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public interface RequestDataValueProcessor
A contract for inspecting and potentially modifying request data values such as URL query parameters or form field values before they are rendered by a view or before a redirect.
Implementations may use this contract for example as part of a solution to provide data integrity, confidentiality, protection against cross-site request forgery (CSRF), and others or for other tasks such as automatically adding a hidden field to all forms and URLs.
View technologies that support this contract can obtain an instance to
delegate to via RequestContext.getRequestDataValueProcessor()
.
Method Summary | |
---|---|
java.util.Map<java.lang.String,java.lang.String> |
getExtraHiddenFields(HttpServletRequest request)
Invoked after all form fields have been rendered. |
java.lang.String |
processAction(HttpServletRequest request,
java.lang.String action)
Invoked when a new form action is rendered. |
java.lang.String |
processFormFieldValue(HttpServletRequest request,
java.lang.String name,
java.lang.String value,
java.lang.String type)
Invoked when a form field value is rendered. |
java.lang.String |
processUrl(HttpServletRequest request,
java.lang.String url)
Invoked when a URL is about to be rendered or redirected to. |
Method Detail |
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java.lang.String processAction(HttpServletRequest request, java.lang.String action)
request
- the current requestaction
- the form action
java.lang.String processFormFieldValue(HttpServletRequest request, java.lang.String name, java.lang.String value, java.lang.String type)
request
- the current requestname
- the form field namevalue
- the form field valuetype
- the form field type ("text", "hidden", etc.)
java.util.Map<java.lang.String,java.lang.String> getExtraHiddenFields(HttpServletRequest request)
request
- the current request
null
java.lang.String processUrl(HttpServletRequest request, java.lang.String url)
request
- the current requesturl
- the URL value
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