生成.xls文件并在UIWebview iOS中打开时出错

Question

我使用这段代码生成了一个.xls文件，并将其保存在文档directry中。

NSMutableString *excel = [[NSMutableString alloc] init];

    //Excel sheet header
    [excel appendString:@"<?xml version=\"1.0\"?>\n<?mso-application progid=\"Excel.Sheet\"?>\n<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:o=\"urn:schemas-microsoft-com:office:office\" "];
    [excel appendString:@"xmlns:x=\"urn:schemas-microsoft-com:office:excel\" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\" xmlns:html=\"http://www.w3.org/TR/REC-html40\">\n<DocumentProperties xmlns=\"urn:schemas-microsoft-com:office:office\">"];
    [excel appendString:@"<LastAuthor>Kuzora</LastAuthor>"];
    [excel appendString:[NSString stringWithFormat:@"<Created>%@</Created>",[NSDate date]]];
    [excel appendString:@"<Version>11.5606</Version>\n</DocumentProperties>\n<ExcelWorkbook xmlns=\"urn:schemas-microsoft-com:office:excel\">\n<WindowHeight>6690</WindowHeight>\n<WindowWidth>14355</WindowWidth>"];
    [excel appendString:@"<WindowTopX>360</WindowTopX>\n<WindowTopY>75</WindowTopY>\n<ProtectStructure>False</ProtectStructure>\n<ProtectWindows>False</ProtectWindows>\n</ExcelWorkbook>\n<Styles>"];
    [excel appendString:@"<Style ss:ID=\"Default\" ss:Name=\"Normal\">\n<Alignment ss:Vertical=\"Bottom\"/>\n<Borders/>\n<Font/>\n<Interior/>\n<NumberFormat/>\n<Protection/>\n</Style>"];
    [excel appendString:@"<Style ss:ID=\"s21\">\n<NumberFormat ss:Format=\"Medium Date\"/>\n</Style><Style ss:ID=\"s22\">\n<NumberFormat ss:Format=\"Short Date\"/>\n</Style></Styles>"];

    //Excel sheet content
    [excel appendString:@"<Worksheet ss:Name=\"User\">"];
    [excel appendString:@"<Table ss:ExpandedColumnCount=\"4\" ss:ExpandedRowCount=\"1\" x:FullColumns=\"1\" x:FullRows=\"1\">"];
    [excel appendString:@"<Row>"];
    [excel appendString:@"<Cell><Data ss:Type=\"String\">TraineeDetailID</Data></Cell>"];
    [excel appendString:@"<Cell><Data ss:Type=\"String\">Name</Data></Cell>"];
    [excel appendString:@"<Cell><Data ss:Type=\"String\">DOB</Data></Cell>"];
    [excel appendString:@"<Cell><Data ss:Type=\"String\">HeightFeet</Data></Cell>"];
    [excel appendString:@"</Row>"];
    [excel appendString:@"</Table>"];
    [excel appendString:@"</Worksheet>"];
    [excel appendString:@"</Workbook>"];

    filePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent:@"somename.xls"];
    data = [excel dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:FALSE];
    if(![data writeToFile:filePath atomically:YES])
        return;

.xls文件

当我试图在UIWebView中打开它时，它给出了一个错误“读取文档时出错”。但.xls文件已成功创建。我需要知道为什么webview无法打开文件。我尝试在webview中打开其他一些.xls文件，但它取得了成功。为什么不能打开我创建的.xls文件？任何建议。

Answer 1

您可以尝试使用此代码加载生成的Excel：

 NSString *resourceDBFolderPath;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSError *error1;
    NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory,
                                                         NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *documentDBFolderPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"somename.xls"]];
    BOOL success = [fileManager fileExistsAtPath:documentDBFolderPath];

    NSURL *url = [NSURL fileURLWithPath: documentDBFolderPath];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
if(success)
    [webView loadRequest:request];

请告诉我此代码是否可以帮助您。