1、下载地址,及插件文档资料
https://jmeter-plugins.org/wiki/JSONPathExtractor/
json信息如下
{
        "error_code": 0,
        "stu_info": [
                {
                        "id": 5047,
                        "name": "lw",
                        "sex": "男",
                        "age": 28,
                        "addr": "陕西西安高新区32号",
                        "grade": "天蝎座",
                        "phone": "15512532946",
                        "gold": 1600
                }
        ]
}
2、在http请求中添加json path extractor 或者 json extractor或者正则表达式提取器

3、json 插件的配置方式及正则表达式的配置方式



4、查看结果
 

5、json的使用方法
{ "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. | 
