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This Chapter
-Chapter 8: The Bean Tag Library
-The write Tag
-The cookie Tag
-The header Tag
-The parameter Tag
-The define Tag
-The page Tag
-The include Tag
-The message Tag
-The resource Tag
-The size Tag
-The struts Tag
-Summary

Table of Contents
-Introduction
-Chapter 1: Model 2 and Struts
-Chapter 2: Input Validation with Action Forms
-Chapter 3: The HTML Tag Library
-Chapter 4: Input Validation and Data Conversion
-Chapter 5: The Validator Plugin
-Chapter 6: The Expression Language
-Chapter 7: JSTL
-Chapter 8: The Bean Tag Library
-Chapter 9: The Logic Tag Library
-Chapter 10: Struts-EL, Nested, selectLabel
-Chapter 11: Message Handling and Internationalization
-Chapter 12: The Tiles Framework
-Chapter 13: Securing Struts Applications
-Chapter 14: The Config Object
-Chapter 15: The Persistence Layer
-Chapter 16: Object Caching
-Chapter 17: File Upload and File Download
-Chapter 18: Paging and Sorting
-Chapter 19: Preventing Double Submits
-Chapter 20: Early HttpSession Invalidation
-Chapter 21: Decorating Request Objects
-Chapter 22: How Struts Works

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The header Tag

The header tag is used to create a scoped variable that references the specified request header. The list of attribute for this tag is given in Table 8.4.

Attribute Description
id A required attribute that specifies the name of the scoped variable that will be created to reference the specified request header.
multiple The presence of this attribute in the header tag causes all matching headers to be included and their references stored into a scoped variable of type String[]. If this attribute is not present, the first value for the specified header will be retrieved as a value of type String.
name A required attribute that specifies the name of the request header to be referenced by the new scoped variable that will be created.
value The default value to use if no header with the specified name was found in this request.

Table 8.4: The header tag’s attributes

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