AFNetworking 多文件上传

Posted 2023-02-23

【中文标题】AFNetworking 多文件上传

【英文标题】：AFNetworking multiple files upload

【发布时间】：2013-08-28 08:17:40

【问题描述】：

我想将一些图像上传到服务器，所以我使用 AFNetWork 发布文件。 代码在这里：

UIImage *image1 = [UIImage imageNamed:@"about_app"];
UIImage *image2 = [UIImage imageNamed:@"alter"];
NSArray *array = @[image1,image2];
__block int i = 0;
NSMutableURLRequest *request = [[AFNetWorkSingleton shareInstance] multipartFormRequestWithMethod:@"POST" path:@"Mindex/getimg" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>formData)
for(UIImage *eachImage in array)

    NSData *imageData = UIImageJPEGRepresentation(eachImage,0.5);
    [formData appendPartWithFileData:imageData name:[NSString stringWithFormat:@"file%d",i ] fileName:[NSString stringWithFormat:@"abc%d.jpg",i ] mimeType:@"image/jpeg"];
    i++;

];

AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject).....

这不行！ 但是当我使用下面的代码替换 multipartFormRequestWithMethod 方法中的“for”语句时，一切正常！但是如果我无法确认图像数组的计数，我必须使用“for”语句，我的代码有问题吗？

 [formData appendPartWithFileData:UIImageJPEGRepresentation([array objectAtIndex:0], 0.5) name:@"image1" fileName:@"image1.jpg" mimeType:@"image/jpeg"];
 [formData appendPartWithFileData:UIImageJPEGRepresentation([array objectAtIndex:1], 0.5) name:@"image2" fileName:@"image2.jpg" mimeType:@"image/jpeg"];

【参考方案1】：

将变量i 放入块中。还将文件名从abc 更改为file。

UIImage *image1 = [UIImage imageNamed:@"about_app"];
UIImage *image2 = [UIImage imageNamed:@"alter"];
NSArray *array = @[image1,image2];

NSMutableURLRequest *request = [[AFNetWorkSingleton shareInstance] multipartFormRequestWithMethod:@"POST" path:@"Mindex/getimg" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>formData)
int i = 0;
for(UIImage *eachImage in array)

    NSData *imageData = UIImageJPEGRepresentation(eachImage,0.5);
    [formData appendPartWithFileData:imageData name:[NSString stringWithFormat:@"file%d",i ] fileName:[NSString stringWithFormat:@"file%d.jpg",i ] mimeType:@"image/jpeg"];
    i++;

];

【参考方案2】：

只需更改 for 循环语法

 UIImage *image1 = [UIImage imageNamed:@"about_app"];
    UIImage *image2 = [UIImage imageNamed:@"alter"];
    NSArray *array = @[image1,image2];

    NSMutableURLRequest *request = [[AFNetWorkSingleton shareInstance] multipartFormRequestWithMethod:@"POST" path:@"Mindex/getimg" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>formData)
    for(int i=0;i<[array count];i++)
    
        UIImage *eachImage  = [array objectAtIndex:i];
        NSData *imageData = UIImageJPEGRepresentation(eachImage,0.5);
        [formData appendPartWithFileData:imageData name:[NSString stringWithFormat:@"file%d",i ] fileName:[NSString stringWithFormat:@"abc%d.jpg",i ] mimeType:@"image/jpeg"];
    
    ];

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject).....

【讨论】：

如果我想要一个 name 可以包含多个文件？

【参考方案3】：

要上传任何类型的文件到服务器，设置 mimeType 为--> file/*

  [formData appendPartWithFileData:Data  
                           name:@"keyName" 
                           fileName:@"yourFileName"    
                           mimeType:@"file/*"];

【讨论】：

你回答的不是我问的。