maven 中添加sqlserver 出错，报错内容
maven Missing artifact com.microsoft.sqlserver
解决方法这里先下载好jar包 ，然后maven命令执行。
将下载的好的jar包放在工程下面
在eclipse中执行maven命令
install:install-file -Dfile=sqljdbc4.jar -Dpackaging=jar -DgroupId=com.microsoft.sqlserver -DartifactId=sqljdbc4 -Dversion=4.0
执行：
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building example Maven Webapp 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-install-plugin:2.4:install-file (default-cli) @ example ---
[INFO] Installing E:\workspace\example\sqljdbc4.jar to C:\Users\tony\.m2\repository\com\microsoft\sqlserver\sqljdbc4\4.0\sqljdbc4-4.0.jar
[INFO] Installing C:\Users\tony\AppData\Local\Temp\mvninstall7821427790351823309.pom to C:\Users\tony\.m2\repository\com\microsoft\sqlserver\sqljdbc4\4.0\sqljdbc4-4.0.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.448 s
[INFO] Finished at: 2015-08-22T11:06:52+08:00
[INFO] Final Memory: 7M/153M
[INFO] ------------------------------------------------------------------------