最近搞图片上传，折腾了一个星期终于做出来了，网上搜出来的方法几乎都是好几年前的，试了好多都不能用，此次把代码公布出来供大家参考。

注：部分代码是后台写的，此方法没用到第三方库。

1.图片保存到本地同时上传服务器

(void)saveImage:(UIImage *)image {

//NSLog(@“保存头像！”);

//[userPhotoButton setImage:image forState:UIControlStateNormal];

BOOL success;

NSFileManager *fileManager = [NSFileManager defaultManager];

NSError *error;

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *imageFilePath = [documentsDirectory stringByAppendingPathComponent:@“selfPhoto.jpg”];

NSLog(@“imageFile->>%@”,imageFilePath);

success = [fileManager fileExistsAtPath:imageFilePath];

if(success) {

success = [fileManager removeItemAtPath:imageFilePath error:&error];

}

//UIImagesmallImage=[self scaleFromImage:image toSize:CGSizeMake(80.0f, 80.0f)];//将图片尺寸改为8080

UIImage *smallImage = [self thumbnailWithImageWithoutScale:image size:CGSizeMake(93, 93)];

[UIImageJPEGRepresentation(smallImage, 1.0f) writeToFile:imageFilePath atomically:YES];//写入文件

UIImage *selfPhoto = [UIImage imageWithContentsOfFile:imageFilePath];//读取图片文件

self.img.image = selfPhoto;

NSLog(@“selfPhoto = %@”,selfPhoto);

NSURL * url = [NSURL URLWithString:@"http://blog.sina.com.cn/tmyij"];

NSData *imageData = UIImageJPEGRepresentation(selfPhoto,1.0f);

[self uploadFileWithURL:url data:imageData];

}

2.下面俩个方法都是设置请求参数

static NSString *boundaryStr = @"–";

static NSStringrandomIDStr = @"****";

static NSString *uploadID = @“file”;

(NSString *)topStringWithMimeType:(NSString *)mimeType uploadFile:(NSString *)uploadFile

{

NSMutableString *strM = [NSMutableString string];

[strM appendFormat:@"%@%@\r\n", boundaryStr, randomIDStr];

[strM appendFormat:@“Content-Disposition: form-data; name=”%@"; filename="%@"\r\n", uploadID, uploadFile];

[strM appendFormat:@“Content-Type: %@\r\n”, mimeType];

[strM appendFormat:@"\r\n"];

NSLog(@"%@", strM);

return [strM copy];

}

(NSString *)bottomString

{

NSMutableString *strM = [NSMutableString string];

[strM appendFormat:@"%@%@\r\n", boundaryStr, randomIDStr];

[strM appendString:@“Content-Disposition:form-data; name=“number”\r\n”];

[strM appendFormat:@"\r\n"];

[strM appendString:@“1234566788”];//上传的参数parameter

[strM appendFormat:@"\r\n"];

NSLog(@"%@", strM);

return [strM copy];

}

3.图片上传服务器

(void)uploadFileWithURL:(NSURL *)url data:(NSData *)data

{

NSString *topStr = [self topStringWithMimeType:@“application/img” uploadFile:@“myHead.jpg”];

NSString *bottomStr = [self bottomString];

NSMutableData *dataM = [NSMutableData data];

[dataM appendData:[bottomStr dataUsingEncoding:NSUTF8StringEncoding]];

[dataM appendData:[topStr dataUsingEncoding:NSUTF8StringEncoding]];

[dataM appendData:data];

[dataM appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

NSString * s = [NSString stringWithFormat:@"%@%@%@\r\n",boundaryStr, randomIDStr, boundaryStr];

[dataM appendData:[str22 dataUsingEncoding:NSUTF8StringEncoding]];

NSLog(@"%@%@%@",topStr,data,bottomStr);

// 1. Request

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:20.0f];

request.HTTPBody = dataM;

request.HTTPMethod = @“POST”;

NSString *strLength = [NSString stringWithFormat:@"%ld", (long)dataM.length];

[request setValue:strLength forHTTPHeaderField:@“Content-Length”];

NSString *strContentType = [NSString stringWithFormat:@“multipart/form-data;boundary=%@”, randomIDStr];

[request setValue:strContentType forHTTPHeaderField:@“Content-Type”];

[NSURLConnection sendAsynchronousRequest:request

queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse

*response, NSData *data, NSError *connectionError) {

NSString *result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

NSLog(@"%@", result);

}];

}