JSONPath: Query JSON data like using SQL
Challenges
When dealing with deep-seated JSON responses, traditional code writing requires multiple layers.
if
Judge and circulate. This makes the code not only cumbersome, but also very easy to throw "empty pointers" out because of the absence of a certain middle level.
Our solution.
JSONPath A declarative syntax is provided to allow you to describe the desired data path in a simple string expression in a row. Whether cross-level search or condition filter, JSONPath It will help you to get the data out in the most efficient way possible.
JSONPath core grammar guide
JSONPath on JSON, just like XPath on XML. The following are your most common operators:
-
$: Root. All expressions should start with this. -
@: Current Node. Usually used to filter expressions. -
.or[]: Subpoint access. -
..: Deep scan (renewal search). Target fields can be found across any level. -
*: wildcard. Matches all elements or properties. -
[?(expression)]: Filter expression. Supports logical operators (e. g.)<,>,==,&&）。
Why use JSONPath Plus?
This tool uses the most functional JSONPath Plus Engine, which provides more advanced functions than the original norm:
- Stronger Filter : Support complex JavaScript logical judgements.
-
Slice Operations
: Similar to Python
[start:end:step], easily extracts a subset of the array. -
Properties Selection
: Support
~Operator takes a key name instead of a key value. - More robust and wrong. : Reverts empty arrays instead of dropping anomalies when the path does not exist, making your logic safer.
Field application cases
-
Log Analysis
: quick extract all the contents from the mass structured log
level: "error"The wrong stack. - Automation testing : In interface testing scripts, use expression to assert whether particular fields in the body return are in line with expectations.
- Configure Management : Extract all container mirror names from complex K8s definitions or from the cloud service configuration.
- Front-State Management : In large Redux or Vux Store, precisely subscribe to deep-seated state changes.
Privacy and security
This test tool is fully run on the local browser. Your JSON. Data and query expressions are never sent to clouds. We are committed to providing you with a private, efficient and pure development support environment.