Express js从URL的根目录获取参数（不像req.params那么简单）

I've made an api and I've routed it as follows:

我做了一个api,我把它按如下方式排除:

In the main routes file:

在主路线文件中:

  //with sub-route
  app.use('/api/test/:test', require('./api/test'));

  //Without sub-route
  app.use('/api/test2/:test', function(req, res){
    console.log('in test', req.params, req.body);
    return res.status(200).json({params: req.params, body: req.body});
  });

Accessing the second route displays the :test in req.params, as expected.

访问第二个路径显示:req.params中的test,如预期的那样。

In the modular routes folder ('./api/test') I have a sub-router (index.js) which looks like this:

在模块化路由文件夹('./api/test')中,我有一个子路由器(index.js),如下所示:

router.get('/:test2', controller.getItem);

with a handler:

与处理程序:

exports.getItem = function getItem(req, res) {
  console.log('in getItem \nreq.params', req.params, '\nreq.body: ', req.body);
  return res.status(200).json({yes: 'yes', params: req.params, body: req.body});
};

So the first url, which has no sub-routing is: /api/test2/:test and logs out whatever you put in place of :test in req.params.

所以没有子路由的第一个url是:/ api / test2 /:test并注销你放置的任何东西:test in req.params。

The second url, which has sub-routing is: /api/test/:test/:test2, but when you send your get request only :test2 appears in req.params.

第二个url,其子路由是:/ api / test /:test /:test2,但是当你只发送你的get请求时:test2出现在req.params中。

It seems that if you use this pattern any variables in the 'root' of the route (ie in the primary router) are not picked up.

似乎如果你使用这种模式,路由的“根”中的任何变量(即在主路由器中)都不会被拾取。

Is there a way to fix this?

有没有办法来解决这个问题?

Thanks

1 个解决方案

#1

You will need a middleware to fix this for you:

您将需要一个中间件来为您解决此问题:

function paramFix(req, res, next) {
    req._params = req.params;
    next();
}
app.use('/api/test/:test', paramFix, require('./api/test'));

And then use req._params.test in your last callback function.

然后在上一个回调函数中使用req._params.test。

So reflect multiple levels of mounting you can extend your middleware like this:

因此,反映多个级别的安装,您可以像这样扩展您的中间件:

function paramFix(req, res, next) {
    req._params = req._params || {};
    for (var key in req.params) {
        if (req.params.hasOwnProperty(key)) {
            req._params[key] = req.params[key];
        }
    }
    next();
}
app.use('/api/test/:test', paramFix, require('./api/test'));

#1