如何删除特定的数据mongodb + nodejs + expressjs

如何使用node + express删除数据。 这里是我的路由器删除过程

// Delete user router.get('/deleteuser/:id', function(req, res) { var db = req.db; var uid = req.params.id; db.collection('usercollection').remove(uid, function(err, result) { res.send( (result === 1) ? { msg: '' } : { msg: 'error: '+ err } ); }); }); 

从上面的函数中，我得到了404错误页面。

 Error: Not Found at Layer.app.use.res.render.message [as handle] (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/app.js:40:15) at trim_prefix (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:240:15) at /media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:208:9 at Function.proto.process_params (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:269:12) at next (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:199:19) at next (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:176:38) at /media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:137:5 at /media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:250:10 at next (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/index.js:160:14) at next_layer (/media/bcd44b6a-9c2e-4496-81da-b45d3c349c91/mywork/nodejs/blog/blogone/node_modules/express/lib/router/route.js:77:14) 

我的路由器代码有什么问题，请帮助我。 我是新来的节点和expression

Answer 1

终于我解决了这里的问题是我的代码：

  // Delete user router.get('/deleteuser/:id', function(req, res) { var db = req.db; var uid = req.params.id.toString(); var collection = db.get('usercollection'); collection.remove({"_id":uid}, function(err, result) { res.send( (result === 1) ? { msg: 'Deleted' } : { msg: 'error: '+ err } ); }); }); 

Answer 2

在里面：

 db.collection('usercollection').remove({"_id":uid},function(err,result){ ... }); 

尝试这个