报错内容如下：
[ERROR] Failed to execute goal com.github.davidmoten:jax-maven-plugin:0.1.6:xjc (default) on project oozie-fluent-job-api: Execution default of goal com.github.davidmoten:jax-maven-plugin:0.1.6:xjc failed: Plugin com.github.davidmoten:jax-maven-plugin:0.1.6 or one of its dependencies could not be resolved: Failed to collect dependencies at com.github.davidmoten:jax-maven-plugin:jar:0.1.6 -> com.github.davidmoten:jax-maven-plugin-core:jar:0.1.6 -> com.sun.xml.ws:jaxws-tools:jar:2.3.1 -> com.sun.xml.ws:jaxws-rt:jar:2.3.1 -> com.sun.xml.ws:policy:jar:2.7.5 -> org.glassfish.jaxb:txw2:jar:2.4.0-b180608.0325: Failed to read artifact descriptor for org.glassfish.jaxb:txw2:jar:2.4.0-b180608.0325: Could not transfer artifact org.glassfish.jaxb:txw2:pom:2.4.0-b180608.0325 from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [releases.java.net (http://maven.java.net/content/repositories/releases/, default, releases+snapshots), jvnet-nexus-staging (http://maven.java.net/content/repositories/staging/, default, releases+snapshots), eclipse (http://download.eclipse.org/rt/eclipselink/maven.repo, default, releases+snapshots), jvnet-nexus-snapshots (http://maven.java.net/content/repositories/snapshots/, default, snapshots)] -> [Help 1]
官方解决方案：
Maven – Release Notes – Maven 3.8.1 (apache.org)
修复方案：
更新依赖版本，替换http为https。
保持当前依赖，通过 define a mirror in your settings来解决。
实践
在 home 目录下的 .m2/ 目录创建 settings.xml 文件，如下：
[root@localhost .m2]# pwd
/root/.m2
[root@localhost .m2]# ls
repository settings.xml
settings.xml 全文如下：
<?xml version="1.0" encoding="UTF-8" ?>
<settings xsi:schemaLocation='http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd'
xmlns='http://maven.apache.org/SETTINGS/1.0.0' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<mirrors>
<!--
<mirror>
<id></id>
<name></name>
<url></url>
<mirrorOf></mirrorOf>
</mirror>
-->
<mirror>
<id>mirror-release.java.net</id>
<name>mirror java.net release repository</name>
<url>https://maven.java.net/content/repositories/releases/</url>
<mirrorOf>releases.java.net</mirrorOf>
</mirror>
<mirror>
<id>mirror-jvnet-nexus-staging</id>
<name>mirror jvnet-nexus-staging repository</name>
<url>https://maven.java.net/content/repositories/staging/</url>
<mirrorOf>jvnet-nexus-staging</mirrorOf>
</mirror>
<mirror>
<id>mirror-eclipse</id>
<name>mirror eclipse repository</name>
<url>https://download.eclipse.org/rt/eclipselink/maven.repo</url>
<mirrorOf>eclipse</mirrorOf>
</mirror>
<mirror>
<id>mirror-jvnet-nexus-snapshots</id>
<name>mirror jvnet-nexus-snapshots repository</name>
<url>https://maven.java.net/content/repositories/snapshots/</url>
<mirrorOf>jvnet-nexus-snapshots</mirrorOf>
</mirror>
</mirrors>
</settings>
通过命令 mvn help:effective-settings 检查当前settings
[root@localhost .m2]# mvn help:effective-settings
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------< org.apache.maven:standalone-pom >-------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-help-plugin:3.2.0:effective-settings (default-cli) @ standalone-pom ---
[INFO]
Effective user-specific configuration settings:
<?xml version="1.0" encoding="UTF-8"?>
<!-- ====================================================================== -->
<!-- -->
<!-- Generated by Maven Help Plugin on 2021-06-10T16:21:51+08:00 -->
<!-- See: http://maven.apache.org/plugins/maven-help-plugin/ -->
<!-- -->
<!-- ====================================================================== -->
<!-- ====================================================================== -->
<!-- -->
<!-- Effective Settings for 'root' on 'localhost.localdomain' -->
<!-- -->
<!-- ====================================================================== -->
<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 http://maven.apache.org/xsd/settings-1.2.0.xsd">
<localRepository>/root/.m2/repository</localRepository>
<mirrors>
<mirror>
<mirrorOf>releases.java.net</mirrorOf>
<name>mirror java.net release repository</name>
<url>https://maven.java.net/content/repositories/releases/</url>
<id>mirror-release.java.net</id>
</mirror>
<mirror>
<mirrorOf>jvnet-nexus-staging</mirrorOf>
<name>mirror jvnet-nexus-staging repository</name>
<url>https://maven.java.net/content/repositories/staging/</url>
<id>mirror-jvnet-nexus-staging</id>
</mirror>
<mirror>
<mirrorOf>eclipse</mirrorOf>
<name>mirror eclipse repository</name>
<url>https://download.eclipse.org/rt/eclipselink/maven.repo</url>
<id>mirror-eclipse</id>
</mirror>
<mirror>
<mirrorOf>jvnet-nexus-snapshots</mirrorOf>
<name>mirror jvnet-nexus-snapshots repository</name>
<url>https://maven.java.net/content/repositories/snapshots/</url>
<id>mirror-jvnet-nexus-snapshots</id>
</mirror>
<mirror>
<mirrorOf>external:http:*</mirrorOf>
<name>Pseudo repository to mirror external repositories initially using HTTP.</name>
<url>http://0.0.0.0/</url>
<blocked>true</blocked>
<id>maven-default-http-blocker</id>
</mirror>
</mirrors>
<pluginGroups>
<pluginGroup>org.apache.maven.plugins</pluginGroup>
<pluginGroup>org.codehaus.mojo</pluginGroup>
</pluginGroups>
</settings>
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.755 s
[INFO] Finished at: 2021-06-10T16:21:52+08:00
[INFO] ------------------------------------------------------------------------
