问将node.js中的html文件转换为pdf，并将其写入磁盘

EN

NSURL *targetURL = [NSURL fileURLWithPath:HTMLPath];

self.PDFCreator = [NDHTMLtoPDF createPDFWithURL:targetURL
                                     pathForPDF:[[NSString stringWithFormat:@"~/Documents/Sample.pdf"] stringByExpandingTildeInPath]
                                       delegate:self
                                       pageSize:kPaperSizeA4
                                        margins:UIEdgeInsetsMake(20, 5, 90, 5)];

NSString *str_PDFName_path = [NSString stringWithFormat:@"~/Documents/Sample.pdf"];
self.PDFCreator = [NDHTMLtoPDF createPDFWithHTML:str_HTML pathForPDF:[str_PDFName_path stringByExpandingTildeInPath] delegate:self pageSize:kPaperSizeA4 margins:UIEdgeInsetsMake(20, 5, 90, 5)];