[SoapUI] JsonPath 语法与 XPath 对比

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 have 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

x['store']['book'][0]['title']

JSONPath examples

{ "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/*`	`$.store.*`	all things in store, which are some books and a red bicycle.
`/store//price`	`$.store..price`	the price of everything in the store.
`//book[3]`	`$..book[2]`	the third book
`//book[last()]`	`$..book[(@.length-1)]` `$..book[-1:]`	the last book in order.
`//book[position()<3]`	`$..book[0,1]` `$..book[:2]`	the first two books
`//book[isbn]`	`$..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 JSON structure.

需要的JAR包

json-path-0.9.1.jar

json-smart-1.2.jar

commons-lang-2.6.jar

一个更加全面的JsonPath讲解

https://github.com/json-path/JsonPath

JsonPath (click link to try)	Result
$.store.book[*].author	The authors of all books
$..author	All authors
$.store.*	All things, both books and bicycles
$.store..price	The price of everything
$..book[2]	The third book
$..book[-2]	The second to last book
$..book[0,1]	The first two books
$..book[:2]	All books from index 0 (inclusive) until index 2 (exclusive)
$..book[1:2]	All books from index 1 (inclusive) until index 2 (exclusive)
$..book[-2:]	Last two books
$..book[2:]	Book number two from tail
$..book[?(@.isbn)]	All books with an ISBN number
$.store.book[?(@.price < 10)]	All books in store cheaper than 10
$..book[?(@.price <= $['expensive'])]	All books in store that are not "expensive"
$..book[?(@.author =~ /.*REES/i)]	All books matching regex (ignore case)
$..*	Give me every thing
$..book.length()	The number of books