Java: 操作保存在 Clob/Blob 中的 docx 文档作为文本

Question

我在 Oracle Clob 或 mysql Blob 中保存了一个 word 文档我编写了以下代码以从 DB 中读取 --> 保存到 .docx --> 操作 docx 文档中的文本。我的问题是有什么方法可以在不将数据写入 docx 文档的情况下操作 docx 文档中的文本？谢谢:)

private static String url = "jdbc:mysql://localhost/test";
private static String username = "root";
private static String password = "root";




public static void main( String[] args) throws ClassNotFoundException, SQLException, IOException
{
     Connection conn = null;

      Class.forName("com.mysql.jdbc.Driver");
      conn = DriverManager.getConnection(url, username, password);

      String sql = "SELECT name, description, data FROM documents ";
      PreparedStatement stmt = conn.prepareStatement(sql);
      ResultSet resultSet = stmt.executeQuery();
      while (resultSet.next()) {
          String name = resultSet.getString(1);
          System.out.println("Name        = " + name);
          String description = resultSet.getString(2);
          System.out.println("Description = " + description);

          //
          // Get the character stream of our CLOB data
          //
          Blob blob = resultSet.getBlob(3);
         // System.out.println(convertLOB(blob));//convertLOB(blob).toString());
          OutputStream fwriter = new FileOutputStream("C:\The Appfuce Primer.docx");
         readFromBlob(blob,fwriter);

    String target = "C:\The Appfuce Primer.docx";

    File document = new File(target);
    Parser parser = new AutoDetectParser();

    ContentHandler handler = new BodyContentHandler();
    Metadata metadata = new Metadata();

    try {
      parser.parse(new FileInputStream(document), handler, metadata, new ParseContext());


    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    } catch (SAXException e) {
      e.printStackTrace();
    } catch (TikaException e) {
      e.printStackTrace();
    }

    System.out.println(metadata);
    System.out.println(handler.toString());
      }
}
      final static int bBufLen = 4 * 8192;
      public static long readFromBlob(Blob blob, OutputStream out)
               throws SQLException, IOException {
                 InputStream in = blob.getBinaryStream();
                 int length = -1;
                 long read = 0;
                 byte[] buf = new byte[bBufLen];
                 while ((length = in.read(buf)) != -1) {
                     out.write(buf, 0, length);
                     read += length;
                 }
                 in.close();
                 return read;
             }

Answer 1

也许您可以直接使用 blob.getBinaryStream():

调用 parser.parse

...
parser.parse(blob.getBinaryStream(), handler, metadata, new ParseContext());
...

因此您不必创建包含 docx 文档的临时文件。

Answer 2

您可以使用 Apache POI 项目来访问您的 .docx 文档的内容。

https://poi.apache.org/document/quick-guide-xwpf.html

Java: 操作保存在 Clob/Blob 中的 docx 文档作为文本

Java: Manipulate docx document saved in Clob/Blob as text

java

mysql

jdbc

apache-tika