Java平台对脚本语言支持之ScriptEngine创建方式

首先创建ScriptEngineManager

ScriptEngineManager sem = new ScriptEngineManager();

 然后通过ScriptEngineManager根据ScriptEngine信息创建相应的ScriptEngine

有三种方式可以创建ScriptEngine

getEngineByName(String shortName)
getEngineByExtension(String extension)
getEngineByMimeType(String mimeType) 

shortName就是我们所说的javascript,JavaScript之类的

extension就是我们所说的js

mimeType就是我们所说的text/javascript

可以通过如下方式获取相应的shortName,extension和mimeType

ScriptEngine engine = sem.getEngineByName("JavaScript");

//get types
List<String> types=engine.getFactory().getMimeTypes();
for(String type:types){
     System.out.println(String.format("type:%s", type));
}

//get names
List<String> names=engine.getFactory().getNames();
for(String name:names){
     System.out.println(String.format("name:%s", name));
}

//get extensions
List<String> extensions=engine.getFactory().getExtensions();
for(String extension:extensions){
     System.out.println(String.format("extension:%s", extension));
}

 输出如下：

type:application/javascript
type:application/ecmascript
type:text/javascript
type:text/ecmascript
name:js
name:rhino
name:JavaScript
name:javascript
name:ECMAScript
name:ecmascript
extension:js