Tika图像提取示例

本文概述

• Tika ImageParser构造函数
• Tika ImageParser方法
• Tika图像解析器示例

Tika ImageParser是一个类, 用于从图像文件中提取内容和元数据。此类存储在org.apache.tika.parser.image包中。它包含构造函数和方法, 在此列出, 请参见下文。

Tika ImageParser构造函数

Tika ImageParser方法

以下是ImageParser类的方法。

Tika图像解析器示例

在此示例中, 我们提取图像文件的内容和metadat。参见示例。

package tikaexample;
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.jpeg.JpegParser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.SAXException;
public class ImageExample {
   public static void main(final String[] args) throws IOException, SAXException, TikaException {
      BodyContentHandler handler = new BodyContentHandler();
      Metadata metadata = new Metadata();
      FileInputStream inputstream = new FileInputStream(new File("srcmini.jpg"));
      ParseContext pcontext = new ParseContext();
      JpegParser  JpegParser = new JpegParser();
      JpegParser.parse(inputstream, handler, metadata, pcontext);
      System.out.println("Document Content :" + handler.toString());
      System.out.println("Document Metadata :");
      String[] metadataNames = metadata.names();
      for(String name : metadataNames) { 		        
         System.out.println(name + ": " + metadata.get(name));
      }
   }
}

输出

Document Content :
Document Metadata :
Exif Versi2on: 2.30
Brightness: 0
Compression Type: Baseline
Image Description: 
Number of Components: 3
Component 2: Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert
Focal Length: 4.1 mm
Component 1: Y component: Quantization table 0, Sampling factors 2 horiz/1 vert
Unknown tag (0x9410): [3656 values]
tiff:ResolutionUnit: Inch
Date/Time Original: 2015:06:11 20:53:00
tiff:Make: SONY
Unknown tag (0x201f): 0 0 0 0
Unknown tag (0x200d): 1
Flash Level: Normal
Component 3: Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert
Flash Exposure Compensation: 0 EV
Unknown tag (0xb046): 0
F-Number: f/3.5
Unknown tag (0x2015): 65535
Focus Mode: Manual
Sensitivity Type: Recommended Exposure Index
tiff:BitsPerSample: 8
Unknown tag (0x0002): 0x00000001
Unknown tag (0x2027): 4896 3672 4375 1897