解决异常：Package should contain a content type part [M1.13]

http://blog.csdn.net/llwan/article/details/8890190

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public static Workbook create(InputStream in) throws

    IOException,InvalidFormatException {

        if (!in.markSupported()) {

            in = new PushbackInputStream(in, 8);

        }

        if (POIFSFileSystem.hasPOIFSHeader(in)) {

            return new HSSFWorkbook(in);

        }

        if (POIXMLDocument.hasOOXMLHeader(in)) {

            return new XSSFWorkbook(OPCPackage.open(in));

        }

        throw new IllegalArgumentException("你的excel版本目前poi解析不了");

    }

读写xls和xlsx格式时，HSSFWorkbook针对xls，XSSFWorkbook针对xlsx

巴特西

解决异常：Package should contain a content type part [M1.13]

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