Spring Boot 之Maven配置

快来打我* 2022-06-15 07:21 200阅读 0赞

### Maven users can inherit from the spring-boot-starter-parent project to obtain sensible defaults. The parent project provides the following features: ###

*  Java 1.8 as the default compiler level.
 *  UTF-8 source encoding.
 *  A Dependency Management section, allowing you to omit tags for common dependencies, inherited from the spring-boot-dependencies POM.
 *  Sensible resource filtering.
 *  Sensible plugin configuration (exec plugin, surefire, Git commit ID, shade).
 *  Sensible resource filtering for application.properties and application.yml including profile-specific files (e.g. application-foo.properties and application-foo.yml)
 *  On the last point: since the default config files accept Spring style placeholders ($\{…\}) the Maven filtering is changed to use @..@ placeholders (you can override that with a Maven property resource.delimiter).

#### **Inheriting the starter parent** ####

### To configure your project to inherit from the spring-boot-starter-parent simply set the parent: ###

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.M1</version>
    </parent>

### You should only need to specify the Spring Boot version number on this dependency. If you import additional starters, you can safely omit the version number. ###

### With that setup, you can also override individual dependencies by overriding a property in your own project. For instance, to upgrade to another Spring Data release train you’d add the following to your pom.xml. ###

<properties>
        <spring-data-releasetrain.version>Fowler-SR2</spring-data-releasetrain.version>
    </properties>

[Check the spring-boot-dependencies pom for a list of supported properties.][]

#### **Using Spring Boot without the parent POM** ####

### Not everyone likes inheriting from the spring-boot-starter-parent POM. You may have your own corporate standard parent that you need to use, or you may just prefer to explicitly declare all your Maven configuration. ###

### If you don’t want to use the spring-boot-starter-parent, you can still keep the benefit of the dependency management (but not the plugin management) by using a scope=import dependency: ###

<dependencyManagement>
         <dependencies>
            <dependency>
                
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.0.0.M1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

### That setup does not allow you to override individual dependencies using a property as explained above. To achieve the same result, you’d need to add an entry in the dependencyManagement of your project before the spring-boot-dependencies entry. For instance, to upgrade to another Spring Data release train you’d add the following to your pom.xml. ###

<dependencyManagement>
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.data</groupId>
                <artifactId>spring-data-releasetrain</artifactId>
                <version>Fowler-SR2</version>
                <scope>import</scope>
                <type>pom</type>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.0.0.M1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

### 你可通过在pom.xml中指定Parent标签来获取默认设置 ###

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.M1</version>
    </parent>

### 当然了，如果你不想继承使用spring-boot-starter-parent的一些默认设置，你可以通过dependencyManagement标签来显示声明Maven配置。 ###

### 在这种配置下，如果你需要重写或者升级某个项目依赖，你需要在pom.xml中的spring-boot-dependencies标签前添加对应的依赖： ###

#### [参考链接][Link 1] ####

[Check the spring-boot-dependencies pom for a list of supported properties.]: https://github.com/spring-projects/spring-boot/blob/v2.0.0.M1/spring-boot-dependencies/pom.xml
[Link 1]: http://docs.spring.io/spring-boot/docs/2.0.0.M1/reference/htmlsingle/#using-boot-maven-parent-pom