/pages/student/student-edit.jsp
       			
       
        /pages/student/student-list.jsp
       			
       
        /pages/student/student-list.jsp
       			
       
        /pages/student/student-list.jsp
       			
       				
        studentAdd			
       		
      	
     
    

因为没有继承json-default，导致再加入result type="json"属性时，启动tomcat控制台报错：Exception starting filter struts2 Unable to load configuration. - action

解决方法：

package extends要继承json-default