测试Spring Boot中的javax.imageio无法找到阅读器

huangapple
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标题翻译

Test javax.imageIo within spring boot doesn't find reader

问题

  1. package com.apparence.enlaps.services.pictures;
  3. import com.apparence.enlaps.services.pictures.editor.BasicThumbPictureAdapter;
  4. import com.apparence.enlaps.services.pictures.editor.exceptions.ResizeException;
  5. import com.twelvemonkeys.image.ImageUtil;
  6. import com.twelvemonkeys.imageio.metadata.CompoundDirectory;
  7. import com.twelvemonkeys.imageio.metadata.exif.EXIFReader;
  8. import com.twelvemonkeys.imageio.metadata.jpeg.JPEG;
  9. import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegment;
  10. import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegmentUtil;
  11. import com.twelvemonkeys.imageio.metadata.tiff.TIFF;
  12. import com.twelvemonkeys.imageio.metadata.tiff.TIFFReader;
  13. import com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReaderSpi;
  14. import com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageWriterSpi;
  15. import com.twelvemonkeys.imageio.plugins.tiff.TIFFImageReaderSpi;
  16. import com.twelvemonkeys.imageio.plugins.tiff.TIFFImageWriterSpi;
  17. import org.junit.Before;
  18. import org.junit.Test;
  19. import org.junit.runner.RunWith;
  20. import org.springframework.boot.SpringApplication;
  21. import org.springframework.boot.test.context.SpringBootContextLoader;
  22. import org.springframework.boot.test.context.SpringBootTest;
  23. import org.springframework.core.io.ClassPathResource;
  24. import org.springframework.core.io.Resource;
  25. import org.springframework.test.annotation.DirtiesContext;
  26. import org.springframework.test.context.ActiveProfiles;
  27. import org.springframework.test.context.junit4.SpringRunner;
  28. import org.junit.Assert;
  30. import javax.imageio.ImageIO;
  31. import javax.imageio.ImageReadParam;
  32. import javax.imageio.ImageReader;
  33. import javax.imageio.spi.IIORegistry;
  34. import javax.imageio.stream.ImageInputStream;
  35. import javax.imageio.stream.MemoryCacheImageInputStream;
  36. import java.io.ByteArrayInputStream;
  37. import java.io.IOException;
  38. import java.io.InputStream;
  39. import java.util.*;
  41. @RunWith(SpringRunner.class)
  42. @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
  43. @ActiveProfiles("test")
  44. @DirtiesContext
  45. public class PictureEditorTest {
  47.     BasicThumbPictureAdapter adapter = new BasicThumbPictureAdapter();
  49.     @Before
  50.     public void init() {
  51.         ImageIO.scanForPlugins();
  52.         IIORegistry registry = IIORegistry.getDefaultInstance();
  53.         registry.registerApplicationClasspathSpis();
  54.     }
  56.     @Test
  57.     public void resizeJpgTest() throws IOException, ResizeException {
  58.         Resource resource = new ClassPathResource("img/test2.jpg");
  59.         Assert.assertNotNull("image to check resize exists", resource);
  60.         Assert.assertTrue("image to check resize exists", resource.exists());
  61.         Assert.assertTrue("image to check resize exists", resource.getFile().exists());
  62.         var is = resource.getInputStream();
  63.         Assert.assertTrue("image to check resize exists", is.available() > 0);
  64.         CompoundDirectory sourceExif = getExifData(is);
  65.         Assert.assertNotNull("Source exif have been read", sourceExif);
  66.         var result = adapter.resize(is, 800);
  67.         try (var resultIs = new ByteArrayInputStream(result)) {
  68.             ImageInputStream imageIs = ImageIO.createImageInputStream(resultIs);
  69.             Iterator<ImageReader> readers = ImageIO.getImageReaders(imageIs);
  70.             if (!readers.hasNext()) {
  71.                 throw new IllegalArgumentException("No reader found");
  72.             }
  73.             ImageReader reader = readers.next();
  74.             reader.setInput(imageIs);
  75.             Assert.assertEquals("JPEG", reader.getFormatName());
  76.             CompoundDirectory exif = getExifData(resultIs);
  77.             Assert.assertNotNull(exif);
  78.             Assert.assertTrue("width should be <= 800 now", reader.getWidth(0) <= 800);
  79.             Assert.assertTrue("height should be <= 800 now", reader.getHeight(0) <= 800);
  80.             Assert.assertEquals("Orientation has not changed", 5, exif.getEntryByFieldName("orientation").getValue());
  81.         } catch (Exception e) {
  82.             throw new RuntimeException("error while reading result", e);
  83.         }
  84.     }
  86.     private CompoundDirectory getExifData(InputStream resultIs) throws IOException {
  87.         List<JPEGSegment> exifSegment = JPEGSegmentUtil.readSegments(ImageIO.createImageInputStream(resultIs), JPEG.APP1, "Exif");
  88.         if (!exifSegment.isEmpty()) {
  89.             InputStream exifData = exifSegment.get(0).data();
  90.             exifData.read(); // Skip 0-pad for Exif in JFIF
  91.             try (ImageInputStream exifStream = ImageIO.createImageInputStream(exifData)) {
  92.                 return (CompoundDirectory) new TIFFReader().read(exifStream);
  93.             }
  94.         }
  95.         return null;
  96.     }
  97. }
英文翻译

currently I would like this test to work within my spring boot. This is a simple unit test on a resizing image function using imageIo, it checks that the resize didn't touch any of the exif data and made a smaller image as requested.
This function work when running the server but fails in unit test on the same image.

saying this :

  1. No reader found
  2. java.lang.IllegalArgumentException: No reader found
  3. 	at com.apparence.enlaps.services.pictures.editor.BasicThumbPictureAdapter.resize(BasicThumbPictureAdapter.java:39)
  4. 	at com.apparence.enlaps.services.pictures.PictureEditorTest.resizeJpgTest(PictureEditorTest.java:70)
  5. 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  6. 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  7. 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  8. 	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
  9. 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
  10. 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

The unit test code is this. How can I make it pass, I believe it's a matter of context no loading all reader methods properly on a unit test context. But my attempt to force loading them seems not working too. I'm out of solutions.

  1. package com.apparence.enlaps.services.pictures;
  3. import com.apparence.enlaps.services.pictures.editor.BasicThumbPictureAdapter;
  4. import com.apparence.enlaps.services.pictures.editor.exceptions.ResizeException;
  5. import com.twelvemonkeys.image.ImageUtil;
  6. import com.twelvemonkeys.imageio.metadata.CompoundDirectory;
  7. import com.twelvemonkeys.imageio.metadata.exif.EXIFReader;
  8. import com.twelvemonkeys.imageio.metadata.jpeg.JPEG;
  9. import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegment;
  10. import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegmentUtil;
  11. import com.twelvemonkeys.imageio.metadata.tiff.TIFF;
  12. import com.twelvemonkeys.imageio.metadata.tiff.TIFFReader;
  13. import com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReaderSpi;
  14. import com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageWriterSpi;
  15. import com.twelvemonkeys.imageio.plugins.tiff.TIFFImageReaderSpi;
  16. import com.twelvemonkeys.imageio.plugins.tiff.TIFFImageWriterSpi;
  17. import org.junit.Before;
  18. import org.junit.Test;
  19. import org.junit.runner.RunWith;
  20. import org.springframework.boot.SpringApplication;
  21. import org.springframework.boot.test.context.SpringBootContextLoader;
  22. import org.springframework.boot.test.context.SpringBootTest;
  23. import org.springframework.core.io.ClassPathResource;
  24. import org.springframework.core.io.Resource;
  25. import org.springframework.test.annotation.DirtiesContext;
  26. import org.springframework.test.context.ActiveProfiles;
  27. import org.springframework.test.context.junit4.SpringRunner;
  28. import org.junit.Assert;
  30. import javax.imageio.ImageIO;
  31. import javax.imageio.ImageReadParam;
  32. import javax.imageio.ImageReader;
  33. import javax.imageio.spi.IIORegistry;
  34. import javax.imageio.stream.ImageInputStream;
  35. import javax.imageio.stream.MemoryCacheImageInputStream;
  36. import java.io.ByteArrayInputStream;
  37. import java.io.IOException;
  38. import java.io.InputStream;
  39. import java.util.*;
  42. @RunWith(SpringRunner.class)
  43. @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
  44. @ActiveProfiles(&quot;test&quot;)
  45. @DirtiesContext
  46. public class PictureEditorTest {
  48.     BasicThumbPictureAdapter adapter = new BasicThumbPictureAdapter();
  50.     @Before
  51.     public void init() {
  52.         ImageIO.scanForPlugins();
  53.         IIORegistry registry = IIORegistry.getDefaultInstance();
  54.         registry.registerApplicationClasspathSpis();
  55.     }
  57.     // BROKEN test cauz of https://stackoverflow.com/questions/49270343/imageio-unsupported-image-type-twelvemonkeys-plugin-with-fix-not-working
  58.     // IMAGEIO drivers not loaded in test context
  59.     @Test
  60.     public void resizeJpgTest() throws IOException, ResizeException {
  61.         Resource resource = new ClassPathResource(&quot;img/test2.jpg&quot;);
  62.         Assert.assertNotNull(&quot;image to check resize exists&quot;, resource);
  63.         Assert.assertTrue(&quot;image to check resize exists&quot;, resource.exists());
  64.         Assert.assertTrue(&quot;image to check resize exists&quot;, resource.getFile().exists());
  65.         var is = resource.getInputStream();
  66.         Assert.assertTrue(&quot;image to check resize exists&quot;, is.available() &gt; 0);
  67.         CompoundDirectory sourceExif = getExifData(is);
  68.         Assert.assertNotNull(&quot;Source exif have been read&quot;, sourceExif);
  69.         // call resize
  70.         var result = adapter.resize(is, 800);
  71.         // check results
  72.         try (var resultIs = new ByteArrayInputStream(result)) {
  73.             ImageInputStream imageIs = ImageIO.createImageInputStream(resultIs);
  74.             Iterator&lt;ImageReader&gt; readers = ImageIO.getImageReaders(imageIs);
  75.             if (!readers.hasNext()) {
  76.                 throw new IllegalArgumentException(&quot;No reader found&quot;);
  77.             }
  78.             ImageReader reader = readers.next();
  79.             reader.setInput(imageIs);
  80.             Assert.assertEquals(&quot;JPEG&quot;, reader.getFormatName());
  81.             CompoundDirectory exif = getExifData(resultIs);
  82.             Assert.assertNotNull(exif);
  83.             Assert.assertTrue(&quot;width should be &lt;= 800 now&quot;, reader.getWidth(0) &lt;= 800);
  84.             Assert.assertTrue(&quot;height should be &lt;= 800 now&quot;, reader.getHeight(0) &lt;= 800);
  85.             Assert.assertEquals(&quot;Orientation has not changed&quot;, 5, exif.getEntryByFieldName(&quot;orientation&quot;).getValue());
  86.         } catch (Exception e) {
  87.             throw new RuntimeException(&quot;error while reading result&quot;, e);
  88.         }
  89.     }
  91.     private CompoundDirectory getExifData(InputStream resultIs) throws IOException {
  92.         List&lt;JPEGSegment&gt; exifSegment = JPEGSegmentUtil.readSegments(ImageIO.createImageInputStream(resultIs), JPEG.APP1, &quot;Exif&quot;);
  93.         if (!exifSegment.isEmpty()) {
  94.             InputStream exifData = exifSegment.get(0).data();
  95.             exifData.read(); // Skip 0-pad for Exif in JFIF
  96.             try (ImageInputStream exifStream = ImageIO.createImageInputStream(exifData)) {
  97.                 return (CompoundDirectory) new TIFFReader().read(exifStream);
  98.             }
  99.         }
  100.         return null;
  101.     }
  102. }

huangapple
  • 本文由 发表于 2020年5月30日 16:26:18
  • 转载请务必保留本文链接：https://java.coder-hub.com/62099800.html
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