在 ROBOT Framework 中获取列表中的变量

Question

假设下面是我的回复正文

body={
  "message": {
    "Code": 26181,
    "rollnos": [
      {
        "ID": 1439173,
        "date_input": "2022-01-31 14:09:30.206748",
      }
    ],
    "start_date": "2022-01-31 00:00:00",
  }
}

我想在变量中设置 ID 值。我已经尝试了以下方法，但没有成功。

  ${json_response}=  set variable    ${xyz.json()}
  
  ${temp}=  Set Variable    ${json_response['message']}
  
  ${value_1}=  Set Variable    ${temp['rollnos']}
  
  ${register_id} =  Set Variable    ${value_1["ID"]

谁能帮我解决一下我哪里做错了。

Answer 1

嗯，当你说：

but it did not work out.

你没有提到错误信息是什么。

这是我对你的代码的解释：

  ${json_response}=  set variable    ${xyz.json()}
  # ${json_response} is now a dictionary with content: body=&{message}
  # So the next step would be: 
  ${temp}=  Set Variable    ${json_response['body']['message']}
  # And now we have: &{temp} = { Code:26181, &{rollnos}, ...
  # The next code will be correct
  ${value_1}=  Set Variable    ${temp['rollnos']}
  
  ${register_id} =  Set Variable    ${value_1['ID']

但是你得到了ID的值，你想设置它，所以这是另一个问题。

Answer 2

如果您已经有 body 作为字典，您只能使用测试示例中的最后 4 行。我还包括了从字符串到字典的转换，以备不时之需：

*** Settings ***
Library  Collections

Resource          robot/resources/environment_resources.robot

*** Variables ***
${body_temp}    {"message": {"Code": "26181", "rollnos": [{"ID": "1439173", "date_input": "2022-01-31 14:09:30.206748"}],"start_date": "2022-01-31 00:00:00"}}

*** Keywords ***
Converting a JSON File
    ${body}    evaluate  json.loads($body_temp)    json
    [Return]  ${body}

*** Test Cases ***
Example
    # Get body as dict
    ${body}=  converting a json file

    # Get the ID
    ${message} =    Get From Dictionary     ${body}    message
    ${rollnos} =    Get From Dictionary     ${message}    rollnos

    ${id} =   Get From Dictionary     ${rollnos}[0]    ID

    # Log the ID
    Log To Console    ID:${id}

Answer 3

Can someone please help where I went wrong in this.

您将 ${temp['rollnos']} 视为字典，但它是一个字典列表。

而不是这个：

${value_1}=  Set Variable    ${temp['rollnos']}

${register_id} =  Set Variable    ${value_1["ID"]

执行此操作，以获取字典中第一项的 ID：

${value_1}=  Set Variable    ${temp['rollnos'][0]}
#                                             ^^^
${register_id} =  Set Variable    ${value_1["ID"]}

在 ROBOT Framework 中获取列表中的变量

Fetching a variable inside a list in ROBOT Framework

robotframework

web-api-testing