1.基于jdk8与本地

    环境准备

  1)下载jdk8并安装

 2）下载maven 3.6.3并解压放入D盘maven目录下，去掉外层

    设置阿里源

     

打开settings.xml,在mirrors标签之内增加，注意粘贴后</id>中的/有可能被删掉，要自己补上
 

    <mirror><id>nexus-aliyun</id><mirrorOf>central</mirrorOf><name>Nexus aliyun</name><url>http://maven.aliyun.com/nexus/content/groups/public</url></mirror>

大概位置

 

     再建立一个reposity

    

 3）idea关闭项目

    

All settings

overide都要选

 新建项目

   

注意server url要改成aliyun，才能在JDK中选到1.8   JAVA 8

https://start.aliyun.com/ 

选择aliyun也有代价，就是 pom没有parent标签，但没什么影响

另外即使没有启动按钮（就是下面右边绿色箭头），需要自己配置

  

确保这里已经选择

在Edit configuration中修改

引入mybaitis-plus

   

   <dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.1</version></dependency>

pom.xml全文是： 

<?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><groupId>com.i7i8i9</groupId><artifactId>eleven</artifactId><version>0.0.1-SNAPSHOT</version><name>eleven</name><description>eleven</description><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.6.13</spring-boot.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.2.2</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.5.1</version></dependency><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><scope>runtime</scope></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><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-dependencies</artifactId><version>${spring-boot.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><source>1.8</source><target>1.8</target><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring-boot.version}</version><configuration><mainClass>com.i7i8i9.eleven.ElevenApplication</mainClass><skip>true</skip></configuration><executions><execution><id>repackage</id><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build></project>

数据库配置

另外也为在新建项目时选择了mysql

 所以要进行数据库配置  main/resources下 增加application.yml

server:port: 9090
spring:datasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/test1?serverTimezone=GMT%2b8username: rootpassword: 123456