能否使用正则表达式从JSON数组内的对象中提取指定值？（Geoserver AuthKEY WebService用户组服务场景）

Absolutely, you can pull this off with a regular expression tailored to your specific JSON structure—perfect for your GeoServer AuthKEY WebService use case. Just keep in mind: regex isn't the ideal tool for general JSON parsing (it struggles with nested structures or escaped quotes), but for your predictable response format, it works flawlessly.

The Regex Pattern #

Use this pattern to capture each group title without its surrounding quotes:

"title":\s*"([^"]+)"

Pattern Breakdown #

• "title": : Matches the literal "title" key exactly as it appears in your JSON
• \s* : Allows any number of whitespace characters (spaces, tabs, even newlines) between the key and its value
• "([^"]+)" : Captures the actual title text—[^"]+ matches every character until the closing double quote, ensuring we grab the full title without the surrounding quotes

How to Implement It #

In GeoServer's AuthKEY WebService configuration (where you define the regex for parsing the response body):

1. Apply the regex to extract all matches of the first capture group (the content inside the ()).
2. Join those captured title values with , (comma plus space) to get your desired output: Core Team, Group A, Group B

Important Caveat #

This regex assumes your title values never contain escaped double quotes (like "title": "Core \"Team\""). If your JSON might have such edge cases, regex will fail—but for most standard GeoServer user group setups, this pattern will work reliably.

内容的提问来源于stack exchange，提问作者Bernd Loigge