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MVC -- Model |
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Subject: MVC -- Model
Author: WebSpider
In response to: MVC -- View
Posted on: 11/23/2017 02:38:12 AM
Controller method's arguments:
Request or response objects: ServletRequest, HttpServletRequest
Session object: HttpSession
org.springframework.web.context.request.WebRequest
java.util.Locale
java.io.InputStream / java.io.Reader
java.io.OutputStream / java.io.Writer
java.security.Principal
@PathVariable annotated parameters for access to URI template variables
@RequestParam annotated parameters for access to specific Servlet request parameters
@RequestHeader annotated parameters for access to specific Servlet request HTTP headers
@RequestBody annotated parameters for access to the HTTP request body
java.util.Map / org.springframework.ui.Model / org.springframework.ui.ModelMap
org.springframework.validation.Errors / org.springframework.validation.BindingResult validation results for a preceding command
org.springframework.web.bind.support.SessionStatus status handle for marking form processing as complete, which triggers the cleanup of session attributes that have been indicated by the @SessionAttributes annotation at the handler type level.
Controller method's return types:
ModelAndView, Model, Map, View
String
void -- if the method handles the response itself (by writing the response content directly, declaring an argument of type ServletResponse / HttpServletResponse for that purpose) or if the view name is supposed to be implicitly determined through a RequestToViewNameTranslator (not declaring a response argument in the handler method signature).
HttpEntity<?> or ResponseEntity<?> -- to provide access to the Servlet reponse HTTP headers and contents
Any other return type is considered to be a single model attribute to be exposed to the view, using the attribute name specified through @ModelAttribute at the method level
>
> On 11/23/2017 02:36:50 AM WebSpider wrote:
home.jsp
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<html>
<head>
<title>Home</title>
</head>
<body>
<h1>Hello world!</h1>
<P>The time on the server is ${serverTime}.</P>
</body>
</html>
References:
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