javaee strut2 第一回

1.类Servlet API解析:｛
       ActionContext类｛
          ActionContext acx=Action.getContext();
         类Session： acx.getContext().getSession().put(key,value);
         类Request：acx.put(key,value);
         类Application：acx.getApplication().put(key,value);
                        }
                      }
2.直接调用Servlet API：{
       实现三个接口：ServletResponseAware，
                     ServletRequestAware，
                     ServletContextAware
         定义三个数据：private HttpServletRequest request;
                       private HttpServletResponse response;
                       private ServletContext context;
        实现三个借口函数：
                        public void setServletContext(ServletContext context) {
  this.context=context;
  
 }
 public void setServletRequest(HttpServletRequest request) {
  this.request=request;
  
 }
 public void setServletResponse(HttpServletResponse response) {
  this.response=response;
  
 }
   实现了这三步便可自由调用Servlet API；
                  ｝
3.动态调用（不同操作调用同一类里的不同函数）：
{
  View代码：
 <form action="Login.action" method="post">
   User:<input type="text" name="user" /><br/>
   Pwd: <input type="password" name="pwd" /><br/>
   <input type="submit" value="Submit" />
   <input type="button" value="注册" onclick="regin()"/>
   </form>
   <script type="text/javascript">
   function regin(){
  
   tagerForm=document.forms[0];
   tagerForm.action="Regin!regin.action";
   tagerForm.submit();
  
   }

strut.xml代码：
<action name="Login" class="actions.LoginAction">

<result name="success">/success.jsp</result>
<result name="fail">/fail.jsp</result>
</action>
<action name="Regin" class="actions.LoginAction" method="regin">
<result name="success">/regin.jsp</result>

Servlet代码：
    public class LoginAction
     ｛
    public String regin()
          {
  
  ActionContext.getContext().put("user", getUser());
  
  return "success";
    }
public String execute() throws Exception
   {
          ｝

       ｝
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