java spring-boot pom.xml variables referenced properties

• xml version

// .properties 文件内定义
<properties>
    <pomMysql.version>8.0.17</pomMysql.version>
</properties>

// pom.xml 中引用
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${pomMysql.version}</version>
</dependency>

• The new version of the configuration method

// .properties 文件内定义
pomMysql.version=8.0.17

// pom.xml 中引用
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${pomMysql.version}</version>
</dependency>

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