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Question

我收到错误：＆＃34;构造函数Document（ByteArrayInputStream）未定义＆＃34;

以下代码段：

public static Document readfromDB(String filename) throws Exception
{

    String sql = SELECT * FROM File where FileName = '"filename +"'";
    ResultSet rs = executeQuery(sql);
    if (!rs.isBeforeFirst())
        throw new IllegalArgumentException (MessageFormat.format("No record found"));
    rs.next
    byte[] buffer = resultset.getbytes("FileContent");
    ByteArrayInputStream newStream- new ByteArrayInputStream(buffer);
    Document doc = new Document(newStream);
    return doc;
}