如何获取Koa中"#“后面的URL信息

const Koa = require('koa');
const app = new Koa();

app.use(async (ctx, next) => {
  // 获取完整的URL，包括参数
  const fullUrl = ctx.request.URL.href;

  // 获取不包括参数的URL
  const urlWithoutQuery = ctx.request.URL.origin + ctx.request.URL.pathname;

  // 获取URL中的锚点信息
  const hash = ctx.request.URL.hash;

  // 获取锚点后面的URL信息
  const urlAfterHash = hash ? hash.substr(1) : '';

  // 打印获取到的URL信息
  console.log('Full URL:', fullUrl);
  console.log('URL without query:', urlWithoutQuery);
  console.log('Hash:', hash);
  console.log('URL after hash:', urlAfterHash);

  await next();
});

app.listen(3000, () => {
  console.log('Koa server is running on port 3000');
});