What are the built-in objects of gsp?

gsp built-in objects include request, response, session, application, flash, params, out, codec, grailsApplication, tagLib, etc. Detailed introduction: 1. request: represents the HTTP request object, which can obtain the request parameters, header information, etc.; 2. response: represents the HTTP response object, and can set the response status code, header information, etc.; 3. session, etc.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

GSP (Groovy Server Pages) is a template engine for building dynamic Web pages, which is based on the Groovy language. In GSP, there are some built-in objects that can be used directly in templates. The following are some common GSP built-in objects:

request: Represents the HTTP request object, which can obtain the request parameters, header information, etc.

response: Represents the HTTP response object, and can set the response status code, header information, etc.

session: Represents a session object that can share data between different requests.

application: Represents an application object that can share data throughout the application.

flash: Represents a flash memory object used to pass temporary data between requests.

params: Represents the request parameter object, and can obtain the parameter value in the request.

out: Represents the output object, used to output content to the page.

codec: Represents the codec object, which can perform encoding and decoding operations.

grailsApplication: Represents the Grails application object and can obtain the application's configuration information and other related information.

tagLib: Represents a tag library object, used to call tags defined in a custom tag library.

These built-in objects can be used directly in GSP templates without additional introduction or definition. By using these built-in objects, you can easily access request and response information, shared data, output content, etc., to build dynamic Web pages. It should be noted that these built-in objects may be slightly different in different Groovy frameworks or versions. The specific built-in objects need to be determined according to the framework and version used.

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