How to minimize maven pom.xml

Question

I am working on a spring-boot maven project (Maven 3.5, Java 8). Because of using Swagger Codegen in my project to generate classes, "plugins" tag of the pom.xml is getting bigger:

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin> 
            <groupId>io.swagger</groupId>
            <artifactId>swagger-codegen-maven-plugin</artifactId>
            <version>2.2.3</version>
            <executions>
                <execution>
                    <id>file1</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>src/main/resources/swagger/../file1.json</inputSpec>
                        <generateApis>false</generateApis>
                        <generateSupportingFiles>false</generateSupportingFiles>
                        <generateApiDocumentation>false</generateApiDocumentation>
                        <modelPackage>com.bla.bla.model</modelPackage>
                        <templateDirectory>src/main/resources/swagger/templates</templateDirectory>
                        <language>spring</language>
                        <modelNamePrefix>ABC</modelNamePrefix>
                        <configOptions>
                            <interfaceOnly>true</interfaceOnly>
                            <java8>true</java8>
                        </configOptions>
                    </configuration>
                </execution>
                <execution>
                    <id>file2</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>src/main/resources/swagger/.../file2.json</inputSpec>
                        <generateApis>false</generateApis>
                        <generateSupportingFiles>false</generateSupportingFiles>
                        <generateApiDocumentation>false</generateApiDocumentation>
                        <modelPackage>com.bla.bla.model</modelPackage>
                        <templateDirectory>src/main/resources/swagger/templates</templateDirectory>
                        <language>spring</language>
                        <modelNamePrefix>ABC</modelNamePrefix>
                        <configOptions>
                            <interfaceOnly>true</interfaceOnly>
                            <java8>true</java8>
                        </configOptions>
                    </configuration>
                </execution>
...

If I move some plugins in another xml file, is it possible to include this xml file into pom.xml? If it isn't possible, then how can I minimize this file?

EDIT: This question is not a duplicate of Is it possible to split maven pom files?. My project hasn't been big yet. Only pom.xml file is getting bigger, so there is no necessity to seperate my codes into modules and organize it in a way of having parent-child pom.xml files. I need something different.

Answer 1

You can define common plugin properties in <pluginManagement> element once and then for each execution define only specific configurations. i.e. <inputSpec>src/main/resources/swagger/../file1.json</inputSpec>

Or you can do the same (<pluginManagment>) in another parent project and in all children put only specific configurations.

UPD:

example:

...
<build>
  <pluginManagement>
    <plugins>
        <plugin>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-codegen-maven-plugin</artifactId>
            <version>2.2.3</version>
            <configuration>
                <generateApis>false</generateApis>
                <generateSupportingFiles>false</generateSupportingFiles>
                <generateApiDocumentation>false</generateApiDocumentation>
                <modelPackage>com.bla.bla.model</modelPackage>
                <templateDirectory>src/main/resources/swagger/templates
                </templateDirectory>
                <language>spring</language>
                <modelNamePrefix>ABC</modelNamePrefix>
                <configOptions>
                    <interfaceOnly>true</interfaceOnly>
                    <java8>true</java8>
                </configOptions>
            </configuration>
        </plugin>
    </plugins>
</pluginManagement>
<plugins>
    <plugin>
        <groupId>io.swagger</groupId>
        <artifactId>swagger-codegen-maven-plugin</artifactId>
        <executions>
            <execution>
                <id>file1</id>
                <goals>
                    <goal>generate</goal>
                </goals>
                <configuration>
                    <inputSpec>src/main/resources/swagger/../file1.json</inputSpec>
                </configuration>
            </execution>
            <execution>
                <id>file2</id>
                <goals>
                    <goal>generate</goal>
                </goals>
                <configuration>
                    <inputSpec>src/main/resources/swagger/.../file2.json</inputSpec>
                </configuration>
            </execution>
        </executions>
    </plugin>
  </plugins>
</build>             

...