private long page;

    //每页记录数
    private long pageSize;
}

• 在api工程添加依赖

<?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>com.xuecheng</groupId>
        <artifactId>xuecheng-plus-content</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xuecheng-plus-content-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xuecheng-plus-content-api</name>
    <description>xuecheng-plus-content-api</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xuecheng-plus-content-service</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>io.swagger.core.v3</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j</artifactId>
<!--            <version>2.17.2</version>-->
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

2.2.4 定义接口

1）在api工程中定义controller方法

package com.xuecheng.content.api;


import com.xuecheng.base.model.PageParams;
import com.xuecheng.base.model.PageResult;
import com.xuecheng.content.model.dto.QueryCourseParamsDto;
import com.xuecheng.content.model.po.CourseBase;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 课程信息接口
 */
@RestController
public class CourseBaseInfoController {

    /**
     * 课程查询接口
     * @param pageParams 分页参数
     * @param queryCourseParamsDto 查询条件
     * @return 课程列表
     */
    @RequestMapping("/course/list")
    public PageResult<CourseBase> list(PageParams pageParams, QueryCourseParamsDto queryCourseParamsDto){
        return null;
    }
}

2）在content工程下创建ContentApplication启动类

package com.xuecheng.content;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author Mr.M
 * @version 1.0
 * @description 内容管理服务启动类
 * @date 2023/2/12 8:09
 */
@SpringBootApplication
public class ContentApplication {
    public static void main(String[] args) {
        SpringApplication.run(ContentApplication.class, args);
    }
}

3）添加配置文件

# application.yml
server:
  port: 63040
  servlet:
    context-path: /content

spring:
  application:
    name: content-api
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://192.168.101.65:3306/xcplus_content?serverTimezone=UTC&useUnicode=true&useSSL=false
    username: root
    password: mysql

问题：解决bootstrap.yml没有小树叶的问题

解决：

DTO数据传输对象、PO持久化对象，DTO用于接口层前端 向业务层后端 之间传输数据，PO数据库表的实体类对象用于业务层与持久层之间传输数据，有些项目还会设置VO对象，VO对象用在前端与接口层之间传输数据