web.xml文件的的param-name

 ̄綄美尐妖づ 提交于 2019-12-04 18:00:41

 第一个阶段

配置阶段  web.xml配置,如下图

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 第二个阶段

初始化阶段  init(ServletConfig config)

  • 1、加载配置文件 获取web.xml文件的的param-name
  • 2、扫描所有相关联的类 //配置文件的scanPackage = com...
  • 3、初始化所有相关的类,并且将其保存到IOC容器之中
  • 4、执行依赖注入(把加了@Autoidwired注解的字段赋值)
  • 5、构造HandlerMapping,将URL和Method进行关联

首先,创建一个类继承HttpServlet,重载doGet、doPost、init三个方法

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