图像在java中调整大小

Question

我使用以下代码调整图像大小并将其存储在临时文件中

public File resizeImage(InputStream fileInputStream, String fileName, int newW,int newH) throws Exception {
        Graphics2D g = null;
        File file2= File.createTempFile("result",FilenameUtils.getExtension(fileName));

        BufferedImage img = null;
        File tempFile1 = File.createTempFile("Temp1File",FilenameUtils.getExtension(fileName)); // If not resizing send temp file1
        FileOutputStream outputStream = null;
        try{            
            outputStream = new FileOutputStream(tempFile1);
            int read = 0;
            byte[] bytes = new byte[1024];
            while ((read = fileInputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, read);
            }
            outputStream.close();
            outputStream = null;            
            img = ImageIO.read(new FileInputStream(tempFile1));
            int w = img.getWidth();  
            int h = img.getHeight();  
            BufferedImage dimg = new BufferedImage(newW, newH, img.getType());  
            g = dimg.createGraphics();  
            g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);  
            g.drawImage(img, 0, 0, newW, newH, 0, 0, w, h, null);
            ImageIO.write(dimg, FilenameUtils.getExtension(fileName), file2);
        } catch(SocketException e) {
            e.printStackTrace();
            throw e;
        } catch(Exception e) {
            e.printStackTrace();
            throw e;
        } finally {
            if(outputStream != null) 
                outputStream.close();
            if(fileInputStream != null) 
                fileInputStream.close();
            if(g != null)
                g.dispose();
            if(img != null) 
                img.flush();
        }
        return file2;
        }

当我在突出显示的行中读取tempFile1时，我会遇到异常 套接字例外：套接字已经关闭。 任何人都可以帮助我

Answer 1

您可以将imgscalr用于此目的！