原因: python 这个命令 用java运行没有找到
解决:直接改用python.exe这个文件的绝对路径
错误源代码
public class Test {
public static void main(String[] args) {
Process proc;
try {
proc = Runtime.getRuntime().exec("python C:\\Users\\Administrator\\Desktop\\javapydemo\\src\\main\\java\\com\\example\\javapydemo\\demo\\main.py");//执行Py文件
//用输入输出流来截取结果
BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
proc.waitFor();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
修改后源代码
public class Test {
public static void main(String[] args) {
Process proc;
try {
proc = Runtime.getRuntime().exec("C:\\Users\\Administrator\\AppData\\Local\\Programs\\Python\\Python37\\python.exe C:\\Users\\Administrator\\Desktop\\javapydemo\\src\\main\\java\\com\\example\\javapydemo\\demo\\main.py");//执行Py文件
//用输入输出流来截取结果
BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
in.close();
proc.waitFor();
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}