Azure APIM 策略改变有效负载主体

Question

我目前仍在 APIM 中探索。我在有效负载 #1 中有一个有效负载，我想将其转换为另一个有效负载 #2(预期)。
我将如何编辑我的策略来构建此有效负载？

有效负载1

{
    "dependtee_name": "Steve",
    "depdentee_last_name": "Rogers",
    "dependtee_comment" : "This is test",
    "file": "file.txt",
    "file_type": "text file",
    "insurer_name": "Steve",
    "insurer_last_name": "Rogers",
    "insurer_comment" : "This is test",
    "extra_info": "This is comments"
}

有效负载 2 - 预期

{
  "dependtee_info": {
    "name": "Steve",
    "last_name": "Rogers"

  },

  "file_details": {
    "all_file": [ "file.txt", "null" ],
    "fileFormat": "text file"
  },

  "insurer_info": {
    "i_name": "Tony",
    "i_last_name": "Stark"
  },
  "extra_info": "This is comments"
}

当前代码

<policies>
    <inbound>
        <base />
        <return-response>
            <set-status code="200" reason="ok" />
            <set-header name="Content-Type" exists-action="override">
                <value>application/json</value>
            </set-header>
            <set-body>@{
                var body = context.Request.Body.As<JObject>(true);

                var transformedBody = new JObject();
                transformedBody["extra_info"] = body["extra_info"];
                

                var dependentee= new JObject();
                dependetee["name"] = body["dependtee_name"];
                dependentee["lastName"] = body["depdentee_last_name"];
                transformedBody["dependtee_info"] = dependentee;

        

                var file_details = new JObject();
                dependentee["all_file"] = body["file"];
                dependentee["fileFormat"] = body["file_type"];
                transformedBody["file_details"] = file_details;

               var insurer_info = new JObject();
                dependetee["i_name"] = body["insurer_name"];
                dependentee["i_last_name"] = body["insurer_last_name"];
                transformedBody["insurer_info"] = insurer_info;

                return transformedBody.ToString();               
            }</set-body>
        </return-response>
    </inbound>
    <backend>
        <base />
    </backend>
    <outbound>
        <base />
    </outbound>
    <on-error>
        <base />
    </on-error>
</policies>

希望专门更改文件的正文。
我想知道如何在我的预期有效负载中添加这些方括号。
有效负载 2 应该有多个键“all_file”值，但我希望能够从有效负载 1 获取它。

感谢您的帮助

Answer 1

您必须创建一个 JArray和 Add字符串并将 JArray 分配给父对象:

var file_details = new JObject();
var all_File = new JArray();
all_File.Add(body["extra_info"]);
all_File.Add("null"); // does not makes sense to a null string
file_details["all_file"] = all_File;
file_details["fileFormat"] = body["file_type"];
transformedBody["file_details"] = file_details;

我不明白 Payload 2 - Expected 中 "null" 的用途:
"all_file": [ "file.txt", "null"], 它从哪里来？为什么它是字符串 "null" 而不是 null？

这是完整的固定策略:

<policies>
    <inbound>
        <base />
        <return-response>
            <set-status code="200" reason="ok" />
            <set-header name="Content-Type" exists-action="override">
                <value>application/json</value>
            </set-header>
            <set-body>@{
                var body = context.Request.Body.As<JObject>(true);

                var transformedBody = new JObject();
                transformedBody["extra_info"] = body["extra_info"];
                

                var dependentee= new JObject();
                dependentee["name"] = body["dependtee_name"];
                dependentee["lastName"] = body["depdentee_last_name"];
                transformedBody["dependtee_info"] = dependentee;

                var file_details = new JObject();
                var all_File = new JArray();
                all_File.Add(body["extra_info"]);
                all_File.Add("null"); // does not makes sense to use a null string
                file_details["all_file"] = all_File;
                file_details["fileFormat"] = body["file_type"];
                transformedBody["file_details"] = file_details;

                var insurer_info = new JObject();
                insurer_info["i_name"] = body["insurer_name"];
                insurer_info["i_last_name"] = body["insurer_last_name"];
                transformedBody["insurer_info"] = insurer_info;

                return transformedBody.ToString();               
            }</set-body>
        </return-response>
    </inbound>
    <backend>
        <base />
    </backend>
    <outbound>
        <base />
    </outbound>
    <on-error>
        <base />
    </on-error>
</policies>

结果: