Question

在我的IOS应用程序中，我想使用HTTP请求将图像与图像名称一起发送到服务器我是一名具有嵌入式背景的程序员，因此不了解HTTP调用，也是iPhone开发的新手。

如何实现这一点，任何示例代码或教程都将受到赞赏。

Answer 1

更好的方法是首先使用Image Compress Library Here压缩图像，然后使用网络库Liek AF Networking上传它，或者也可以使用NSUrlConnection发送它。 AFNetworking易于使用。您可以访问this page，了解如何将其导入到项目中。写下这些代码行。

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
[manager POST:@"http://samwize.com/api/poo/"
   parameters:@{@"color": @"green"}
   constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFileURL:filePath name:@"image" error:nil];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Success: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

Answer 2

从我的观点来看，最简单的方法是使用AFNetworking。

它将图像发送到php页面，然后在服务器上，您使用发送的数据构建并保存图像。

Here's一个基础教程，但很多其他人在互联网上。

Answer 3

为此，您可以使用ASIHTTPRequest

执行此类操作

NSURL *strUrl = [NSURL URLWithString:[NSString stringWithFormat:@"%@?action=youraction",serverUrl]];
ASIFormDataRequest *request;
request = [[[ASIFormDataRequest alloc] initWithURL:strUrl] autorelease];
[request setRequestMethod:@"POST"];
[request setTimeOutSeconds:120];

NSString *imagePAth = userImagePath;

NSArray *imageName = [userImagePath componentsSeparatedByString:@"/"];

if( userImagePath)
{
    [request setFile:imagePAth withFileName:[imageName lastObject] andContentType:@"image/jpeg"                   forKey:@"profileImage"];
}

[request setUseCookiePersistence:NO];
[request setUseSessionPersistence:NO];
[request setDelegate:self];

[request setDidFinishSelector:@selector(requestFinished:)];
[request setDidFailSelector:@selector(requestFailed:)];

[request startAsynchronous];

- (void)requestFinished:(ASIHTTPRequest *)request

{

}

- (void)requestFailed:(ASIHTTPRequest *)request
{

}

Answer 4

使用NSURLConnection，确保将图像转换为NSData user_id和key有参数。

NSURL *URL = [NSURL URLWithString:constFileUploadURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:URL];
[request setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[request setHTTPShouldHandleCookies:NO];
[request setTimeoutInterval:60];
[request setHTTPMethod:@"POST"];
NSString *boundary = @"0xLhTaLbOkNdArZ";

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", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"user_id\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
NSString *userid = [NSString stringWithFormat:@"%li",userID];
[body appendData:[userid dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];


[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"key\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[constBackendKey dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];

for (NSData *data in arrayWithFiles)
{
        [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"files%ld\"; filename=\"image%ld.jpg\"\r\n",[arrayWithFiles indexOfObject:data],[arrayWithFiles indexOfObject:data]] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[NSData dataWithData:data]];
        [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}

[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];

[request setHTTPBody:body];
_connection = [NSURLConnection connectionWithRequest:request delegate:self];

从IOS向服务器发送图像

4 个答案: