如何在koa中通过router.verb()使用中间件

const Koa = require('koa');
const Router = require('@koa/router');

const app = new Koa();
const router = new Router();

// 自定义中间件示例
const loggerMiddleware = async (ctx, next) => {
  console.log(`${ctx.method} ${ctx.url}`);
  await next();
};

// 使用中间件的路由
router.get('/user/:id', loggerMiddleware, async (ctx) => {
  ctx.body = `Hello, user with id ${ctx.params.id}`;
});

router.post('/user', loggerMiddleware, async (ctx) => {
  // 假设这里处理POST请求的数据
  ctx.body = 'User created';
});

// 应用路由
app.use(router.routes()).use(router.allowedMethods());

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

const errorHandlingMiddleware = async (ctx, next) => {
  try {
    await next();
  } catch (err) {
    ctx.status = err.status || 500;
    ctx.body = err.message;
    ctx.app.emit('error', err, ctx); // 可以将错误事件发射到应用级别进行处理
  }
};

app.use(errorHandlingMiddleware);