C#格式化json字符串的方法分析

本文实例讲述了C#格式化json字符串的方法。分享给大家供大家参考，具体如下：

将Json字符串转化成格式化表示的方法: 字符串反序列化为对象-->对象再序列化为字符串

使用Newtonsoft.Json提供的API，下载地址：http://www.newtonsoft.com/json

很多时候我们需要将json字符串以

{
 "status": 1,
 "sum": 9
}

这种方式显示，而从服务端取回来的时候往往是这样

{"status": 1, "sum": 9}

什么？无所谓？

如果数据很庞大的时候，比如这样

{"status":1,"totalcount":2,"list":[{"id":"2305b1e2-4e31-4fd3-8eb6-db57641914df","code":"8147056167227050270","title":"testing","type":"产品","status":"已处理","datetime":"2014-07-12T21:16:46","replycontent":"好的，只是测试"},{"id":"3a6546f6-49a7-4a17-b679-b3812b12b27e","code":"8147056167227050269","title":"我建议龙头有多种选配方式","type":"产品","status":"未处理","datetime":"2014-07-12T18:49:08.933","replycontent":""},{"id":"f735e461-ca72-4b44-8d7b-cd97ac09802f","code":"8147056167227050268","title":"这个产品不怎么好，不好用","type":"产品","status":"未处理","datetime":"2014-07-12T15:06:19.1","replycontent":""},{"id":"15926d9d-f469-4921-b01d-4b48ef8bd93d","code":"7141054273018032465","title":"jdjbcn","type":"服务","status":"未处理","datetime":"2014-05-27T01:03:46.477","replycontent":""},{"id":"1debf78f-42b3-4037-b71f-34075eed92bc","code":"4141051277003536211","title":"jdjbxn.x","type":"服务","status":"未处理","datetime":"2014-05-27T00:53:21.18","replycontent":""},{"id":"27593c52-b327-4557-8106-b9156df53909","code":"1143051276001357050","title":"ghggghh","type":"服务","status":"未处理","datetime":"2014-05-27T00:35:05.933","replycontent":""},{"id":"040198fc-b466-46c1-89d8-0514fbde9480","code":"4142053251166372433","title":"你好，你知道啦，我不喜欢白色浴缸","type":"服务","status":"未处理","datetime":"2014-05-25T16:37:43.853","replycontent":""},{"id":"16185418-d461-4e98-83c3-824eb7e344d6","code":"4145058213013197148","title":"hdjbchh","type":"服务","status":"未处理","datetime":"2014-05-21T01:19:14.903","replycontent":""},{"id":"6c043404-c1db-42e8-adeb-d4880fa7d1b5","code":"0142051185128085372","title":"ghhjdhd","type":"服务","status":"未处理","datetime":"2014-05-18T12:08:37.997","replycontent":""},{"id":"2dca1a38-a32b-4955-a99c-2ed7d6de60fa","code":"3146050186122030382","title":"hsibcn","type":"服务","status":"未处理","datetime":"2014-05-18T12:03:38.913","replycontent":""}]}

如果没有格式化，将很难查看。。。

使用下面的方法，将结果格式化为这样

{
 "status": 1,
 "totalcount": 2,
 "list": [
   {
     "id": "2305b1e2-4e31-4fd3-8eb6-db57641914df",
     "code": "8147056167227050270",
     "title": "testing",
     "type": "产品",
     "status": "已处理",
     "datetime": "2014-07-12T21:16:46",
     "replycontent": "好的，只是测试"
   },
   {
     "id": "3a6546f6-49a7-4a17-b679-b3812b12b27e",
     "code": "8147056167227050269",
     "title": "我建议龙头有多种选配方式",
     "type": "产品",
     "status": "未处理",
     "datetime": "2014-07-12T18:49:08.933",
     "replycontent": ""
   },
   {
     "id": "f735e461-ca72-4b44-8d7b-cd97ac09802f",
     "code": "8147056167227050268",
     "title": "这个产品不怎么好，不好用",
     "type": "产品",
     "status": "未处理",
     "datetime": "2014-07-12T15:06:19.1",
     "replycontent": ""
   },
   {
     "id": "15926d9d-f469-4921-b01d-4b48ef8bd93d",
     "code": "7141054273018032465",
     "title": "jdjbcn",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-27T01:03:46.477",
     "replycontent": ""
   },
   {
     "id": "1debf78f-42b3-4037-b71f-34075eed92bc",
     "code": "4141051277003536211",
     "title": "jdjbxn.x",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-27T00:53:21.18",
     "replycontent": ""
   },
   {
     "id": "27593c52-b327-4557-8106-b9156df53909",
     "code": "1143051276001357050",
     "title": "ghggghh",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-27T00:35:05.933",
     "replycontent": ""
   },
   {
     "id": "040198fc-b466-46c1-89d8-0514fbde9480",
     "code": "4142053251166372433",
     "title": "你好，你知道啦，我不喜欢白色浴缸",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-25T16:37:43.853",
     "replycontent": ""
   },
   {
     "id": "16185418-d461-4e98-83c3-824eb7e344d6",
     "code": "4145058213013197148",
     "title": "hdjbchh",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-21T01:19:14.903",
     "replycontent": ""
   },
   {
     "id": "6c043404-c1db-42e8-adeb-d4880fa7d1b5",
     "code": "0142051185128085372",
     "title": "ghhjdhd",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-18T12:08:37.997",
     "replycontent": ""
   },
   {
     "id": "2dca1a38-a32b-4955-a99c-2ed7d6de60fa",
     "code": "3146050186122030382",
     "title": "hsibcn",
     "type": "服务",
     "status": "未处理",
     "datetime": "2014-05-18T12:03:38.913",
     "replycontent": ""
   }
 ]
}

实现代码如下：

private string ConvertJsonString(string str)
{
 //格式化json字符串
 JsonSerializer serializer = new JsonSerializer();
 TextReader tr = new StringReader(str);
 JsonTextReader jtr = new JsonTextReader(tr);
 object obj = serializer.Deserialize(jtr);
 if (obj != null)
 {
   StringWriter textWriter = new StringWriter();
   JsonTextWriter jsonWriter = new JsonTextWriter(textWriter)
   {
     Formatting = Formatting.Indented,
     Indentation = 4,
     IndentChar = ' '
   };
   serializer.Serialize(jsonWriter, obj);
   return textWriter.ToString();
 }
 else
 {
   return str;
 }
}

PS：关于json操作，这里再为大家推荐几款比较实用的json在线工具供大家参考使用：

在线JSON代码检验、检验、美化、格式化工具：
http://tools.jb51.net/code/json

JSON在线格式化工具：
http://tools.jb51.net/code/jsonformat

在线XML/JSON互相转换工具：
http://tools.jb51.net/code/xmljson

json代码在线格式化/美化/压缩/编辑/转换工具：
http://tools.jb51.net/code/jsoncodeformat

在线json压缩/转义工具：
http://tools.jb51.net/code/json_yasuo_trans

希望本文所述对大家C#程序设计有所帮助。