我想在RPi的相机模块使用jar文件捕获照片后运行python脚本(tensorflow的图像标签脚本)。我已经尝试过Runtime和ProcessBuilder,但它说没有找到文件或目录。
这是我的运行时代码代码:
Process rt = Runtime.getRuntime().exec("python3 -m scripts.image-label.py");
rt.waitFor();
BufferedReader in = new BufferedReader(new InputStreamReader(rt.getInputStream()));
String read = in.readLine();
ML = read;
result resfin = new result();
resfin.setVisible(true);
这是我的ProcessBuilder的代码:
ProcessBuilder builder = new ProcessBuilder("/home/pi/Desktop/ML/scripts/image-label.py");
Process np = builder.start();
np.waitFor();
BufferedReader in = new BufferedReader(new InputStreamReader(np.getInputStream()));
String read = in.readLine();
ML = read;
result resfin = new result();
resfin.setVisible(true);
难道我做错了什么?或者我错过了什么?任何帮助,将不胜感激!
我已尝试使用以下代码,它工作正常,虽然我没有尝试过-m“module”标志,因为我不知道如何在python中创建模块文件。 发现代码的一些问题: 1.您需要将python3作为参数传递给流程构建器,如下所示 2.为python文件提供绝对路径。 3.您可以使用Runtime或ProcessBuilder,而不会出现问题。
// Process rt = Runtime.getRuntime().exec("python3 -m /Users/<user-name>/demo/JavaNotepad/src/main/java/com/mypython.py");
ProcessBuilder builder = new ProcessBuilder("python3", "-m", "/Users/<user-name>/demo/JavaNotepad/src/main/java/com/mypython.py");
Process rt = builder.start();
int exitCode = rt.waitFor();
System.out.println("Process exited with : " + exitCode);
BufferedReader in = new BufferedReader(new InputStreamReader(rt.getInputStream()));
BufferedReader err = new BufferedReader(new InputStreamReader(rt.getErrorStream()));
System.out.println("Python file output:");
String line;
BufferedReader reader;
if (exitCode != 0) {
reader = err;
} else {
reader = in;
}
while ((line = reader.readLine()) != null) {
System.out.println(line);
}