Apache Commons概览（备查）

╰半橙微兮° 2022-05-22 04:09 179阅读 0赞

在Java社区，有那么一小撮人，觉得Java API还不足用，至少还不够好用，就起了给增强Java API的念头，于是Apache Commons项目诞生了。为了便于被使用，Apache Commons项目采用了与Java API的包一致的方式组织，于是出现了一系列子项目。

伴随着Apache Commons项目的发展，有些子项目保持了顽强的生命力，而有些则慢慢沦为弃子，还有些新的子项目不断产生。于是，Apache Commons项目首先被分为如下3个独立的组件库：

*  Apache Commons Sandbox，Java组件开发的试验空间
 *  Apache Commons Dormant，遗留Java组件库（不建议使用）
 *  Apache Commons Proper，Java组件库

事实上，大家开发过程中，通常能够想起来的都属于Apache Commons Proper库，这也是我们后续要讨论的库。所以，默认提到Apache Commons项目都是指Apache Commons Proper库中的组件。

Apache Commons Proper库中的组件都是以子项目的形式组织，列表如下：

<table style="max-width:100%;background-color:rgb(255,255,255);border-collapse:separate;border-spacing:0px;width:1802.22px;margin-bottom:20px;border-width:1px 1px 1px 0px;border-top-style:solid;border-right-style:solid;border-bottom-style:solid;border-top-color:rgb(221,221,221);border-right-color:rgb(221,221,221);border-bottom-color:rgb(221,221,221);color:rgb(51,51,51);font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13.3333px;"> 
 <tbody> 
 <tr> 
 <th style="line-height:20px;vertical-align:top;border-top:0px;background-color:rgb(249,249,249);">Components</th> 
 <th style="line-height:20px;vertical-align:top;border-top:0px;background-color:rgb(249,249,249);">Description</th> 
 <th style="line-height:20px;vertical-align:top;border-top:0px;background-color:rgb(249,249,249);">Latest Version</th> 
 <th style="line-height:20px;vertical-align:top;border-top:0px;background-color:rgb(249,249,249);">Released</th> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-bcel/" style="color:rgb(0,136,204);" rel="nofollow">BCEL</a></td> 
 <td style="line-height:20px;vertical-align:top;">Byte Code Engineering Library - analyze, create, and manipulate Java class files</td> 
 <td style="line-height:20px;vertical-align:top;">6.2</td> 
 <td style="line-height:20px;vertical-align:top;">2017-11-08</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-beanutils/" style="color:rgb(0,136,204);" rel="nofollow">BeanUtils</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Easy-to-use wrappers around the Java reflection and introspection APIs. 为Java Bean的动态属性（运行时才确定的属性）提供getter/setter方法。 主要工具类：PropertyUtils（推荐），BeanUtils</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.9.3</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2016-09-26</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-bsf/" style="color:rgb(0,136,204);" rel="nofollow">BSF</a></td> 
 <td style="line-height:20px;vertical-align:top;">Bean Scripting Framework - interface to scripting languages, including JSR-223</td> 
 <td style="line-height:20px;vertical-align:top;">3.1</td> 
 <td style="line-height:20px;vertical-align:top;">2010-06-24</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-chain/" style="color:rgb(0,136,204);" rel="nofollow">Chain</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Chain of Responsibility&nbsp;pattern implemention.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.2</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2008-06-02</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-cli/" style="color:rgb(0,136,204);" rel="nofollow">CLI</a></td> 
 <td style="line-height:20px;vertical-align:top;">Command Line arguments parser.</td> 
 <td style="line-height:20px;vertical-align:top;">1.4</td> 
 <td style="line-height:20px;vertical-align:top;">2017-03-09</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-codec/" style="color:rgb(0,136,204);" rel="nofollow">Codec</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">General encoding/decoding algorithms (for example phonetic, base64, URL).</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.11</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-10-20</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-collections/" style="color:rgb(0,136,204);" rel="nofollow">Collections</a></td> 
 <td style="line-height:20px;vertical-align:top;">Extends or augments the Java Collections Framework.</td> 
 <td style="line-height:20px;vertical-align:top;">4.1</td> 
 <td style="line-height:20px;vertical-align:top;">2015-11-27</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-compress/" style="color:rgb(0,136,204);" rel="nofollow">Compress</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Defines an API for working with tar, zip and bzip2 files.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.17</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2018-06-03</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-configuration/" style="color:rgb(0,136,204);" rel="nofollow">Configuration</a></td> 
 <td style="line-height:20px;vertical-align:top;">Reading of configuration/preferences files in various formats.</td> 
 <td style="line-height:20px;vertical-align:top;">2.2</td> 
 <td style="line-height:20px;vertical-align:top;">2017-10-12</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-crypto/" style="color:rgb(0,136,204);" rel="nofollow">Crypto</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">A cryptographic library optimized with AES-NI wrapping Openssl or JCE algorithm implementations.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.0.0</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2016-07-22</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-csv/" style="color:rgb(0,136,204);" rel="nofollow">CSV</a></td> 
 <td style="line-height:20px;vertical-align:top;">Component for reading and writing comma separated value files.</td> 
 <td style="line-height:20px;vertical-align:top;">1.5</td> 
 <td style="line-height:20px;vertical-align:top;">2017-09-03</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-daemon/" style="color:rgb(0,136,204);" rel="nofollow">Daemon</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Alternative invocation mechanism for unix-daemon-like java code.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.0.15</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2013-04-03</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-dbcp/" style="color:rgb(0,136,204);" rel="nofollow">DBCP</a></td> 
 <td style="line-height:20px;vertical-align:top;">Database connection pooling services.</td> 
 <td style="line-height:20px;vertical-align:top;">2.3.0</td> 
 <td style="line-height:20px;vertical-align:top;">2018-05-12</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-dbutils/" style="color:rgb(0,136,204);" rel="nofollow">DbUtils</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">JDBC helper library.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.7</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-07-20</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-digester/" style="color:rgb(0,136,204);" rel="nofollow">Digester</a></td> 
 <td style="line-height:20px;vertical-align:top;">XML-to-Java-object mapping utility.</td> 
 <td style="line-height:20px;vertical-align:top;">3.2</td> 
 <td style="line-height:20px;vertical-align:top;">2011-12-13</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-email/" style="color:rgb(0,136,204);" rel="nofollow">Email</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Library for sending e-mail from Java.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.5</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-08-01</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-exec/" style="color:rgb(0,136,204);" rel="nofollow">Exec</a></td> 
 <td style="line-height:20px;vertical-align:top;">API for dealing with external process execution and environment management in Java.</td> 
 <td style="line-height:20px;vertical-align:top;">1.3</td> 
 <td style="line-height:20px;vertical-align:top;">2014-11-06</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-fileupload/" style="color:rgb(0,136,204);" rel="nofollow">FileUpload</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">File upload capability for your servlets and web applications.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.3.3</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-06-13</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-functor/" style="color:rgb(0,136,204);" rel="nofollow">Functor</a></td> 
 <td style="line-height:20px;vertical-align:top;">A functor is a function that can be manipulated as an object, or an object representing a single, generic function.</td> 
 <td style="line-height:20px;vertical-align:top;">1.0</td> 
 <td style="line-height:20px;vertical-align:top;">2011-??-??</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-geometry/" style="color:rgb(0,136,204);" rel="nofollow">Geometry</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Space and coordinates.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.0</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2018-??-??</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-imaging/" style="color:rgb(0,136,204);" rel="nofollow">Imaging (previously called Sanselan)</a></td> 
 <td style="line-height:20px;vertical-align:top;">A pure-Java image library.</td> 
 <td style="line-height:20px;vertical-align:top;">0.97-incubator</td> 
 <td style="line-height:20px;vertical-align:top;">2009-02-20</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-io/" style="color:rgb(0,136,204);" rel="nofollow">IO</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Collection of I/O utilities.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2.6</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-10-15</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-jci/" style="color:rgb(0,136,204);" rel="nofollow">JCI</a></td> 
 <td style="line-height:20px;vertical-align:top;">Java Compiler Interface</td> 
 <td style="line-height:20px;vertical-align:top;">1.1</td> 
 <td style="line-height:20px;vertical-align:top;">2013-10-14</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-jcs/" style="color:rgb(0,136,204);" rel="nofollow">JCS</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Java Caching System</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2.2</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-08-02</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-jelly/" style="color:rgb(0,136,204);" rel="nofollow">Jelly</a></td> 
 <td style="line-height:20px;vertical-align:top;">XML based scripting and processing engine.</td> 
 <td style="line-height:20px;vertical-align:top;">1.0.1</td> 
 <td style="line-height:20px;vertical-align:top;">2017-09-27</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-jexl/" style="color:rgb(0,136,204);" rel="nofollow">Jexl</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Expression language which extends the Expression Language of the JSTL.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">3.1</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-04-14</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-jxpath/" style="color:rgb(0,136,204);" rel="nofollow">JXPath</a></td> 
 <td style="line-height:20px;vertical-align:top;">Utilities for manipulating Java Beans using the XPath syntax.</td> 
 <td style="line-height:20px;vertical-align:top;">1.3</td> 
 <td style="line-height:20px;vertical-align:top;">2008-08-14</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-lang/" style="color:rgb(0,136,204);" rel="nofollow">Lang</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Provides extra functionality for classes in java.lang. Lang 3.0开始使用commons-lang3的构件名称。 主要工具类：StringUtils，&nbsp;ArrayUtils</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">3.7</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-11-08</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-logging/" style="color:rgb(0,136,204);" rel="nofollow">Logging</a></td> 
 <td style="line-height:20px;vertical-align:top;">Wrapper around a variety of logging API implementations.</td> 
 <td style="line-height:20px;vertical-align:top;">1.2</td> 
 <td style="line-height:20px;vertical-align:top;">2014-07-11</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-math/" style="color:rgb(0,136,204);" rel="nofollow">Math</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Lightweight, self-contained mathematics and statistics components.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">3.5</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2015-04-17</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-net/" style="color:rgb(0,136,204);" rel="nofollow">Net</a></td> 
 <td style="line-height:20px;vertical-align:top;">Collection of network utilities and protocol implementations.</td> 
 <td style="line-height:20px;vertical-align:top;">3.6</td> 
 <td style="line-height:20px;vertical-align:top;">2017-02-15</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-numbers/" style="color:rgb(0,136,204);" rel="nofollow">Numbers</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Number types (complex, quaternion, fraction) and utilities (arrays, combinatorics).</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.0</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-??-??</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-ognl/" style="color:rgb(0,136,204);" rel="nofollow">OGNL</a></td> 
 <td style="line-height:20px;vertical-align:top;">An Object-Graph Navigation Language</td> 
 <td style="line-height:20px;vertical-align:top;">4.0</td> 
 <td style="line-height:20px;vertical-align:top;">2013-??-??</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-pool/" style="color:rgb(0,136,204);" rel="nofollow">Pool</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Generic object pooling component.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2.5.0</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-12-19</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-proxy/" style="color:rgb(0,136,204);" rel="nofollow">Proxy</a></td> 
 <td style="line-height:20px;vertical-align:top;">Library for creating dynamic proxies.</td> 
 <td style="line-height:20px;vertical-align:top;">1.0</td> 
 <td style="line-height:20px;vertical-align:top;">2008-02-28</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-rdf/" style="color:rgb(0,136,204);" rel="nofollow">RDF</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Common implementation of RDF 1.1 that could be implemented by systems on the JVM.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">0.3.0-incubating</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2016-11-15</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-rng/" style="color:rgb(0,136,204);" rel="nofollow">RNG</a></td> 
 <td style="line-height:20px;vertical-align:top;">Implementations of random numbers generators.</td> 
 <td style="line-height:20px;vertical-align:top;">1.0</td> 
 <td style="line-height:20px;vertical-align:top;">2016-12-13</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-scxml/" style="color:rgb(0,136,204);" rel="nofollow">SCXML</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">An implementation of the State Chart XML specification aimed at creating and maintaining a Java SCXML engine. It is capable of executing a state machine defined using a SCXML document, and abstracts out the environment interfaces.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">0.9</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2008-12-01</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-statistics/" style="color:rgb(0,136,204);" rel="nofollow">Statistics</a></td> 
 <td style="line-height:20px;vertical-align:top;">Statistics.</td> 
 <td style="line-height:20px;vertical-align:top;">0.1</td> 
 <td style="line-height:20px;vertical-align:top;">????-??-??</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-text/" style="color:rgb(0,136,204);" rel="nofollow">Text</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Apache Commons Text is a library focused on algorithms working on strings. 处理文本（非字符串）</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">1.3</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2018-03-21</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-validator/" style="color:rgb(0,136,204);" rel="nofollow">Validator</a></td> 
 <td style="line-height:20px;vertical-align:top;">Framework to define validators and validation rules in an xml file.</td> 
 <td style="line-height:20px;vertical-align:top;">1.6</td> 
 <td style="line-height:20px;vertical-align:top;">2017-02-21</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);"><a href="http://commons.apache.org/proper/commons-vfs/" style="color:rgb(0,136,204);" rel="nofollow">VFS</a></td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system.</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2.2</td> 
 <td style="line-height:20px;vertical-align:top;background-color:rgb(249,249,249);">2017-10-06</td> 
 </tr> 
 <tr> 
 <td style="line-height:20px;vertical-align:top;"><a href="http://commons.apache.org/proper/commons-weaver/" style="color:rgb(0,136,204);" rel="nofollow">Weaver</a></td> 
 <td style="line-height:20px;vertical-align:top;">Provides an easy way to enhance (weave) compiled bytecode.</td> 
 <td style="line-height:20px;vertical-align:top;">1.3</td> 
 <td style="line-height:20px;vertical-align:top;">2016-10-18</td> 
 </tr> 
 </tbody> 
</table>

参考链接：

http://commons.apache.org/