一個小示例
需要 jython-engine.jar jython.jar
java 文件
package test.jsr223;
import java.io.*;
import java.util.*;
import javax.script.*;
public class jsr223 {
private ScriptEngine engine;
static private Map<String, ScriptEngineFactory> scriptMap = null;
static private void createMaps() {
if (scriptMap == null) {
scriptMap = new HashMap<String, ScriptEngineFactory>();
ScriptEngineManager manager = new ScriptEngineManager();
List<ScriptEngineFactory> list = manager.getEngineFactories();
for (ScriptEngineFactory scriptEngineFactory : list) {
scriptMap.put(scriptEngineFactory.getEngineName(),
scriptEngineFactory);
scriptMap.put(scriptEngineFactory.getLanguageName(),
scriptEngineFactory);
List<String> mimeList = scriptEngineFactory.getMimeTypes();
for (String string2 : mimeList) {
scriptMap.put(string2, scriptEngineFactory);
}
}
}
}
static public ScriptEngine initEngineByScript(Scanner reader) {
createMaps();
ScriptEngine engine = null;
String firstLine = reader.nextLine();
if (firstLine != null) {
Set<String> keys = scriptMap.keySet();
for (String string : keys) {
if (firstLine.indexOf(string) != -1) {
engine = scriptMap.get(string).getScriptEngine();
break;
}
}
}
return engine;
}
static public ScriptEngine initEngineByFileName(String scriptFileName) {
ScriptEngine engine = null;
int index = scriptFileName.lastIndexOf('.');
if (index != -1) {
String ext = scriptFileName.substring(index + 1, scriptFileName
.length());
ScriptEngineManager manager = new ScriptEngineManager();
engine = manager.getEngineByExtension(ext);
}
return engine;
}
static public ScriptEngine initEngine(String scriptFileName) {
ScriptEngine engine = null;
Scanner scanner = null;
try {
scanner = new Scanner(new InputStreamReader(new FileInputStream(
scriptFileName)));
engine = initEngineByScript(scanner);
if (engine == null)
engine = initEngineByFileName(scriptFileName);
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (scanner != null)
scanner.close();
}
return engine;
}
private void init(String scriptFileName) {
engine = initEngine(scriptFileName);
Reader reader = null;
try {
reader = new InputStreamReader(new FileInputStream(scriptFileName));
engine.eval(reader);
} catch (FileNotFoundException e) {
System.err.printf("Script file %s can't find!\n", scriptFileName);
e.printStackTrace();
System.exit(-1);
} catch (ScriptException e) {
System.err.printf("Run script file %s error!\n", scriptFileName);
e.printStackTrace();
} finally {
if (reader != null)
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public jsr223(File scriptFile) {
String name = scriptFile.getName();
init(name);
}
public jsr223(String scriptFileName) {
init(scriptFileName);
}
static public void ShowAllAvilableScript() {
ScriptEngineManager manager = new ScriptEngineManager();
List<ScriptEngineFactory> list = manager.getEngineFactories();
for (ScriptEngineFactory scriptEngineFactory : list) {
System.out.printf(
"EngineName:%s LanguageName:%s Extensions:%s Mime:%s\n",
scriptEngineFactory.getEngineName(), scriptEngineFactory
.getLanguageName(), scriptEngineFactory
.getExtensions(), scriptEngineFactory
.getMimeTypes());
}
}
public void callStart() throws ScriptException, NoSuchMethodException {
Invocable invocableEngine = (Invocable) engine;
invocableEngine.invokeFunction("Start", "hello world 世界你好\n");
}
public void callStop() throws ScriptException, NoSuchMethodException {
Invocable invocableEngine = (Invocable) engine;
invocableEngine.invokeFunction("Stop", "GoodBye 再見\n");
}
/**
* @param args
* @throws ScriptException
* @throws NoSuchMethodException
*/
public static void main(String[] args) throws ScriptException,
NoSuchMethodException {
// TODO Auto-generated method stub
//ShowAllAvilableScript();
String scriptFileName = "E:\\workspace\\JSR223\\src\\test\\jsr223\\test.py";
jsr223 jsr = new jsr223(scriptFileName);
jsr.callStart();
jsr.callStop();
}
}
jython 文件
jython的本地化太....了。在py中用ToJavaString,ToPyString函數(shù)
#/usr/bin/env python
#coding=gbk
import sys
def GetLocalEncoding():
'''Get local system encoding
return None when fail.
'''
import java.lang.System as JSystem
propertys=["sun.jnu.encoding","file.encoding"]
Encoding=None;
for property in propertys:
Encoding=JSystem.getProperty(property)
if Encoding != None:
break
return Encoding
def ToJavaString( astr,localEncoding=GetLocalEncoding()):
import java.lang.String as JString
if localEncoding == None:
raise EnvironmentError("Can't get local encoding!\n")
tmpstr = JString(astr)
rtnstr = JString (tmpstr.getBytes("ISO8859_1"), localEncoding)
if tmpstr.length() != rtnstr.length():
return rtnstr
else:
return astr
def ToPyString(astr):
import java.lang.String as JString
import org.python.core.PyString as PyString
tmpstr = JString(astr)
rtnstr = JString(tmpstr.getBytes(), "ISO8859_1")
return PyString(rtnstr)
def Start(*args):
print sys.path
for i in args:
t=ToPyString(i)
print t
def Stop(*args):
for i in args:
t=ToPyString(i)
print t
if __name__=='__main__':
print 'hello'
posted on 2008-02-14 14:28
zarra 閱讀(1116)
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