Google Apps脚本:UrlFetchApp发布文件 [英] Google Apps Script: UrlFetchApp Post File
问题描述
我试图通过Google Apps脚本将文件发布到REST API。我的想法是,我有一个创建Google文档副本的过程,我希望能够将这些新创建的文档发布到第三方系统。
我在 UrlFetchApp
中发现我可以发送文件。不过,我在发送正确的标题值时遇到了问题。
我的请求如下所示:
var file = DriveApp。 getFileById(FILEID);
var body = {
file:file.getAs(MimeType.PDF)
};
var headers = {
'Content-Disposition':'attachment; filename ='+ file.getName()+'',
'Content-Length':file.getSize()
};
当我调用UrlFetchApp.fetch(url,options)时,我的选项如下所示:
({
method:POST,
headers:{
'Content-Disposition':attachment ; filename = \My Merge Development_row_1.pdf \,
'Content-Length':90665,
授权:Bearer TOKEN
},
contentType: application / x-www-form-urlencoded,
muteHttpExceptions:true,
payload:{file:Blob}
})
我发送文件的API需要'Content-Length'
标题。但是,当我尝试为'Content-Length'
标头设置一个值时,我得到一个Apps脚本错误,属性提供了无效值:Header :Content-Length的
。如果我没有设置 Content-Length
头部,API会响应 Content-Length
和文件大小不匹配。
有关如何设置 Content-Length
标题的任何想法,以便我可以发布文件?
解决方案是:
$ b
将内容长度值从
头中的content-Length名称/值对移动到高级参数 contentLength
因此,在您的示例中,您的选项应该看起来像
({
method:POST,
headers:{
'Content-Disposition':attachment; filename = \My Merge Development_row_1.pdf \,
授权:Bearer TOKEN
},
contentLength:90665,
contentType:application / x-www-form-urlencoded,
muteHttpExceptions:true,
payload:{file:Blob}
})
编辑:添加了一个完整的示例函数来获取con tentLength和blob如下所示:
function testFilePost(){
var file = DriveApp.getFileById(doc_id).getAs (MimeType.PDF);
var headers = {
'Content-Disposition':'attachment; filename ='+ file.getName()+'',
};
var options =
{
method:post,
payload:file.getBytes(),
headers:headers,
contentLength:file.getBytes()。length,
};
var result = JSON.parse(UrlFetchApp.fetch('http://httpbin.org/post',options).getContentText());
Logger.log(result);
}
I'm trying to POST a file to a REST API via Google Apps Script. The idea is that I have a process that is creating copies of a Google Doc, and I want to be able to post those newly created Docs to a third party system.
I found in UrlFetchApp
that I can send files. However, I'm having issues sending the correct header values.
My request looks like so:
var file = DriveApp.getFileById(fileId);
var body = {
"file": file.getAs(MimeType.PDF)
};
var headers = {
'Content-Disposition': 'attachment; filename="'+ file.getName() +'"',
'Content-Length': file.getSize()
};
My options when I call UrlFetchApp.fetch(url, options) looks like :
({
method:"POST",
headers:{
'Content-Disposition':"attachment; filename=\"My Merge Development_row_1.pdf\"",
'Content-Length':90665,
Authorization:"Bearer TOKEN"
},
contentType:"application/x-www-form-urlencoded",
muteHttpExceptions:true,
payload:{file:Blob}
})
The API that I'm sending the files to requires the 'Content-Length'
header. But, when I try to set a value for 'Content-Length'
header I get an Apps Script error, "Attribute provided with invalid value: Header:Content-Length"
. If I don't set the Content-Length
header then the API responds that the Content-Length
and file size don't match.
Any ideas on how I set the Content-Length
header so I can POST the file?
There is an existing ticket highlighting that the documentation is not clear on this very issue
The solution is:
Move content length value from "content-Length" name/value pair in headers to the advanced argument "contentLength"
So in your example your options should look like
({
method:"POST",
headers:{
'Content-Disposition':"attachment; filename=\"My Merge Development_row_1.pdf\"",
Authorization:"Bearer TOKEN"
},
contentLength: 90665,
contentType:"application/x-www-form-urlencoded",
muteHttpExceptions:true,
payload:{file:Blob}
})
EDIT: Added a full example function to get contentLength and blob shown below:
function testFilePost() {
var file = DriveApp.getFileById(doc_id).getAs(MimeType.PDF);
var headers = {
'Content-Disposition': 'attachment; filename="'+ file.getName() +'"',
};
var options =
{
"method" : "post",
"payload": file.getBytes(),
"headers": headers,
"contentLength": file.getBytes().length,
};
var result = JSON.parse(UrlFetchApp.fetch('http://httpbin.org/post', options).getContentText());
Logger.log(result);
}
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