用AFNetworking上传图片

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//第一种方法是通过工程中的文件进行上传
- (void)upLoad1{

    //1。创建管理者对象
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    //2.上传文件
    NSDictionary *dict = @{@"username":@"1234"};
   //3.请求的url
    NSString *urlString = @"22222";
    [manager POST:urlString parameters:dict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        //上传文件参数
        UIImage *iamge = [UIImage imageNamed:@"123.png"];
        NSData *data = UIImagePNGRepresentation(iamge);
        //这个就是参数
        [formData appendPartWithFileData:data name:@"file" fileName:@"123.png" mimeType:@"image/png"];

    } progress:^(NSProgress * _Nonnull uploadProgress) {

        //打印下上传进度
        WKNSLog(@"%lf",1.0 *uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        //请求成功
        WKNSLog(@"请求成功：%@",responseObject);

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

        //请求失败
        WKNSLog(@"请求失败：%@",error);
    }];

}

用AFNetworking上传图片

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原文地址：http://www.cnblogs.com/lijielijie/p/5534891.html