Struts2实现Preparable接口和【struts2】继承ActionSupport类

Struts2实现Preparable接口
　　实现preparable接口，实现public void prepare() throws Exception 方法。当你访问某问action指定方法之前，最先执行prepare()。这里边可以写些准备工作的代码

1 public void prepare() throws Exception {
2         
3         request = ServletActionContext.getRequest();
4         requestIp = getIpAddr(request);
5         response = ServletActionContext.getResponse();
6         session = request.getSession();
7         application = ServletActionContext.getServletContext();
8     }

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