Question

对于Robotframework，在给定的测试用例code 1和code 2中访问字典对象。问题是，当我使用json.load转换我的json对象返回一个列表时，返回单个'而不是双逗号'对象的json键，当我不使用json.load时，它返回Unicode错误

定义库

*** Settings ***
Library  OperatingSystem
Library  Collections
Library  HttpLibrary.HTTP

*** Test Cases ***
Code1
    #get json file
    ${json_data}=    Get file  detail.json

    #get  dictionaries under list
    ${valuelist}=  Get Json Value    ${json_data}    /alladdress/addresslist

    # display it
    log to console  ${valuelist}

    # loop over  dictionaries under list
    : FOR  ${key}   in   @{valuelist.keys()}
    \  ${value}=    Get From Dictionary    ${valuelist}    ${key}

    # getting AttributeError: 'unicode' object has no attribute 'keys
    \  log to console   ${key},${value}


Code2
    # get json file
    ${json_data}=    Get file  detail.json

    # get  dictionaries under list
    ${valuelist}=  Get Json Value    ${json_data}    /alladdress/addresslist

    # use below line to avoid unicode error
    ${obj_list}=  evaluate    json.loads('''${valuelist}''')    json

    # display it
    log to console  ${obj_list}
    # loop over  dictionaries under list

    : FOR  ${key}   in   @{obj_list.keys()}
    \  ${value}=    Get From Dictionary    ${obj_list}    ${key}

    # getting AttributeError: 'list' object has no attribute 'keys'
    \  log to console   ${key},${value}

这里是 json文件

{
   "class":{
      "id":0,
      "name":"David"
   },
   "alladdress":{
      "count":3,
      "addresslist":[
         {
            "houseno":1,
            "streetno":5,
            "streetname":"tesla",
            "city":"ABC",
            "state":"AA",
            "country":"UK",
            "zip":85555
         },
         {
            "houseno":2,
            "streetno":6,
            "streetname":"honda",
            "city":"PQR",
            "state":"BB",
            "country":"IN",
            "zip":5252
         }
      ]
   }
}

Answer 1

在HttpLibrary库中，此处有Parse JSON关键字。它可以将使用Get JSON Value获取的JSON文档的字符串转换为字典。

所以这里的值是你不必“走”字典去到你正在寻找的节点。

*** Settings ***
Library  OperatingSystem
Library  HttpLibrary.HTTP

*** Test Cases ***

Fetch Address List
    ${json_data}=    Get file  details.json

    ${addressesJSONstring}    Get Json Value    ${json_data}    /alladdress/addresslist
    ${addresseslist}          Parse Json        ${addressesJSONstring}

    : FOR  ${addressDict}   in   @{addresseslist}
    \  log   ${addressDict['country']}

Answer 2

关键字Get json value似乎是返回字符串而不是对象。如果用使用python＆＃j; sson模块的代码替换该调用，则可以解析数据以找到所需内容。

例如，这将打印出每个地址字典：

*** Test Cases ***
Code1
    #get json file
    ${json_data}=    Get file  detail.json

    #get  dictionaries under list
    ${data}=  evaluate  json.loads($json_data)  json
    ${alladdress}=  get from dictionary  ${data}  alladdress
    ${addresslist}=  get from dictionary  ${alladdress}  addresslist

    # loop over  dictionaries under list
    log to console  addresses:
    : FOR  ${address}  in  @{addresslist}
    \   log to console  ${address}

使用循环抛出错误访问列表中的字典对象：列表'对象没有属性'键或unicode'对象没有属性'键

2 个答案: