在 SuiteScript 中使用 aws-sdk 加载 PDF 文档失败

Question

我将 pdf 文件上传到 S3 时遇到问题。 上传过程成功，我可以在存储桶中看到我的文件。 但每当我尝试下载或查看存储桶中的文件时，我都会收到此错误“错误 无法加载 PDF 文档。”尝试从不同的浏览器打开文件，但出现相同的错误。这是我处理此问题的代码 使用“https://gist.github.com/binhp/52e2254420a638d9da5c4cf33dde3c46”的库

/**

• @NApi版本2.x
• @NScriptType Suitelet */ 定义（[“N/https”，“N/文件”，“N/log”，“/SuiteScripts/ns-aws-s3”，“N/encode”]，函数（https，nfile，nLog，AWS，nEncode ）{

函数 onRequest(scriptContext) {

var awsAccessKey = "";
var awsSecretKey = "";
var awsBucketName = "";
var awsContentEncoding = "UTF-8";

var selectedFile = nfile.load({ id: 11987    });
var fileNameSplit = selectedFile.name.split(".");
var fileExtension = fileNameSplit.pop();
var fileName = fileNameSplit.shift();

var selectedFileContent = selectedFile.getContents();


var keyFileName = fileName + "-" + Date.now() + "." + fileExtension;

var option = { 
  region: "ap-southeast-1",
  accessKeyId: awsAccessKey,
  secretAccessKey: awsSecretKey,
};
var s3Obj = new AWS.S3(option);

const params ={
  
    Bucket: awsBucketName,
    Key: keyFileName,
    Body: selectedFileContent,
    // ContentEncoding: awsContentEncoding,
    ServerSideEncryption: 'AES256', // Optional
    ACL:   "public-read-write" ,
    ContentType: getContentTypeByFileExtension(fileExtension),
  };

  s3Obj.putObject( params , function (err,data) {
  
    if (err) {
      nLog.error("s3Error", JSON.stringify(err));
    } else {
      nLog.debug("S3putObject", JSON.stringify(data));
    }
  }
  );

var preSignedUrlParams = {
  Bucket: awsBucketName,
  Key: keyFileName,
};

var preSignedUrl = s3Obj.getSignedUrl("getObject", preSignedUrlParams);

nLog.debug("Pre-signed URL:", preSignedUrl);

// Retrieve file content from the pre-signed URL
var response = https.get({ url: preSignedUrl });

if (response.code === 200) {
  var fileContent = response.body;
  // Process the file content here
} else {
  nLog.debug("Error retrieving file content. HTTP response code:", response.code);
}


var file = nfile.create({
  name: "file_name.pdf",
  fileType: nfile.Type.PDF,
  contents: fileContent,
  folder: -20, // Replace with the appropriate folder ID
});
var fileId = file.save();
nLog.debug("file save with id" + fileId)

}

函数 getContentTypeByFileExtension(fileExtension) { var 内容类型；

switch (fileExtension.toLowerCase()) {
  case "pdf":
    contentType = "application/pdf";
    break;
  case "png":
    contentType = "image/png";
    break;
  case "jpg":
  case "jpeg":
    contentType = "image/jpeg";
    break;
  case "txt":
    contentType = "text/plain";
    break;
  // Add more cases for other file extensions as needed
  default:
    contentType = "application/octet-stream"; // Fallback content type
    break;
}

return contentType;

}

返回{ onRequest: onRequest, }; });

但是，当我尝试从 s3 存储桶获取上传的文件时，它会正确检索内容。

我尝试使用 Upload() 函数而不是 putObject() 但总是收到此错误“错误：代码 400：”没有消息正文

Answer 1

您可以使用“渲染”模块读取文件内容并尝试上传那些应该可以工作的文件内容。

let renderer = render.create();
renderer.addCustomDataSource({
          format: render.DataSource.OBJECT,
          alias: "pdf data",
          data: pdfData,
        });
 var newfile = renderer.renderAsPdf();
let fileContents = newfile.getContents();

并上传文件内容。