Java程序中调用Python脚本的方法
本文引自http://www.cnblogs.com/liinux/p/5481849.html
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；
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<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 import org.python.util.PythonInterpreter;
2
3 public class JpythonScript {
4 public static void main(String args[]) {
5 PythonInterpreter interpreter = new PythonInterpreter();
6 interpreter.exec("days=('mod','Tue','Wed','Thu','Fri','Sat','Sun'); ");
7 interpreter.exec("print days[1];");
8 }
9 }
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：
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：
