Question

我试图在android中解析此json数据：

<script type="text/javascript">

$(document).ready(function(){
    var category = document.getElementById("category").value;

    $.ajax({
        type:'POST',
        url:'<?=base_url();?>dashboard/ajaxData',
        data:'main_category='+category,
        success:function(html){
        $('#services').html(html);
        }
    }); 
    $('#category').on('change',function(){
        var category = $(this).val();
        if(category){
            $.ajax({
                type:'POST',
                url:'<?=base_url();?>dashboard/ajaxData',
                data:'main_category='+category,
                success:function(html){
                    $('#services').html(html);
                }
            }); 
        }else{
            $('#services').html('<option value="">Select category first</option>');
        }
    });

});
    var x = $("#services").find(':selected').attr('data-price');
    document.getElementById("demo").innerHTML = x;

</script>


        <div class="form-group">
            <label>Category</label>

            <select name="category" id="category" class="form-control">
                <?php foreach($categories->result() as $cat): ?>
                <option data-price="55" value="<?=$cat->id;?>">- <?=$cat->title;?></option>
                <?php endforeach; ?>
            </select>
        </div>  

        <div class="form-group">
            <label>Service</label>

            <select name="service" id="services" class="form-control">
            <option data-price=""></option>
            </select>
        </div>  
<div id="demo"></div>

这是android volley代码

{
    "status": true,
    "data": [{
            "id": 1,
            "name": "test",
            "notes": "notes",
            "types": [{
                    "id": 2,
                    "name": "cases",
                    "created_at": "2018-06-09 07:36:52",
                    "updated_at": "2018-06-09 07:36:52",
                    "pivot": {
                        "trip_id": 1,
                        "type_id": 2
                    }
                }, {
                    "id": 3,
                    "name": "bags",
                    "created_at": "2018-06-09 07:42:13",
                    "updated_at": "2018-06-09 07:42:13",
                    "pivot": {
                        "trip_id": 1,
                        "type_id": 3
                    }
                }
            ],
            "user": {
                "id": 1,
                "name": "admin",
                "email": "admin@gmail.com",
                "group_id": 1,
                "api_token": "toOarWXv2VezUxoXaoGbKdvtr3pBYmkv68cI7gxDMxgKoYjnKeiYSzrGqOr2",
                "created_at": "2018-04-26 20:16:28",
                "updated_at": "2018-04-26 20:16:28"
            },
            "date": "2018/06/20",
            "time": "11:50 AM",
            "fromcountry_id": 1,
            "tocountry_id": 1,
            "fromcity_id": 1,
            "tocity_id": 1,
            "estimated_time": "hjk"
        }
    ],
    "error": ""
}

响应变量真正返回值，但是用json进行的解析不起作用..怎么了？

Answer 1

您的JSON解析错误

您的new JSONObject().get("Data")为空

像下面的代码一样更改您的JSON解析

使用此

JSONObject jsonObject= new JSONObject(response);
JSONArray jsonArray =jsonObject.getJSONArray("data");

代替此

JSONArray jsonArray = new JSONArray(new JSONObject().get("Data"));

用多个对象和数组解析json数据

1 个答案: