iOS - 关于上传手机本地图片到网页的问题

来源：互联网发布：淘宝11.11抢拍技巧编辑：程序博客网时间：2024/04/27 16:42

故事背景：我们可以获取到手机系统相册里面的图片，并且可以把它转化成UIImage *,至于本地图片，直接可以根据图片名字把它转化成UIImage * 类型的，其比较简单，在此不做说明。关键问题是，把这样的类型，如何上传到网页？也就是变成一个可以点开的链接。在此，我利用第三方AFNetworking上传。代码如下：

#import "AFNetworking.h"

@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate> {

UIImageView *_imageView; // 设置一个接受图片的控件

}

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

// 创建控件触发效果

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeSystem];

button.frame = CGRectMake(100,100, 100,100);

button.backgroundColor = [UIColorlightGrayColor];

[button setTitle:@"相册"forState:UIControlStateNormal];

[button addTarget:selfaction:@selector(buttonClick)forControlEvents:UIControlEventTouchUpInside];

[self.viewaddSubview:button];

UIImageView *imageView = [[UIImageViewalloc] init];

imageView.frame = CGRectMake(200,300, 200,200);

[self.viewaddSubview:imageView];

_imageView = imageView;

}

// 按钮点击事件

- (void)buttonClick {

// 1.判断是否可用

if (![UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {

return;

}

// 2. 创建图片选择控制器

UIImagePickerController *ipc = [[UIImagePickerControlleralloc] init];

// 3.设置打开照片相册类型(显示所有相簿)

ipc.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

ipc.delegate = self;

[self presentViewController:ipcanimated:YEScompletion:nil];

}

//获取图片后的操作

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {

// 设置图片

UIImage *image = info[UIImagePickerControllerOriginalImage];

_imageView.image = image;

// 销毁控制器

[picker dismissViewControllerAnimated:YEScompletion:nil];

//上传图片的方法

[selfuploadImageWithImage:image];

}

// 上传图片的方法

- (void)uploadImageWithImage:(UIImage *)image {

AFHTTPSessionManager *manager = [AFHTTPSessionManagermanager];

//上传图片时候用到的URLStr 这个是上传图片到网页用到的接口上的链接

NSString *imageUrlStr =@"http://58.51.146.24/jfinalbbs/file/upload_pic";

manager.responseSerializer.acceptableContentTypes = [NSSetsetWithObjects:@"text/html",@"application/json",nil];

[manager POST:imageUrlStrparameters:nilconstructingBodyWithBlock:^(id _Nonnull formData) {

NSData *imageData =UIImageJPEGRepresentation(image, 0.1);

NSDateFormatter *formatter = [[NSDateFormatteralloc] init];

formatter.dateFormat =@"yyyyMMddHHmmss";

NSString *str = [formatterstringFromDate:[NSDatedate]];

NSString *fileName = [NSStringstringWithFormat:@"%@.jpg", str];

///////////////////////////////////////// name就是我们要传的参数名字（file_upload）

[formData appendPartWithFileData:imageData name:@"file_upload"fileName:fileName mimeType:@"image/jpeg"];

} progress:^(NSProgress *_Nonnull uploadProgress) {

} success:^(NSURLSessionDataTask *_Nonnull task, id _Nullable responseObject) {

//NSLog(@"responseObject = %@, task = %@",responseObject,task);

// subUrl是服务器给我们返回的链接后面的一小部分

NSString *subUrl = responseObject[@"url"];

//最终转化成功的图片链接要在前面拼接上公司的信息，这个服务器人员说的算

NSString *needURL = [NSStringstringWithFormat:@"http://idongtian.com/jfinalbbs%@",subUrl];

//最后把这个转化成功的链接打印出来，复制到网页上面，是不是可以打开看到上传的图片了，有没有小兴奋呢

NSLog(@"%@",needURL);

} failure:^(NSURLSessionDataTask *_Nullable task, NSError *_Nonnull error) {

NSLog(@"error = %@",error);

}];

}

在此，一切完毕，OK，结束。。。

0 0