JSFページで使用される文字エンコーディングをできるだけ集中化したいと考えています。
WEB-INFフォルダーの下に、2 つのプロジェクト構成ファイルがあります。1 つは開発環境用 ( projectDEV.properties と呼ばれます) で、もう 1 つは実稼働環境用 ( projectPRO.propertiesと呼ばれます) です。
適切なバンドルは、次の方法でSpringによって正しくロードされます。
<context:property-placeholder
location="WEB-INF/project${my.environment}.properties" />
...ここで、' my.environment ' はTomcat 起動構成パラメーターです。
-Dmy.environment=PRO or -Dmy.environment=DEV
この 2 つのプロパティ ファイルには、次のプロパティ宣言があります。
cfg.i18n.encoding1=UTF-8
そして、ここに質問があります：
.xhtml ページ内でそのプロパティを使用するにはどうすればよいですか?
<?xml version="1.0" encoding="${cfg.i18n.encoding}" ?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<f:view contentType="text/html">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=${cfg.i18n.encoding}" />
<title>Home</title>
</h:head>
<h:body>
HELLO!
</h:body>
</f:view>
</html>
ありがとう！
/**
* Servlet 2.3/2.4 Filter that allows one to specify a character encoding for
* requests. This is useful because current browsers typically do not set a
* character encoding even if specified in the HTML page or form.
*
* <p>This filter can either apply its encoding if the request does not
* already specify an encoding, or enforce this filter's encoding in any case
* ("forceEncoding"="true"). In the latter case, the encoding will also be
* applied as default response encoding on Servlet 2.4+ containers (although
* this will usually be overridden by a full content type set in the view).
*
* @author Juergen Hoeller
* @since 15.03.2004
* @see #setEncoding
* @see #setForceEncoding
* @see javax.servlet.http.HttpServletRequest#setCharacterEncoding
* @see javax.servlet.http.HttpServletResponse#setCharacterEncoding
*/
public class CharacterEncodingFilter extends OncePerRequestFilter {
private String encoding;
private boolean forceEncoding = false;
/**
* Set the encoding to use for requests. This encoding will be passed into a
* {@link javax.servlet.http.HttpServletRequest#setCharacterEncoding} call.
* <p>Whether this encoding will override existing request encodings
* (and whether it will be applied as default response encoding as well)
* depends on the {@link #setForceEncoding "forceEncoding"} flag.
*/
public void setEncoding(String encoding) {
this.encoding = encoding;
}
/**
* Set whether the configured {@link #setEncoding encoding} of this filter
* is supposed to override existing request and response encodings.
* <p>Default is "false", i.e. do not modify the encoding if
* {@link javax.servlet.http.HttpServletRequest#getCharacterEncoding()}
* returns a non-null value. Switch this to "true" to enforce the specified
* encoding in any case, applying it as default response encoding as well.
* <p>Note that the response encoding will only be set on Servlet 2.4+
* containers, since Servlet 2.3 did not provide a facility for setting
* a default response encoding.
*/
public void setForceEncoding(boolean forceEncoding) {
this.forceEncoding = forceEncoding;
}
@Override
protected void doFilterInternal(
HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
if (this.encoding != null && (this.forceEncoding || request.getCharacterEncoding() == null)) {
request.setCharacterEncoding(this.encoding);
if (this.forceEncoding) {
response.setCharacterEncoding(this.encoding);
}
}
filterChain.doFilter(request, response);
}
}