Apache Commons

您可以在Wikipedia上了解到此条目的英文信息 Apache Commons Thanks, Wikipedia.

Apache Commons 是 Java 项目公共、可重用的基础类库。

包括：

• Attributes: Runtime API to metadata attributes such as doclet tags.
• BeanUtils: Easy-to-use wrappers around the Java reflection and introspection APIs.
• Betwixt: Services for mapping JavaBeans to XML documents, and vice versa.
• Chain: Chain of Responsibility pattern implemention.
• CLI: Command Line arguments parser.
• Codec: General encoding/decoding algorithms (for example phonetic, base64, URL).
• Collections: Extends or augments the Java Collections Framework.
• Compress: Defines an API for working with tar, zip and bzip2 files.
• Configuration: Reading of configuration/preferences files in various formats.
• Daemon: Alternative invocation mechanism for unix-daemon-like java code.
• DBCP: Database connection pooling services.
• DbUtils: JDBC helper library.
• Digester: XML-to-Java-object mapping utility.
• Discovery: Tools for locating resources by mapping service/reference names to resource names.
• EL: Interpreter for the Expression Language defined by the JSP 2.0 specification.
• Email: Library for sending e-mail from Java.
• Exec: API for dealing with external process execution and environment management in Java.
• FileUpload: File upload capability for your servlets and web applications.
• IO: Collection of I/O utilities.
• JCI: Java Compiler Interface
• Jelly: XML based scripting and processing engine.
• Jexl: Expression language which extends the Expression Language of the JSTL.
• JXPath: Utilities for manipulating Java Beans using the XPath syntax.
• Lang: Provides extra functionality for classes in java.lang.
• Launcher: Cross platform Java application launcher.
• Logging: Wrapper around a variety of logging API implementations.
• Math: Lightweight, self-contained mathematics and statistics components.
• Modeler: Mechanisms to create Model MBeans compatible with JMX specification.
• Net: Collection of network utilities and protocol implementations.
• Pool: Generic object pooling component.
• Primitives: Smaller, faster and easier to work with types supporting Java primitive types.
• Proxy: Library for creating dynamic proxies.
• Sanselan: A pure-Java image library.
• SCXML: 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.
• Transaction: Implementations for multi level locks, transactional collections and transactional file access.
• Validator: Framework to define validators and validation rules in an xml file.
• VFS: Virtual File System component for treating files, FTP, SMB, ZIP and such like as a single logical file system.

链接

• Apache Commons主页