java调用python

1.下载jpython.jar的链接：http://download.csdn.net/detail/haleyliu123/9862861

2.在Java类中直接执行Python语句

package com.lrq.test;import java.io.UnsupportedEncodingException;import java.util.Properties;import org.python.util.PythonInterpreter;public class FristPython { public static void main(String args[]) throws UnsupportedEncodingException { Properties props = new Properties(); props.put("python.console.encoding", "UTF-8"); Properties preprops = System.getProperties(); PythonInterpreter.initialize(preprops, props, new String[0]); PythonInterpreter interpreter = new PythonInterpreter(); String swords=new String("swords=('tianWen','渊虹','太阿','干将','莫邪','雪霁','水寒'); ".getBytes("ISO-8859-1"),"UTF-8");     interpreter.exec(swords);         interpreter.exec("print swords[0].encode('utf-8');");         }}

结果：

3.在java中调用python脚本中的函数

#!/user/bin/pythondef plusFunc(a, b):      return a + b  

package com.lrq.test;import java.io.UnsupportedEncodingException;import org.python.core.PyFunction;import org.python.core.PyInteger;import org.python.core.PyObject;import org.python.util.PythonInterpreter;public class UsePythonFunction { public static void main(String args[]) throws UnsupportedEncodingException { PythonInterpreter interpreter = new PythonInterpreter();     interpreter.execfile("test.py");     PyFunction func = (PyFunction) interpreter.get("plusFunc",PyFunction.class);         int a =12, b = 2;     PyObject pyobj = func.__call__(new PyInteger(a), new PyInteger(b));     //转码     String newStr = new String(pyobj.toString().getBytes("iso8859-1"), "utf-8");     System.out.println("anwser = " + newStr); }}

结果：

4.使用java直接执行python脚本

#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)

package com.lrq.test;import org.python.util.PythonInterpreter;public class ExcutePythonFile{public static void main(String args[]){    PythonInterpreter interpreter = new PythonInterpreter();    interpreter.execfile("input.py"); }}

结果：