java - 使用 commons-exec 执行复杂命令

Question

我一直在努力通过一个简单的 Java 应用程序执行命令。我需要执行的命令位于 http://www.imagemagick.org/Usage/annotating/#wmark_text (上面的标题“图像水印”)，内容如下:

convert -size 140x80 xc:none -fill grey -gravity NorthWest -draw "text 10,10 'Copyright'" -gravity SouthEast -draw "text 5,15 'Copyright'" miff:- | composite -tile - /Users/latu/Pictures/desert.jpg  /Users/latu/Pictures/desertCP.jpg

(我已经通过直接将命令输入终端来测试该命令并且它有效)

我无法正确创建命令。使用我的代码构建以下命令:

convert -size 140x80 xc:none -fill grey -gravity NorthWest -draw "text 10,10 'Copyright" -gravity SouthEast -draw "text 5,15 'Copyright" miff:- | composite -title - /Users/latu/Pictures/desert.jpg /Users/latu/Pictures/desertCP.jpg

此外，还会返回一些与图像 magick 相关的错误:

convert: non-conforming drawing primitive definition `text 10,10 'Copyright' @ error/draw.c/DrawImage/3178.
convert: non-conforming drawing primitive definition `text 5,15 'Copyright' @ error/draw.c/DrawImage/3178.
convert: unable to open image `- |': No such file or directory @ error/blob.c/OpenBlob/2643.
convert: unable to open image `composite': No such file or directory @ error/blob.c/OpenBlob/2643.
convert: unable to open image `composite': No such file or directory @ error/blob.c/OpenBlob/2643.
convert: no decode delegate for this image format `composite' @ error/constitute.c/ReadImage/555.
convert: unrecognized option `-title' @ error/convert.c/ConvertImageCommand/2984.

如果有人知道我需要在代码中更改什么才能构建正确的命令，或者知道更好的方法，请告诉我。

The parts of the code that definetly cause trouble are ' ' around Copyright which are not printed in the generated command, and the pipe command at .addArgument("miff:- | ",false);

这是我使用的代码:

import org.apache.commons.exec.*;
import java.io.IOException;

class Test {

    public static void main( String[] args )
    {
        applyWatermark(null,null);
    }

    public static void applyWatermark(String imagePaath,String watermark){
        String imagePath = "/Users/latu/Pictures/desert.jpg";
        String imagePath2 = "/Users/latu/Pictures/desertCP.jpg";

        CommandLine convert_cmd = new CommandLine("convert");
        convert_cmd.addArgument("-size")
                .addArgument("140x80")
                .addArgument("xc:none")
                .addArgument("-fill")
                .addArgument("grey")
                .addArgument("-gravity")
                .addArgument("NorthWest")
                .addArgument("-draw")
                .addArgument( "text 10,10 'Copyright'")
                .addArgument("-gravity")
                .addArgument("SouthEast")
                .addArgument("-draw")
                .addArgument("text 5,15 'Copyright'")
                .addArgument("miff:- |",false);
//      CommandLine wm_cmd = new CommandLine("composite");
        convert_cmd.addArgument("composite")
                .addArgument("-title")
                .addArgument("- "+imagePath,false)
                .addArgument(imagePath2);


        System.out.println(convert_cmd.toString());

        executeCommand(convert_cmd);
//      executeCommand(wm_cmd);

        /*
         http://www.imagemagick.org/Usage/annotating/#wmark_text
         correct command: convert -size 140x80 xc:none -fill grey -gravity NorthWest -draw "text 10,10 'Copyright'" -gravity SouthEast -draw "text 5,15 'Copyright'" miff:- | composite -tile - /Users/latu/Pictures/desert.jpg  /Users/latu/Pictures/desertCP.jpg
         */
    }
    private static  void executeCommand(CommandLine cmdLine){
        DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();

        ExecuteWatchdog watchdog = new ExecuteWatchdog(60*1000);
        Executor executor = new DefaultExecutor();
        executor.setExitValue(1);
        executor.setWatchdog(watchdog);
        try
        {
            executor.execute(cmdLine, resultHandler);
        } catch (ExecuteException e)
        {
            e.printStackTrace();
        } catch (IOException e)
        {
            e.printStackTrace();
        }
    }
}

Answer 1

遵循 t his question 上接受的答案我已将代码更改为以下内容，该代码按预期工作:

    String [] cmd ={"-c","convert -size 140x80 xc:none -fill grey -gravity NorthWest -draw \"text 10,10 'Copyright'\" -gravity SouthEast -draw \"text 5,15 'Copyright'\" miff:- | composite -tile - /Users/latu/Pictures/desert.jpg  /Users/latu/Pictures/desertCP.jpg"};
    CommandLine convert_cmd = new CommandLine("/bin/sh");
    convert_cmd.addArguments( cmd,false );