java - 在 JNLP 中指定 'package' 属性有什么好处？

Question

我注意到您可以指定 <package /> JNLP 中的属性如下所述: http://lopica.sourceforge.net/ref.html#package

与让 applet 类加载器完成工作相比，显式定义它们有什么优势？

Answer 1

JSR-56 规范解释了原因:

http://jcp.org/aboutJava/communityprocess/mrel/jsr056/index5.html

4.5 Package Element

...

The package element only makes sense to use with lazily-downloaded resources, since all other resources will already be available to the JVM. Thus, it will already know what packages are implemented in those JAR files. However, it can direct the JNLP Client to download the right lazy JAR resources, instead of having to download each individual resource one at a time to check.