JSON 语法校验完整指南 - 8 大常见错误与解决方案（2026）

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{
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  "name": "John",
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  "age": 30
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  "city": "New York"  ❌ 缺少逗号
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}

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SyntaxError: Unexpected token "age"

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{
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  "name": "John",
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  "age": 30,  ✅ 添加逗号
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  "city": "New York"
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}

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{
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  "users": [
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    {"name": "John"},
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    {"name": "Jane"},  ❌ 最后一个元素后有多余逗号
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  ]
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}

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{
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  "users": [
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    {"name": "John"},
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    {"name": "Jane"}  ✅ 移除逗号
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  ]
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}

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{
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  "name": "John,  ❌ 缺少结束引号
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  "age": 30
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}

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{
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  'name': 'John'  ❌ 使用了单引号
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}

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{
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  "quote": "He said "Hello""  ❌ 引号冲突
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}

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{
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  "name": "John",  ✅ 补全引号
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  "quote": "He said \"Hello\""  ✅ 转义内部引号
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}

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{
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  "data": {
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    "users": [
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      {"name": "John"},
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      {"name": "Jane"  ❌ 缺少对象闭合括号
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    ]
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  }
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}

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{
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  "data": {
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    "users": [
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      {"name": "John"},
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      {"name": "Jane"}  ✅ 添加闭合括号
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    ]
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  }
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}

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{
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  name: "John",    ❌ 键名必须用双引号
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  'age': 30,       ❌ 使用单引号
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  `city`: "NYC"    ❌ 使用反引号
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}

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{
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  "name": "John",  ✅ 双引号
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  "age": 30,
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  "city": "NYC"
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}

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{
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  "path": "C:\Users\John"  ❌ 反斜杠未转义
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}

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{
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  "text": "Line 1
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Line 2"  ❌ 直接换行
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}

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{
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  "text": "Tab  here"  ❌ 直接制表符
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}

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{
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  "path": "C:\\Users\\John",  ✅ 双反斜杠
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  "text": "Line 1\nLine 2"    ✅ 使用转义符
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}

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{
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  "age": "thirty",  ❌ 应该是数字
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  "active": "true", ❌ 应该是布尔值
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  "score": "null",  ❌ 应该是 null 类型
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  "tags": "json"    ❌ 应该是数组
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}

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{
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  "age": 30,        ✅ 数字类型
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  "active": true,   ✅ 布尔类型
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  "score": null,    ✅ null 类型
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  "tags": ["json"]  ✅ 数组类型
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}

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{
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  "name": "John",
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  // 这是注释  ❌ JSON 不支持注释
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  "age": 30
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}

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{
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  "name": "John",
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  "age": 30
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}

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{
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  "name": "John",
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  "_comment": "这是用户信息",
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  "age": 30
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}

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{
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  "name": "John",
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  // JSON5 支持注释
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  "age": 30
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}

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功能：实时校验、错误定位、修复建议
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网址：https://www.xingdian.net/app/json/validate/
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特色：完全免费，支持大文件

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import json
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with open('large.json', 'r', encoding='utf-8') as f:
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    lines = f.readlines()
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# 逐行读取并测试
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for i in range(1, len(lines) + 1):
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    try:
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        content = ''.join(lines[:i])
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        json.loads(content)
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    except json.JSONDecodeError as e:
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        print(f"错误在第 {i} 行：{e}")
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        break

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// ❌ 避免手动编写
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const json = `{"name": "John", "age": 30}`;
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// ✅ 使用 JSON.stringify
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const data = { name: "John", age: 30 };
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const json = JSON.stringify(data, null, 2);

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{
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  "$schema": "http://json-schema.org/draft-07/schema#",
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  "type": "object",
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  "required": ["name", "age"],
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  "properties": {
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    "name": {
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      "type": "string"
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    },
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    "age": {
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      "type": "integer",
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      "minimum": 0
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    }
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  }
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}

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name: JSON Validator
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on: [push]
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jobs:
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  validate:
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    runs-on: ubuntu-latest
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    steps:
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      - uses: actions/checkout@v2
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      - name: Validate JSON
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        run: |
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          for file in $(find . -name "*.json"); do
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              jq '.' $file > /dev/null || exit 1
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          done

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[*.json]
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indent_style = space
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indent_size = 2
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end_of_line = lf
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charset = utf-8
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trim_trailing_whitespace = true
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insert_final_newline = true