Could not find artifact com.sun:tools:jar:1.5.0

【maven package】，则依然报错，但报的是另外一个错误：
[INFO] Scanning for projects…[INFO]                                          
[INFO] Building Struts 2 Blank Webapp 1.0-SNAPSHOT[INFO]
[INFO] BUILD FAILURE[INFO]
[INFO] Total time: 0.547s[INFO] Finished at: Wed Apr 13 13:09:48 CST 2011[INFO] Final Memory: 2M/4M[INFO]
[ERROR] Failed to execute goal on project my_struts: Could not resolve dependencies for project ricki.cheung.struts:my_struts:war:1.0-SNAPSHOT: Could not
find artifact com.sun:tools:jar:1.5.0 at specified path C:\Program Files\Java\jre1.6.0_01/../lib/tools.jar -> [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/DependencyResolutionException

后在网上查找解决方法，有外国网友说，在pom.xml添加如下依赖即可：
<dependencies>
<dependency>
<groupId>com.sun</groupId>
<artifactId>tools</artifactId>
<version>1.5.0</version>
<scope>system</scope>
<systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>
</dependencies>

不过，我试过还是不行，另一个外国网友说，把eclipse中的【Windows】-【Preferences】-【Java】-【Install JREs】改为JDK，而不用JRE，如下图所示：

虽然我勾选了JDK，但还是报错，看了错误，发现在 C:\Program Files\Java\jre1.6.0_01/../lib/tools.jar无法找到tools:jar，这让我有点纳闷了，明明已经选了使用JDK了，怎么还去JRE那里找呢，于是我把【Windows】-【Preferences】-【Java】-【Install JREs】中的JRE给remove掉，再次【maven package】就OK了。