正则表达式匹配不包含空格

Question

我有这个正则表达式：

(?'box_id'\d{1,19})","box_name":"(?'box_name'[\w\d\.\s]{1,19})

除非框名称包含空格，否则效果很好。例如，当在 my box 上执行它时，它会返回 mybox，不带空格。

如何使其在 box_name 组中包含空格？

代码：

Regex reg = new Regex(@"""object_id"":""(?<object_id>\d{1,19})"",""file_name"":""(?<file_name>[\w.]+(?:\s[\w.]+)*)""");
MatchCollection matches = reg.Matches(result);
if ( matches == null) throw new Exception("There was an error while parsing data."); 
if ( matches.Count > 0 )
{
  FileArchive.FilesDataTable filesdataTable = new FileArchive.FilesDataTable();
  foreach ( Match match in matches )
  {
    FileArchive.FilesRow row = filesdataTable.NewFilesRow();
    row.ID = match.Groups["object_id"].Value;
    row.Name = match.Groups["file_name"].Value;
  }
}

输入：

{"objects":[{"object_id":"135248","file_name":"这里有空间.jpg","video_status":"0","thumbnail_status":"1"},{"object_id ":"135257","file_name":"jup 13.jpg","video_status":"0","thumbnail_status":"1"},{"object_id":"135260","file_name":"我的pic.jpg","video_status":"0","thumbnail_status":"1"},{"object_id":"135262","file_name":"EveningWav)es,H on(olulu,夏威夷.jpg","video_status":"0","thumbnail_status":"1"},{"object_id":"135280","file_name":"test with space.jpg","video_status":"0","thumbnail_status":"1"}],"status":"ok"}

Answer 1

在我看来，您的数据始终是用双引号分隔的，不是吗？这一事实应该是正则表达式的基础：

(?<box_id>\d{1,19})","file_name":"(?<box_name>[^"]{1,19})  //1 to 19 non " chars.

就缺少空格而言，此标记 (?'box_name'[\w\d.\s]{1,19}) 无法匹配包含 ' 的字符串上的 'mybox'我的盒子'，所以这个问题一定是下游的。

拼写错误和风格：您有文字“box_name”，但标记是“file_name”。另外，当 <> 时，为什么要切换到使用单引号作为命名组分隔符？默认情况下的括号更具可读性（因为引号位于正则表达式中！）

Answer 2

除了 @sweaver2112 所说的之外，我认为您需要通过添加引号来扩展框架并摆脱 {1,19} 范围。

这些正则表达式在 Perl 中工作，我不想启动 C# 来测试它。

"(?\d+)","(?:${type})":"(?[\w.]+(?:\s[\w.]+ )*)"
或者，
"\s*(?\d+)\s*","\s*(?:${type})\s*":"\s*(?[\ w.]+(?:\s[\w.]+)*)\s*"
其中 $type = '文件名';

但实际上，这也应该有效（类型被替换）。它的验证是宽松的。
"(?\d+)","file_name":"(?[^"]*)"

编辑

“不确定，什么我的正则表达式返回给你了吗？ – sln 昨天
它返回了正确的结果，在我的问题的输入中，我得到了 'somespacehere.jpg' 'jup13.jpg' 等 file_name 组。 – NET 开发人员昨天“

我获取了您的代码和输入，然后打印了组，它工作完美。空格就在那里，
将其分配给 ROW 数据时一定存在问题。

在这里查看 http://www.ideone.com/HsTMF

using System;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string input = @"{""objects"":[{""object_id"":""135248"",""file_name"":""some space here.jpg"",""video_status"":""0"",""thumbnail_status"":""1""},{""object_id"":""135257"",""file_name"":""jup 13.jpg"",""video_status"":""0"",""thumbnail_status"":""1""},{""object_id"":""135260"",""file_name"":""my pic.jpg"",""video_status"":""0"",""thumbnail_status"":""1""},{""object_id"":""135262"",""file_name"":""EveningWav)es,Hon(olulu,Hawaii.jpg"",""video_status"":""0"",""thumbnail_status"":""1""},{""object_id"":""135280"",""file_name"":""test with spaces.jpg"",""video_status"":""0"",""thumbnail_status"":""1""}],""status"":""ok""}";
      Regex reg = new Regex(
                   @"""object_id"":""(?<object_id>\d{1,19})"",""file_name"":""(?<file_name>[\w.]+(?:\s[\w.]+)*)"""
      );
      foreach ( Match match in reg.Matches(input) )
         Console.WriteLine(
                 "Id = '{0}',  File name = '{1}'", 
                 match.Groups["object_id"].Value,
                 match.Groups["file_name"].Value  );
   }
}

输出：

Id = '135248',  File name = 'some space here.jpg'
Id = '135257',  File name = 'jup 13.jpg'
Id = '135260',  File name = 'my pic.jpg'
Id = '135280',  File name = 'test with spaces.jpg'