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br />    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">



 
   
   
    
   
    
   
   

   
       
       
           
                /Hello.jsp
            

        

   

   
        
           
        
        
            /default.jsp
        

    

   
    
   
   
       
           
                   /404.jsp
           

       

   

   
   
       
           
           
           
                /404.jsp
           

       

   


       
       
       
        action调用add方法添加用户
调用第一种action方法
                        method="add">
            
                /user_add_success.jsp
            

       
           
        
        URL动态传参调用相关的方法执行
调用第二种action方法,user定位到类,!后面跟方法名
        
            
                /user_add_success.jsp
            

        

   

   
   

        
         
    添加学生
    删除学生
    
不过,一定要遵守"约定优于配置"的原则

                        method="{1}">
            
                /Student{1}_success.jsp
            

       
                    两个**号匹配一切,------------------------------
       
    
不过,一定要遵守"约定优于配置"的原则
    添加老师
    删除老师
    添加课程
    删除课程
        
                        method="{2}">
            
                /{1}_{2}_success.jsp
            

        
    

   
               
                添加用户
               
                ModelDriven传值.默认是实现ModelDriven接口,实现getModel方法,
                然后在uri传值中,就可以不用在封装数据,会自动封装到实体类中,这个要在类中实例化实体类对象
                添加用户//封装到对象里面了,对象是谁new的?底层.....
                --------------------------
               
        
                    method="{2}">
            
                /{1}_{2}_success.jsp
            

        
    

   
   
            地址栏不显示要跳转的**.jsp   是同一个栈,是同一个线程内局部变量
    
        
       
            
            
            /r1.jsp
       

       
                地址栏显示**.jsp  就是跳转页面,没有经过action  
       
       
       
            /r2.jsp
       

       
                链式跳转,chain指定的是r1  意思是跳转到另一个action的name为r1的那个跳转页面,再由r1action 跳转到指定页面,地址栏不会显示**,jsp   可以跳转到action中,也可以直接跳转到一个jsp页面,但是action可以传参,但是jsp页面不可以传参   action的内容保存在valuestack中  jsp中属性在actioncontext中保存
        
       
       
            
            r1
            
       

   
    先跳转到action的name为r2的,再有那个action跳转到指定页面,地址栏显示**.jsp
    可以跳转到action中,也可以直接跳转到一个jsp页面,但是action可以传参,但是jsp页面不可以传参   action的内容保存在valuestack中  jsp中属性在actioncontext中保存
       
       
       
            r2
       

        
   

   
     
   
   
       
            /admin.jsp
        

   

   
    
        
         
       
            
            
            ${r}
       
        
   

   
   
        
       
            
            /user_success.jsp?t=${type}
       

        jsp中写法 :
        //访问action(valuestack值栈)中的t属性,(访问不到)因为上面跳转的是jsp,没有action,就没有t属性
        //访问jsp中(actioncontext(页面所有信息,相当于堆内存))的t属性,就能访问到
   



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