Maven

• 什么是构建工具？

  构建工具是将软件项目构建相关的过程自动化的工具。构建一个软件项目通常包含以下一个或多个过程：

  • 生成源码（如果项目使用自动生成源码）；
  • 从源码生成项目文档；
  • 编译源码；
  • 将编译后的代码打包成JAR文件或者ZIP文件；
  • 将打包好的代码安装到服务器、仓库或者其它的地方；

  有些项目可能需要更多的过程才能完成构建，这些过程一般也可以整合到构建工具中，因此它们也可以实现自动化。

  自动化构建过程的好处是将手动构建过程中犯错的风险降到最低。而且，自动构建工具通常要比手动执行同样的构建过程要快。

• http://ifeve.com/maven-1/
• • The sequence of steps which is defined in order to execute the tasks and goals of any maven project is known as build life cycle in maven. 

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• Maven 2.0 version is basically a build life cycle oriented and clearly says that these steps are well defined to get the desired output after the successful execution of the build life cycle.
• Maven comes with 3 built-in build life cycles as shown below :
• Clean - this phase involves cleaning of the project (for a fresh build & deployment)
• Default - this phase handles the complete deployment of the project
• Site - this phase handles the generating the java documentation of the project.

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https://www.wikitechy.com/tutorials/maven/maven-build-life-cycle