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3.1. Fundamentos

This section describes concepts and parameters mutually shared by services. Some of these are standard and defined in OGC specifications while others are very specific to QGIS Server.

Conceitos padrão:

Conceito

Descrição

SERVICE

Nome do serviço

REQUEST

Nome da requisição

Conceitos de fornecedor:

Conceito

Descrição

MAP

arquivo de projeto QGIS

FILE_NAME

Nome do arquivo do arquivo baixado

Nome curto

Definição de nome curto

3.1.1. SERVICE

This standard parameter allows to specify the name of the service to use for a specific request and has to be formed like SERVICE=NAME.

URL example for the WMS service:

http://localhost/qgisserver?
SERVICE=WMS
&...

Nota

Not available for REST based services like WFS3 (OGC API Features).

3.1.2. REQUEST

This standard parameter allows to specify the name of the request to execute for a specific service and has to be formed like REQUEST=RequestName.

URL example for the GetCapabilities request:

http://localhost/qgisserver?
REQUEST=GetCapabilities
&...

Nota

Not available for REST based services like WFS3 (OGC API Features).

3.1.3. MAP

This vendor parameter allows to define the QGIS project file to use. It may be an absolute path or a path relative to the location of the server executable qgis_mapserv.fcgi. MAP is mandatory by default because a request needs a QGIS project to actually work. However, the QGIS_PROJECT_FILE environment variable may be used to define a default QGIS project. In this specific case, MAP is no longer a required parameter. For further information you may refer to the Configuração avançada chapter.

Exemplo de URL:

http://localhost/qgisserver?
MAP=/tmp/QGIS-Training-Data/exercise_data/qgis-server-tutorial-data/world.qgs
&...

3.1.4. FILE_NAME

Se este parâmetro do fornecedor for definido, a resposta do servidor será enviada ao cliente como um anexo de arquivo com o nome do arquivo especificado.

URL example to save an XML GetCapabilities document:

http://localhost/qgisserver?
SERVICE=WMS
&REQUEST=GetCapabilities
&FILE_NAME=wms_capabilities.xml
&...

Nota

Not available for REST based services like WFS3 (OGC API Features).

3.1.5. Nome curto

A number of elements have both a short name and a title. The short name is a text string used for machine-to-machine communication while the title is for the benefit of humans. For example, a dataset might have the descriptive title “Maximum Atmospheric Temperature” and be requested using the abbreviated short name “ATMAX”. You can set title, short name and abstract for:

  • Layers: right-click on a layer and choose Properties… ► QGIS Server ► Description.

  • Groups: right-click on a group and select Set Group WMS data

  • Project: go to Project ► Properties… ► QGIS Server ► Service Capabilities.

../../../_images/set_group_wms_data.png

Fig. 3.1 Set group WMS data dialog

Assim, o nome abreviado pode ser usado para identificar esses itens ao interagir com o Servidor QGIS. Por exemplo, com o parâmetro padrão CAMADAS:

http://localhost/qgisserver?
SERVICE=WMS
&REQUEST=GetMap
&LAYERS=shortname1,shortname2
&...