Json 遍歷和後臺json格式的傳遞

     var obj = [{ "name": "11", "password": "123456"},{ "name": "12", "password": "123456"}];
       
       // 是個object元素 下面使用each進行遍歷
      $.each(obj, function (n, value) {
           alert(n + ' ' + value.name);
       });    

     for(var i=0; i < obj.lenght; i++){

         alert(obj[i].name)

     }

    for(var p in obj){
        str = str+obj[p]+',';
        return str;
    }

後臺傳遞到前臺數據轉化爲json格式

String filepath = request.getParameter("filepath");

System.out.println(filepath);

List<Show> datalist = getShowData(filepath);

response.setContentType("appliction/json;charset=utf-8");
JSONArray jsonArray = JSONArray.fromObject(datalist);

try {

PrintWriter out = response.getWriter();
out.print(jsonArray);
for (int i = 0; i < jsonArray.size(); i++) {
System.out.println(jsonArray.get(i));
}
out.flush();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}