Business Central销售订单附件上传报错：Read called with an open stream

问题详情 #

我尝试使用POST /documentAttachments API为Business Central的销售订单添加文档附件，但一直遇到如下错误：

Read called with an open stream or textreader. Please close any open streams or text readers before calling Read. CorrelationId: bee212fd-2651-45e1-b57c-84926816a7ea

我已经尝试过多种base64编码方式，都无法解决这个问题。另外，我测试过POST /attachments端点可以正常完成上传，但文件会被放到「传入文档」中，而不是销售订单的「附件」面板里。根据我的了解，/documentAttachments才是对应销售订单附件面板的正确端点。

当前使用的Vue3+Axios代码 #

const attachFileToBCModule = async (payload) => {  
  const { module, recordId, file, config } = payload;  
  const attachmentEndpoint = replaceUrlPlaceholders(attachmentEndpointFormat, config);  
  try {  
    const token = await acquireToken('businesscentral');  
    // Process file completely before making API call  
    const fileContent = await file.arrayBuffer();  
    const uint8Array = new Uint8Array(fileContent);  
    const binaryString = Array.from(uint8Array, byte => String.fromCharCode(byte)).join('');  
    const base64Content = btoa(binaryString);  

    const fileName = file.name;  
    const fileSize = file.size;  

    const uploadUrl2 = `${attachmentEndpoint}/documentAttachments`;  
    const uploadResponse2 = await axios.post(  
      uploadUrl2,  
      {  
        fileName: fileName,  
        byteSize: fileSize,  
        attachmentContent: base64Content,  
        parentId: recordId,  
        parentType: 'Sales Order',  
      },  
      {  
        headers: {  
          Authorization: `Bearer ${token}`,  
          'Content-Type': 'application/json',  
        },  
      }  
    );  

    return {  
      status: 201,  
      message: `Attachment uploaded to ${module} successfully.`,  
      data: { upload2: uploadResponse2.data },  
    };  
  } catch (err) {  
    console.error('Error uploading attachment:', err?.response?.data || err.message);  
    return {  
      status: err.response?.status || 400,  
      error: err.response?.data?.error?.message || err.response?.data || 'Attachment upload failed',  
    };  
  }  
};

附件面板位置截图 #

内容的提问来源于stack exchange，提问作者Lekz Flores