[转]在Java中调用Python
在执行之前都需要把jython对应的包加载进去，这个是必须的。1.在java类中直接执行python语句
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[*]import javax.script.*;
[*]
[*]import org.python.util.PythonInterpreter;
[*]
[*]import java.io.*;
[*]import static java.lang.System.*;
[*]public class FirstJavaScript
[*]{
[*] public static void main(String args[])
[*] {
[*]
[*] PythonInterpreter interpreter = new PythonInterpreter();
[*] interpreter.exec("days=('mod','Tue','Wed','Thu','Fri','Sat','Sun'); ");
[*] interpreter.exec("print days;");
[*]
[*]
[*] }//main
[*]}
这样得到的结果是Tue，在控制台显示出来，这是直接进行调用的。
2.在java中调用本机python脚本中的函数：
首先建立一个python脚本，名字为：my_utils.py
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[*]def adder(a, b):
[*] return a + b
然后建立一个java类，用来测试，
java类代码 FirstJavaScript：
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[*]import javax.script.*;
[*]
[*]import org.python.core.PyFunction;
[*]import org.python.core.PyInteger;
[*]import org.python.core.PyObject;
[*]import org.python.util.PythonInterpreter;
[*]
[*]import java.io.*;
[*]import static java.lang.System.*;
[*]public class FirstJavaScript
[*]{
[*] public static void main(String args[])
[*] {
[*]
[*] PythonInterpreter interpreter = new PythonInterpreter();
[*] interpreter.execfile("C:\\Python27\\programs\\my_utils.py");
[*] PyFunction func = (PyFunction)interpreter.get("adder",PyFunction.class);
[*]
[*] int a = 2010, b = 2 ;
[*] PyObject pyobj = func.__call__(new PyInteger(a), new PyInteger(b));
[*] System.out.println("anwser = " + pyobj.toString());
[*]
[*]
[*] }//main
[*]}
得到的结果是：anwser = 2012
3.使用java直接执行python脚本，
建立脚本inputpy
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[*]#open files
[*]
[*]print 'hello'
[*]number=[3,5,2,0,6]
[*]print number
[*]number.sort()
[*]print number
[*]number.append(0)
[*]print number
[*]print number.count(0)
[*]print number.index(5)
建立java类，调用这个脚本：
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[*]import javax.script.*;
[*]
[*]import org.python.core.PyFunction;
[*]import org.python.core.PyInteger;
[*]import org.python.core.PyObject;
[*]import org.python.util.PythonInterpreter;
[*]
[*]import java.io.*;
[*]import static java.lang.System.*;
[*]public class FirstJavaScript
[*]{
[*] public static void main(String args[])
[*] {
[*]
[*] PythonInterpreter interpreter = new PythonInterpreter();
[*] interpreter.execfile("C:\\Python27\\programs\\input.py");
[*] }//main
[*]}
得到的结果是：
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[*]hello
[*]
[*]
[*]
[*]2
[*]3
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