我收到错误：
解析多部分请求时发现错误。在请求中找不到边界终结符“--BOUNDARY--”。
我尝试使用Firefox和chrome进行调试，结果相同。 任何帮助将不胜感激。
以下是我正在使用的代码：
Public Sub configureMultiPartFormDataRequest(ByVal request As HttpWebRequest, _
ByVal xmlBody As String, _
ByVal docName As String)
'Overwrite the default content-type header and set a boundary marker
request.ContentType = "multipart/form-data; boundary=BOUNDARY"
'Start building the multipart request body
Dim requestBodyStart As String = "\r\n\r\n--BOUNDARY\r\n" + _
"Content-Type: application/xml\r\n" + _
"Content-Disposition: form-data\r\n" + _
"\r\n" + _
xmlBody + "\r\n\r\n--BOUNDARY\r\n" + _
"Content-Type: application/pdf\r\n" + _
"Content-Disposition: file; filename=\" + docName + " \ documentId=1\r\n" + _
"\r\n"
Dim requestBodyEnd As String = "\r\n--BOUNDARY--\r\n\r\n"
'Read the contents of provided document into the request stream
Dim fileStream As FileStream = File.OpenRead(docName)
'Write the body of the request
Dim bodyStart() As Byte = System.Text.Encoding.UTF8.GetBytes(requestBodyStart.ToString())
Dim bodyEnd() As Byte = System.Text.Encoding.UTF8.GetBytes(requestBodyEnd.ToString())
Dim dataStream As Stream = request.GetRequestStream()
dataStream.Write(bodyStart, 0, requestBodyStart.ToString().Length)
'Read the file contents and write them to the request stream. (4096 Byte Blocks)
Dim buf(4096) As Byte
'Dim len As Integer
'While ((len = fileStream.Read(buf, 0, 4096)) > 0)
' dataStream.Write(buf, 0, len)
'End While
Dim bytesRead As Integer
Do
bytesRead = fileStream.Read(buf, 0, buf.Length)
If bytesRead > 0 Then
dataStream.Write(buf, 0, bytesRead)
End If
Loop While bytesRead > 0
dataStream.Write(bodyEnd, 0, requestBodyEnd.ToString().Length)
dataStream.Close()
End Sub
已添加05/09/2014 这是Fiddler2的实际请求文本。似乎bodyEnd被设置为“PDF-1.7”。我搜索了这个字符串的代码没有成功。感谢您的帮助：\ r \ n \ r \ n - BOUNDARY \ r \ nContent-Type：application / xml \ r \ nContent-Disposition：form-data \ r \ n \ r \ nndsentDocuSign API - Embedded Signing example1 \ 10.1.11.100 \ SecureDocs \ EnrollmentForms \ CrystalReport1.pdf1hmitchell@ata.eduA Adams10010011 \ r \ n \ r \ n - BOUNDARY \ r \ nContent-Type：application / pdf \ r \ nContent-Disposition：file;文件名= \ XXX \; documentId = 1 \ r \ n \ r \ n％PDF-1.7
大卫 感谢您修复BOUNDARY错误。我实现了你的xml示例，现在得到一个错误：“文档元素不包含编码文档，或者编码存在问题。” 这是请求： - 边界 Content-Type：application / xml 内容处理：表单数据
sentDocuSign API - 嵌入式签名example1C：\ Hold \ myXML.xml1hmitchell@ata.eduA Adams10010011
- 边界 内容类型：application / pdf 内容处理：文件; filename = \ C：\ Hold \ myXML.xml \ documentId = 1
<nameValue>
<name>canManageAccount</name>
<value>false</value>
</nameValue>
- 边界 -
感谢您的帮助!!!
答案 0 :(得分：1)
上面的代码片段缺少调用方法，所以我自己创建了如下所示的代码片段，以演示如何利用WebHookapp端点来捕获正在发送的内容。因此，我认为您会看到正文格式不正确，因为您尝试＆＃34;转义＆＃34; 换行符和回车符号vs使用具有正确值的chr。
代码我添加了上面的方法
Imports System.IO
Imports System.Net
Public Class Form1
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim myHTTPRequest As System.Net.HttpWebRequest = WebRequest.Create("http://webhookapp.com/1037371688646089664")
Dim myXML As String = "{SomeXMLorJason: sampleNotFormatedcorrectly}"
Dim myDocName As String = "c:\myXML.xml"
myHTTPRequest.Method = "POST"
configureMultiPartFormDataRequest(myHTTPRequest, myXML, myDocName)
myHTTPRequest.GetResponse()
End Sub
'Your Code goes here ---> from above:
End Class
文件c：\ myXML.xml
中的内容 <nameValue>
<name>canManageAccount</name>
<value>false</value>
</nameValue>
发送了什么：
POST /1037371688646089664
content-type multipart/form-data; boundary=BOUNDARY
host webhookapp.com
content-length 439
expect 100-continue
connection Keep-Alive
\r\n\r\n--BOUNDARY\r\nContent-Type: application/xml\r\nContent-Disposition: form-data\r\n\r\n{SomeXMLorJason: sampleNotFormatedcorrectly}\r\n\r\n--BOUNDARY\r\nContent-Type: application/pdf\r\nContent-Disposition: file; filename=\c:\myXML.xml \ documentId=1\r\n\r\n <nameValue>
<name>canManageAccount</name>
<value>false</value>
</nameValue>\r\n--BOUNDARY--\r\n\r\n
如何修复代码：
'Start building the multipart request body
' http://www.asciitable.com/
Dim asciLN As String = Chr(10)
Dim asciCR As String = Chr(13)
Dim requestBodyStart As String = asciCR + asciLN + asciCR + asciLN + "--BOUNDARY" + asciCR + asciLN + _
"Content-Type: application/xml" + asciCR + asciLN + _
"Content-Disposition: form-data" + asciCR + asciLN + _
asciCR + asciLN + _
xmlBody + asciCR + asciLN + asciCR + asciLN + "--BOUNDARY" + asciCR + asciLN + _
"Content-Type: application/pdf" + asciCR + asciLN + _
"Content-Disposition: file; filename=\" + docName + " \ documentId=1" + asciCR + asciLN + _
asciCR + asciLN
Dim requestBodyEnd As String = asciCR + asciLN + "--BOUNDARY--" + asciCR + asciLN + asciCR + asciLN
会产生：
POST /1037371688646089664
content-type multipart/form-data; boundary=BOUNDARY
host webhookapp.com
content-length 409
expect 100-continue
connection Keep-Alive
--BOUNDARY
Content-Type: application/xml
Content-Disposition: form-data
{SomeXMLorJason: sampleNotFormatedcorrectly}
--BOUNDARY
Content-Type: application/pdf
Content-Disposition: file; filename=\c:\myXML.xml \ documentId=1
<nameValue>
<name>canManageAccount</name>
<value>false</value>
</nameValue>
--BOUNDARY--
JSON中作为Multipart的一般信封应如下所示：
POST http://{server}/restapi/{apiVersion}/accounts/{accountId}/envelopes
X-DocuSign-Authentication: <DocuSignCredentials><Username>{name}</Username><Password>{password}</Password><IntegratorKey>{integrator_key}</IntegratorKey></DocuSignCredentials>
Accept: application/json
Content-Type: multipart/form-data; boundary=AAA
--AAA
Content-Type: application/json
Content-Disposition: form-data
{
"status":"sent",
"emailBlurb":"Test Email Body",
"emailSubject": "Test Email Subject - EnvelopeDefFull",
"documents": [{
"name": "test1.pdf",
"documentId":"1"
"order":"1"
}],
"recipients": {
"signers" : [{
"email": "test@email.com",
"name": "Sally Doe",
"recipientId":"1",
}]
}
}
--AAA
Content-Type: application/pdf
Content-Disposition: file; filename="test1.pdf";documentid=1
<document bytes removed>
--AAA--
答案 1 :(得分：-1)
一般来说，您的请求应如下所示。唯一的区别是此示例使用JSON格式而不是XML。只需更改您需要更改内容类型的application/json到application/xml，然后将JSON数据更改为XML格式。
POST http://{server}/restapi/{apiVersion}/accounts/{accountId}/envelopes
X-DocuSign-Authentication: <DocuSignCredentials><Username>{name}</Username><Password>{password}</Password><IntegratorKey>{integrator_key}</IntegratorKey></DocuSignCredentials>
Accept: application/json
Content-Type: multipart/form-data; boundary=AAA
--AAA
Content-Type: application/json
Content-Disposition: form-data
{
"status":"sent",
"emailBlurb":"Test Email Body",
"emailSubject": "Test Email Subject - EnvelopeDefFull",
"documents": [{
"name": "test1.pdf",
"documentId":"1"
"order":"1"
}],
"recipients": {
"signers" : [{
"email": "test@email.com",
"name": "Sally Doe",
"recipientId":"1",
}]
}
}
--AAA
Content-Type: application/pdf
Content-Disposition: file; filename="test1.pdf";documentid=1
<document bytes removed>
--AAA--
如果没有看到代码正在构建和发送的实际请求，我只能假设格式化有问题。确保在需要的地方有额外的换行符（CRLF），并且正确地将文档字节写入请求。如果你仍然卡住了，你可能想要通过Fiddler这样的工具来检查请求数据......