is this valid JSON? error: Content not allowed in prolog

Question

如何测试以下 JSON 文件的正确性？

在命令行中使用basex：

thufir@dur:~/json$ 
thufir@dur:~/json$ ls
formatted.json  raw.json
thufir@dur:~/json$ 
thufir@dur:~/json$ basex
BaseX 9.0.1 [Standalone]
Try 'help' to get more information.
> 
> CREATE DATABASE db raw.json
"/home/thufir/json/raw.json" (Line 1): Content is not allowed in prolog.
> 
> CREATE DATABASE db formatted.json
"/home/thufir/json/formatted.json" (Line 1): Content is not allowed in prolog.
> 
> exit
Have fun.
thufir@dur:~/json$

我运行原始数据经过一个formatter使其更具可读性：

thufir@dur:~/json$ 
thufir@dur:~/json$ cat formatted.json 
{
  "1224083010015956992": {
    "metadata": {
      "result_type": "recent",
      "iso_language_code": "en"
    },
    "in_reply_to_status_id_str": null,
    "in_reply_to_status_id": null,
    "created_at": "Sun Feb 02 21:31:46 +0000 2020",
    "in_reply_to_user_id_str": null,
    "source": "<a href=\"https://mobile.twitter.com\" rel=\"nofollow\">Twitter Web App<\/a>",
    "retweeted_status": {
      "metadata": {
        "result_type": "recent",
        "iso_language_code": "en"
      },
      "in_reply_to_status_id_str": null,
      "in_reply_to_status_id": null,
      "created_at": "Sun Feb 02 20:53:32 +0000 2020",
      "in_reply_to_user_id_str": null,
      "source": "<a href=\"https://about.twitter.com/products/tweetdeck\" rel=\"nofollow\">TweetDeck<\/a>",
      "retweet_count": 3,
      "retweeted": false,
      "geo": null,
      "in_reply_to_screen_name": null,
      "is_quote_status": false,
      "id_str": "1224073388706189312",
      "in_reply_to_user_id": null,
      "favorite_count": 6,
      "id": 1224073388706189312,
      "text": "Myth of the 10x programmer:\n\nh......... particularly like the list of productivity improvement \"tools\" at the end.",
      "place": null,
      "lang": "en",
      "favorited": false,
      "possibly_sensitive": false,

鉴于在线解析器显示数据并可以探索节点，看不出问题所在。

已满：

https://gist.github.com/THUFIR/ab9e1f77af92d4d984b268434afc01dd.js

Answer 1

CREATE DATABASE 的引用文档：

Syntax CREATE DB [name] ([input])

The input can be a file or directory path to XML documents, a remote URL, or a string containing XML

如您所见，该命令需要一个 XML 文件，而不是 JSON 文件。

Answer 2

似乎有效：

thufir@dur:~/json$ 
thufir@dur:~/json$ 
thufir@dur:~/json$ basex
BaseX 9.0.1 [Standalone]
Try 'help' to get more information.
> 
> list
Name                 Resources  Size  Input Path                               
-----------------------------------------------------------------------------
com.w3schools.books  1          6290  https://www.w3schools.com/xml/books.xml  
w3school_data        1          5209  https://www.w3schools.com/xml/note.xml   

2 database(s).
> 
> exit
See you.
thufir@dur:~/json$ 
thufir@dur:~/json$ ls
createDB.xquery  formatted.json  raw.json
thufir@dur:~/json$ 
thufir@dur:~/json$ cat createDB.xquery 
let $database := "db"
for $name in file:list('.', false(), '*.json')
let $file := file:read-text($name)
let $json := json:parse($file)
return db:add($database, $json, $name) 
thufir@dur:~/json$ 
thufir@dur:~/json$ basex createDB.xquery 
Stopped at /home/thufir/json/createDB.xquery, 5/14:
[db:open] Database 'db' was not found.
thufir@dur:~/json$ 
thufir@dur:~/json$ basex
BaseX 9.0.1 [Standalone]
Try 'help' to get more information.
> 
> create database db
Database 'db' created in 269.32 ms.
> 
> list
Name                 Resources  Size  Input Path                               
-----------------------------------------------------------------------------
com.w3schools.books  1          6290  https://www.w3schools.com/xml/books.xml  
db                   0          4570                                           
w3school_data        1          5209  https://www.w3schools.com/xml/note.xml   

3 database(s).
> 
> exit
See you.
thufir@dur:~/json$ 
thufir@dur:~/json$ basex createDB.xquery 
thufir@dur:~/json$ 
thufir@dur:~/json$ basex
BaseX 9.0.1 [Standalone]
Try 'help' to get more information.
> 
> list
Name                 Resources  Size    Input Path                               
-------------------------------------------------------------------------------
com.w3schools.books  1          6290    https://www.w3schools.com/xml/books.xml  
db                   2          196469                                           
w3school_data        1          5209    https://www.w3schools.com/xml/note.xml   

3 database(s).
> 
>

并且该查询将 return 一个非常大的文档，太大而无法粘贴到这里。

只是想用 Java 完成上述操作。关于 JSON 与 XML 的观点是正确的。（xquery 文件是 from 文档。）

只要格式化的 JSON 在目录中，似乎效果更好：

thufir@dur:~/json$ 
thufir@dur:~/json$ basex
BaseX 9.0.1 [Standalone]
Try 'help' to get more information.
> 
> list
Name                 Resources  Size    Input Path                               
-------------------------------------------------------------------------------
com.w3schools.books  1          6290    https://www.w3schools.com/xml/books.xml  
db                   1          101838                                           
w3school_data        1          5209    https://www.w3schools.com/xml/note.xml   

3 database(s).
> 
> open db
Database 'db' was opened in 66.85 ms.
> 
> xquery /

然后是 return 预期结果（完整的 JSON）。

is this valid JSON? error: Content not allowed in prolog

is this valid JSON? error: Content not allowed in prolog

parsing

json

basex