1.基于jdk8與本地

? ? 環境準備

? 1)下載jdk8并安裝

?2）下載maven 3.6.3并解壓放入D盤maven目錄下，去掉外層

? ? 設置阿里源

? ? ?

打開settings.xml,在mirrors標簽之內增加，注意粘貼后</id>中的/有可能被刪掉，要自己補上
?

 ? ?<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

?

? ? ?再建立一個reposity

? ??

?3）idea關閉項目

? ??

All settings

overide都要選

?新建項目

? ?

注意server url要改成aliyun，才能在JDK中選到1.8? ?JAVA 8

https://start.aliyun.com/?

選擇aliyun也有代價，就是?pom沒有parent標簽，但沒什么影響

另外即使沒有啟動按鈕（就是下面右邊綠色箭頭），需要自己配置

??

確保這里已經選擇

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>

數據庫配置

另外也為在新建項目時選擇了mysql

?所以要進行數據庫配置? 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