本文实例讲述了Java程序中实现调用Python脚本的方法。分享给大家供大家参考，具体如下：

在程序开发中，有时候需要Java程序中调用相关Python脚本，以下内容记录了先关步骤和可能出现问题的解决办法。

1、在Eclipse中新建Maven工程；

2、pom.xml文件中添加如下依赖包之后update maven工程；

? 1 2 3 4 5 6 7 8 9 10 <dependency> <groupId>org.python</groupId> <artifactId>jython</artifactId> <version>2.7.0</version> </dependency> <dependency> <groupId>org.python</groupId> <artifactId>jython-standalone</artifactId> <version>2.7.0</version> </dependency>

3、编写如下测试代码；

? 1 2 3 4 5 6 7 8 import org.python.util.PythonInterpreter; public class JpythonScript { 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];"); } }

4、测试：

出现如下错误：

console: Failed to install '': java.nio.charset.UnsupportedCharsetException: cp0.
Exception in thread "main" ImportError: Cannot import site module and its dependencies: No module named site
Determine if the following attributes are correct:
* sys.path: ['...python\\jython\\2.7.0\\Lib', '__classpath__', '__pyclasspath__/']
This attribute might be including the wrong directories, such as from CPython
* sys.prefix:***\jython\2.7.0
This attribute is set by the system property python.home, although it can
be often automatically determined by the location of the Jython jar file
You can use the -S option or python.import.site=false to not import the site module

5、问题解决：

重构代码如下：

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 import java.util.Properties; import org.python.util.PythonInterpreter; public class JpythonScript { public static void main(String args[]) { Properties props = new Properties(); props.put("python.home", "path to the Lib folder"); props.put("python.console.encoding", "UTF-8"); props.put("python.security.respectJavaAccessibility", "false"); props.put("python.import.site", "false"); Properties preprops = System.getProperties(); PythonInterpreter.initialize(preprops, props, new String[0]); PythonInterpreter interpreter = new PythonInterpreter(); interpreter.exec("days=('mod','Tue','Wed','Thu','Fri','Sat','Sun'); "); interpreter.exec("print days[1];"); } }

6、编译成功。

7、解决问题参考：

http://bugs.jython.org/issue2355

补充：jpython抛错Cannot import site module的解决方法

Exception in thread "main" ImportError: Cannot import site module and its dependencies: No module named site

? 1 2 3 4 5 6 7 8 9 10 public class JpythonScript { public static void main(String args[]) { Properties props = new Properties(); props.put("python.import.site", "false"); Properties preprops = System.getProperties(); PythonInterpreter.initialize(preprops, props, new String[0]); PythonInterpreter interpreter = new PythonInterpreter(); interpreter.exec("days=('mod','Tue','Wed','Thu','Fri','Sat','Sun'); "); interpreter.exec("print days[1];"); } ? 1 2 3 4 5 6 7 8 9 10 // 进行复杂类接受处理 Map<String, Object> res = new HashMap<String, Object>(); res.put("1", "Danny"); res.put("2", "Fanny"); PythonInterpreter interpM = new PythonInterpreter(); interpM.execfile("./src/com/DataDeal.py"); PyFunction pyFunctionM = (PyFunction) interpM.get("main", PyFunction.class); Map<PyObject, PyObject> tableM = new HashMap<PyObject, PyObject>(); tableM.put(new PyString("conf"), PyJavaType.wrapJavaObject(res)); PyDictionary pydM = new PyDictionary(tableM);

希望本文所述对大家java程序设计有所帮助。

原文链接：http://www.cnblogs.com/liinux/p/5481849.html