Deployment descriptor

最新推荐文章于 2024-12-25 10:26:59 发布

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最新推荐文章于 2024-12-25 10:26:59 发布

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本文深入解析部署描述符(DD)，一种用于配置部署到容器或引擎的工件的文件。特别介绍了Java平台企业版中，DD如何指导部署工具进行模块或应用的部署，包括特定容器选项、安全设置及配置需求。XML作为语法标准被广泛使用于这些文件中。

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A deployment descriptor (DD) refers to a configuration file for an artifact that is deployed to some container/engine.

In the Java Platform, Enterprise Edition, a deployment descriptor describes how a component, module or application (such as a web application or enterprise application) should be deployed.[1] It directs a deployment tool to deploy a module or application with specific container options, security settings and describes specific configuration requirements. XML is used for the syntax of these deployment descriptor files.

For web applications, the deployment descriptor must be called web.xml and must reside in the WEB-INF directory in the web application root. For Java EE applications, the deployment descriptor must be named application.xml and must be placed directly in the META-INF directory at the top level of the application .ear file.

In Java EE, there are two types of deployment descriptors: “Java EE deployment descriptors” and “runtime deployment descriptors”.[1] The Java EE deployment descriptors are defined by the language specification,[2] whereas the runtime descriptors are defined by the vendor of each container implementation. For example, the web.xml file is a standard Java EE deployment descriptor, specified in the Java Servlet specification, but the sun-web.xml file contains configuration data specific to the Sun GlassFish Enterprise Server implementation.[3]

Reference:
https://en.wikipedia.org/wiki/Deployment_descriptor