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以Struts为例，理解JAVA中Abstract的作用

Abstract作为抽象类和抽象方法，主要还是在聚合子类的通用性上起到作用，往往出现在重构过程中自然而然形成的一种层次结构～希望将多个子类的通用方法和逻辑提取到父层的抽象类。这种重构情况的最极致表现就是：若再加入新的子类，子类只需要实现抽象类的abstract方法，而且可能就只用几句话的简单声明，或...

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struts Caused by: no protocol dtd - Class: java.net.URL

情景：项目使用了struts2框架，部署到tomcat中，而tomcat所在机器没有联网（处于公司安全方面的原因），所以启动tomcat时，报错： tomcat Unable to load configuration. - Class: Java.net.SocketInputStre...

下载 sdk struts java

<action name="sdkDownload" class="com.curiousby.sdkDownload">  <result ...

struts Caused by: no protocol dtd - Class: java.net.URL

情景：项目使用了struts2 框架，部署到tomcat中，而tomcat所在机器没有联网（处于公司安全方面的原因），所以启动tomcat时，报错： tomcat Unable to load configuration. - Class: java.net.SocketInputStream 因...

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更新时间 2024-02-10 09:30:05

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