使用Json.NET反序列化复杂对象 [英] Deserializing complex object using Json.NET
本文介绍了使用Json.NET反序列化复杂对象的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要反序列化从grogle maps api返回的json:
I need to deserialize the this json returned from grogle maps api:
{
"destination_addresses": [
"Via Medaglie D'Oro, 10, 47121 Forlì FC, Italia",
"Via Torino, 20123 Milano, Italia",
"Via Guglielmo Marconi, 71, 40121 Bologna, Italia",
"Via Irnerio, 40126 Bologna, Italia"
],
"origin_addresses": [
"Via Medaglie D'Oro, 10, 47121 Forlì FC, Italia",
"Via Torino, 20123 Milano, Italia",
"Via Guglielmo Marconi, 71, 40121 Bologna, Italia",
"Via Irnerio, 40126 Bologna, Italia"
],
"rows": [
{
"elements": [
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "286 km",
"value": 286281
},
"duration": {
"text": "2 ore 48 min",
"value": 10083
},
"status": "OK"
},
{
"distance": {
"text": "80,1 km",
"value": 80088
},
"duration": {
"text": "1 ora 3 min",
"value": 3789
},
"status": "OK"
},
{
"distance": {
"text": "77,6 km",
"value": 77594
},
"duration": {
"text": "57 min",
"value": 3422
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "288 km",
"value": 287811
},
"duration": {
"text": "2 ore 48 min",
"value": 10052
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "212 km",
"value": 212423
},
"duration": {
"text": "2 ore 8 min",
"value": 7664
},
"status": "OK"
},
{
"distance": {
"text": "218 km",
"value": 218219
},
"duration": {
"text": "2 ore 9 min",
"value": 7740
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "78,5 km",
"value": 78528
},
"duration": {
"text": "56 min",
"value": 3346
},
"status": "OK"
},
{
"distance": {
"text": "212 km",
"value": 212190
},
"duration": {
"text": "2 ore 5 min",
"value": 7519
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
},
{
"distance": {
"text": "2,0 km",
"value": 1979
},
"duration": {
"text": "5 min",
"value": 316
},
"status": "OK"
}
]
},
{
"elements": [
{
"distance": {
"text": "74,7 km",
"value": 74719
},
"duration": {
"text": "55 min",
"value": 3278
},
"status": "OK"
},
{
"distance": {
"text": "218 km",
"value": 217951
},
"duration": {
"text": "2 ore 9 min",
"value": 7712
},
"status": "OK"
},
{
"distance": {
"text": "3,8 km",
"value": 3782
},
"duration": {
"text": "11 min",
"value": 671
},
"status": "OK"
},
{
"distance": {
"text": "1 m",
"value": 0
},
"duration": {
"text": "1 min",
"value": 0
},
"status": "OK"
}
]
}
],
"status": "OK"
}
我需要创建一个距离矩阵，所以我只对距离"内的值"字段感兴趣.
I need to create a Distance Matrix so I'm only interested in the "value" field inside "distance".
我已经尝试过这种方法:
I've tried this approach:
DataSet data = JsonConvert.DeserializeObject<DataSet>(jsonResponse);
DataTable dataTab = data.Tables["Elements"];
foreach (DataRow elements in dataTab.Rows)
{
Console.WriteLine(elements["distance"]);
//Do something else here
}
但是JSonConvert返回对象完成反序列化后在JSON字符串中找到的其他文本."
But The JSonConvert returns "Additional text found in JSON string after finishing deserializing object."
推荐答案
您应反序列化为与您的数据匹配的类.您可以在 http://json2csharp.com/中生成这些类.
You should deserialize to classes that match your data. You can generate these classes at http://json2csharp.com/.
// use like
var rootObj = JsonConvert.DeserializeObject<RootObject>(jsonResponse);
foreach (var row in rootObj.rows)
{
foreach (var element in row.elements)
{
Console.WriteLine(element.distance.text);
}
}
// you might want to change the property names to .Net conventions
// use [JsonProperty] to let the serializer know the JSON names where needed
public class Distance
{
public string text { get; set; }
public int value { get; set; }
}
public class Duration
{
public string text { get; set; }
public int value { get; set; }
}
public class Element
{
public Distance distance { get; set; }
public Duration duration { get; set; }
public string status { get; set; }
}
public class Row
{
public List<Element> elements { get; set; }
}
public class RootObject
{
public List<string> destination_addresses { get; set; }
public List<string> origin_addresses { get; set; }
public List<Row> rows { get; set; }
public string status { get; set; }
}
这篇关于使用Json.NET反序列化复杂对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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