如何在Eclipse中配置m2e/Installed maven中的toolchains插件

Question

目前，我使用的是安装在windows机器中的maven（Apache maven 3.3.9)&Java(Java版本:1.8.0_91)。我有一个java应用程序，它是使用java版本1.6.0_31开发的。

由于Apache maven(3.3.9)与以前的Java版本（1.8之前的版本）不直接兼容，所以我包含了toolchains插件来编译和运行Java1.6的项目。我可以使用命令提示符成功构建。

但是，当我尝试使用eclipse和eclipse m2e插件构建相同的项目时，或者使用eclipse->Windows->Preferences->maven->Installations添加外部maven(3.3.9)时，我会遇到以下错误。

[WARNING] 
[WARNING] Some problems were encountered while building the effective settings
[WARNING] Expected root element 'settings' but found 'toolchains' (position: START_TAG seen ...OOLCHAINS/1.1.0 http://maven.apache.org/xsd/toolchains-1.1.0.xsd">... @45:114)  @ U:\POC\Repo\.m2\toolchains.xml, line 45, column 114
[WARNING] 
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Replenishment Maven Webapp 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ Replenishment ---
[INFO] Deleting C:\Users\xagh9\workspace\Replenishment\target
[INFO] 
[INFO] --- maven-toolchains-plugin:1.1:toolchain (default) @ Replenishment ---
[INFO] Required toolchain: jdk [ vendor='sun' version='1.6' ]
[ERROR] No toolchain found for type jdk
[ERROR] Cannot find matching toolchain definitions for the following toolchain types:
jdk [ vendor='sun' version='1.6' ]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.105 s
[INFO] Finished at: 2017-01-04T12:02:08+11:00
[INFO] Final Memory: 8M/116M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-toolchains-plugin:1.1:toolchain (default) on project Replenishment: Cannot find matching toolchain definitions for the following toolchain types:
[ERROR] jdk [ vendor='sun' version='1.6' ]
[ERROR] Please make sure you define the required toolchains in your ~/.m2/toolchains.xml file.
[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

注意：使用java_1.8我可以在没有toolchains插件的情况下成功构建项目。但是随着工具链插件的配置，我面临着这个问题。有人能帮我解决这个问题吗。

所需的toolchains.xml既存在于maven config文件夹中，也存在于存储库的。m2文件夹中

Answer 1

在eclipse运行配置中更改目标后解析的如下所示。

问题是eclipse不能自动读取toolchains.xml。我们必须在目标中手动指定。我通过引用this链接解决了这个问题