Tika

1.解析图片

@Test
    public void test1Image() throws IOException, SAXException, TikaException{
        String filePath = "src/main/resources/baby.jpg";
         //检测文件类型
          BodyContentHandler handler = new BodyContentHandler();
          Metadata metadata = new Metadata();
          FileInputStream inputstream = new FileInputStream(new File(filePath));
          ParseContext pcontext = new ParseContext();          //Jpeg Parse
          JpegParser  JpegParser = new JpegParser();
          JpegParser.parse(inputstream, handler, metadata,pcontext);
          System.out.println("文档内容:" + handler.toString());
          System.out.println("文档元数据:");
          String[] metadataNames = metadata.names();          for(String name : metadataNames) {
             System.out.println(name + ": " + metadata.get(name));
          }
    }

结果：

文档内容:
文档元数据:
Number of Components: 3
Flags 0: 192
Image Height: 466 pixels
Data Precision: 8 bits
tiff:BitsPerSample: 8
Compression Type: Baseline
Flags 1: 0
Component 1: Y component: Quantization table 0, Sampling factors 1 horiz/1 vert
Component 2: Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert
tiff:ImageLength: 466
Component 3: Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert
DCT Encode Version: 1
Color Transform: YCbCr
tiff:ImageWidth: 444
Image Width: 444 pixels

参考文档:tika