JsonPath syntax vs. XPath

Xpath	JSONPath	Description
/	$	The root object/element
.	@	The current object/element
/	. or []	Child operator
..	N/A	Parent operator
//	..	Recursive descent. JSONPath borrows this syntax from E4X.
*	*	Wildcard. All objects/elements regardless their names.
@	N/A	Attribute access. JSON structures don ' t has attributes.
[]	[]	Subscript operator. XPath uses it to iterate over element collections and for predicates. In Javascript and JSON it is the native array operator.
|	[,]	Union operator in XPath results in a combination of node sets. JSONPath allows alternate names or array indices as a set.
N/A	[Start:end:step]	Array slice operator borrowed from ES4.
[]	? ()	Applies a filter (script) expression.
N/A	()	Script expression, using the underlying script engine.
()	N/A	Grouping in Xpath

JSONPath expressions can use the dot–notation

$.store.book[0].title

or the bracket–notation

$[‘store‘][‘book‘][0][‘title‘]

The following XPath expression

/store/book[1]/title

JsonPath would look like

x.store.book[0].title

Or

x[‘store‘][‘book‘][0][‘title‘]

JSONPath Examples

123456789Ten One A - - the - - - + - + A at - - - - - in - to

{ "store": {    "book": [       { "category": "reference",        "author": "Nigel Rees",        "title": "Sayings of the Century",        "price": 8.95      },      { "category": "fiction",        "author": "Evelyn Waugh",        "title": "Sword of Honour",        "price": 12.99      },      { "category": "fiction",        "author": "Herman Melville",        "title": "Moby Dick",        "isbn": "0-553-21311-3",        "price": 8.99      },      { "category": "fiction",        "author": "J. R. R. Tolkien",        "title": "The Lord of the Rings",        "isbn": "0-395-19395-8",        "price": 22.99      }    ],    "bicycle": {      "color": "red",      "price": 19.95    }  }}

　　

Xpath	JSONPath	Result
/store/book/author	$.store.book[*].author	The authors of all books in the store
//author	$..author	All authors
/store/*	$.store.*	All things in store, which is some books and a red bicycle.
/store//price	$.store..price	The price of everything in the store.
//book[3]	$..book[2]	The third book
//book[last()]	$..book[(@.length-1)] $..book[-1:]	The last book is in order.
//book[position()<3]	$..book[0,1] $..book[:2]	The first and the books
//book[isbn]	$..book[?(@.isbn)]	Filter All books with ISBN number
//book[price<10]	$..book[?(@.price<10)]	Filter all books Cheapier than 10
//*	$..*	All Elements in XML document. All members of the JSON structure.

Required JAR Package

Json-path-0.9.1.jar

Json-smart-1.2.jar

Commons-lang-2.6.jar

JsonPath syntax vs. XPath