ios - 获取从 IOS 上“重写”的 url 下载的文件的名称

Question

我从重写的 url 下载 pdf 文件，所以我无法从 url 获取文件名。我怎么才能得到它 ？

我当前的代码：

    NSString *documentsDirectory = [NSHomeDirectory()
                                        stringByAppendingPathComponent:@"Documents"];
    NSString *filePath = [documentsDirectory stringByAppendingPathComponent:@"Document.pdf"];
     //url rewrited: downloadUrl = http://mySite/pdf/2020?pointer=451&Entity=4
    NSData *pdfData = [NSData dataWithContentsOfURL:downloadUrl];
    [pdfData writeToFile:filePath atomically:YES];

Answer 1

如果你使用NSURLConnection，你可以使用-[NSURLResponse suggestedFilename]来获取文件名。这将考虑到服务器在使用内容处置标头时发送的文件名。

Answer 2

试试这样：

-(BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{


 if (url != nil && [url isFileURL]) {
    DownloadedFileUrl =[NSString stringWithFormat:@"%@",url];
           DownloadedFileUrl = [DownloadedFileUrl stringByReplacingOccurrencesOfString:@"%20"  withString:@" "];
    DownloadedFileUrl = [DownloadedFileUrl stringByReplacingOccurrencesOfString:@"file://localhost"  withString:@""];
    NSLog(@"DownloadedFileUrl:%@",DownloadedFileUrl);
    NSString*str=[NSString stringWithFormat:@"%@",url];
    NSArray *sep = [str componentsSeparatedByString:@"/"];
    NSArray *sep1=  [[sep lastObject]  componentsSeparatedByString:@"."];
 FileNameStr1=[NSString stringWithFormat:@"%@",[sep1 objectAtIndex:0]];


NSLog(@"FileNameStr1:%@",FileNameStr1);
}}