我们可以从java调用python方法吗? [英] Can we call a python method from java?
问题描述
我知道jython允许我们从任何java的类文件中调用java方法,就好像它们是为python编写的那样,但反过来可能???
I know jython allows us to call a java method from any java's classfile as if they were written for python, but is the reverse possible ???
我已经有这么多用python编写的算法,它们与python和jython很好地工作,但它们缺少一个合适的GUI。我计划将GUI与java一起使用并保持python库的完整性。我无法用jython或python编写一个好的GUI,我无法用python编写好的算法。所以我找到的解决方案是合并java的GUI和python的库。这可能吗。我可以从java调用python的库。
I already have so many algorithms that written in python, they work pretty well with python and jython but they lack a proper GUI. I am planing to bring the GUI with the java and to keep the python library intact. I am not able to write a good GUI with jython or python and I cannot write a good algorithm with python. So the solution I found was to merge java's GUI and python's library. Is this possible. Can I call python's library from java.
推荐答案
是的,可以做到。通常这将通过创建 PythonInterpreter
对象然后使用它来调用python类来完成。
Yes, that can be done . Normally this will be done by creating a PythonInterpreter
object and then calling the python class using that .
考虑以下内容例如:
Java:
import org.python.core.PyInstance;
import org.python.util.PythonInterpreter;
public class InterpreterExample
{
PythonInterpreter interpreter = null;
public InterpreterExample()
{
PythonInterpreter.initialize(System.getProperties(),
System.getProperties(), new String[0]);
this.interpreter = new PythonInterpreter();
}
void execfile( final String fileName )
{
this.interpreter.execfile(fileName);
}
PyInstance createClass( final String className, final String opts )
{
return (PyInstance) this.interpreter.eval(className + "(" + opts + ")");
}
public static void main( String gargs[] )
{
InterpreterExample ie = new InterpreterExample();
ie.execfile("hello.py");
PyInstance hello = ie.createClass("Hello", "None");
hello.invoke("run");
}
}
Python:
class Hello:
__gui = None
def __init__(self, gui):
self.__gui = gui
def run(self):
print 'Hello world!'
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