如何使用java從ODF檔案中提取內容？

在Java程式設計中，如何使用java從ODF檔案中提取內容？？

專案的目錄結構如下 -

Tika的工具包可從以下網址下載：http://tika.apache.org/download.html ，只下載：tika-app-1.16.jar 和 tika-server-1.16.jar 。

以下是使用java從ODF檔案中提取內容的程式 -

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.odf.OpenDocumentParser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.SAXException;

public class ExtractContentFromODF {
   public static void main(String[] args) throws Exception {

      //detecting the file type
      BodyContentHandler handler = new BodyContentHandler();

      Metadata metadata = new Metadata();
      FileInputStream inputstream = new FileInputStream(new File(
         "demODF.odt"));
      ParseContext pcontext = new ParseContext();

      //Open Document Parser
      OpenDocumentParser openofficeparser = new OpenDocumentParser ();

      openofficeparser.parse(inputstream, handler, metadata,pcontext);
      System.out.println("Contents of the document:" + handler.toString());
      System.out.println("Metadata of the document:");
      String[] metadataNames = metadata.names();

      for(String name : metadataNames) {
         System.out.println(name + " :  " + metadata.get(name));
      }
   }
}

原ODF檔案：demODF.odt 的內容如下 -

執行上面範例程式碼，得到以下結果 -

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/F:/worksp/javaexamples/libs/tika_libs/tika-app-1.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/F:/worksp/javaexamples/libs/tika_libs/tika-server-1.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
九月 27, 2017 4:59:52 上午 org.apache.tika.config.InitializableProblemHandler$3 handleInitializableProblem
警告: JBIG2ImageReader not loaded. jbig2 files will be ignored
See http://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
for optional dependencies.
TIFFImageWriter not loaded. tiff files will not be processed
See http://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
for optional dependencies.
J2KImageReader not loaded. JPEG2000 files will not be processed.
See http://pdfbox.apache.org/2.0/dependencies.html#jai-image-io
for optional dependencies.

九月 27, 2017 4:59:52 上午 org.apache.tika.config.InitializableProblemHandler$3 handleInitializableProblem
警告: org.xerial's sqlite-jdbc is not loaded.
Please provide the jar on your classpath to parse sqlite files.
See tika-parsers/pom.xml for the correct version.
Contents of the document:
Apache Tika is a library that is used for document type detection and content extraction from various file formats.
Internally, Tika uses various existing document parsers and document type detection techniques to detect and extract data.
Using Tika, one can develop a universal type detector and content extractor to extract both structured text as well as metadata from different types of documents such as spreadsheets, text documents, images, PDFs and even multimedia input formats to a certain extent.


Metadata of the document:
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