Json文件存在，但服务器提供http 404状态

Question

给出的任务是页面加载，显示文件中的json数据。             我试图使用jquery，

访问.json文件中的数据

      I notice there is file studentinfo.json listed under sources-JsonTrial folder.

      No clue and this has eaten my full day at work..!! please some one help. 

        here is my json file: studentinfo.json  

     {"studentsjson":[
      { "name":"Henry  Lee", "course":"reading", "year":"2000", "grade":"3"},
      { "name":"John Flex", "course":"writing", "year":"2001", "grade":"4"},
      { "name":"Adam Debby", "course":"math", "year":"1999", "grade":"5"},
      { "name":"Louis Peter", "course":"Science", "year":"2000", "grade":"6"}
     ]
   }