org.json.jar

org.json.jar(java转换)

json.js(js转换)

action:

  HttpServletRequest request = ServletActionContext.getRequest();
  HttpServletResponse response =ServletActionContext.getResponse();
  int id=Integer.parseInt(request.getParameter("id"));
  
   response.setContentType("application/json;charset=UTF-8");
   PrintWriter out = response.getWriter();

   List<Book> books = new ArrayList<Book>(); 
   Book b1 = new Book();
   b1.setId(1);
   b1.setName("book1");
   Book b2 = new Book();
   b2.setId(2);
   b2.setName("book2");
   books.add(b1);
   books.add(b2);
   Order order = new Order();
   order.setBooks(books);
   order.setCost(100.5f);
   order.setName("orderName");
   order.setDate(new Date(System.currentTimeMillis()));

     System.out.println(order.toJSONObject());
     out.print(order.toJSONObject());
     out.flush();
     out.close(); 

html:

function doTest(){
 alert(1);
 $.ajax({
     type: "post",//get也行 不知道为什么加了就不进action断点
     url:  "question!toModifQuestion.action",
     data: "id=5",
     dataType: "json",
     success:function(data){
      alert(1);
         alert(data.name);
         alert(data.date);
         alert(data.books[0].name);        
         //var json = eval(data); //eval("(" + data + ")");
            //$("#divAAA").empty();
            //$("#divAAA").html();
            $.each(data, function(idx, item) {
             alert(item.books[idx].name); 
            });
        
            $.each(albumData, function(i, n) {
             alert(n.AlbumName);
            });
           
            var obj = { one:1, two:2, three:3, four:4};
           $.each(obj, function(key, val) {
            alert(obj[key]);
           });
           
           var arr1 = [[1, 4, 3], [4, 6, 6], [7, 20, 9]]
            $.each(arr1, function(i, item){
                alert(item[0]);
            });
           
             var obj = { one:1, two:2, three:3, four:4};
               $.each(obj, function(key, val) {
               alert(obj[key]);
             });  
  },
  error: function(xhr,msg,e) {
   alert(e);
  }
 });
}