Question

如何把数据转换成json格式

Answer 1

jsp页面的数据转换成json格式可以采用js来解析：
例如在ation中：
bookList = new ArrayList<Books>();
JSONObject json = new JSONObject();
json.accumulate("bookList", bookList);
json.accumulate("pageNum", pageNum);
json.accumulate("totalPages", totalPages);
json.accumulate("totalNum", totalNum);
jsonObj = json.toString();
jsonObj = {"totalNum":5,"bookList":[{"catGrade":null,"sourceCat":"xx","catProseries":"yy"}, {"catGrade":null,"sourceCat":"yy","catProseries":"xx"}],"totalPages":3,"pageNum":2}
js部分：
function(data){//回调函数
var json = eval("("+data+")"); //将数据转换成json类型
//此处获取
var bookList = json.bookList ;
alert(bookList[0].catGrade);
}

Answer 2