JMeter--assertion of JSON response &json path espressions syntax

First, extract the content of the required assertion:

The response data is as follows: Join needs to extract the value of ID 90

{    "ID": -,    "name":"python",    "URL":"Http://www.v2ex.com/go/python",    "title":"Python",    "title_alternative":"Python",    "Topics":7428,    "stars":4776,            "Header":"This topic discusses a variety of Python language programming topics, including Django,tornado and other frameworks. Here is a place to help you solve practical problems. ",                "Footer":NULL,        "created":1278683336,    "Avatar_mini":"//v2ex.assets.uxengine.net/navatar/8613/985e/90_mini.png?m=1501663676",    "Avatar_normal":"//v2ex.assets.uxengine.net/navatar/8613/985e/90_normal.png?m=1501663676",    "Avatar_large":"//v2ex.assets.uxengine.net/navatar/8613/985e/90_large.png?m=1501663676"}

1. Sample Add-post processor- add JSON extracror(this needs to learn a little bit about the syntax of JSON path espressions)--Get the value of ID 90

Read this web site to learn it: http://goessner.net/articles/JsonPath/

2. You can also use regular expressions to extract

"id":(. +?),

Second, assert the extracted value

sample-Assertion-Add JSON path assert (if you want to install this package ah AH)

Third, the JSON path espressions syntax learning

$: With object \ Element

@: current object \ Element

？ (): Apply filter (script) expression

Practice it yourself ....

1{"Store": {2     " Book": [ 3{"category":"Reference",4         "author":"Nigel Rees",5         "title":"Sayings of the Century",6         " Price":8.957       },8{"category":"Fiction",9         "author":"Evelyn Waugh",Ten         "title":"Sword of Honour", One         " Price":12.99 A       }, -{"category":"Fiction", -         "author":"Herman Melville", the         "title":"Moby Dick", -         "ISBN":"0-553-21311-3", -         " Price":8.99 -       }, +{"category":"Fiction", -         "author":"J. R. R. Tolkien", +         "title":"The Lord of the Rings", A         "ISBN":"0-395-19395-8", at         " Price":22.99 -       } -     ], -     "Bicycle": { -       "Color":"Red", -       " Price":19.95 in     } -   } to}

$.store.book[*].author: Author of all books in the store (four authors)

$.. Author: All Authors

$.store.*: Everything in the store, including book and bicycle

$.store. Price: Prices of all things

$.. BOOK[2]: The third book

$..book[0,1] /$..book[:2] ：前两本书

$.. Book[? ( @.isbn)]: Filter All books with ISBN number

$.. Book[? ( @.price<10)]: Filter All books that are cheaper than 10

$.. *: All elements in the XML document

JMeter--assertion of JSON response &json path espressions syntax