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Add set/getAcceptLanguage() to HttpHeaders

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Issue: SPR-15024
This commit is contained in:
Sebastien Deleuze
2016-12-15 17:16:20 +01:00
parent 8a7467020f
commit 9764d57433
2 changed files with 50 additions and 0 deletions
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33
spring-web/src/main/java/org/springframework/http/HttpHeaders.java
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@@ -20,6 +20,8 @@ import java.io.Serializable;
import java.net.InetSocketAddress;
import java.net.URI;
import java.nio.charset.Charset;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
@@ -37,6 +39,7 @@ import java.util.Set;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import org.springframework.util.Assert;
import org.springframework.util.LinkedCaseInsensitiveMap;
@@ -384,6 +387,8 @@ public class HttpHeaders implements MultiValueMap<String, String>, Serializable
*/
private static final Pattern ETAG_HEADER_VALUE_PATTERN = Pattern.compile("\\*|\\s*((W\\/)?(\"[^\"]*\"))\\s*,?");
private static final DecimalFormatSymbols DECIMAL_FORMAT_SYMBOLS = new DecimalFormatSymbols(Locale.ENGLISH);
private static TimeZone GMT = TimeZone.getTimeZone("GMT");
@@ -434,6 +439,34 @@ public class HttpHeaders implements MultiValueMap<String, String>, Serializable
return MediaType.parseMediaTypes(get(ACCEPT));
}
/**
* Set the acceptable language ranges,
* as specified by the {@literal Accept-Language} header.
* @see Locale.LanguageRange
*/
public void setAcceptLanguage(List<Locale.LanguageRange> languages) {
Assert.notNull(languages, "'languages' must not be null");
DecimalFormat df = new DecimalFormat("0.0", DECIMAL_FORMAT_SYMBOLS);
List<String> values = languages
.stream()
.map(r -> (r.getWeight() == Locale.LanguageRange.MAX_WEIGHT ? r.getRange() : r.getRange() + ";q=" + df.format(r.getWeight())))
.collect(Collectors.toList());
set(ACCEPT_LANGUAGE, toCommaDelimitedString(values));
}
/**
* Return the acceptable language ranges,
* as specified by the {@literal Accept-Language} header
* @see Locale.LanguageRange
*/
public List<Locale.LanguageRange> getAcceptLanguage() {
String value = getFirst(ACCEPT_LANGUAGE);
if (value != null) {
return Locale.LanguageRange.parse(value);
}
return Collections.emptyList();
}
/**
* Set the (new) value of the {@code Access-Control-Allow-Credentials} response header.
*/