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今天,给大家介绍下如何在java中调用python方法。下面我们进入正题
1.在java类中直接执行python语句
package com.lyz.test.jython;
import org.python.util.PythonInterpreter;
public class FirstJythonScript {
public static void main(String args[]) {
PythonInterpreter interpreter = new PythonInterpreter();
interpreter.exec("days=('mod','Tue','Wed','Thu','Fri','Sat','Sun'); ");
interpreter.exec("print days[1];");
}
}
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
def adder(a, b):
return a + b
然后建立一个java类,用来测试,
package com.lyz.test.jython.function;
import org.python.core.PyFunction;
import org.python.core.PyInteger;
import org.python.core.PyObject;
import org.python.util.PythonInterpreter;
public class FirstJythonScript {
public static void main(String args[]) {
PythonInterpreter interpreter = new PythonInterpreter();
interpreter.execfile("D:/Workspaces/J2EE/Test/config/my_utils.py");
PyFunction func = (PyFunction) interpreter.get("adder", PyFunction.class);
int a = 2010, b = 6;
PyObject pyobj = func.__call__(new PyInteger(a), new PyInteger(b));
System.out.println("anwser = " + pyobj.toString());
}
}
得到的结果是:anwser = 20163.使用java直接执行python脚本
建立脚本input.py
#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package com.lyz.test.jython.script;
import org.python.util.PythonInterpreter;
public class FirstJythonScript {
public static void main(String args[]) {
PythonInterpreter interpreter = new PythonInterpreter();
interpreter.execfile("D:/Workspaces/J2EE/Test/config/input.py");
}
}
结果:
hello
[3, 5, 2, 0, 6]
[0, 2, 3, 5, 6]
[0, 2, 3, 5, 6, 0]
2
3
注:大家可以到链接http://download.csdn.net/detail/l1028386804/9464731下载所需要的jar包,到链接http://download.csdn.net/detail/l1028386804/9464750下载完整的示例程序