Flow WMS未在我的地图openlayers中显示

Question

I want to display a flow WMS in my map openLayers but nothing display. Here how i declare my WMS :

var IGN = new ImageLayer({ source: new ImageWMS({ url: 'https://inspire.cadastre.gouv.fr/scpc/76758.wms?service=WMS&request=GetMap', params: {'LAYERS': 'AMORCES_CAD', 'FORMAT': 'image/png'}, ratio: 1, serverType: 'geoportail' }), visible : false, name : 'IGN' });

then when i declare my map in the layers :

layers: [baseLayer,Terrain,foncier2,satellite,IGN]

My URL WMS is wrong ? Or my statement is wrong ?

Thanks you in advance

PS : I work with OpenLayers 5

EDIT : I solve my problem, it was the wrong server.

Answer 1

It it had been the correct server were some problems with your code.

The url is longer than necessary, geoportail isn't a server type recognised by OpenLayers and visible : false will stop the layer displaying.

var IGN = new ImageLayer({
  source: new ImageWMS({
//    url: 'https://inspire.cadastre.gouv.fr/scpc/76758.wms?service=WMS&request=GetMap',
    url: 'https://inspire.cadastre.gouv.fr/scpc/76758.wms',
    params: {'LAYERS': 'AMORCES_CAD',
    'FORMAT': 'image/png'},
    ratio: 1,
//    serverType: 'geoportail'
  }),
//  visible : false,
  name : 'IGN'
});

But even with those changes I get an error from the server

Mauvaise Requête Taille de l'image invalide.

With a very small map it does work, but a tile layer works on any size map:

var IGN = new TileLayer({
  source: new TileWMS({
    url: 'https://inspire.cadastre.gouv.fr/scpc/76758.wms',
    params: {'LAYERS': 'AMORCES_CAD',
    'FORMAT': 'image/png'},
  }),
  name : 'IGN'
});