C# 执行js

原文链接：https://www.cnblogs.com/Ehtan/p/4361986.html#undefined

添加COM引用: Microsoft Script Control 1.0

1、添加帮助类

using MSScriptControl;
using System;
using System.IO;

namespace Javascript
{
    /// <summary>
    /// JavascriptHelper
    /// </summary>
    public class JavascriptHelper
    {
        /// <summary>
        /// ScriptControl
        /// </summary>
        private ScriptControl jsControl = null;

        /// <summary>
        /// 构造方法
        /// </summary>
        public JavascriptHelper()
        {
            this.jsControl = new ScriptControl();
            this.jsControl.UseSafeSubset = true;
            this.jsControl.Language = "JScript";
        }

        /// <summary>
        /// 添加js文件
        /// </summary>
        /// <param name="filePath">js文件路径</param>
        public void AddJavaScriptFile(string filePath)
        {
            if (!File.Exists(filePath))
            {
                throw new Exception("文件" + filePath + "不存在。");
            }

            string jsCode = File.ReadAllText(filePath);
            this.jsControl.AddCode(jsCode);
        }

        /// <summary>
        /// 添加js代码
        /// </summary>
        /// <param name="jsCode">js代码</param>
        public void AddJavascriptCode(string jsCode)
        {
            this.jsControl.AddCode(jsCode);
        }

        /// <summary>
        /// 执行js
        /// </summary>
        /// <param name="method">方法名</param>
        /// <returns>结果</returns>
        public dynamic Excecute(string method)
        {
            return this.jsControl.Eval(method);
        }
    }
}

　　

2、测试代码

using System;
using System.IO;

namespace Javascript
{
    public class Program
    {
        public static void Main(string[] args)
        {
            string plantext = "123456";
            string ciphertext = Rsa(plantext);
            Console.WriteLine(ciphertext);
            Console.ReadLine();
        }

        /// <summary>
        /// rsa加密算法
        /// </summary>
        /// <param name="plantext">明文</param>
        /// <returns>密文</returns>
        private static string Rsa(string plantext)
        {
            JavascriptHelper jsHelper = new JavascriptHelper();
            AddJSFile(jsHelper);
            string method = string.Format("encrypt('{0}');", plantext);
            string ciphertext = jsHelper.Excecute(method).ToString();
            return ciphertext;
        }

        /// <summary>
        /// 添加js文件
        /// </summary>
        /// <param name="jsHelper">JavascriptHelper</param>
        private static void AddJSFile(JavascriptHelper jsHelper)
        {
            string path = string.Empty;
            path = AppDomain.CurrentDomain.BaseDirectory + @"jssecurity.js";
            jsHelper.AddJavaScriptFile(path);

            path = AppDomain.CurrentDomain.BaseDirectory + @"js
sa.js";
            jsHelper.AddJavaScriptFile(path);
        }
    }
}