常见的Maven报错原因及解决方案

No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

解决方法

问题是将JRE作为JDK使用了，解决办法是安装JDK，并将JDK设置到Installed JREs中

图示

错误堆栈

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project hibernate: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[ERROR] -> [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/MojoFailureException

Failed to transfer http://xx.xx. Error code 400, Repository version policy: RELEASE does not allow metadata in path: cn/blueboz/train/hibernate/0.0.1-SNAPSHOT/maven-metadata.xml -> [Help 1]

问题原因

如果是deploy 出现问题，那么可能是因为将部署路径写错，如本例子，错误在于将SNAPSHOT版本写成RELEASE版本

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project hibernate: Failed to retrieve remote metadata cn.blueboz.train:hibernate:0.0.1-SNAPSHOT/maven-metadata.xml: Could not transfer metadata cn.blueboz.train:hibernate:0.0.1-SNAPSHOT/maven-metadata.xml from/to blueboz-snapshots (http://bluebozpc:8081/repository/maven-releases): Failed to transfer http://bluebozpc:8081/repository/maven-releases/cn/blueboz/train/hibernate/0.0.1-SNAPSHOT/maven-metadata.xml. Error code 400, Repository version policy: RELEASE does not allow metadata in path: cn/blueboz/train/hibernate/0.0.1-SNAPSHOT/maven-metadata.xml -> [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/MojoExecutionException

#

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project hibernate: Failed to deploy artifacts: Could not transfer artifact cn.blueboz.train:hibernate:jar:0.0.1-20170319.142156-1 from/to blueboz-snapshots (http://bluebozpc:8081/repository/maven-snapshots): Access denied to http://bluebozpc:8081/repository/maven-snapshots/cn/blueboz/train/hibernate/0.0.1-SNAPSHOT/hibernate-0.0.1-20170319.142156-1.jar. Error code 401, Unauthorized -> [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/MojoExecutionException

新建项目卡顿问题

将maven 的配置设置为offline,离线更新就可以了

Fail to transfer …错误

Failure to transfer 
    org.codehaus.plexus:plexus-archiver:jar:3.4
    was cached in the local repository, 
    resolution will not be reattempted until 
    the update interval of [Bsdn] has elapsed or updates are forced. 
    Original error: 
         org.codehaus.plexus:plexus-archiver:jar:3.4 
    Bsdn (http://nexus.bsdn.org/content/groups/public/):
    No response received after 60000

一般是因为nexus 私服链接超时，建议直接换一个私服即可，在用户路径下的setting中，修改成aliyun的私服

 <mirror>
  <id>Alibaba</id>
  <mirrorOf>central</mirrorOf>
  <name>AliyunMaven</name>
  <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
</mirror>

实在不行的话，根据GAV，定位到本地缓存目录，将

\M2_HOME.m2\repository\org\codehaus\plexus\plexus-archiver\3.4

目录下的资源删掉，重新UpdateProject即可

Update Project 的时候变成J2SE1.4

这个问题，网上提供了两种方案先给出代码，如果尝试了之后发现可以的话，请按照这种方式解决。如果还是不行，请看我的第三种终极解决方案

1.解决方法一

$HOME目录下的.m2目录下的settings.xml文件的profiles节点下添加如下信息。Jdk版本

<profile>   
    <id>jdk1.8</id>    
    <activation>   
        <activeByDefault>true</activeByDefault>    
        <jdk>1.8</jdk>   
    </activation>    
    <properties>   
        <maven.compiler.source>1.8</maven.compiler.source>    
        <maven.compiler.target>1.8</maven.compiler.target>    
        <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>   
    </properties>   
</profile>

2.解决方法二

在 build->pluginManager下添加，或修改maven-compiler-plugin的默认配置信息

<plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.7.0</version>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
    </configuration>
</plugin>

3.更新插件方法

必须前面两个方法都尝试了之后，还是无效的情况下。才可以。这时候，你必须考虑是不是你的IDE的问题了。笔者使用的是EclipseKepler版本，最高支持Jdk7。

点击进入EclipseMarketPlace，输入Maven

JavaTm 8 support for m2e for Eclipse Kepler SR2 ，安装就可以了，建议还是翻墙安装快些