问题1：mybatis-plus版本和mysql版本不对应

1.更改mysql到高版本（使用父项目版本）

2.重新在高版本创建数据库

3.在core项目中更改连接

问题1：mybatis-plus版本和mysql版本不对应

1.更改mysql到高版本（使用父项目版本）

①更改父项目pom（将mysql注释掉）

<?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>

    <groupId>com.atguigu</groupId>
    <artifactId>srb</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>guigu-common</module>
        <module>service-base</module>
        <module>service-core</module>
    </modules>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.4.RELEASE</version>
    </parent>

    <properties>
        <!--<java.version>1.8</java.version>-->
        <mysql-connector-java.version>5.1.32</mysql-connector-java.version>
        <spring-cloud-alibaba.version>2.2.2.RELEASE</spring-cloud-alibaba.version>
        <spring-cloud.version>Hoxton.SR8</spring-cloud.version>
        <mybatis-plus.version>3.4.1</mybatis-plus.version>
        <velocity.version>2.0</velocity.version>
        <swagger.version>2.9.2</swagger.version>
        <swagger-bootstrap-ui.version>1.9.2</swagger-bootstrap-ui.version>
        <commons-lang3.version>3.9</commons-lang3.version>
        <commons-fileupload.version>1.3.1</commons-fileupload.version>
        <commons-io.version>2.6</commons-io.version>
        <alibaba.easyexcel.version>2.1.1</alibaba.easyexcel.version>
        <apache.xmlbeans.version>3.1.0</apache.xmlbeans.version>
        <fastjson.version>1.2.28</fastjson.version>
        <gson.version>2.8.2</gson.version>
        <json.version>20170516</json.version>
        <aliyun-java-sdk-core.version>4.3.3</aliyun-java-sdk-core.version>
        <aliyun-sdk-oss.version>3.10.2</aliyun-sdk-oss.version>
        <jodatime.version>2.10.1</jodatime.version>
        <jwt.version>0.7.0</jwt.version>
        <httpclient.version>4.5.1</httpclient.version>
    </properties>


    <dependencyManagement>
        <dependencies>
            <!--&lt;!&ndash;mysql&ndash;&gt;-->
            <!--<dependency>-->
                <!--<groupId>mysql</groupId>-->
                <!--<artifactId>mysql-connector-java</artifactId>-->
                <!--<version>${mysql-connector-java.version}</version>-->
            <!--</dependency>-->
            <!--Spring Cloud-->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--Spring Cloud Alibaba-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <!--mybatis-plus-->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>
            <!--mybatis-plus 代码生成器-->
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-generator</artifactId>
                <version>${mybatis-plus.version}</version>
            </dependency>
            <!-- Mybatis Plus 代码生成器模板引擎,  -->
            <dependency>
                <groupId>org.apache.velocity</groupId>
                <artifactId>velocity-engine-core</artifactId>
                <version>${velocity.version}</version>
            </dependency>

            <!--swagger-->
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <!--swagger ui-->
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <!--swagger-bootstrap-ui-->
            <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>swagger-bootstrap-ui</artifactId>
                <version>${swagger-bootstrap-ui.version}</version>
            </dependency>

            <!--commons-lang3-->
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${commons-lang3.version}</version>
            </dependency>

            <!--文件上传-->
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>

            <!--commons-io-->
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>

            <!--excel解析-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>easyexcel</artifactId>
                <version>${alibaba.easyexcel.version}</version>
            </dependency>
            <!--excel解析依赖-->
            <dependency>
                <groupId>org.apache.xmlbeans</groupId>
                <artifactId>xmlbeans</artifactId>
                <version>${apache.xmlbeans.version}</version>
            </dependency>

            <!--json-->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <dependency>
                <groupId>org.json</groupId>
                <artifactId>json</artifactId>
                <version>${json.version}</version>
            </dependency>
            <dependency>
                <groupId>com.google.code.gson</groupId>
                <artifactId>gson</artifactId>
                <version>${gson.version}</version>
            </dependency>

            <!--阿里云SDK远程调用-->
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-sdk-core</artifactId>
                <version>${aliyun-java-sdk-core.version}</version>
            </dependency>

            <!--阿里云文件管理-->
            <dependency>
                <groupId>com.aliyun.oss</groupId>
                <artifactId>aliyun-sdk-oss</artifactId>
                <version>${aliyun-sdk-oss.version}</version>
            </dependency>

            <!--日期时间工具-->
            <dependency>
                <groupId>joda-time</groupId>
                <artifactId>joda-time</artifactId>
                <version>${jodatime.version}</version>
            </dependency>

            <!--jwt工具-->
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt</artifactId>
                <version>${jwt.version}</version>
            </dependency>

            <!--httpclient-->
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>${httpclient.version}</version>
            </dependency>


        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

2.重新在高版本创建数据库

3.在core项目中更改连接

• application.yml

server:
  port: 8110 # 服务端口
spring:
  profiles:
    active: dev # 环境设置
  application:
    name: service-core # 服务名
  datasource: # mysql数据库连接
    type: com.zaxxer.hikari.HikariDataSource
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/db200921_srb_core?serverTimezone=GMT%2B8&characterEncoding=utf-8
    username: root
    password: abc123

mybatis-plus: #mybatis
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath:com/atguigu/srb/core/mapper/xml/*.xml

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