(NSMutableURLRequest *)PostImageRequest:(NSString )URLString
UIImage:(UIImage)image
parameters:(NSDictionary *)parameters
success:(void (^)(id))success
failure:(void (^)(NSError *))failure
{
_success = [success copy];
_failure = [failure copy];
//分界線的標(biāo)識(shí)符
NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";
//根據(jù)url初始化request
_request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:URLString]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10];
//分界線 --AaB03x
NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];
//結(jié)束符 AaB03x--
NSString endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];
//得到圖片的data
NSData data = UIImageJPEGRepresentation(image, 1);
//http body的字符串
NSMutableString *body=[[NSMutableString alloc]init];
//參數(shù)的集合的所有key的集合
NSArray *keys= [parameters allKeys];

//遍歷keys
for(int i=0;i<[keys count];i++)
{
//得到當(dāng)前key
NSString *key=[keys objectAtIndex:i];
//如果key不是pic，說明value是字符類型，比如name：Boris
if(![key isEqualToString:@"pic"])
{
//添加分界線梳码，換行
[body appendFormat:@"%@\r\n",MPboundary];
//添加字段名稱，換2行
[body appendFormat:@"Content-Disposition: form-data; name="%@"\r\n\r\n",key];
//添加字段的值
[body appendFormat:@"%@\r\n",[parameters objectForKey:key]];
}
}

////添加分界線龙致，換行
[body appendFormat:@"%@\r\n",MPboundary];
//聲明pic字段，文件名為boris.png
[body appendFormat:@"Content-Disposition: form-data; name="ImageField"; filename="x1234.png"\r\n"];
//聲明上傳文件的格式
[body appendFormat:@"Content-Type: image/jpeg\r\n\r\n"];

//聲明結(jié)束符：--AaB03x--
NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];
//聲明myRequestData顷链，用來放入http body
NSMutableData *myRequestData=[NSMutableData data];
//將body字符串轉(zhuǎn)化為UTF8格式的二進(jìn)制
[myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];
//將image的data加入
[myRequestData appendData:data];
//加入結(jié)束符--AaB03x--
[myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];

//設(shè)置HTTPHeader中Content-Type的值
NSString *content=[[NSString alloc] initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY];
//設(shè)置HTTPHeader
[_request setValue:content forHTTPHeaderField:@"Content-Type"];
//設(shè)置Content-Length
[_request setValue:[NSString stringWithFormat:@"%d", [myRequestData length]] forHTTPHeaderField:@"Content-Length"];
//設(shè)置http body
[_request setHTTPBody:myRequestData];
//http method
[_request setHTTPMethod:@"POST"];

return _request;
}