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IDEA创建SpringBoot项目使用JDK1.8

news 2025/9/30 7:03:55

由于现在还有大量项目使用的jdk版本是1.8，所以今天记录下IDEA创建JDK1.8版本SpringBoot项目的记录。

1 点new Project，新建项目

2 左边选择SpringInitalizr，右边名字路径随意，类型选maven，jdk我这只能选17，后边改

3 我先选择了这几个功能，日志用lombok，还有web，数据库里边的jdbc，mysql，mybatis。登录鉴权相关的SpringSecurity。

4 如果此时你不需要改jdk版本，点击create等待项目自动加载，就算完成了。

5 下面开始改jdk版本，把根目录下pom.xml 文件换成我这个版本

<?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>2.7.10</version> <!-- &#9989; 支持 Java 8 的最后稳定版 --><relativePath/></parent><groupId>com.example</groupId><artifactId>springDemo</artifactId><version>0.0.1-SNAPSHOT</version><name>springDemo</name><description>springDemo</description><url/><licenses><license/></licenses><developers><developer/></developers><scm><connection/><developerConnection/><tag/><url/></scm><properties><java.version>8</java.version></properties><dependencies><!-- 替换 MyBatis Starter --><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.2.0</version> <!-- &#9989; 支持 Java 8 --></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter-test</artifactId><version>2.2.0</version><scope>test</scope></dependency><!-- 替换测试框架为 JUnit 4 --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope><version>4.13.2</version></dependency><!-- JUnit Jupiter Engine（实现层） --><dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter-engine</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jdbc</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>org.springframework.security</groupId><artifactId>spring-security-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></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><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>${java.version}</source>       <!-- 使用 properties 中定义的版本 --><target>${java.version}</target><fork>true</fork>                     <!-- 确保独立进程编译避免干扰 --></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><annotationProcessorPaths><path><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.26</version></path></annotationProcessorPaths></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration></configuration></plugin></plugins></build></project>

记得maven reload一下

6 进入项目设置.把能换成1.8的都换

7 修改jdbc配置，得准备个数据库，本地或远程能访问的。在resource下增加application.yml 配置文件。

文件内容如下，我是本地mysql，本地安装mysql，可以搜索相关安装步骤。有时间我也出一期。

server:port : 8081spring:datasource:name : testurl : jdbc:mysql://localhost:3306/spring_demo?characterEncoding=utf8&allowPublicKeyRetrieval=true&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=trueusername : rootpassword: rootdriver-class-name: com.mysql.cj.jdbc.Driver
mybatis:config-location: classpath:mybatis-config.xml

8 在下面再增加mybatis-config.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><settings><!-- Globally enables or disables any caches configured in any mapper under this configuration --><setting name="cacheEnabled" value="true"/><!-- Sets the number of seconds the driver will wait for a response from the database --><setting name="defaultStatementTimeout" value="3000"/><!-- Enables automatic mapping from classic database column names A_COLUMN to camel case classic Java property names aColumn --><setting name="mapUnderscoreToCamelCase" value="true"/><!-- Allows JDBC support for generated keys. A compatible driver is required.This setting forces generated keys to be used if set to true,as some drivers deny compatibility but still work --><setting name="useGeneratedKeys" value="true"/></settings><!-- Continue going here -->
</configuration>