如何使用HTTP HEADERS和使用Objective-C的FILE发送PUT请求？

Question

我是Objective-C的新手，请让我详细说明一下我在做什么...

我正在尝试使用PUT请求将文件上传到OneDrive。

PUT请求必须包含

Http标题

一驱动器文档

内容长度7919

内容范围字节0-7918 / 7919

并使用这些标头将文件上传

PUT https://sn3302.up.1drv.com/up/fe6987415ace7X4e1eF866337
Content-Length: 7919
Content-Range: bytes 0-7918/7919

<bytes 0-7918 of the file>

以下是使用Chrome POSTMAN的整个PUT请求的屏幕截图

我正在尝试通过以下标题发出PUT请求：

和一个文件

您能指导我如何使用Objective-C进行上述操作吗？

问题

POSTMAN一切正常，但是当我尝试使用Objective-C进行操作时，文件没有上传，得到的结果如下：

{“错误”：{“代码”：“ invalidRequest”，“消息”：“声明的片段长度与提供的字节数不匹配”}}

目标C代码

-(void)uploadFile:(NSString*)uploadUrl
{
    NSString *urlString = uploadUrl;

    NSData* file =  [NSData dataWithContentsOfFile: [@"/Users/username/Desktop/s.sql" stringByExpandingTildeInPath]];

    NSString* fileName = @"s.sql";


//

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:urlString]];
    [request setHTTPMethod:@"PUT"];


    NSString *boundary = @"---------------------------14737809831466499882746641449";
    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
    [request addValue:contentType forHTTPHeaderField: @"Content-Type"];
    [request addValue:@"7919" forHTTPHeaderField: @"Content-Length"];
    [request addValue:@"bytes 0-7918/7919" forHTTPHeaderField: @"Content-Range"];


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

    // Append the file
    [putData appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [putData appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"fileupload\"; filename=\"%@\"\r\n", fileName]dataUsingEncoding:NSUTF8StringEncoding]];
    [putData appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [putData appendData:[NSData dataWithData:file]];



    // Close
    [putData appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

    // Append
    [request setHTTPBody:putData];


    NSError *err;
    NSURLResponse *response;

    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];

    NSString *resSrt = [[NSString alloc]initWithData:responseData encoding:NSASCIIStringEncoding];


}

Answer 1

多亏了上帝，我终于找到了办法。 下面给出的是经过编辑且有效的代码：

-(void)uploadFile:(NSString*)uploadUrl
{
    NSString *urlString = uploadUrl;

    NSData* file =  [NSData dataWithContentsOfFile: [@"/Users/username/Desktop/s.sql" stringByExpandingTildeInPath]];

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:urlString]];
    [request setHTTPMethod:@"PUT"];


    [request addValue:@"7919" forHTTPHeaderField: @"Content-Length"];
    [request addValue:@"bytes 0-7918/7919" forHTTPHeaderField: @"Content-Range"];


    NSMutableData *putData = [NSMutableData data];
    [putData appendData:[NSData dataWithData:file]];


    // Append
    [request setHTTPBody:putData];


    NSError *err;
    NSURLResponse *response;

    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];

    NSString *resSrt = [[NSString alloc]initWithData:responseData encoding:NSASCIIStringEncoding];
    NSLog(resSrt);
}