使用NSURLConnection发送文件 [英] send a file using NSURLConnection

问题描述

您好我使用以下代码进行NSURLConnection

Hi I am using the following code for NSURLConnection

 //initialize new mutable data
responseData = [[NSMutableData alloc] init];
//initialize url that is going to be fetched.
NSURL *url = [NSURL URLWithString:URLCALL];

//initialize a request from url
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[url standardizedURL]];

//set http method
[request setHTTPMethod:@"POST"];
//initialize a post data
 NSString *postData = [[NSString alloc] initWithString:@"action=3&senderCountryCode=91&senderPhoneNo=9573795715& receiverPhoneNo=9336240585&version=1.0"];
//set request content type we MUST set this value.

[request setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];

//set post data of request
[request setHTTPBody:[postData dataUsingEncoding:NSUTF8StringEncoding]];

//initialize a connection from request
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];    
//start the connection
[connection start];

现在我必须添加一个文件作为多部分类型请帮帮我怎样才能使用这个

Now I have to add a file as multipart type Please help me how can I use this

推荐答案

试试这个&检查：

Try this & check:

- (NSURLRequest *)buildRequest:(NSData *)paramData fileName:(NSString *)name {
    NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
    NSString *charset = (NSString *)CFStringConvertEncodingToIANACharSetName(CFStringConvertNSStringEncodingToEncoding(NSUTF8StringEncoding));
    [request setURL:self.url];
    [request setHTTPMethod:self.method];

    NSString *boundary = @"0xKhTmLbOuNdArY";
    NSString *endBoundary = [NSString stringWithFormat:@"\r\n--%@\r\n", boundary];

    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; charset=%@; boundary=%@", charset, boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

    NSMutableData *tempPostData = [NSMutableData data]; 
    [tempPostData appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    // Sample Key Value for data
    [tempPostData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", @"Key_Param"] dataUsingEncoding:NSUTF8StringEncoding]];
    [tempPostData appendData:@"Value_Param"] dataUsingEncoding:NSUTF8StringEncoding]];
    [tempPostData appendData:[endBoundary dataUsingEncoding:NSUTF8StringEncoding]];

    // Sample file to send as data
    [tempPostData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@\"\r\n", name] dataUsingEncoding:NSUTF8StringEncoding]];
    [tempPostData appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
    [tempPostData appendData:paramData];
    [tempPostData appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [request setHTTPBody:tempPostData];
    return request;
}

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