Question

以下是我拥有的示例json文档或json变量。我正在使用python提取输出部分中提到的必填字段。

有人可以帮忙吗？

json_variable = 
    {  
       "server01":{  
          "address":"server01:5454",
          "options":{ },
          "state":"online"
       },
       "server02":{  
          "address":"server02:5454",
          "options":{ },
          "state":"online"
       },
       "server03":{  
          "address":"server03:5454",
          "options":{ },
          "state":"online"
       }
    }

 for x in json_variable:
        print(x["address"])

    Error:
      Traceback (most recent call last):
      File "<string>", line 30, in <module>
      File "<string>", line 18, in getServerStatus
      TypeError: 'shell.Dict' object is not iterable

我可以通过如下所示对字段进行硬编码来获得所需的输出，但是我想动态地做到这一点，因为服务器的数量取决于查询的系统和返回的json。

print(json_variable["server01"]["address"])
print(json_variable["server02"]["address"])
print(json_variable["server03"]["address"])

必需的输出：

server01:5454 --> online 
server02:5454 --> online
server03:5454 --> online

Answer 1

将其作为字典进行处理：

for k, v in sample.items():
      print(v['address'] + "-->" + v['state'])

Answer 2

这是从JSON获取服务器状态的另一种方法。

json_info = {
     "server01":{
     "address":"server01:5454",
     "options":{ },
     "state":"online"
   },
     "server02":{
     "address":"server02:5454",
     "options":{ },
     "state":"online"
  },
     "server03":{
     "address":"server03:5454",
     "options":{ },
     "state":"online"
  }
}

for server in json_info.values():
  server_status = server['state']
  if 'online' in server_status:
      server_name = server.get('address')
      print ('{} is online'.format(server_name.split(':')[0]))
      # output 
      # server01 is online
      # server02 is online
      # server03 is online
      # 
      # print ('{} --> online'.format(server_name))
      # output 
      # server01:5454 --> online
      # server02:5454 --> online
      # server03:5454 --> online
  else:
      server_name = server.get('address')
      print('{} is offline'.format(server_name.split(':')[0]))

如何从json输出中递归提取特定字段？

2 个答案: