node-web-mvc/dist/servlets/view/ViewRender.js

node spring mvc

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const ViewNotFoundError_1 = __importDefault(require("../../errors/ViewNotFoundError"));
const View_1 = __importDefault(require("./View"));
class ViewRender {
    constructor(viewResolverRegistry) {
        this.viewResolverRegistry = viewResolverRegistry;
    }
    async render(mv, servletContext) {
        const { request, response } = servletContext;
        if (response.headersSent) {
            // 如果前置流程已处理了返回
            return;
        }
        // 查找视图
        const view = this.resolveView(mv, servletContext);
        if (mv.status) {
            servletContext.response.setStatus(mv.status);
        }
        // 渲染视图
        return view.render(mv.model, request, response);
    }
    resolveView(mv, servletContext) {
        const { request } = servletContext;
        const viewResolvers = this.viewResolverRegistry.viewResolvers;
        if (mv.view instanceof View_1.default) {
            return mv.view;
        }
        for (const resolver of viewResolvers) {
            const view = resolver.resolveViewName(mv.view, mv.model, request);
            if (view) {
                return view;
            }
        }
        // 如果没有查到视图，则抛出异常
        throw new ViewNotFoundError_1.default(mv.view || '\'\'');
    }
}
exports.default = ViewRender;