java util - 在java代码中执行javascript代码工具 rhino-1.7.7.jar

Posted 2020-08-28 ~~逍遥~~

 

需要 rhino-1.7.7.jar 包

代码示例：

package cn.java.mozilla.javascript;

import org.mozilla.javascript.Context;
import org.mozilla.javascript.Scriptable;

public class Test {

    public static void main(String[] args) {
        test4JsNormalCode();
        test4JsObj();
        test4JsFunc();
        test4JsFuncWithParam();
    }
    
    protected static void test4JsNormalCode() {
        Context ctx = Context.enter();
        Scriptable scope = ctx.initStandardObjects();

        String jsStr = "100*20/10";
        Object result = ctx.evaluateString(scope, jsStr, null, 0, null);
        System.out.println("result=" + result);
    }
    
    protected static void test4JsObj() {
        Context ctx = Context.enter();
        Scriptable scope = ctx.initStandardObjects();
        
        String jsStr = "var objTest = { ‘key1‘:‘value1‘ }; objTest.key1;";
        Object result = ctx.evaluateString(scope, jsStr, null, 0, null);
        System.out.println("result=" + result);
    }
    
    protected static void test4JsFunc() {
        Context ctx = Context.enter();
        Scriptable scope = ctx.initStandardObjects();
        String jsStr = "var testFunc = function(){ return ‘testFunc...‘ }; testFunc();";
        Object result = ctx.evaluateString(scope, jsStr, null, 0, null);
        System.out.println("result=" + result);
    }
    
    protected static void test4JsFuncWithParam() {
        Context ctx = Context.enter();
        Scriptable scope = ctx.initStandardObjects();
        scope.put("param1", scope, "value1");
        String jsStr = "var testFunc = function(param){ return ‘testFunc...‘+‘param=‘+param }; testFunc(param1);";
        Object result = ctx.evaluateString(scope, jsStr, null, 0, null);
        System.out.println("result=" + result);
    }

}

输出结果

result=200
result=value1
result=testFunc...
result=testFunc...param=value1