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Rhino 表达式执行引擎

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lzpeng723
2020-11-17 23:52:16 +08:00
parent 9ca25e26d6
commit bc896bf8ef
5 changed files with 71 additions and 1 deletions
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41
hutool-extra/src/main/java/cn/hutool/extra/expression/engine/rhino/RhinoEngine.java Normal file
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@@ -0,0 +1,41 @@
package cn.hutool.extra.expression.engine.rhino;
import cn.hutool.extra.expression.ExpressionEngine;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import java.util.Map;
/**
* rhino引擎封装<br>
* 见：https://github.com/mozilla/rhino
*
* @since 5.5.2
* @author lzpeng
*/
public class RhinoEngine implements ExpressionEngine {
/**
* 构造
*/
public RhinoEngine(){
}
@Override
public Object eval(String expression, Map<String, Object> context) {
Context ctx = Context.enter();
Scriptable scope = ctx.initStandardObjects();
if (context != null && !context.isEmpty()) {
for (Map.Entry<String, Object> entry : context.entrySet()) {
// 将java对象转为js对象
Object jsObj = Context.javaToJS(entry.getValue(), scope);
// 将java对象放置JS的作用域中
ScriptableObject.putProperty(scope, entry.getKey(), jsObj);
}
}
Object result = ctx.evaluateString(scope, expression, "rhino.js", 1, null);
Context.exit();
return result;
}
}

7
hutool-extra/src/main/java/cn/hutool/extra/expression/engine/rhino/package-info.java Normal file
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/**
* rhino引擎封装<br>
* 见：https://github.com/mozilla/rhino
*
* @author lzpeng
*/
package cn.hutool.extra.expression.engine.rhino;

3
hutool-extra/src/main/resources/META-INF/services/cn.hutool.extra.expression.ExpressionEngine
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@@ -2,4 +2,5 @@ cn.hutool.extra.expression.engine.aviator.AviatorEngine
cn.hutool.extra.expression.engine.jexl.JexlEngine
cn.hutool.extra.expression.engine.mvel.MvelEngine
cn.hutool.extra.expression.engine.jfireel.JfireELEngine
cn.hutool.extra.expression.engine.spel.SpELEngine
cn.hutool.extra.expression.engine.spel.SpELEngine
cn.hutool.extra.expression.engine.rhino.RhinoEngine