Python – jsonpath 简单使用

• 第三方包使用的时候需要单独安装
• 使用场景：快速提取接口返回的JSON串中的某一个字段的值

import json

import jsonpath

json_str = '''
        {
      "success": true,
      "code": 200,
      "message": null,
      "data": {
        "message": null,
        "result": null,
        "pageNum": null,
        "pageSize": null,
        "totalRows": null,
        "totalPages": null,
        "recommendList": [
          {
            "recommendKeyWord": "西门子 PLC S7-1200系列  CPU模块",
            "recommendHighLight": "西门子 PL<em>C</em> <em>S</em>7<em>-</em><em>1</em><em>2</em><em>0</em><em>0</em>系列  <em>C</em>P<em>U</em>模块",
            "productCodeAccessId": "24ff7c58b96449ad90ffd2dbb5b1be44",
            "productCode": null,
            "productSerialAccessId": "68fd719a771f4fec8ef0e1ebe594bf11",
            "productSerialCode": "ILC-S7-1200-CPU",
            "childCategoryCode": "I10",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "开关电源 导轨式安装 欧姆龙 S8VK-C系列 60/120/240/480 单组输出",
            "recommendHighLight": "开关电源 导轨式安装 欧姆龙 <em>S</em>8VK<em>-</em><em>C</em>系列 <em>6</em><em>0</em>/<em>1</em><em>2</em><em>0</em>/<em>2</em><em>4</em><em>0</em>/<em>4</em>8<em>0</em> 单组输出",
            "productCodeAccessId": "6f25a5fe6a914af9bbcb4e1e3f531588",
            "productCode": null,
            "productSerialAccessId": "823107ded448415eb96f658ebfabb3d3",
            "productSerialCode": "IKD-S8VKC",
            "childCategoryCode": "I04",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "摩莎 网关 1100Mbps 1端口 RS232/422/485",
            "recommendHighLight": "摩莎 网关 <em>1</em><em>1</em><em>0</em><em>0</em>Mbp<em>s</em> <em>1</em>端口 R<em>S</em><em>2</em>3<em>2</em>/<em>4</em><em>2</em><em>2</em>/<em>4</em>85",
            "productCodeAccessId": "776832d8fbb44061bc381c70c0ff1a61",
            "productCode": null,
            "productSerialAccessId": "b4d018121472452f82028a161dd09f89",
            "productSerialCode": "IVX-13",
            "childCategoryCode": "I18",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "西门子 PLC S7-1200系列  温度模块",
            "recommendHighLight": "西门子 PL<em>C</em> <em>S</em>7<em>-</em><em>1</em><em>2</em><em>0</em><em>0</em>系列  温度模块",
            "productCodeAccessId": "24ff7c58b96449ad90ffd2dbb5b1be44",
            "productCode": null,
            "productSerialAccessId": "b95bc807da9a4c609e3bdf05a54fe984",
            "productSerialCode": "ILC-S7-1200-WD",
            "childCategoryCode": "I10",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "西门子 PLC S7-1200系列  模拟量模块",
            "recommendHighLight": "西门子 PL<em>C</em> <em>S</em>7<em>-</em><em>1</em><em>2</em><em>0</em><em>0</em>系列  模拟量模块",
            "productCodeAccessId": "24ff7c58b96449ad90ffd2dbb5b1be44",
            "productCode": null,
            "productSerialAccessId": "b1837e9e02364b61980fbac63c2e23f4",
            "productSerialCode": "ILC-S7-1200-MNL",
            "childCategoryCode": "I10",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "世达 6孔背绒砂碟Ø125xP80/125xP240/Ø125xP600",
            "recommendHighLight": "世达 <em>6</em>孔背绒砂碟Ø<em>1</em><em>2</em>5xP8<em>0</em>/<em>1</em><em>2</em>5xP<em>2</em><em>4</em><em>0</em>/Ø<em>1</em><em>2</em>5xP<em>6</em><em>0</em><em>0</em>",
            "productCodeAccessId": "655e38b7d61a4aee9ded85771c853e75",
            "productCode": null,
            "productSerialAccessId": "92fa0eabb8de4685bc5d17324783aa97",
            "productSerialCode": "LSD-556",
            "childCategoryCode": "L04",
            "parentCategoryCode": "L",
            "parentCategoryAccessId": "b865daf29e4b4a4f9176acf0bd7be47f",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "西门子 PLC  S7-1200系列 I/O扩展模块",
            "recommendHighLight": "西门子 PL<em>C</em>  <em>S</em>7<em>-</em><em>1</em><em>2</em><em>0</em><em>0</em>系列 I/O扩展模块",
            "productCodeAccessId": "24ff7c58b96449ad90ffd2dbb5b1be44",
            "productCode": null,
            "productSerialAccessId": "91b299b93d7b42daa6e4a54d340fc2bc",
            "productSerialCode": "ILC-S7-1200-IO",
            "childCategoryCode": "I10",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "开关电源 平板式安装 欧姆龙 S8FS-C系列 25/35/75/100/150/200/350 单组",
            "recommendHighLight": "开关电源 平板式安装 欧姆龙 <em>S</em>8F<em>S</em><em>-</em><em>C</em>系列 <em>2</em>5/35/75/<em>1</em><em>0</em><em>0</em>/<em>1</em>5<em>0</em>/<em>2</em><em>0</em><em>0</em>/35<em>0</em> 单组",
            "productCodeAccessId": "6f25a5fe6a914af9bbcb4e1e3f531588",
            "productCode": null,
            "productSerialAccessId": "9276f07e98504adeb6fcf74250e8d7cf",
            "productSerialCode": "IKD-S8FSC",
            "childCategoryCode": "I04",
            "parentCategoryCode": "I",
            "parentCategoryAccessId": "24f420a6f5d2454780d51628b2a7c808",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "史丹利(Stanley) 23件装公制塞尺0.02-1.00mm",
            "recommendHighLight": "史丹利(<em>S</em>tanley) <em>2</em>3件装公制塞尺<em>0</em>.<em>0</em><em>2</em><em>-</em><em>1</em>.<em>0</em><em>0</em>mm",
            "productCodeAccessId": "ea85239bb0e343a88b17a66e54b2dca2",
            "productCode": null,
            "productSerialAccessId": "11cb6b4d78824be5907d7d7ff9d107c2",
            "productSerialCode": "LMC-000041",
            "childCategoryCode": "L02",
            "parentCategoryCode": "L",
            "parentCategoryAccessId": "b865daf29e4b4a4f9176acf0bd7be47f",
            "recommendType": 0,
            "paramInfoList": null
          },
          {
            "recommendKeyWord": "博世 GCO 14-24型材切割机",
            "recommendHighLight": "博世 G<em>C</em>O <em>1</em><em>4</em><em>-</em><em>2</em><em>4</em>型材切割机",
            "productCodeAccessId": "30210f70152c481da73ff521f0ba0937",
            "productCode": null,
            "productSerialAccessId": "de6f13b0ddba4c93972109ad42ec99cf",
            "productSerialCode": "LDC-BS-000081",
            "childCategoryCode": "L09",
            "parentCategoryCode": "L",
            "parentCategoryAccessId": "b865daf29e4b4a4f9176acf0bd7be47f",
            "recommendType": 0,
            "paramInfoList": null
          }
        ]
      }
    }
    '''

json_data = json.loads(json_str)
print(jsonpath.jsonpath(json_data, '$.data.recommendList[*].productSerialCode'))

# out:
'''
['ILC-S7-1200-CPU', 'IKD-S8VKC', 'IVX-13', 'ILC-S7-1200-WD', 'ILC-S7-1200-MNL', 'LSD-556', 'ILC-S7-1200-IO', 'IKD-S8FSC', 'LMC-000041', 'LDC-BS-000081']
'''

https://blog.csdn.net/fallenjency/article/details/123276600

原文地址：http://www.cnblogs.com/czzz/p/16807974.html