http://en.wikipedia.org/wiki/Dependency_injection
Martin Fowler
identifies three ways in which an object can get a reference to an
external module, according to the pattern used to provide the
dependency:
依照提供依赖项时使用的模式，Martin Fowler定义了三种对象可以从得到一个外部模块引用的方式：
- Type 1 or interface injection,
in which the exported module provides an interface that its users must
implement in order to get the dependencies at runtime (as introduced by
Borland Delphi and followed up by C++Builder and JBuilder[citation needed]).
- Type 2 or setter injection, in which the dependent module exposes a setter method which the framework uses to inject the dependency.
- Type 3 or constructor injection,
in which the dependencies are provided through the class constructor.
This is the main form used by PicoContainer, although it also supports
setter injection.
- 类型1 接口注入，外部模块提供一个接口，使用者必须实现此接口以在运行期得到依赖项（Borland Delphi引入，并在C++ Builder和JBuilder中继续运用）。
- 类型2 设置器注入，使用者暴露一个设置器方法，框架将使用此方法注入依赖项。
- 类型3 构造器注入，依赖项通过类构造函数提供。这是PicoContainer使用的主要方式（尽管它同时也支持设置器注入）。
The open source Yan Container[1] provides support for arbitrary types of injection[2] besides the common ones defined above.
除了前列的几种普通形式外，开源项目Yan Container还对任意形式的注入提供了支持。
Existing frameworks
现有框架
Dependency injection frameworks exist for a number of platforms and languages including:
在一些平台和语言中都有依赖注入框架，包括：
ActionScript
C++
ColdFusion
Delphi
Java
Java 2 Micro Edition
.NET
PHP4
PHP5
Perl
Python
Ruby
See also
参见
External links
外部链接
Retrieved from "http://en.wikipedia.org/wiki/Dependency_injection"
Categories: Software components | Software architecture
Hidden categories: Articles to be merged since June 2008 | Articles lacking in-text citations | All articles with unsourced statements | Articles with unsourced statements since July 2008