压缩java libs替代pack200和jnlp [英] compress java libs alternative pack200 and jnlp

问题描述

您好，我有一个很大的应用程序，我使用jnlp文件从网上启动我的应用程序，然后使用pack200来压缩它，并且下载速度更快。但是，由于我的应用程序变得越来越大（大约35-45mb），有时候pack200只是挂出，或者有时候，jnlp下载器挂出，jnlp和pack200有更好的选择吗？

Hello, i have a big application, i launch my app from the web using a jnlp file, and pack200 to compress it, and download faster. But since my app is getting bigger (about 35-45mb), some times pack200 just hang out, or some times, the jnlp downloader hang out, is there an alternative better to jnlp and pack200?

推荐答案

Pack200和deflate是java开箱即用的唯一支持。虽然您可以编写从其他存档格式（如BZip2或7z（LZMA）读取的 Classloader ，但它需要存在于启动存根小程序中，其中包含Classloader，下载包含主应用程序的存档，从中加载类并启动应用程序。



使用Bzip2或LZMA，您可以获得比pack200更好的压缩率，高达~50％



参见 this [ ^ ]



它解释了如何从jar加载，但可以使用相同的方法加载其他类型的档案，看看Apache的Commons Compress，它对各种档案类型提供了很好的支持。



好​​运！

Pack200 and "deflate" are the only ones that are supported in java out-of-the-box. Though you can write a Classloader that reads from other archive format such as BZip2 or 7z (LZMA), it requires to be present in a start-up stub applet, that contains the Classloader, downloads the archive containing main application, loads the classes from it and starts the app.

With Bzip2 or LZMA, you can get a better compression ratio than pack200, upto ~50%

See this[^]

It explains how to load from a jar, but same approach can be used to load from other types of archives too, take a look at Apache's Commons Compress, it has nice support for various archive types.

Good Luck!

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