java用runtime调用python程序报错

Question

java用runtime调用python程序报错

        String executer = "E:\\anaconda\\envs\\pytorch\\python";
        String file_path3 = "C:\\Users\\asus190611tan\\Desktop\\yolov5pro\\1.py";
        String[] command_line = new String[] {executer, file_path1};
        try {
            Process process = Runtime.getRuntime().exec(command_line);
            BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(),"GBK"));
            String line;
            while ((line = in.readLine()) != null) {
                System.out.println(line);
            }
            in.close();
            // java代码中的 process.waitFor() 返回值（和我们通常意义上见到的0与1定义正好相反）
            // 返回值为0 - 表示调用python脚本成功；
            // 返回值为1 - 表示调用python脚本失败。
            int re = process.waitFor();
            System.out.println("调用 python 脚本是否成功：" + re);
        } catch (IOException e1) {
            e1.printStackTrace();
        } catch (InterruptedException e2) {
            e2.printStackTrace();
        }

网上查了，runtime函数是在cmd里面跑，于是我去cmd里面运行了一下

C:\Users\asus190611tan>E:\anaconda\envs\pytorch\python C:\Users\asus190611tan\Desktop\yolov5pro\track.py
Traceback (most recent call last):
  File "C:\Users\asus190611tan\Desktop\yolov5pro\track.py", line 303, in <module>
    detect(args)
  File "C:\Users\asus190611tan\Desktop\yolov5pro\track.py", line 103, in detect
    cfg.merge_from_file(opt.config_deepsort)
  File "C:\Users\asus190611tan\Desktop\yolov5pro\deep_sort_pytorch\utils\parser.py", line 24, in merge_from_file
    with open(config_file, 'r') as fo:
FileNotFoundError: [Errno 2] No such file or directory: 'deep_sort_pytorch/configs/deep_sort.yaml'

报错文件

检测了一下文件路径是对的

Answer 1

这里可能是工作路径的问题。因为你使用了相对路径。你可以尝试在命令行下进入到工程所在目录，再试试会不会出错。