Question

我编写了一个执行imagemagic转换命令的类。

public class ImageMagicDemo {

public static void main(String[] argp){


    ProcessBuilder pb2 = new ProcessBuilder("G:\\project\\installation\\imagemagic\\convert","G:\\demo\\image\\frame.jpg", "-resize", "20x20",
            "G:\\demo\\image\\resizeImage\\frame1.jpg");
    pb2.redirectErrorStream(true);

    Process p2;
    try {
        p2 = pb2.start();
         BufferedReader br = new BufferedReader(new InputStreamReader(p2.getInputStream()));
            String line = null;
            while((line=br.readLine())!=null){
                System.out.println(line);
            }
            System.out.println("2"+p2.waitFor());

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

}

但我得到以下回复

convert.exe: unable to open image `G:\demo\image\frame.jpg': No such file or directory @ error/blob.c/OpenBlob/2692.
convert.exe: unable to load module `G:\project\installation\imagemagic\modules\coders\IM_MOD_RL_JPEG_.dll': The specified module could not be found.
@ error/module.c/OpenModule/1282.
convert.exe: no decode delegate for this image format `JPG' @ error/constitute.c/ReadImage/501.
convert.exe: no images defined `G:\demo\image\resizeImage\frame1.jpg' @ error/convert.c/ConvertImageCommand/3212.

同样的问题是.png文件。我在Window8上安装了ImageMagick-6.9.1-2-Q16-x64-dll.exe。但是，如果我在命令提示符下运行以下命令

convert -resize 1024x768 G:\\demo\\image\\frame.jpg G:\\demo\\image\\resizeImage\\frame1.jpg

它成功执行并复制了目标文件夹中已调整大小的图像。如果有人知道请回复。

谢谢

Answer 1

只有当我使用ProcessBuilder#directory(File)

更改运行执行的工作目录时，才能使其正常工作

ProcessBuilder pb = new ProcessBuilder(
                "C:\\Program Files\\ImageMagick-6.9.1-Q16\\convert.exe",
                "C:\\Path\to\Large.png",
                "-resize", "1027x768",
                "C:\\Path\to\small.png");

try {
    pb.inheritIO();
    pb.redirectErrorStream();
    pb.directory(new File("C:\\Program Files\\ImageMagick-6.9.1-Q16"));
    Process p = pb.start();
    try (InputStream is = p.getInputStream()) {
        int in = -1;
        while ((in = is.read()) != -1) {
            System.out.print((char)in);
        }
    }
    System.out.println("Exited with " + p.waitFor());
} catch (IOException | InterruptedException ex) {
    ex.printStackTrace();
}

Answer 2

在我的情况下，它已经帮助安装静态版本的ImageMagick而不是 dynamic / dll 。试试看。顺便说一句。 call-funktionality应与x86或x64相同。

使用Java运行图像魔法转换命令无法加载模块错误

2 个答案: