Java的圖像魔術問題

Question

具體來說，我正在嘗試在Java上運行下一行：

 convert /home/mohamed.hegab/Desktop/1263392123111.jpg -gamma .45455 -resize 400x400 -gamma 2.2 -quality 92 /home/mohamed.hegab/Desktop/small.jpg

這在bash命令行上運行很好，但是當我使用流程生成器在java上運行它時，它給了我奇怪的結果。

public static void resizeImage(String srcPath, String destPath,String size) {

        ProcessBuilder pb = new ProcessBuilder("convert", srcPath , " -gamma", ".45455",
                " -resize",size, " -gamma ", "2.2", " -quality",
                "92" , destPath);
        pb.redirectErrorStream(true);
        InputStreamReader isr = null;
        BufferedReader br = null;
        try {
            Process p = pb.start();
            p.waitFor();
            isr = new InputStreamReader(p.getInputStream());
            br = new BufferedReader(isr);
            String line = null;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
        } catch (Exception e) {
            LOG.error("Exception while trying to convert text to image", e);
        } finally {
            try {
                if(isr != null) {
                    isr.close();
                }
                if(br != null) {
                    br.close();
                }
            } catch (IOException e) {
                LOG.error("Could not close stream", e);
            }
        }
    }

system.out中出現的行很奇怪，很奇怪，它說

---

轉換：無法打開圖像-gamma': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image -gamma': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image .45455'：無此類文件或目錄@ blob.c / OpenBlob / 2439。 convert：無法打開圖像-resize': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image -resize': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image 400x400'：沒有這樣的文件或目錄@ blob.c / OpenBlob / 2439。 轉換：無法打開圖像-gamma ': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image -gamma ': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image 2.2'：沒有此類文件或目錄@ blob.c / OpenBlob / 2439。 convert：無法打開圖像-quality': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image -quality': No such file or directory @ blob.c/OpenBlob/2439. convert: unable to open image 92'：沒有這樣的文件或目錄@ blob.c / OpenBlob / 2439。

---

但是圖像僅以960 * 960的尺寸顯示，我不知道它來自哪里。

所以任何人都可以在這方面幫助我:)

Answer 1

在-之前，請避免空格，shell命令只能識別以-開頭的選項。

Answer 2

答案在這里

http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/

簡而言之，我應該將命令切成數組並在沒有進程生成器的情況下正常運行