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實際上,我正在使用JAVA分割600x700 .jpg文件。這裏該方法的參數寬度和高度與圖像寬度和高度完全相同。但是在執行期間,我得到了與堆內存有關的異常。使用java分割圖像
/*
* this method will split the secureImage file
*/
private BufferedImage[] getsecureFragments(int width, int height,
File secureFile)throws IOException {
FileInputStream secureFileStream = new FileInputStream(secureFile);
BufferedImage secureimage = ImageIO.read(secureFileStream);
int rows = width;
int columns = height;
int chunks = rows *columns;
int chunkWidth = width/width;
int chunkHeight=height/height;
int count = 0;
BufferedImage fragmentImgs[] = new BufferedImage[chunks];
System.out.println(fragmentImgs.length);
for (int x = 0; x < rows; x++) {
for (int y = 0; y < columns; y++) {
//Initialize the image array with image chunks
fragmentImgs[count] = new BufferedImage(chunkWidth, chunkHeight, secureimage.getType());
// draws the image chunk
Graphics2D grSecure = fragmentImgs[count++].createGraphics();
grSecure.drawImage(secureimage, 0, 0, chunkWidth, chunkHeight, chunkWidth * y, chunkHeight * x, chunkWidth * y + chunkWidth, chunkHeight * x + chunkHeight, null);
grSecure.dispose();
}
}
System.out.println("Splitting done");
//writing mini images into image files for test purpose
for (int i = 0; i < fragmentImgs.length; i++) {
ImageIO.write(fragmentImgs[i], "jpg", new File("F://uploads//fragmentImgs" + i + ".jpg"));
}
System.out.println("Mini images created");
return fragmentImgs;
}//end of method getsecureFragments
異常在線程 「HTTP-BIO-8080-EXEC-9」 java.lang.OutOfMemoryError:Java堆空間
這是因爲我的邏輯缺乏?或者我是否需要了解有關JAVA堆內存的更多信息。
你能發佈錯誤的堆棧跟蹤嗎? –
是的,我得到了錯誤。謝謝 –
你在內存中同時打開了420 * 000 *圖像......我並不感到驚訝,它的內存不足。另外,請看['BufferedImage.getSubimage'](https://docs.oracle.com/javase/8/docs/api/java/awt/image/BufferedImage.html#getSubimage-int-int-int- int-) - 也許有用。 – Boann