傳統的Java異常-捕獲機制已不能滿足當今大型企業級開發的要求。本文對Struts2提供的異常處理機制進行了研究和擴展，提出將檢查型（Checked）異常轉化為非檢查型
（Unchecked）異常進行捕獲的思想，通過采用AOP攔截器技術構造一種高效的異常處理機制，提高了代碼的可讀性，程序的執行速度和可維護性，減少了同類代碼的重復使用，避免了由于過量使用檢查型（Checked）異常引起的程序結構混亂、代碼邏輯復雜等缺陷。
關鍵詞：Java; struts2; 運行時異常; 檢查/非檢查性異常; AOP;
Abstract: This paper describes the study and extension in the exception handling mechanism
which is provides by Struts2, since the traditional Java exception try-catch mechanism has been unable to satisfy today's large-scale enterprise development. The paper proposes a capturing thought that transforms the inspected (Checked) exception to the non-inspected (Unchecked) exception. Using the AOP intercept technology to construct a kind of highly effective, unification exception handling mechanism, to enhance the code readability greatly, the performance and the maintainability of the program , thus reduce the similar codes redundant used, and avoid the excessive using inspection (Checked) exception causing program's chaotic structure, code's complex logic ,etc.
Key words: Java; struts2; runtime exception; checked/unchecked exception; AOP;