在 postman 中向服务器发送数据，但在 Objective-C 中出现错误。
我试图从服务器上实现这个失败。我在下面提到的链接不起作用。获取错误上传失败。我做错了什么？
how to POST value while uploading image in iOS objective c
我的代码:
NSData *dataImage = UIImageJPEGRepresentation(myImage, 1.0f);
// set your URL Where to Upload Image
NSString *urlString = @"http://xxxxxxxxxxxxxxxx/index.php/API/uploadClaim";
NSDictionary *user = [[NSUserDefaults standardUserDefaults] objectForKey
"userDetails"];
// Create '
OST' MutableRequest with Data and Other Image Attachment.
NSMutableDictionary* _params = [[NSMutableDictionary alloc] init];
[_params setObject"filename" forKey"file_name"];
[_params setObject"photo" forKey"file_type"];
[_params setObject:[[user objectForKey"user_data"] objectForKey"id"] forKey"user_id"];
NSString *BoundaryConstant = @"----------V2ymHFg03ehbqgZCaKO6jy";
NSString* FileParamConstant = @"image";
NSURL* requestURL = [NSURL URLWithString:urlString];
// create request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:120];
[request setHTTPMethod"OST"];
NSString *contentType = [NSString stringWithFormat"multipart/form-data; boundary=%@", BoundaryConstant];
[request setValue:contentType forHTTPHeaderField: @"Content-Type"];
// post body
NSMutableData *body = [NSMutableData data];
// add params (all params are strings)
for (NSString *param in _params)
{
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
}
// add image data
if (dataImage) {
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:dataImage];
[body appendData:[[NSString stringWithFormat:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", BoundaryConstant] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// set the content-length
NSString *postLength = [NSString stringWithFormat:@"%lu", (unsigned long)[body length]];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
// set URL
[request setURL:requestURL];
NSURLResponse *response = nil;
NSError *requestError = nil;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&requestError];
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:returnData options:kNilOptions error:&requestError];
这是我上传一个或多个图像文件的工作代码:
请注意:您应该在具有正确键值的 NSDictionary 中传递图像/文件数据，并且您应该将键名称设置为您的服务器在上传调用中所期望的。
例如，在您的情况下，它是 file
parameters 字典将是您与 file
- (void) performNetworkEventRequestCallWithFileUpload 
NSMutableDictionary*) imagesData : (NSMutableDictionary*)parameters completionBlockvoid (^)(BOOL succeeded, NSDictionary *dict))completionBlock {
NSMutableURLRequest *urlRequest = [[NSMutableURLRequest alloc] init];
[urlRequest setURL:[NSURL URLWithString:BASE_URL]];
[urlRequest setHTTPMethod:@"OST"];
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[urlRequest addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSMutableData *body = [NSMutableData data];
[parameters enumerateKeysAndObjectsUsingBlock: ^(NSString *key, NSString *object, BOOL *stop) {
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"%@",object] dataUsingEncoding:NSUTF8StringEncoding]];
}];
[imagesData enumerateKeysAndObjectsUsingBlock: ^(NSString *key, NSData *object, BOOL *stop) {
if ([object isKindOfClass:[NSData class]]) {
if (object.length > 0) {
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
NSString *timeSTamp = [NSString stringWithFormat:@"%@",[NSDate date]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"%@\"; filename=\"%@.jpg\"\r\n",key,timeSTamp] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData
bject]];
}
}
}];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[urlRequest setHTTPBody:body];
AFHTTPSessionManager* manager = [AFHTTPSessionManager manager];
manager.responseSerializer.acceptableContentTypes = nil;
NSURLSessionDataTask *dataTask = [manager dataTaskWithRequest:urlRequest completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
completionBlock (NO, responseObject);
} else {
NSLog(@"success");
completionBlock (YES, responseObject);
}
}];
[dataTask resume];
}
关于ios - 如何在发布数据iOS objective-c 中将图像附件发送到服务器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47874414/
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