摘要： http://www.codeproject.com/KB/system/usbeject.aspxhttp://www.uml.org.cn/http://en.wikipedia.org/wiki/Unified_Modeling_Languagehttp://www.cnblogs.com/mbskys/articles/640522.htmlhttp://www.ibm.com/developerworks/cn/rational/r-uml/ 阅读全文