在eclipse中使用m2e构建maven项目-可能遇到的问题

逃离我推掉我的手 2022-07-19 01:12 275阅读 0赞

## 准备工作 ##

首先你需要在准备本地maven仓库，如果没有请参考文章

[http://blog.csdn.net/bestcxx/article/details/52126907][http_blog.csdn.net_bestcxx_article_details_52126907]

## 1、eclipse中下载m2e插件 ##

请参考   http://blog.csdn.net/bestcxx/article/details/52126907

## 2、打开eclipse ##

file->new->other

搜索MAVEN，选择Maven Project

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## 3、选择工作空间 ##

![Center 1][]

## 4、选择archetypes ##

这里可能会报错，请看本文末尾可能出现的问题以及解决办法

如果正常，选择 Artifact ID 为 maven-archetype-quickstart 的，然后选择next

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## 5、确定maven的项目名，组名，版本号，工作空间的首个package ##

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字段含义，请参考 http://blog.csdn.net/bestcxx/article/details/52142127

## 6、结束，查看项目结构 ##

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## 7、可能遇到的问题以及解决办法 ##

### 问题1： ###

\-Dmaven.multiModuleProjectDirectory system property is not set. Check $M2\_HOME environment variable and mvn   
  
  
script match.  
  
  
答案：  
Window->Preference->Java->Installed JREs->Edit  
在Default VM arguments中设置  
\-Dmaven.multiModuleProjectDirectory=$M2\_HOME

### 问题2： ###

错误: 找不到或无法加载主类 D:\\apache-maven-3.3.9  
答案：说明没有指定编译后 .class 文件存放的路径，所以在run java application报"错误: 找不到或无法加载主类"。手动创建class文件夹，有可能默认的是build文件夹

### 问题3： ###

Unknown lifecycle phase "mvn". You must specify a valid lifecycle phase or a goal in the format <plugin-  
  
  
prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>\[:<plugin-version>\]:<goal>. Available lifecycle phases   
  
  
are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile,   
  
  
process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources,   
  
  
test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test,   
  
  
post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site,   
  
  
site-deploy. -> \[Help 1\]  
答案：使用eclipse 集成环境，集成了mvn，去掉mvn前缀

### 问题4： ###

An internal error occurred during: "Retrieving archetypes:".  
Java heap space  
答案：  
http://blog.csdn.net/yidragon88xx/article/details/42521493

### 问题5： ###

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

将eclipse的jdk配置为jdk而不是jre,项目的也做更改

### 问题6： ###

Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project nexus: Failed to deploy artifacts: Could not transfer artifact stu.bestcxx.mavenssh:nexus:jar:0.0.1-20161106.102802-1 from/to snapshots (http://localhost:8081/nexus/content/repositories/snapshots/): Failed to transfer file: http://localhost:8081/nexus/content/repositories/snapshots/stu/bestcxx/mavenssh/nexus/0.0.1-SNAPSHOT/nexus-0.0.1-20161106.102802-1.jar. Return code is: 401, ReasonPhrase: Unauthorized. -> \[Help 1\]  
\[ERROR\]   
  
密码不正确，看settings.xml中是否配置了servers，用户名和密码是否正确，id是否和pom.xml统一

### 问题7： ###

Exception in thread "main" java.lang.UnsupportedClassVersionError: org/apache/maven/cli/MavenCli : Unsupported major.minor version 51.0

原因是jdk版本不对，需要看eclipse项目、eclipse工作空间已经maven运行的vm的jdk是否正确，最好刷新一下

### 问题8： ###

please make sure the -vm option in eclipse.ini is pointing to a JDK and ...

![20161106221443121][]

在eclipse的安装目录下找到eclipse.ini文件，增加

\-vm

你的jdk的javax.exe的路径

如下

-vm
    C:\Program Files (x86)\Java\jdk1.7.0_04\jre\bin\javaw.exe
    -vmargs
    -Dosgi.requiredJavaVersion=1.5
    -Xms512m
    -Xmx1024m

[http_blog.csdn.net_bestcxx_article_details_52126907]: http://blog.csdn.net/bestcxx/article/details/52126907
[Center]: /images/20220718/eb1c42cec30a4ae68432a907cb35c75e.png
[Center 1]: /images/20220718/e26bcb6737844357be427ff5293adcfa.png
[Center 2]: /images/20220718/0ed47a3ce5f44ae6bbd455efb5a76387.png
[Center 3]: /images/20220718/94c713b09ecc4c24b32fa509fa7c7cc7.png
[Center 4]: /images/20220718/9bedb1218341435ba32ff8b04b749281.png
[20161106221443121]: /images/20220718/26d243b113b740a6b57dd71635dc251c.png