spring 3.1.1 build from source

1.下载源码zip:https://github.com/spring-projects/spring-framework/tree/v3.1.1.RELEASE

2.说明：
https://github.com/spring-projects/spring-framework/wiki/Building-from-source
http://spring.io/blog/2009/03/03/building-spring-3/

3.仔细阅读spring-framework-3.1.1.RELEASE\build-spring-framework/readme.txt.

4.可能出现unit test failed 导致 build failed。参照readme.txt直接 ant jar package跳过unit test。然后删除spring-framework-3.1.1.RELEASE\build-spring-framework\target目录。

5.按照http://spring.io/blog/2009/03/03/building-spring-3/进行后续步骤

6.导入后可能会出现提示某些jar包找不到，原因是ivy未成功下载，可以手动补齐