The following table describes the character encoding setting method defined in the Servlet specifications for each Servlet/JSP version:

Table 2-20 Character encoding setting method defined in the Servlet specifications (Servlet 2.5, 3.0/JSP 2.1)

Setting contents	Setting location	Setting method in the Servlet specifications
Character encoding of request	Servlet	ServletRequest.setCharacterEncoding(java.lang.String env)#1
	JSP files	None
Character encoding of response	Servlet	ServletResponse.setCharacterEncoding(java.lang.String charset)#1 ServletResponse.setContentType(java.lang.String type)#1 ServletResponse.setLocale(java.util.Locale loc)#1
	JSP files	contentType attribute value of the Page directive (including charset)#2 pageEncoding attribute of the Page directive#3 page-encoding element of web.xml#2
Character encoding of JSP file	JSP files	BOM#3 contentType attribute value of the Page directive (including charset)#2 pageEncoding attribute of the Page directive or Tag directive#3 page-encoding element of web.xml#2 encoding attribute of the XML declaration#4

#1

Package is javax.servlet.

#2

Method set up in the JSP page.

#3

Method set up in the JSP page or in the standard format tag file.

#4

Method set up in the JSP document or XML tag file.

Table 2-21 Character encoding setting method defined in the Servlet specifications (Servlet 2.4/JSP 2.0)

Setting contents	Setting location	Setting method in the Servlet specifications
Character encoding of request	Servlet	ServletRequest.setCharacterEncoding(java.lang.String env)#1
	JSP files	None
Character encoding of response	Servlet	ServletResponse.setCharacterEncoding(java.lang.String charset)#1 ServletResponse.setContentType(java.lang.String type)#1 ServletResponse.setLocale(java.util.Locale loc)#1
	JSP files	contentType attribute value of the Page directive (including charset)#2 pageEncoding attribute of the Page directive#3 page-encoding element of web.xml#2
Character encoding of JSP file	JSP files	contentType attribute value of the Page directive (including charset)#2 pageEncoding attribute of the Page directive or Tag directive#3 page-encoding element of web.xml#2 encoding attribute of the XML declaration#4

#1

Package is javax.servlet.

#2

Method set up in the JSP page.

#3

Method set up in the JSP page or in the standard format tag file.

#4

Method set up in the JSP document or XML tag file.

Table 2-22 Character encoding setting method defined in the Servlet specifications (Servlet 2.3/JSP 1.2)

Setting contents	Setting location	Setting method in the Servlet specifications
Character encoding of request	Servlet	ServletRequest.setCharacterEncoding(java.lang.String env)#1
	JSP files	None
Character encoding of response	Servlet	ServletResponse.setContentType(java.lang.String type)#1 ServletResponse.setLocale(java.util.Locale loc)#1
	JSP files	contentType attribute value of the Page directive (including charset)
Character encoding of JSP file	JSP files	contentType attribute value of the Page directive (including charset)#2 pageEncoding attribute of the Page directive#2

#1

Package is javax.servlet.

#2

Method set up in the JSP page or JSP document.

If the character encoding settings in the Servlet specifications and the default character encoding settings in Application Server do not exist, the character encoding defined in the Servlet specifications is applied.

When the character encoding is not specified, the following character encoding that are defined in the Servlet specifications will be applied:

• For a request
  ISO-8859-1 is applied. The character encoding is specified in the servlets and JSP files by using Servlet API.
  
• For a response
  The following table lists the character encoding defined in the Servlet specifications for each servlet version:
  

  Table 2-23 Character encoding defined in the Servlet specifications (Response)

  Servlet version	Types	Applied character encoding
  Servlet 2.3	Servlet	ISO-8859-1
  	JSP page
  	JSP document
  Servlet 2.4 or later	Servlet	ISO-8859-1
  	JSP page
  	JSP document	UTF-8

• In the case of JSP files
  The following table lists the character encoding defined in the Servlet specifications for each Servlet version:
  

  Table 2-24 Character encoding defined in the Servlet specifications (JSP file)

  Servlet version	JSP version	Types	Applied character encoding
  Servlet 2.3	JSP 1.2	JSP page	ISO-8859-1
  		JSP document
  Servlet 2.4 or later	JSP 2.0, 2.1	JSP page	ISO-8859-1
  		Standard format tag file
  		JSP document	UTF-8
  		XML tag file