異常分析：java.lang.reflect.InvocationTargetException 根因定位實戰

異常堆疊

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    ...
    at com.ssh.action.user.ArticleAction.showAllArticleForPage(ArticleAction.java:67)
    ...
Caused by: java.lang.Error: Unresolved compilation problem:
The method showAllArticleForPage(Integer) is undefined for the type ArticleService

根因

編譯錯誤**：`ArticleService` 介面/類中缺少 `showAllArticleForPage(Integer)` 方法定義，但 `ArticleAction` 呼叫了它。導致類載入階段拋 `Error`，被反射包裝為 `InvocationTargetException`。