说明：  j2ee最佳实践和潜在难点，主要是蒋介J2EE相关技术和技术难点。指导读者了解J2EE技术概貌ppt。
(j2ee best practice and potential difficulties, mainly related to Chiang Kai-J2EE technology and technical difficulties. J2EE guiding readers to understand the technical picture ppt.)