笔谈HTTP Multipart POST请求上传文件

//
//  Created by dev.temobi on 15/5/7.
//  Copyright (c) 2015年 dev.temobi. All rights reserved.
//

#import "ViewController.h"


#define Boudary @"7da29f2d890386"

//http://192.168.3.177:2800/upload
#define iAddrIP @"192.168.3.177"
#define iAddrPort 2800


@interface ViewController ()

@end

@implementation ViewController


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    [self uploadAudioToServiceSelectedDevice:@[@"86000123456884846234123456789007"] delegate:self];
    
}

- (void)uploadAudioToServiceSelectedDevice:(NSArray *)arrDevices delegate:(id)delegate//此delegate为 NSURLConnectionDelegate
{
    NSString *url = [NSString stringWithFormat:@"http://%@:%i/upload",iAddrIP,iAddrPort];
    
    NSMutableData *body = [ NSMutableData data ];
    
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", Boudary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"DevIDs\"\r\n\r\n%@\r\n", arrDevices[0]] dataUsingEncoding:NSUTF8StringEncoding]];
    
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", Boudary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"Transport\"\r\n\r\n%@\r\n", @"PCMA/8000/1"] dataUsingEncoding:NSUTF8StringEncoding]];
    
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", Boudary] dataUsingEncoding:NSUTF8StringEncoding]];
    NSString *TM_SDK_NULL_STRING = @"";
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"ClientID\"\r\n\r\n%@\r\n", TM_SDK_NULL_STRING] dataUsingEncoding:NSUTF8StringEncoding]];
    
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", Boudary] dataUsingEncoding:NSUTF8StringEncoding]];
    [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"fileData\"; filename=\"aaaaa.pcma\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; // －-注意只有一个\r\n
    [body appendData:[[NSString stringWithFormat:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; // －-注意有两个\r\n\r\n

    NSString *RecordAudioFilePath = [[NSBundle mainBundle] pathForResource:@"aaaaa" ofType:@"pcma"];
    NSData *fileData = [NSData dataWithContentsOfFile:RecordAudioFilePath]; // －－－－－－语音数据－－－－－－－－－
    [body appendData:fileData];
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", Boudary] dataUsingEncoding:NSUTF8StringEncoding]]; // －－－－－－注意分隔符Boudary前后各有一个\r\n－－－－－－－－－
    
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url]];
    [request setTimeoutInterval:0];
    [request setValue:@"zh-cn" forHTTPHeaderField:@"Accept-Language"];
    [request setValue:[NSString stringWithFormat:@"%lu",(unsigned long)body.length] forHTTPHeaderField:@"Content-Length"];
    [request setValue:@"no-cache" forHTTPHeaderField:@"Cache-Control"];
    [request setValue:@"Keep-Alive" forHTTPHeaderField:@"Connection"];
    [request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", Boudary] forHTTPHeaderField:@"Content-Type"];
    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:body];
    
    NSError *error = nil;
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error];
    if (data == nil) {
        NSLog(@"send request failed: %@", error);
    }
    
    [request release];
    
    NSString *response = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    NSLog(@"response: %@", response);
    [response release];
}

2015-05-08 10:10:11.834 PostDataToServer[4584:1627837] response: <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Message>
    <Header MsgSeq="0" MsgType="UploadResponse"/>
    <Result RetCode="400"/>
</Message>