在iOS中发送音频文件和JSON字符串

问题描述

我试图将一个音频文件和一个JSON字符串发送到PHP服务器。用下面的代码将发送JSON，但文件到达空。如果我把JSON块放在音频块下面，文件完全到达，但是JSON是空的。 （NSString *）filePath URL：（NSString *）urlString JSON：（NSData *）{/ * ）jsonBody
{
NSString * jsonString = [[NSString alloc] initWithData：jsonBody encoding：NSUTF8StringEncoding];
NSMutableURLRequest * request = [[NSMutableURLRequest alloc] init];
[request setURL：[NSURL URLWithString：urlString]];
[request setHTTPMethod：@POST];
$ b $ if（[defaults objectForKey：@UserToken]）{
//将头添加到请求中。
[request addValue：[defaults objectForKey：@UserToken] forHTTPHeaderField：@token];
}

NSString * boundary = [NSString stringWithString：@--------------------------- 14737809831466499882746641449\" ];
NSString * contentType = [NSString stringWithFormat：@multipart / form-data; boundary =％@，boundary];
[request addValue：contentType forHTTPHeaderField：@Content-Type];


NSMutableData * body = [NSMutableData data];
[body appendData：[[NSString stringWithFormat：@\r\\\
- ％@ \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[[NSString stringWithString：@Content-Disposition：form-data; name = \body \\r\\\
] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[[NSString stringWithString：@Content-Type：application / json\r\\\
\r\\\
] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[[NSString stringWithFormat：@％@ \r\\\
，jsonString] dataUsingEncoding：NSUTF8StringEncoding]];

[body appendData：[[NSString stringWithFormat：@\r\\\
- ％@ \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[[NSString stringWithString：@Content-Disposition：form-data; name = \recording\; filename = \recording.wav\\r\\\
] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[[NSString stringWithString：@Content-Type：application / octet-stream\r\\\
\r\\\
] dataUsingEncoding：NSUTF8StringEncoding]];
[body appendData：[NSData dataWithContentsOfFile：filePath]];
[body appendData：[[NSString stringWithFormat：@\r\\\
- ％@ - \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]];

//设置请求体
[request setHTTPBody：body];

//发送请求（提交表单）并得到响应
NSData * returnData = [NSURLConnection sendSynchronousRequest：request returningResponse：nil error：nil];
NSString * returnString = [[NSString alloc] initWithData：returnData encoding：NSUTF8StringEncoding];

NSLog（@％@，returnString）;

解决方案

作为字符串参数，将二进制转换为Base64字符串。

看看的Base64编码信息。

帮助：）

I'm trying to send both an audio file and a JSON string to a PHP server. With the following code will send the JSON, but the file arrives empty. If I put the JSON block below the audio block, the file with completely arrive, but the JSON is empty. Any thoughts?

- (void)sendFile:(NSString *)filePath URL:(NSString *)urlString JSON:(NSData *)jsonBody
    {
        NSString *jsonString = [[NSString alloc] initWithData:jsonBody encoding:NSUTF8StringEncoding];
        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
        [request setURL:[NSURL URLWithString:urlString]];
        [request setHTTPMethod:@"POST"];

        if ([defaults objectForKey:@"UserToken"]) {
            // add the header to the request.
            [request addValue:[defaults objectForKey:@"UserToken"] forHTTPHeaderField:@"token"];
        }

        NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
        NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
        [request addValue:contentType forHTTPHeaderField: @"Content-Type"];


        NSMutableData *body = [NSMutableData data];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"body\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Type: application/json\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"%@\r\n", jsonString] dataUsingEncoding:NSUTF8StringEncoding]];

        [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"recording\"; filename=\"recording.wav\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[NSData dataWithContentsOfFile:filePath]];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

        // set request body
        [request setHTTPBody:body];

        // send the request (submit the form) and get the response
        NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
        NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];

        NSLog(@"%@", returnString);
}

解决方案

You can send the file easily as a string parameter by converting the binary to Base64 string.

Take a look at here for information on Base64 encoding on Mac and iOS.

Hope it helps :)

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