.Net Core调用NodeJs

需求：在服务器端使用js渲染引擎arttemplate，生成HTML。以实现在后台配置模板，动态生成HTML

微软提供了Microsoft.AspNetCore.NodeServices这个库，专门用来调用nodejs服务

1、安装包Microsoft.AspNetCore.NodeServices、安装nodejs

2、在ConfigureServices方法中添加 services.AddNodeServices(); 

3、注入INodeServices服务,通过模板获取html

        public async Task<IActionResult> Index([FromServices]INodeServices nodeService)
        {
            //js模板
            var htmlTemplate = @"
            OrderID:{{model.ID}}<br>
            UserName:{{model.UserName}}<br>
            {{each model.OrderItems as item index}}
            {{item.OrderID}}-{{item.Price}}
            {{/each}}";
            //数据
            var orderModel = new Order { ID = 1, UserName = "fan", OrderItems = new List<OrderItem> { new OrderItem { OrderID = 1, Price = 10.00M }, new OrderItem { OrderID = 1, Price = 15.00M }, new OrderItem { OrderID = 1, Price = 13.00M } } };
            var orderJSON = JsonConvert.SerializeObject(orderModel);
            //获取html
            string html = await nodeService.InvokeAsync<string>("./nodejs_handler.js", htmlTemplate, orderJSON);

            return View();
        }

项目根目录添加nodejs_handler.js

const template = require('art-template');

module.exports = function (callback, htmlTemplate, dataJSON) {
    var compile = template.compile(htmlTemplate);
    var html = compile({ "model": JSON.parse(dataJSON)  });

    callback(null, html);
}

4、在项目根目录安装art-template的npm包

 npm install art-template 

5、完成，运行即可