JSON5验证解析

JavaScript：点击查看

const JSON5 = require('json5');

const json5Str = `{
  // 这是一个注释
  unquoted: 'and you can quote me on that',
  singleQuotes: 'I can use single quotes',
  lineBreaks: "Look, Mom! \
No \\n's!",
  hexadecimal: 0xdecaf,
  leadingDecimalPoint: .8675309,
  andTrailing: 8675309.,
  positiveInfinity: Infinity,
  negativeInfinity: -Infinity,
  notANumber: NaN,
}`;

const obj = JSON5.parse(json5Str);
console.log(obj);

const backToJson5 = JSON5.stringify(obj, null, 2);
console.log(backToJson5);

Python：点击查看

# pip3 install json5
import json5

json5_str = '''{
  // 这是一个注释
  unquoted: 'and you can quote me on that',
  singleQuotes: 'I can use single quotes',
  lineBreaks: "Look, Mom! \
No \\n's!",
  hexadecimal: 0xdecaf,
  leadingDecimalPoint: .8675309,
  andTrailing: 8675309.,
  positiveInfinity: Infinity,
  negativeInfinity: -Infinity,
  notANumber: NaN,
}'''

obj = json5.loads(json5_str)
print(obj)

back_to_json5 = json5.dumps(obj, indent=2)
print(back_to_json5)

Ruby：点击查看

require 'json5'

json5_str = <<-JSON5
{
  // 这是一个注释
  unquoted: 'and you can quote me on that',
  singleQuotes: 'I can use single quotes',
  lineBreaks: "Look, Mom! \
No \\n's!",
  hexadecimal: 0xdecaf,
  leadingDecimalPoint: .8675309,
  andTrailing: 8675309.,
  positiveInfinity: Infinity,
  negativeInfinity: -Infinity,
  notANumber: NaN,
}
JSON5

obj = JSON5.parse(json5_str)
puts obj

back_to_json5 = JSON5.generate(obj, indent: '  ')
puts back_to_json5

Java：点击查看

import org.json5.JSON5;
import org.json5.JSONObject;

public class JSON5Example {
  public static void main(String[] args) {
    String json5Str = "{\n" +
        "  // 这是一个注释\n" +
        "  unquoted: 'and you can quote me on that',\n" +
        "  singleQuotes: 'I can use single quotes',\n" +
        "  lineBreaks: \"Look, Mom! \\\n" +
        "No \\n's!\",\n" +
        "  hexadecimal: 0xdecaf,\n" +
        "  leadingDecimalPoint: .8675309,\n" +
        "  andTrailing: 8675309.,\n" +
        "  positiveInfinity: Infinity,\n" +
        "  negativeInfinity: -Infinity,\n" +
        "  notANumber: NaN,\n" +
        "}";

    JSONObject obj = (JSONObject) JSON5.parse(json5Str);
    System.out.println(obj);

    String backToJson5 = JSON5.stringify(obj, null, 2);
    System.out.println(backToJson5);
  }
}

Java（Jackson）：点击查看

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new Json5Module());
JsonParser parser = new JsonFactory().createJsonParser(json5Data);
JsonNode node = mapper.readTree(parser);

C#：点击查看

using System;
using JSON5;

class Program
{
  static void Main(string[] args)
  {
    string json5Str = @"{
      // 这是一个注释
      unquoted: 'and you can quote me on that',
      singleQuotes: 'I can use single quotes',
      lineBreaks: ""Look, Mom! \
No \n's!"",
      hexadecimal: 0xdecaf,
      leadingDecimalPoint: .8675309,
      andTrailing: 8675309.,
      positiveInfinity: Infinity,
      negativeInfinity: -Infinity,
      notANumber: NaN,
    }";

    Console.WriteLine("使用 JSON5:");

    // 使用 JSON5 解析
    var json5Obj = JSON5.Parse(json5Str);
    Console.WriteLine("JSON5 解析结果:");
    Console.WriteLine(json5Obj);

    // 将 JSON5 对象转换为标准 JSON 字符串
    string standardJsonStr = JSON5.Stringify(json5Obj, new JSON5.JSON5Options { Indent = "  " });
    Console.WriteLine("\nJSON5 转换为标准 JSON:");
    Console.WriteLine(standardJsonStr);

    // 展示 JSON5 的特性
    Console.WriteLine("\nJSON5 特性:");
    Console.WriteLine($"支持注释: {json5Str.Contains("// 这是一个注释")}");
    Console.WriteLine($"支持未加引号的键: {json5Str.Contains("unquoted:")}");
    Console.WriteLine($"支持单引号: {json5Str.Contains("'and you can quote me on that'")}");
    Console.WriteLine($"支持多行字符串: {json5Str.Contains("Look, Mom! \\")}");
    Console.WriteLine($"支持十六进制: {json5Str.Contains("0xdecaf")}");
    Console.WriteLine($"支持特殊数值 (Infinity, NaN): {json5Str.Contains("Infinity") && json5Str.Contains("NaN")}");
  }
}

C#（Newtonsoft）：点击查看

using System;
using JSON5;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

class Program
{
  static void Main(string[] args)
  {
    string json5Str = @"{
      // 这是一个注释
      unquoted: 'and you can quote me on that',
      singleQuotes: 'I can use single quotes',
      lineBreaks: ""Look, Mom! \
No \n's!"",
      hexadecimal: 0xdecaf,
      leadingDecimalPoint: .8675309,
      andTrailing: 8675309.,
      positiveInfinity: Infinity,
      negativeInfinity: -Infinity,
      notANumber: NaN,
    }";


    // 使用 Newtonsoft.Json 解析标准 JSON
    JObject newtonsoftObj = JsonConvert.DeserializeObject(json5Str);
    Console.WriteLine("Newtonsoft.Json 解析结果:");
    Console.WriteLine(newtonsoftObj.ToString(Formatting.Indented));

    // 使用 Newtonsoft.Json 序列化回 JSON 字符串
    string backToJsonStr = JsonConvert.SerializeObject(newtonsoftObj, Formatting.Indented);
    Console.WriteLine("\n重新序列化为 JSON:");
    Console.WriteLine(backToJsonStr);

    // 展示 Newtonsoft.Json 的一些功能
    Console.WriteLine("\nNewtonsoft.Json 功能:");
    Console.WriteLine($"可以访问特定属性: {newtonsoftObj["unquoted"]}");
    Console.WriteLine($"可以修改属性: {newtonsoftObj["unquoted"] = "modified value"}");
    Console.WriteLine($"支持 LINQ 查询: {newtonsoftObj.Properties().Count()} 个属性");
    Console.WriteLine($"支持动态类型 (dynamic): {((dynamic)newtonsoftObj).singleQuotes}");
  }
}