本篇主要說明以下內容：

1.SpringBoot2.x中Maven的配置內容，即：pom.xml的內容說明

1 Maven依賴的配置方式

使用Maven來配置SpringBoot2.x，有兩種方式：

1.SpringBoot2.x的父依賴，在使用SpringBoot2.x生成器生成的專案中，會是這種方式

2.專案獨立引入SpringBoot2.x的pom依賴

1.1 SpringBoot2.x父依賴

這種方式，專案完整的pom.xml檔案，如下：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cc.anxminise.spblearn</groupId>
    <artifactId>application</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>application</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
 

以上關鍵的配置，如下：

如果專案中已經有自己的parent，此時，可以使用專案獨立引入的方式。

1.2 專案獨立引入

這種方式是通過pom檔案中的dependencyManagement標籤來實現SpringBoot的引入，完整的pom.xml檔案如下：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cc.anxminise.spblearn</groupId>
    <artifactId>application</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>application</name>
    <description>Demo project for Spring Boot</description>

    <dependencyManagement>
             <dependencies>
                    <dependency>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-dependencies</artifactId>
                        <version>2.0.6.RELEASE</version>
                        <type>pom</type>
                        <scope>import</scope>
                    </dependency>
            </dependencies>
        </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </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.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                                <configuration>
                                   <!-- 程式的主啟動類，即：用@SpringBootApplication註解，包含main方法的類 -->
                                  <mainClass>cc.anxminise.learnspboot.Application</mainClass>
                                 </configuration>
                                <executions>
                                    <execution>
                                        <goals>
                                            <goal>repackage</goal>
                                        </goals>
                                    </execution>
                                </executions>        
            </plugin>
        </plugins>
    </build>

</project>
 

以上關鍵的配置，如下：

這種方式，相對而言，更為的靈活。