Java直接调用Python

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Java直接调用Python
转载 2015Java直接调用Python
转载 2015年04月07日 16:38:27 3173
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。

[java] view plain copy
Process proc = Runtime.getRuntime().exec(“python D:\demo.py”);
proc.waitFor();

Java调用代码:
[java] view plain copy
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:

[python] view plain copy
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年04月07日 16:38:27 3173
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。

[java] view plain copy
Process proc = Runtime.getRuntime().exec(“python D:\demo.py”);
proc.waitFor();

Java调用代码:
[java] view plain copy
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:

[python] view plain copy
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

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