将数据的格式更改为 JSON

Question

我想将我的数据更改为所需的 JSON 格式。我的数据如下所示：

[
  "{
     id:001,
     name:akhilesh,
   }",
  "{
     id:002,
     name:Ram,
   }"
]

我想把上面的数据转换成有效的JSON：

[
   {
     "id":"001",
     "name":"akhilesh"
   },
   {
     "id":"002",
     "name":"Ram"
   }
]

我尝试了以下方法，但都没有帮助：

1. JSON.serialize
2. JSON.parse
3. eval

我需要这方面的帮助。

来自服务器端的确切数据响应是：

{
    "d": [
        "{id:413,title:ranjan,start:413,end:413}",
        "{id:414,title:raja,start:414,end:414}",
        "{id:415,title:raja g,start:415,end:415}",
        "{id:416,title:abhh,start:416,end:416}",
        "{id:417,title:chta,start:417,end:417}",
        "{id:418,title:Raju,start:418,end:418}",
        "{id:419,title:Ranjan,start:419,end:419}",
        "{id:420,title:Raja,start:420,end:420}",
        "{id:421,title:chitti,start:421,end:421}",
        "{id:422,title:Raja,start:422,end:422}",
        "{id:423,title:raja,start:423,end:423}",
        "{id:424,title:yash,start:424,end:424}",
        "{id:425,title:vsg,start:425,end:425}",
        "{id:431,title:Vimal11,start:431,end:431}",
        "{id:432,title:Aruhi,start:432,end:432}",
        "{id:434,title:Aruhi,start:434,end:434}",
        "{id:435,title:,start:435,end:435}",
        "{id:436,title:xs,start:436,end:436}",
        "{id:437,title:rajkj,start:437,end:437}",
        "{id:438,title:mmt,start:438,end:438}",
        "{id:439,title:xaxa,start:439,end:439}",
        "{id:440,title:yash,start:440,end:440}"
    ]
}

服务器端代码

[System.Web.Services.WebMethod]
public static List<string> getData()
{
    List<string> data = new List<string>();

    using (SqlConnection con = new SqlConnection("Data Source=ACME-PC\\SQL;Integrated Security=true;Initial Catalog=ClinicApplication"))
    {
        SqlCommand cmd = new SqlCommand("select DISTINCT Patient_ID,First_Name,fromtime,totime,Date from tbl_AddPatientInfo", con);
        {
            con.Open();
            SqlDataReader dr = cmd.ExecuteReader();

            while (dr.Read())
            {

                string id = "{" +
                    "\"id:\"" + dr["Patient_ID"].ToString() + "," +
                    "title:" + dr["First_Name"].ToString() + "," +
                    "start:" + dr["Patient_ID"].ToString() + "," +
                    "end:" + dr["Patient_ID"].ToString() +
                    "}";
                string ids = id.Replace(@"""", "");

                data.Add(ids);
            }
            return data;
        }
    }
}

Answer 1

如果您可以控制从服务器发送响应的方式，我建议使用json_encode(response);（如果使用 PHP）或JSON.stringify(response)（如果使用 Javascript(node.js) 或其他语言的类似方法）。然后在客户端，您可以直接在响应上使用JSON.parse(response) 来获取 JSON 对象。

数组的元素需要用引号括起来，以便可以使用JSON.parse 将其转换为JSON。然后map 可以与 JSON.parse 一起使用。

var arr = [
    '{"id":"001","name":"akhilesh"}',
    '{"id":"002","name":"Ram"}'
];

arr = arr.map(JSON.parse);

console.log(arr);
document.getElementById('result').innerHTML = JSON.stringify(arr, 0, 4);

<pre id="result"></pre>

---

如果字符串中没有引号，可以使用正则表达式添加它们并使其适合传递给JSON.parse。

Demo

var arr = [
    "{id:001,name:akhilesh}",
    "{id:002,name:Ram}"
];

arr = arr.map(function(e) {
    // Add quotes on every alphanumeric character
    return JSON.parse(e.replace(/(\w+)/g, '"$1"'));
});

console.log(arr);
document.getElementById('result').innerHTML = JSON.stringify(arr, 0, 4);

<pre id="result"></pre>

Answer 2

通过使用javascript 而不是执行复杂的regex（在某些情况下可能不起作用）。最好进行服务器端更改以正确获取JSON 数据。

避免通过字符串连接构建 JSON，因为当字符串包含 JSON 中的某些特殊字符时，您可能会发送损坏的数据。这应该使用 JSON 序列化程序来完成。

[System.Web.Services.WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public static string getData(){
   List<Dictionary<string, string>> data = new List<Dictionary<string, string>>();
   Dictionary<string, string> item;
   using (SqlConnection con = new SqlConnection("Data Source=ACME-PC\\SQL;Integrated Security=true;Initial Catalog=ClinicApplication"))
   {
       SqlCommand cmd = new SqlCommand("select DISTINCT Patient_ID,First_Name,fromtime,totime,Date from tbl_AddPatientInfo", con);
       {
           con.Open();
           SqlDataReader dr = cmd.ExecuteReader();

           while (dr.Read())
           {
                item = new Dictionary<string, string>();
                item.Add("id", dr["Patient_ID"]+"");
                item.Add("title", dr["First_Name"]+"");
                item.Add("start", dr["Patient_ID"]+"");
                item.Add("end", dr["Patient_ID"]+"");
                data.Add(item);
           }
           return new JavaScriptSerializer().Serialize(data);
       }
    }
}

修改现有代码：

[System.Web.Services.WebMethod]
public static List<string> getData(){
    List<string> data = new List<string>();
    using (SqlConnection con = new SqlConnection("Data Source=ACME-PC\\SQL;Integrated Security=true;Initial Catalog=ClinicApplication"))
    {
       SqlCommand cmd = new SqlCommand("select DISTINCT Patient_ID,First_Name,fromtime,totime,Date from tbl_AddPatientInfo", con);
       {
           con.Open();
           SqlDataReader dr = cmd.ExecuteReader();

           while (dr.Read())
           {
                string id = "{" +
                   "\"id\":"  + "\""+dr["Patient_ID"].ToString()+"\"" + "," +
                   "\"title\":" + "\""+dr["First_Name"].ToString()"\"" + "," +
                   "\"start\":" + "\""+dr["Patient_ID"].ToString()"\"" + "," +
                   "\"end\":" + "\""+dr["Patient_ID"].ToString() + "\""+
                   "}";
                data.Add(id);
           }
           return data;
       }
    }
}

Answer 3

通过 JavaScript 修复 JSON 是错误的。在服务器端使用字符串函数生成 JSON 同样是垃圾。例如，当数据包含 "、新行等等时，您的代码将中断。

我宁愿使用一些生成 JSON 的库。这是一个使用JavaScriptSerializer 的完整示例。它可以转换各种对象。这里我们使用List 的Dictionary 对象：

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Services;
using System.Web.Script.Services;
using System.Web.Script.Serialization;

[WebService]
[ScriptService]

public class WebService1 : System.Web.Services.WebService
{
    [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public string getData()
    {
        List<Dictionary<string, object>> data = new List<Dictionary<string, object>>();
        using (SqlConnection con = new SqlConnection("Data Source=ACME-PC\\SQL;Integrated Security=true;Initial Catalog=ClinicApplication"))
        {
            SqlCommand cmd = new SqlCommand("select DISTINCT Patient_ID,First_Name,fromtime,totime,Date from tbl_AddPatientInfo", con);
            {
                con.Open();
                SqlDataReader dr = cmd.ExecuteReader();
                while (dr.Read())
                {
                    Dictionary<string, object> item = new Dictionary<string, object>();
                    item.Add("id", dr["Patient_ID"]);
                    item.Add("title", dr["First_Name"]);
                    item.Add("start", dr["Patient_ID"]);
                    item.Add("end", dr["Patient_ID"]);
                    data.Add(item);
                }
            }
        }
        return new JavaScriptSerializer().Serialize(data);
    }
}

使用 jQuery 进行测试：

jQuery.ajax({
    url: "/testing/WebService1.asmx/getData",
    method: "POST",
    contentType: "application/json",
    dataType: "json",
    success: function (json) {
        var data = jQuery.parseJSON(json.d);
        console.log(data);
    }
});

控制台日志：

[{
    "id": 413,
    "title": "ranjan",
    "start": 413,
    "end": 413
}, {
    "id": 414,
    "title": "raja",
    "start": 414,
    "end": 414
}]