簡介¶

• @since Servlet 3.0
• web容器啟動時，給第3方初始化機會
• 新增檔案，META-INF/services/javax.servlet.ServletContainerInitializer
• 裡面放，package.ClassName，ex: org.springframework.web.WebApplicationInitializer

內容¶

• ServletContainerInitializers (SCIs) are registered via an entry in the file META-INF/services/javax.servlet.ServletContainerInitializer that must be included in the JAR file that contains the SCI implementation.

public interface ServletContainerInitializer {
    void onStartup(Set<Class<?>> c, ServletContext ctx) throws ServletException;
}

org.springframework.web.SpringServletContainerInitializer implements ServletContainerInitializer¶

• javax.servlet.annotation.HandlesTypes

參考資料¶

Spring之WebContext不使用web.xml啟動 初始化重要的類源碼分析（Servlet3.0以上的）

Servlet3.0 - ServletContainerInitializer注册JAVA组件