Java直接调用Python

使用Runtime.getRuntime()执行脚本文件，这种方式和.net下面调用cmd执行命令的方式类似。如果执行的python脚本有引用第三方包的，建议使用此种方式。

Process proc = Runtime.getRuntime().exec("python  D:\demo.py");  
proc.waitFor();  

Java调用代码：

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Test5 {
        public static void main(String[] args){
                try{
                        System.out.println("start");
                        Process pr = Runtime.getRuntime().exec("d:\python27\python.exe test.py");
                        
                        BufferedReader in = new BufferedReader(new
                                InputStreamReader(pr.getInputStream()));
                        String line;
                        while ((line = in.readLine()) != null) {
                            System.out.println(line);
                        }
                        in.close();
                        pr.waitFor();
                        System.out.println("end");
                } catch (Exception e){
                            e.printStackTrace();
                        }
                }
}

test.py的文件内容为：

import sys
import urllib
print "hello"
print sys.path

java程序运行的结果为：

start
hello
["D:\eclipse_jee_workspace\ZLabTest", "C:\Windows\system32\python27.zip", "D:\Python27\DLLs", "D:\Python27\lib", "D:\Python27\lib\plat-win", "D:\Python27\lib\lib-tk", "D:\Python27", "D:\Python27\lib\site-packages"]
end