在eclipse中安装了m2eclipse（maven插件）在安装后，出现下列警告：The Maven Integration requires that Eclipse be running in a JDK
详见：
http://cloudcode.tk/2011/11/the-maven-integration-requires-that-eclipse-be-running-in-a-jdk/
The fully error message that you might get is as follows:
The Maven Integration requires that Eclipse be running in a JDK, because a
number of Maven core plugins are using jars from the JDK.
Please make sure the -vm option in eclipse.ini is pointing to a JDK and verify
that Installed JREs are also using JDK installs.
To solve this problem add a new option into your eclipse.ini (which is located in your Eclipse installation folder):
-vm C:\Program Files\Java\jdk1.6.0_06\bin\javaw.exe
It is important to have this line on the correct location, otherwise Eclipse will have no clue about this setting:
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256M
-vm
C:\Program Files\Java\jdk1.6.0_06\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
It has to be before the -vmargs argument.