iOS上传图像到服务器,以及服务器PHP接收的几种方法
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2022-05-24 19:50:59
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1. 将图片转换为Base64编码,POST上传。PHP将Base64解码为二进制,再写出文件。缺点:不能上传较大的图片
// iOS(Swift)func upload(image: UIImage, url: String) { let imageData = UIImageJPEGRepresentation(image, 0.3) // 将图片转换成jpeg格式的NSData,压缩到0.3 let imageStr = imageData?.base64EncodedStringWithOptions(.Encoding64CharacterLineLength) // 将图片转换为base64字符串 let params: NSDictionary = ["file": imageStr!] let manager = AFHTTPRequestOperationManager() // 采用POST的方式上传,因为POST对长度没有限制 manager.POST(url, parameters: params, success: { (_: AFHTTPRequestOperation!, response: AnyObject!) in // 成功 }) { (_: AFHTTPRequestOperation!, _: NSError!) in // 失败 }}
2.AFNetworking上传,PHP端通过正常接收网页上传方法来接收图片
static func uploadPortrait(image: UIImage, url: String) { let manager = AFHTTPRequestOperationManager() // fromData: AFN封装好的http header类,可以添加请求体 manager.POST(url, parameters: [:], constructingBodyWithBlock: { (fromData: AFMultipartFormData!) in let pngData = UIImagePNGRepresentation(image) // name必须和后台PHP接收的参数名相同($_FILES["file"]) // fileName为图片名 fromData.appendPartWithFileData(pngData, name: "file", fileName: "image.png", mimeType: "image/png") // let jpegData = UIImageJPEGRepresentation(image, 0.3) // fromData.appendPartWithFileData(jpegData, name: "file", fileName: "image.jpg", mimeType: "image/jpeg") }, success: { (operation: AFHTTPRequestOperation!, response: AnyObject!) in // 成功 }) { (operation: AFHTTPRequestOperation!, error: NSError!) in // 失败 } }
0) { echo $_FILES["file"]["error"]; // 错误代码 } else { $fillname = $_FILES['file']['name']; // 得到文件全名 $dotArray = explode('.', $fillname); // 以.分割字符串,得到数组 $type = end($dotArray); // 得到最后一个元素:文件后缀 $path = "../portrait/".md5(uniqid(rand())).'.'.$type; // 产生随机唯一的名字 move_uploaded_file( // 从临时目录复制到目标目录 $_FILES["file"]["tmp_name"], // 存储在服务器的文件的临时副本的名称 $path); echo "成功"; } } else { echo "文件类型不正确";}?>
3.将图片封装在Http的请求报文中的请求体(body)中上传。也是AFN上传的原理
// 使用OC封装#import@interface RequestPostUploadHelper : NSObject+ (NSMutableURLRequest *)uploadImage:(NSString*)url uploadImage:(UIImage *)uploadImage params:(NSMutableDictionary *)params;@end#import "RequestPostUploadHelper.h"@implementation RequestPostUploadHelper+ (NSMutableURLRequest *)uploadImage:(NSString*)url uploadImage:(UIImage *)uploadImage params:(NSMutableDictionary *)params { [params setObject:uploadImage forKey:@"file"]; //分界线的标识符 NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x"; //根据url初始化request NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:10]; //分界线 --AaB03x NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY]; //结束符 AaB03x-- NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary]; //要上传的图片 UIImage *image=[params objectForKey:@"file"]; //得到图片的data NSData* data = UIImagePNGRepresentation(image); //http body的字符串 NSMutableString *body=[[NSMutableString alloc]init]; //参数的集合的所有key的集合 NSArray *keys= [params allKeys]; //遍历keys for(int i = 0; i // 使用// Swiftstatic func uploadPortrait(image: UIImage, url:String) { // 使用 let request = RequestPostUploadHelper.uploadImage(url, uploadImage: image, params: [:]) // 异步网络请求 NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue()) { (response: NSURLResponse?, data: NSData?, error: NSError?) in if error != nil { // 失败 } else { // 成功 } }}4.iOS图片转换为NSData,通过POST上传。PHP接收POST参数,将NSData的16进制编码转换为PHP支持的二进制,再写出文件保存
暂时没有找到办法,PHP接收到16进制编码后,使用算法转换为二进制后无法输出图片
5.二进制POST上传。PHP直接将数据保存为图片
暂时没有找到办法,iOS端使用NSData的getBytes无法转换为二进制