Dynamics365 ExportPdfTemplateExportWordTemplate两个Action调用的body构造

news2025/5/18 14:44:51

这两天在用ExportPdfTemplate做pdf导出功能时，遇到了如下问题InnerException : Microsoft.OData.ODataException: An unexpected 'StartArray' node was found when reading from the JSON reader. A 'PrimitiveValue' node was expected.

我的场景是使用power automate根据单据的状态变化触发，向特定用户发送带pdf附件的邮件通知，pdf附件是基于Word模版生成而来

主要是通过ExportPdfTemplate这个Action，在automate中一个http请求拿到base64的文件流后赋值给send mail操作的附件里

参考的是这篇文章，在构造body的时候忽略了SelectedRecords这个参数的格式，浪费了我很多时间去解决问题

如下是最初的错误body

{
  "SelectedTemplate": {
    "documenttemplateid": "5aac6ad6-af13-f011-998a-002248582342",
    "@odata.type": "Microsoft.Dynamics.CRM.documenttemplate"
  },
  "EntityTypeCode": 10629,
  "SelectedRecords": [
    "8b59ddeb-b00a-f011-bae3-000d3aa1971f"
  ]
}

SelectedRecords接受的是一个字符串，而我设置成了数组，正确的是下面这样

{
  "SelectedTemplate": {
    "documenttemplateid": "5aac6ad6-af13-f011-998a-002248582342",
    "@odata.type": "Microsoft.Dynamics.CRM.documenttemplate"
  },
  "EntityTypeCode": 10629,
  "SelectedRecords": "[\"8b59ddeb-b00a-f011-bae3-000d3aa1971f"\]"
}

下面是一段前端示例代码，在你登录D365的情况下，可以打开F12，在console中直接可以用，只需要把body中的EntityTypeCode，documenttemplateid, SelectedRecords中的参数替换成你的就行，可以用来测试

(async function () {

    const url = "https://xx-dev.crm5.dynamics.com/api/data/v9.2/ExportPdfDocument"; // 替换组织域名

var body={
  "EntityTypeCode": 10629,
  "SelectedTemplate": {
    "@odata.type": "Microsoft.Dynamics.CRM.documenttemplate",
    "documenttemplateid": "5aac6ad6-af13-f011-998a-002248582342"
  },
  "SelectedRecords": "[\"{8b59ddeb-b00a-f011-bae3-000d3aa1971f}\"]"
}

    const response = await fetch(url, {
        method: "POST",
        headers: {
            "Content-Type": "application/json",
            "OData-MaxVersion": "4.0",
            "OData-Version": "4.0",
            "Accept": "application/json"
        },
        body: JSON.stringify(body)
    });

    if (!response.ok) {
        const errorText = await response.text();
        console.error("Error exporting PDF:", errorText);
    } else {
        const result = await response.json();
        console.log("PDF Exported:", result);
        // 可选：将结果中的 PDF 下载到本地
        const link = document.createElement('a');
        link.href = "data:application/pdf;base64," + result.PdfFile;
        link.download = "exported-document.pdf";
        link.click();
    }
})();

如下是后端C#代码中的代码示例，主要关注body的构造


 public void ExportPDF()
 {
     string actionParams = "{    " +
         "\"EntityTypeCode\": 106029,    " +
         "\"SelectedTemplate\": {        " +
             "\"@odata.type\": \"Microsoft.Dynamics.CRM.documenttemplate\",        " +
             "\"documenttemplateid\": \"eb6b70cf-542e-ed11-9daf-0017fa02473a\"    " +
         "},    " +
         "\"SelectedRecords\": \"[\"{72AFD26F-F337-ED11-9DAF-0017FA055BEE}\"]\"" +
         "}";

     var _service = new MSCRMService();

     string result = _service.CallCrmAction("", "", "ExportPdfDocument", actionParams);

 }

如下是power automate中的的body的构造参考