springboot [ERROR] Failed to execute goal org.codehaus.mojo:xml-maven-plugin:1.0.2:transform (post-process-flattened-pom) on project spring-boot-dependencies: Unable to parse configuration of mojo org.codehaus.mojo:xml-maven-plugin:1.0.2:transform for parameter includes: Cannot assign configuration entry 'includes' with value '.flattened-pom.xml' of type java.lang.String to property of type java.lang.String[] -> [Help 1]

"C:\Program Files\Java\jdk1.8.0_121\bin\java.exe" -Dmaven.multiModuleProjectDirectory=D:\apache_repository\spring-boot-2.0.x -Dmaven.home=D:\installpackage\apache-maven-3.3.1-bin\apache-maven-3.3.1 -Dclassworlds.conf=D:\installpackage\apache-maven-3.3.1-bin\apache-maven-3.3.1\bin\m2.conf -javaagent:D:\installpackage\ideaIU-2018.2.5.win\lib\idea_rt.jar=63398:D:\installpackage\ideaIU-2018.2.5.win\bin -Dfile.encoding=UTF-8 -classpath D:\installpackage\apache-maven-3.3.1-bin\apache-maven-3.3.1\boot\plexus-classworlds-2.5.2.jar org.codehaus.classworlds.Launcher -Didea.version=2018.2.5 --update-snapshots -s D:\installpackage\apache-maven-3.3.1-bin\apache-maven-3.3.1\conf\settings.xml -Dmaven.repo.local=D:\maven_repository clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] Spring Boot Dependencies
[INFO] Spring Boot Parent
[INFO] Spring Boot Testing Support
[INFO] Spring Boot Configuration Processor
[INFO] Spring Boot
[INFO] Spring Boot Test
[INFO] Spring Boot Auto-Configure Annotation Processor
[INFO] Spring Boot AutoConfigure
[INFO] Spring Boot Actuator
[INFO] Spring Boot Actuator AutoConfigure
[INFO] Spring Boot Developer Tools
[INFO] Spring Boot Configuration Metadata
[INFO] Spring Boot Properties Migrator
[INFO] Spring Boot Test Auto-Configure
[INFO] Spring Boot Loader
[INFO] Spring Boot Loader Tools
[INFO] Spring Boot Antlib
[INFO] Spring Boot Gradle Plugin
[INFO] Spring Boot Maven Plugin
[INFO] Spring Boot Tools
[INFO] Spring Boot Logging Starter
[INFO] Spring Boot Starter
[INFO] Spring Boot ActiveMQ Starter
[INFO] Spring Boot AMQP Starter
[INFO] Spring Boot AOP Starter
[INFO] Spring Boot Artemis Starter
[INFO] Spring Boot JDBC Starter
[INFO] Spring Boot Batch Starter
[INFO] Spring Boot Cache Starter
[INFO] Spring Boot Spring Cloud Connectors Starter
[INFO] Spring Boot Data Cassandra Starter
[INFO] Spring Boot Data Cassandra Reactive Starter
[INFO] Spring Boot Data Couchbase Starter
[INFO] Spring Boot Data Couchbase Reactive Starter
[INFO] Spring Boot Data Elasticsearch Starter
[INFO] Spring Boot Data JPA Starter
[INFO] Spring Boot Data LDAP Starter
[INFO] Spring Boot Data MongoDB Starter
[INFO] Spring Boot Data MongoDB Reactive Starter
[INFO] Spring Boot Data Neo4j Starter
[INFO] Spring Boot Data Redis Starter
[INFO] Spring Boot Data Redis Reactive Starter
[INFO] Spring Boot Json Starter
[INFO] Spring Boot Tomcat Starter
[INFO] Spring Boot Web Starter
[INFO] Spring Boot Data REST Starter
[INFO] Spring Boot Data Solr Starter
[INFO] Spring Boot FreeMarker Starter
[INFO] Spring Boot Groovy Templates Starter
[INFO] Spring Boot HATEOAS Starter
[INFO] Spring Boot Integration Starter
[INFO] Spring Boot Validation Starter
[INFO] Spring Boot Jersey Starter
[INFO] Spring Boot Jetty Starter
[INFO] Spring Boot JOOQ Starter
[INFO] Spring Boot Atomikos JTA Starter
[INFO] Spring Boot Bitronix JTA Starter
[INFO] Spring Boot Narayana JTA Starter
[INFO] Spring Boot Log4j 2 Starter
[INFO] Spring Boot Mail Starter
[INFO] Spring Boot Mustache Starter
[INFO] Spring Boot Actuator Starter
[INFO] Spring Boot Starter Parent
[INFO] Spring Boot Quartz Starter
[INFO] Spring Boot Reactor Netty Starter
[INFO] Spring Boot Security Starter
[INFO] Spring Boot Test Starter
[INFO] Spring Boot Thymeleaf Starter
[INFO] Spring Boot Undertow Starter
[INFO] Spring Boot WebFlux Starter
[INFO] Spring Boot WebSocket Starter
[INFO] Spring Boot Web Services Starter
[INFO] Spring Boot Starters
[INFO] Spring Boot CLI
[INFO] Spring Boot Docs
[INFO] Spring Boot Build
[INFO] Spring Boot Samples Invoker
[INFO] Spring Boot Configuration Processor Tests
[INFO] Spring Boot DevTools Tests
[INFO] Spring Boot Server Tests
[INFO] Spring Boot Launch Script Integration Tests
[INFO] Spring Boot Integration Tests
[INFO] Spring Boot Tests
[INFO] Spring Boot Build
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Spring Boot Dependencies 2.0.10.BUILD-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:3.0.0:clean (default-clean) @ spring-boot-dependencies ---
[INFO] Deleting D:\apache_repository\spring-boot-2.0.x\spring-boot-project\spring-boot-dependencies\target
[INFO] 
[INFO] --- flatten-maven-plugin:1.0.1:clean (flatten-clean) @ spring-boot-dependencies ---
[INFO] Deleting D:\apache_repository\spring-boot-2.0.x\spring-boot-project\spring-boot-dependencies\.flattened-pom.xml
[INFO] 
[INFO] --- maven-checkstyle-plugin:3.0.0:check (checkstyle-validation) @ spring-boot-dependencies ---
[INFO] 
[INFO] --- spring-javaformat-maven-plugin:0.0.15:validate (default) @ spring-boot-dependencies ---
[INFO] 
[INFO] --- flatten-maven-plugin:1.0.1:flatten (flatten-effective-pom) @ spring-boot-dependencies ---
[INFO] Generating flattened POM of project org.springframework.boot:spring-boot-dependencies:pom:2.0.10.BUILD-SNAPSHOT...
[INFO] 
[INFO] --- flatten-maven-plugin:1.0.1:flatten (flatten) @ spring-boot-dependencies ---
[INFO] Generating flattened POM of project org.springframework.boot:spring-boot-dependencies:pom:2.0.10.BUILD-SNAPSHOT...
[INFO] 
[INFO] --- xml-maven-plugin:1.0.2:transform (post-process-effective-pom) @ spring-boot-dependencies ---
[INFO] Transforming file: D:\apache_repository\spring-boot-2.0.x\spring-boot-project\spring-boot-dependencies\target\effective-pom\spring-boot-dependencies.xml
[INFO] Transformed 1 file(s).
[INFO] 
[INFO] --- xml-maven-plugin:1.0.2:transform (post-process-flattened-pom) @ spring-boot-dependencies ---
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] Spring Boot Dependencies ........................... FAILURE [  5.766 s]
[INFO] Spring Boot Parent ................................. SKIPPED
[INFO] Spring Boot Testing Support ........................ SKIPPED
[INFO] Spring Boot Configuration Processor ................ SKIPPED
[INFO] Spring Boot ........................................ SKIPPED
[INFO] Spring Boot Test ................................... SKIPPED
[INFO] Spring Boot Auto-Configure Annotation Processor .... SKIPPED
[INFO] Spring Boot AutoConfigure .......................... SKIPPED
[INFO] Spring Boot Actuator ............................... SKIPPED
[INFO] Spring Boot Actuator AutoConfigure ................. SKIPPED
[INFO] Spring Boot Developer Tools ........................ SKIPPED
[INFO] Spring Boot Configuration Metadata ................. SKIPPED
[INFO] Spring Boot Properties Migrator .................... SKIPPED
[INFO] Spring Boot Test Auto-Configure .................... SKIPPED
[INFO] Spring Boot Loader ................................. SKIPPED
[INFO] Spring Boot Loader Tools ........................... SKIPPED
[INFO] Spring Boot Antlib ................................. SKIPPED
[INFO] Spring Boot Gradle Plugin .......................... SKIPPED
[INFO] Spring Boot Maven Plugin ........................... SKIPPED
[INFO] Spring Boot Tools .................................. SKIPPED
[INFO] Spring Boot Logging Starter ........................ SKIPPED
[INFO] Spring Boot Starter ................................ SKIPPED
[INFO] Spring Boot ActiveMQ Starter ....................... SKIPPED
[INFO] Spring Boot AMQP Starter ........................... SKIPPED
[INFO] Spring Boot AOP Starter ............................ SKIPPED
[INFO] Spring Boot Artemis Starter ........................ SKIPPED
[INFO] Spring Boot JDBC Starter ........................... SKIPPED
[INFO] Spring Boot Batch Starter .......................... SKIPPED
[INFO] Spring Boot Cache Starter .......................... SKIPPED
[INFO] Spring Boot Spring Cloud Connectors Starter ........ SKIPPED
[INFO] Spring Boot Data Cassandra Starter ................. SKIPPED
[INFO] Spring Boot Data Cassandra Reactive Starter ........ SKIPPED
[INFO] Spring Boot Data Couchbase Starter ................. SKIPPED
[INFO] Spring Boot Data Couchbase Reactive Starter ........ SKIPPED
[INFO] Spring Boot Data Elasticsearch Starter ............. SKIPPED
[INFO] Spring Boot Data JPA Starter ....................... SKIPPED
[INFO] Spring Boot Data LDAP Starter ...................... SKIPPED
[INFO] Spring Boot Data MongoDB Starter ................... SKIPPED
[INFO] Spring Boot Data MongoDB Reactive Starter .......... SKIPPED
[INFO] Spring Boot Data Neo4j Starter ..................... SKIPPED
[INFO] Spring Boot Data Redis Starter ..................... SKIPPED
[INFO] Spring Boot Data Redis Reactive Starter ............ SKIPPED
[INFO] Spring Boot Json Starter ........................... SKIPPED
[INFO] Spring Boot Tomcat Starter ......................... SKIPPED
[INFO] Spring Boot Web Starter ............................ SKIPPED
[INFO] Spring Boot Data REST Starter ...................... SKIPPED
[INFO] Spring Boot Data Solr Starter ...................... SKIPPED
[INFO] Spring Boot FreeMarker Starter ..................... SKIPPED
[INFO] Spring Boot Groovy Templates Starter ............... SKIPPED
[INFO] Spring Boot HATEOAS Starter ........................ SKIPPED
[INFO] Spring Boot Integration Starter .................... SKIPPED
[INFO] Spring Boot Validation Starter ..................... SKIPPED
[INFO] Spring Boot Jersey Starter ......................... SKIPPED
[INFO] Spring Boot Jetty Starter .......................... SKIPPED
[INFO] Spring Boot JOOQ Starter ........................... SKIPPED
[INFO] Spring Boot Atomikos JTA Starter ................... SKIPPED
[INFO] Spring Boot Bitronix JTA Starter ................... SKIPPED
[INFO] Spring Boot Narayana JTA Starter ................... SKIPPED
[INFO] Spring Boot Log4j 2 Starter ........................ SKIPPED
[INFO] Spring Boot Mail Starter ........................... SKIPPED
[INFO] Spring Boot Mustache Starter ....................... SKIPPED
[INFO] Spring Boot Actuator Starter ....................... SKIPPED
[INFO] Spring Boot Starter Parent ......................... SKIPPED
[INFO] Spring Boot Quartz Starter ......................... SKIPPED
[INFO] Spring Boot Reactor Netty Starter .................. SKIPPED
[INFO] Spring Boot Security Starter ....................... SKIPPED
[INFO] Spring Boot Test Starter ........................... SKIPPED
[INFO] Spring Boot Thymeleaf Starter ...................... SKIPPED
[INFO] Spring Boot Undertow Starter ....................... SKIPPED
[INFO] Spring Boot WebFlux Starter ........................ SKIPPED
[INFO] Spring Boot WebSocket Starter ...................... SKIPPED
[INFO] Spring Boot Web Services Starter ................... SKIPPED
[INFO] Spring Boot Starters ............................... SKIPPED
[INFO] Spring Boot CLI .................................... SKIPPED
[INFO] Spring Boot Docs ................................... SKIPPED
[INFO] Spring Boot Build .................................. SKIPPED
[INFO] Spring Boot Samples Invoker ........................ SKIPPED
[INFO] Spring Boot Configuration Processor Tests .......... SKIPPED
[INFO] Spring Boot DevTools Tests ......................... SKIPPED
[INFO] Spring Boot Server Tests ........................... SKIPPED
[INFO] Spring Boot Launch Script Integration Tests ........ SKIPPED
[INFO] Spring Boot Integration Tests ...................... SKIPPED
[INFO] Spring Boot Tests .................................. SKIPPED
[INFO] Spring Boot Build .................................. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 33.058 s
[INFO] Finished at: 2020-01-10T17:49:14+08:00
[INFO] Final Memory: 490M/1206M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:xml-maven-plugin:1.0.2:transform (post-process-flattened-pom) on project spring-boot-dependencies: Unable to parse configuration of mojo org.codehaus.mojo:xml-maven-plugin:1.0.2:transform for parameter includes: Cannot assign configuration entry 'includes' with value '.flattened-pom.xml' of type java.lang.String to property of type java.lang.String[] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginConfigurationException

Process finished with exit code 1

Comment From: wilkinsona

It looks like you're trying to use Maven 3.3. Building Spring Boot itself requires Maven 3.5. I'd recommend using the wrapper script (mvnw) so that the required version is used automatically.

If you have any further questions, please follow up on Stack Overflow or Gitter. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements.