问题
Any help is very valuable for me.
I am trying to generate a polygon using imagemagick. I am passing imagemagick query to
Runtime.getRuntime().exec(query)
but its not working.
Below is the detail of steps followed by me
getting correct result executing below query directly in commandline in CentOS:
convert -size 100x60 xc:skyblue -fill white -stroke black -draw " polygon 40,10,20,50,90,10,70,40 " draw_polygon.gif
when i am using java's in window machine, again it is giving correct output. Runtime.getRuntime().exec(query);
But when i am using same java code in centOS then it is giving error.
public class TestIMPoly {
public static void main(String[] args) {
try {
String query = "convert -size 100x60 xc:skyblue -fill white -stroke black -draw \" polygon 40,10,20,50,90,10,70,40 \" draw_polygon.gif";
System.out.println("query : "+query);
Process p = Runtime.getRuntime().exec(query);
// below part is used for determing if errro occured or success (this part is working correct)
if(p != null) {
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new
InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
String s = null;
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
}
}
try {
p.waitFor();
System.out.println(p.exitValue());
} catch (InterruptedException e) {
e.printStackTrace();
}
// below part is used for printing the success message or error message (this part is also working correct)
InputStream is = p.getInputStream();
if (null != is) {
int size = is.available();
if (size > 0) {
byte[] bytes = new byte[size];
int numread = is.read(bytes);
System.out.println("numread : "+numread);
if (numread != 0) {
String msg = new String(bytes);
System.out.println("msg : "+msg);
if (null != msg && msg.length() > 0) {
String[] params = msg.split(" ");
System.out.println("null != params"+(null != params));
if (null != params && params.length > 0) {
System.out.println();
System.out.println(params[2]);
System.out.println();
is.close();
int width = Integer.parseInt(params[2].substring(0, params[2].indexOf("x")));
int height = Integer.parseInt(params[2].substring(params[2].lastIndexOf("x") + 1));
System.out.println("width :"+width);
System.out.println("height :"+height);
}
}
}
}
}
}catch(Exception e) {
e.printStackTrace();
}
}
}
if i am using query
convert -size 100x60 xc:skyblue -fill white -stroke black -draw "polygon 40,10 20,50 90,10 70,40" draw_polygon.gif
then the error message i am getting as below (same query is working fine in executing directly in commandline in centos):
convert: unable to open image '40,10': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '20,50': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '90,10': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '70,40"': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
1
if i am using query
convert -size 100x60 xc:skyblue -fill white -stroke black -draw " polygon 40,10,20,50,90,10,70,40 " draw_polygon.gif
then the error message i am getting as below (same query is working fine in executing directly in commandline in centos):
convert: unable to open image 'polygon': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '40,10,20,50,90,10,70,40': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '"': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
1
=============================
Here is the imagemagick convert -version output form commandline as well as using
Process p = Runtime.getRuntime().exec("convert -version");
output:
Version: ImageMagick 7.0.7-5 Q16 x86_64 2017-10-01 http://www.imagemagick.org
Copyright: © 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules OpenMP
Delegates (built-in): bzlib cairo djvu fftw fontconfig fpx freetype gslib jng jpeg lcms ltdl lzma pangocairo png ps tiff webp wmf x xml zlib
As this is marked duplicate,
i checked Similar Question and tried accordingly but still i am getting almost similar result, i want to add another scenario as below :
The query which is working fine from commandline (to make corners round shape):
convert D:\img-query\complex\tect.jpg (
+clone
-alpha extract
-draw "fill black polygon 0,0 0,20 20,0 fill white circle 50,50 50,0"
( +clone -flip )
-compose Multiply
-composite ( +clone -flop )
-compose Multiply
-composite
)
-alpha off
-compose CopyOpacity
-composite D:\img-query\complex\round.png
But when i am using every arguments as separate string, even then i am getting error. below is the java code used by me,
List<String> commands = new ArrayList<>();
commands.add("D:/software/ImageMagick-7.0.5-2-portable-Q16-x64/convert.exe");
commands.add(reSizedCoverBefor3D);
//commands.add("(");
commands.add("+clone");
commands.add("-alpha");
commands.add("extract");
commands.add("-draw");
//commands.add("fill");
//commands.add("black");
commands.add("polygon");
commands.add("0,0 0,20 20,0");
// commands.add("0,50");
// commands.add("50,0");
commands.add("fill");
commands.add("white");
commands.add("circle");
commands.add("50,50 50,0");
//commands.add("50,0");
//commands.add("(");
commands.add("+clone");
commands.add("-flip");
//commands.add(")");
commands.add("-compose");
commands.add("Multiply");
commands.add("-composite");
commands.add("(");
commands.add("+clone");
commands.add("-flop");
//commands.add(")");
commands.add("-compose");
commands.add("Multiply");
commands.add("-composite");
commands.add(")");
commands.add("-alpha");
commands.add("off");
commands.add("-compose");
commands.add("CopyOpacity");
commands.add("-composite");
commands.add(roundaedImageFullPath);
ProcessBuilder pb = new ProcessBuilder(commands);
pb.inheritIO();
try {
int j = pb.start().waitFor();
System.out.println("Finished with code: " + j);
} catch (Exception e) {
System.out.println("asdasdasd: " + e);
}
Here is error message:
convert: unable to open image 'black': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image 'polygon': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '0,0 0,20 20,0': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image 'fill': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image 'white': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image 'circle': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '50,50 50,0': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
convert: unable to open image '50,0': No such file or directory @ error/blob.c/OpenBlob/3146.
convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/509.
Finished with code: 1
来源：https://stackoverflow.com/questions/57474677/imagemagick-convert-command-for-generating-polygon-is-working-in-command-line-bu