Splicing Upload file data

Learn to splice and upload file data .

{

* Some servers can submit some text content to the server while uploading files.

* Typical applications :

<1> sina Weibo : upload images at the same time , send a Weibo message !

<2> Shopping Review : when you buy a product, post a comment with a picture + comment content !

data format for multiple file uploads 3

{

Content-type:multipart/form-data; Boundary=boundary

//------The following, is the binary data format provided to the server

--boundary\r\n

Content-disposition:form-data; Name= "userfile[]", filename="Aaa.txt"\ r \ n

content-type:application/octet-stream\r\n\r\n

File binary Data

\ r \ n

--boundary\r\n

Content-disposition:form-data; Name= "userfile[]"; filename="AAA copy. txt"\ r \ n

content-type:application/octet-stream\r\n\r\n

File binary Data

\ r \ n

--boundary\r\n

//Username is the name of the script File receive parameter

Content-disposition:form-data; Name="username"\r\n\r\n

Plain Text binary data

\ r \ n

--boundary--

// ------

The above section is the constituent format of the binary data sent to the server ( example )

}

if in iOS , to implement POST upload file , need to follow the above format , splicing data !

because : format is the standard format specified by the company, Apple does not do any encapsulation ! Other languages , have done the encapsulation !

the above three kinds of data splicing format , we need to understand and can be splicing one of their own !

" third-party frameworks do file uploads :

-AFN can upload "a file" at the same time, Some format files , with AFN cannot upload !

-ASI can upload multiple files at the same time, MRC , stopped updating , designed target platform , IOS 2.0/ios 3.0 !

}

Splicing Upload file data