November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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120
｜
第
7
章
打包应用程序
Maven WAR
插件具有高度的可配置性。它使用嵌入式应用服务器插件
Jetty
（
http://bit.
ly/2IhEoLa
），可以轻松地包含和排除指定的
Java
类文件（或者其他文件）、创建瘦
WAR
文件（
http://bit.ly/2NGZybQ
），或者快速启动构建的
WAR
文件进行测试（
http://bit.
ly/2NICvgD
）。
避免
JAR
（和
WAR
）地狱
之前我们讨论过，如何使用
mvn dependency:tree
命令来查看项目中的依赖关系。
当我们在构建一个
WAR
文件，并将其部署到
GlassFish
、
WildFly
等应用程序服务
器的时候，服务器本身可能会将其他
JAR
文件加载到类路径中，从而与构件中所
含的依赖项发生冲突。
在这种情况下，即使应用程序无法启动，你还可以借助一个工具
—
JHades
（
http://
jhades.github.io/
），帮助你解决类路径的冲突问题。
在云平台上打包
当我们将
Java
应用程序部署到云平台时，可以先将构件打包在
OS
中，或者打包成
VM
原生构件，因为这样可以指定更细粒度的配置和部署指令，以及加入其他元数据。例
如，通过构建一个
Red Hat RPM Package Manager
文件（
RPM
文件）或者一个
Debian
Software Package
文件（
DEB
文件），你可以指定胖
JAR
在文件系统中的部署位置、创
建一个运行它的用户，以及指定安装配置。这为自动化安装提供了更大的空间，有助于
开发人员和运维人员之间的协作，同时可以收集所需的安装说明和过程信息。 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.