Java使用Jpython调用Python_jpy 调用本地python-优快云博客

本文链接：https://blog.youkuaiyun.com/csdnjava2017/article/details/77075558

这篇博客介绍了如何在Java中使用Jython库来直接执行Python语句以及调用Python脚本文件，展示了如何将字符串形式的Python代码传递给解释器以及传入输入流对象的方式。

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直接执行python语句，将语句以String 的形式传递给python解释器

import org.python.util.PythonInterpreter;

/**
 * Created by Mark on 2017/8/11.
 */
public class H {
    public static void main(String[] args) {
        PythonInterpreter pythonInterpreter = new PythonInterpreter();
        pythonInterpreter.exec("print('Hello Java! I am Python ,Are you OK?')");
    }
}

C:\Utility\Java\jdk1.8.0_91\bin\java -Didea.launcher.port=7532 “-Didea.launcher.bin.path=C:\Utility\IDE\IDEA\IntelliJ IDEA 2016.2.3\bin” -Dfile.encoding=UTF-8 -classpath “C:\Utility\Java\jdk1.8.0_91\jre\lib\charsets.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\deploy.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\access-bridge-32.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\cldrdata.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\dnsns.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\jaccess.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\jfxrt.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\localedata.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\nashorn.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\sunec.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\sunjce_provider.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\sunmscapi.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\sunpkcs11.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\ext\zipfs.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\javaws.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\jce.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\jfr.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\jfxswt.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\jsse.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\management-agent.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\plugin.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\resources.jar;C:\Utility\Java\jdk1.8.0_91\jre\lib\rt.jar;D:\IdeaProjects\tide\out\production\tide;D:\IdeaProjects\tide\lib\jython-standalone-2.7.0.jar;C:\Utility\IDE\IDEA\IntelliJ IDEA 2016.2.3\lib\idea_rt.jar” com.intellij.rt.execution.application.AppMain H
Hello Java! I am Python ,Are you OK?

Process finished with exit code 0

将Python脚本文件路径以String形式传递给Python解释器，也可以传输入流对象

import org.python.core.PyFloat;
import org.python.core.PyFunction;
import org.python.core.PyInteger;
import org.python.core.PyObject;
import org.python.util.PythonInterpreter;

/**
 * Created by Mark on 2017/8/11.
 */
public class H {
    public static void main(String[] args) {
        PythonInterpreter pythonInterpreter = new PythonInterpreter();
        pythonInterpreter.exec("print('Hello Java! I am Python ,Are you OK?')");
        pythonInterpreter.execfile("D:\\img\\add.py");
        PyFunction add_func = pythonInterpreter.get("add_func", PyFunction.class);
        int i=10;
        float b=2.5f;
        PyObject pyObject = add_func.__call__(new PyInteger(i), new PyFloat(b));
        System.out.println(i+ " + "+b+" = "+pyObject.toString());
    }
}