@ -1,5 +1,5 @@
@@ -1,5 +1,5 @@
/ *
* Copyright 2002 - 2013 the original author or authors .
* Copyright 2002 - 2015 the original author or authors .
*
* Licensed under the Apache License , Version 2 . 0 ( the "License" ) ;
* you may not use this file except in compliance with the License .
@ -20,6 +20,7 @@ import javax.servlet.ServletException;
@@ -20,6 +20,7 @@ import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest ;
import javax.servlet.http.HttpServletResponse ;
import org.springframework.util.ObjectUtils ;
import org.springframework.util.StringUtils ;
import org.springframework.web.servlet.LocaleResolver ;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter ;
@ -42,6 +43,8 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
@@ -42,6 +43,8 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
private String paramName = DEFAULT_PARAM_NAME ;
private String [ ] httpMethods ;
/ * *
* Set the name of the parameter that contains a locale specification
@ -59,6 +62,23 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
@@ -59,6 +62,23 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
return this . paramName ;
}
/ * *
* Configure the HTTP method ( s ) over which the locale can be changed .
* @param httpMethods the methods
* @since 4 . 2
* /
public void setHttpMethods ( String . . . httpMethods ) {
this . httpMethods = httpMethods ;
}
/ * *
* Return the configured HTTP methods .
* @since 4 . 2
* /
public String [ ] getHttpMethods ( ) {
return this . httpMethods ;
}
@Override
public boolean preHandle ( HttpServletRequest request , HttpServletResponse response , Object handler )
@ -66,14 +86,29 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
@@ -66,14 +86,29 @@ public class LocaleChangeInterceptor extends HandlerInterceptorAdapter {
String newLocale = request . getParameter ( this . paramName ) ;
if ( newLocale ! = null ) {
if ( checkHttpMethod ( request . getMethod ( ) ) ) {
LocaleResolver localeResolver = RequestContextUtils . getLocaleResolver ( request ) ;
if ( localeResolver = = null ) {
throw new IllegalStateException ( "No LocaleResolver found: not in a DispatcherServlet request?" ) ;
throw new IllegalStateException (
"No LocaleResolver found: not in a DispatcherServlet request?" ) ;
}
localeResolver . setLocale ( request , response , StringUtils . parseLocaleString ( newLocale ) ) ;
}
}
// Proceed in any case.
return true ;
}
private boolean checkHttpMethod ( String currentMethod ) {
if ( ObjectUtils . isEmpty ( getHttpMethods ( ) ) ) {
return true ;
}
for ( String httpMethod : getHttpMethods ( ) ) {
if ( httpMethod . equalsIgnoreCase ( currentMethod ) ) {
return true ;
}
}
return false ;
}
}