frontend-maven-plugin插件无法下载nodejs和npm的问题

npm clean package 报错：

[ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.6:install-node-and-npm (install node and npm) on project XXX:
 Could not download Node.js: Could not download https://nodejs.org/dist/v9.11.1/node-v9.11.1-linux-x64.tar.gz:
  sun.security.validator.ValidatorException: PKIX path building failed: 
  sun.security.provider.certpath.SunCertPathBuilderException:
  unable to find valid certification path to requested target -> [Help 1]

修改 pom.xml文件中的frontend-maven-plugin插件配置：

<plugin>
        <groupId>com.github.eirslett</groupId>
        <artifactId>frontend-maven-plugin</artifactId>
        <version>${frontend-maven-plugin.version}</version>
        <executions>
          <execution>
            <id>install node and npm</id>
            <goals>
              <goal>install-node-and-npm</goal>
            </goals>
            <configuration>
              <nodeDownloadRoot>http://nodejs.org/dist/</nodeDownloadRoot>
              <npmDownloadRoot>http://registry.npmjs.org/npm/-/</npmDownloadRoot>
              <nodeVersion>v9.11.1</nodeVersion>
            </configuration>
          </execution>
          <!-- Install all project dependencies -->
          <execution>
            <id>npm install</id>
            <goals>
              <goal>npm</goal>
            </goals>
            <!-- optional: default phase is "generate-resources" -->
            <phase>generate-resources</phase>
            <!-- Optional configuration which provides for running any npm command -->
            <configuration>
              <arguments>install</arguments>
            </configuration>
          </execution>
          <!-- Build and minify static files -->
          <execution>
            <id>npm run build</id>
            <goals>
              <goal>npm</goal>
            </goals>
            <configuration>
              <arguments>run build</arguments>
            </configuration>
          </execution>
        </executions>
      </plugin>

添加了：

              <nodeDownloadRoot>http://nodejs.org/dist/</nodeDownloadRoot>
              <npmDownloadRoot>http://registry.npmjs.org/npm/-/</npmDownloadRoot>