forgeplus-react/server/render.js

import React from "react";
import {renderToString} from "react-dom/server";
import {StaticRouter, matchPath} from "react-router-dom";

import Routes, { deepRoutes } from "../Routes";
import { Provider } from "react-redux";
import { serverStore } from "../src/redux/stores/configureStore";
import App from "../src/App";
import { Route } from 'react-router-dom';
import { setDefaultMeta } from '../src/common/UrlTool'
import Logger from "./log";

export const render = async (req,res)=>{
  let _route = null,
  _match = null;
  Logger.info(`${req.url}   UA:${req.headers['user-agent']}`)

  let store = serverStore();

  function matchSubRoutes(routes, url) {
    for (const route of routes) {
      // 检查当前路由是否匹配
      let match = matchPath(url, route.path);
      if (match) {
        // 如果当前路由匹配，并且它有子路由，递归检查子路由
        if (route.routes) {
          // 递归调用匹配子路由
          const subMatch = matchSubRoutes(route.routes, url);
          if (subMatch) {
            _route = route;
            _match = subMatch;
            return true;
          }
        }
        // 如果没有子路由，或者子路由不匹配，但当前路由匹配，返回当前路由
        _route = route;
        _match = match;
        return true;
      }
    }
    // 如果没有找到匹配的路由，返回false
    return false;
  }

  matchSubRoutes(deepRoutes, req.url.split("?")[0])

  let context = {
    code: 200,
  };


  if (_route && _route.component && _route.component.preFetch) {
    context = await _route.component.preFetch({
      store,
      match: _match,
      query: req.path,
    });
  }

  const content = renderToString((
    <Provider store={store}>
      <StaticRouter location={req.path} context={context}>
        <Route path='/:owner/:projectsId' exact component={App}></Route>
      </StaticRouter>
    </Provider>
  ))

  if (!content) {
    // 未匹配到详情页恢复默认header
    setDefaultMeta()
  } else {
    // 匹配到服务端渲染页面注入state
    let script = domObj.window.document.getElementById('initState')
    if (!script) {
      script = domObj.window.document.createElement('script')
      script.setAttribute('id', 'initState')
    }
    script.textContent = `window.__initState__ = ${ JSON.stringify(store.getState()) }`
    
    domObj.window.document.head.appendChild(script);
  }


  let html = domObj.serialize()

  const prepHTML=(data,rootString)=>{
    data=data.replace('<div id="root" class="page -layout-v -fit widthunit"></div>',`<div id="root" class="page -layout-v -fit widthunit">${rootString}</div>`);
    return data;
  }
  res.send(prepHTML(html, content))

  store = null
}