如何在Java中通过终端执行python脚本

Question

我试图通过终端运行python脚本，但它总是引发异常：没有这样的文件或目录

StringBuffer output = new StringBuffer();

String command = "python3 Users/lounah/Documents/programming/ApplicationName/scriptName.py " + params.toString();

ProcessBuilder processBuilder = new ProcessBuilder(command);
Process process = processBuilder.start();

BufferedReader reader =
        new BufferedReader(new InputStreamReader(process.getInputStream()));

String line;
while ((line = reader.readLine())!= null) {
    output.append(line + "\n");
}

Answer 1

当您在ProcessBuilder中传递字符串时，它会尝试运行位于该路径中的程序 Instaed你应该使用String[]和可执行文件的路径（'/python3/python.exe'或'python'或'py'），然后是脚本的路径，后跟参数。

String[] command = {
    "python3",
    "Users/lounah/Documents/programming/ApplicationName/scriptName.py", 
    params.toString()
};
ProcessBuilder processBuilder = new ProcessBuilder(command);