LocaleURLFilter detects locale at the start of the requested URL

src/main/java/org/genesys2/server/servlet/controller/HtmlController.java

@@ -16,6 +16,8 @@
 
 package org.genesys2.server.servlet.controller;
 
+import java.util.Locale;
+
 import javax.servlet.http.HttpServletRequest;
 
 import org.genesys2.server.model.UserRole;
@@ -27,6 +29,7 @@ import org.genesys2.server.service.EMailVerificationService;
 import org.genesys2.server.service.OrganizationService;
 import org.genesys2.server.service.StatisticsService;
 import org.genesys2.server.service.UserService;
+import org.genesys2.server.servlet.filter.LocaleURLFilter;
 import org.genesys2.util.ReCaptchaUtil;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -78,7 +81,17 @@ public class HtmlController extends BaseController {
 	private OrganizationService organizationService;
 
 	@RequestMapping("/")
-	public String index() {
+	public String index(HttpServletRequest request) {
+
+		Locale requestLocale = request.getLocale();
+		Locale requestedLocale = (Locale) request.getAttribute(LocaleURLFilter.REQUEST_LOCALE_ATTR);
+		System.err.println("Request locale: " + requestLocale + " detected: " + requestedLocale);
+
+		if (requestedLocale == null && requestLocale != null) {
+			System.err.println("redirecting!");
+			return "redirect:/" + requestLocale.getLanguage() + "/welcome";
+		}
+
 		return "redirect:/welcome";
 	}
 

src/main/java/org/genesys2/server/servlet/filter/LocaleURLFilter.java

+package org.genesys2.server.servlet.filter;
+
+import java.io.IOException;
+import java.util.Enumeration;
+import java.util.Locale;
+import java.util.regex.Matcher;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.lang.StringUtils;
+import org.apache.log4j.Logger;
+
+public class LocaleURLFilter implements Filter {
+	private static final Logger LOG = Logger.getLogger(LocaleURLFilter.class);
+
+	private static final LocaleURLMatcher localeUrlMatcher = new LocaleURLMatcher();
+	public static final String REQUEST_LOCALE_ATTR = LocaleURLFilter.class.getName() + ".LOCALE";
+	private static final String REQUEST_INTERNAL_URL = LocaleURLFilter.class.getName() + ".INTERNALURL";
+
+	@Override
+	public void init(FilterConfig filterConfig) throws ServletException {
+		String excludePaths = filterConfig.getInitParameter("excludePaths");
+		if (StringUtils.isNotBlank(excludePaths)) {
+			LOG.info("Excluding paths: " + excludePaths);
+			String[] ex = excludePaths.split("\\s+");
+			for (String e : ex) {
+				LOG.info("Excluding path: " + e);
+			}
+			localeUrlMatcher.setExcludedPaths(ex);
+		}
+	}
+
+	@Override
+	public void destroy() {
+		if (LOG.isDebugEnabled()) {
+			LOG.debug("Destroying LocaleURLFilter");
+		}
+	}
+
+	@Override
+	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
+		final HttpServletRequest request = (HttpServletRequest) servletRequest;
+		final String url = request.getRequestURI().substring(request.getContextPath().length());
+
+		if (localeUrlMatcher.isExcludedPath(url)) {
+			filterChain.doFilter(servletRequest, servletResponse);
+			return;
+		}
+
+		if (LOG.isDebugEnabled()) {
+			LOG.debug("Incoming URL: " + url);
+		}
+
+		final Matcher matcher = localeUrlMatcher.matcher(url);
+		if (matcher.matches()) {
+			String urlLanguage = matcher.group(1);
+			String remainingUrl = matcher.group(2);
+
+			Locale urlLocale = Locale.forLanguageTag(urlLanguage);
+			request.setAttribute(REQUEST_LOCALE_ATTR, urlLocale);
+			request.setAttribute(REQUEST_INTERNAL_URL, getInternalUrl(remainingUrl, request.getQueryString()));
+
+			if (LOG.isDebugEnabled()) {
+				LOG.debug("URL matches! lang=" + urlLanguage + " remaining=" + remainingUrl);
+				LOG.debug("Country: " + urlLocale.getCountry() + " Lang: " + urlLocale.getLanguage() + " locale=" + urlLocale);
+			}
+
+			Enumeration<String> attrNames = request.getAttributeNames();
+			while (attrNames.hasMoreElements()) {
+				String attrName = attrNames.nextElement();
+				LOG.info("Request attr " + attrName + " = " + request.getAttribute(attrName));
+			}
+
+			LocaleWrappedServletResponse localeResponse = new LocaleWrappedServletResponse((HttpServletResponse) servletResponse, localeUrlMatcher, urlLanguage);
+			LocaleWrappedServletRequest localeRequest = new LocaleWrappedServletRequest((HttpServletRequest) servletRequest, url, remainingUrl);
+
+			LOG.info("Proxying request to remaining URL " + remainingUrl);
+			// request.getRequestDispatcher(remainingUrl == null ? "/" :
+			// remainingUrl).forward(servletRequest, localeResponse);
+			filterChain.doFilter(localeRequest, localeResponse);
+		} else {
+			if (LOG.isDebugEnabled()) {
+				LOG.debug("No match on url " + url);
+			}
+			request.setAttribute(REQUEST_INTERNAL_URL, getInternalUrl(url, request.getQueryString()));
+			filterChain.doFilter(servletRequest, servletResponse);
+		}
+	}
+
+	private String getInternalUrl(String url, String queryString) {
+		if (StringUtils.isBlank(queryString))
+			return url;
+		else
+			return url + "?" + queryString;
+	}
+
+}

src/main/java/org/genesys2/server/servlet/filter/LocaleURLMatcher.java

+package org.genesys2.server.servlet.filter;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.log4j.Logger;
+
+public class LocaleURLMatcher {
+	private static final Logger LOG = Logger.getLogger(LocaleURLMatcher.class);
+	private static final Pattern localePattern = Pattern.compile("^/([a-z]{2}(?:\\-[a-z]{2})?)(/.*)");
+	private String[] excludedPaths;
+
+	public void setExcludedPaths(String[] excludedPaths) {
+		this.excludedPaths = excludedPaths;
+	}
+
+	public boolean isExcludedPath(String url) {
+		for (String excludedPath : excludedPaths) {
+			if (url.startsWith(excludedPath)) {
+				if (LOG.isDebugEnabled()) {
+					LOG.debug("Excluded: " + excludedPath + " matches " + url);
+				}
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	public boolean isExcluded(String url) {
+		for (String excludedPath : excludedPaths) {
+			if (url.startsWith(excludedPath)) {
+				if (LOG.isDebugEnabled()) {
+					LOG.debug("Excluded: " + excludedPath + " matches " + url);
+				}
+				return true;
+			}
+		}
+
+		// if (localePattern.matcher(url).matches()) {
+		// LOG.info("Excluding locale-URL " + url);
+		// return true;
+		// }
+		if (fastCheck(url)) {
+			return true;
+		}
+
+		return false;
+	}
+
+	private boolean fastCheck(String url) {
+		char[] dst = new char[7];
+		url.getChars(0, Math.min(url.length(), 7), dst, 0);
+		
+		// Check language
+		if (dst[0] != '/')
+			return false;
+		if (dst[1] < 'a' || dst[1] > 'z')
+			return false;
+		if (dst[2] < 'a' || dst[2] > 'z')
+			return false;
+
+		// end processing
+		if (dst[3] == '/')
+			return true;
+
+		// Check country
+		if (dst[3] != '-')
+			return false;
+		if (dst[4] < 'a' || dst[4] > 'z')
+			return false;
+		if (dst[5] < 'a' || dst[5] > 'z')
+			return false;
+
+		if (dst[6] != '/')
+			return false;
+
+		return true;
+	}
+
+	public Matcher matcher(String url) {
+		return localePattern.matcher(url);
+	}
+
+}

src/main/java/org/genesys2/server/servlet/filter/LocaleWrappedServletRequest.java

+package org.genesys2.server.servlet.filter;
+
+import java.io.IOException;
+import java.util.Collection;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletRequestWrapper;
+import javax.servlet.http.Part;
+
+import org.apache.log4j.Logger;
+
+public class LocaleWrappedServletRequest extends HttpServletRequestWrapper {
+	private static final Logger LOG = Logger.getLogger(LocaleWrappedServletRequest.class);
+
+	private final String remainingUrl;
+
+	private String originalUrl;
+
+	public LocaleWrappedServletRequest(HttpServletRequest request, String originalUrl, String remainingUrl) {
+		super(request);
+		this.originalUrl = originalUrl;
+		this.remainingUrl = remainingUrl;
+	}
+
+	@Override
+	public String getServletPath() {
+		String servletPath = super.getServletPath();
+		if (this.originalUrl.equals(servletPath)) {
+			if (LOG.isDebugEnabled())
+				LOG.debug("servletPath: " + servletPath + " remaining: " + remainingUrl);
+			return remainingUrl;
+		}
+		return servletPath;
+	}
+
+	@Override
+	public String getRequestURI() {
+		String requestURI = super.getRequestURI();
+		if (this.originalUrl.equals(requestURI)) {
+			if (LOG.isDebugEnabled())
+				LOG.debug("requestURI: " + requestURI + " remaining=" + remainingUrl);
+			return remainingUrl;
+		}
+		return requestURI;
+	}
+
+	@Override
+	public StringBuffer getRequestURL() {
+		StringBuffer requestURL = super.getRequestURL();
+		// LOG.info("requestURL: " + requestURL);
+		return requestURL;
+	}
+}

src/main/java/org/genesys2/server/servlet/filter/LocaleWrappedServletResponse.java

+package org.genesys2.server.servlet.filter;
+
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletResponseWrapper;
+
+import org.apache.log4j.Logger;
+
+public class LocaleWrappedServletResponse extends HttpServletResponseWrapper {
+	private static final Logger LOG = Logger.getLogger(LocaleWrappedServletResponse.class);
+
+	private String prefix;
+
+	private LocaleURLMatcher localeUrlMatcher;
+
+	public LocaleWrappedServletResponse(HttpServletResponse response, LocaleURLMatcher localeUrlMatcher, String urlLanguage) {
+		super(response);
+		this.localeUrlMatcher = localeUrlMatcher;
+		this.prefix = updatePrefix(urlLanguage);
+	}
+
+	private boolean isExcluded(String url) {
+		// Exclude querystring-only urls
+		return url.startsWith("?") || localeUrlMatcher.isExcluded(url);
+	}
+
+	@Override
+	public String encodeURL(String url) {
+		if (isExcluded(url)) {
+			if (url.startsWith("/en/")) {
+				return super.encodeURL(url.substring(3));
+			}
+			return super.encodeURL(url);
+		} else {
+			String encodedURL = prefix + super.encodeURL(url);
+			LOG.info("encodeURL " + url + " to " + encodedURL);
+			return encodedURL;
+		}
+	}
+
+	@Override
+	@Deprecated
+	public String encodeUrl(String url) {
+		if (isExcluded(url)) {
+			return super.encodeUrl(url);
+		} else {
+			String encodedURL = prefix + super.encodeUrl(url);
+			LOG.info("encodeUrl " + url + " to " + encodedURL);
+			return encodedURL;
+		}
+	}
+
+	@Override
+	public String encodeRedirectURL(String url) {
+		if (isExcluded(url)) {
+			return super.encodeRedirectURL(url);
+		} else {
+			String encodedURL = prefix + super.encodeRedirectURL(url);
+			LOG.info("encodeRedirectURL " + url + " to " + encodedURL);
+			return encodedURL;
+		}
+	}
+
+	@Override
+	@Deprecated
+	public String encodeRedirectUrl(String url) {
+		if (isExcluded(url)) {
+			return super.encodeRedirectUrl(url);
+		} else {
+			String encodedURL = prefix + super.encodeRedirectUrl(url);
+			LOG.info("encodeRedirectUrl " + url + " to " + encodedURL);
+			return encodedURL;
+		}
+	}
+
+	private String updatePrefix(String language) {
+		if (language == null || language.length() != 2) {
+			language = null;
+		}
+
+		if (language == null) {
+			return "";
+		} else {
+			return "/" + language;
+		}
+	}
+}

src/main/java/org/genesys2/spring/BetterSessionLocaleResolver.java → src/main/java/org/genesys2/spring/RequestAttributeLocaleResolver.java

@@ -32,72 +32,54 @@
 
 package org.genesys2.spring;
 
-import java.util.HashSet;
 import java.util.Locale;
-import java.util.Set;
 
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 
-import org.springframework.web.servlet.i18n.SessionLocaleResolver;
+import org.genesys2.server.servlet.filter.LocaleURLFilter;
+import org.springframework.web.servlet.LocaleResolver;
 
 /**
  * Implementation of LocaleResolver that uses a locale attribute in the user's
  * session in case of a custom setting, with a fallback to the specified default
  * locale or the request's accept-header locale.
- *
+ * 
  * <p>
  * This is most appropriate if the application needs user sessions anyway, that
  * is, when the HttpSession does not have to be created for the locale.
- *
+ * 
  * <p>
  * Custom controllers can override the user's locale by calling
  * {@code setLocale}, e.g. responding to a locale change request.
- *
+ * 
  * @author Juergen Hoeller
  * @author Matija Obreza
- *
+ * 
  * @see #setDefaultLocale
  * @see #setLocale
  */
-public class BetterSessionLocaleResolver extends SessionLocaleResolver {
+public class RequestAttributeLocaleResolver implements LocaleResolver {
 
-	private Set<String> supportedLocales = new HashSet<String>();
+	private Locale defaultLocale;
 
-	public void setSupportedLocales(Set<String> supportedLocales) {
-		this.supportedLocales = supportedLocales;
-	}
-
-	public Set<String> getSupportedLocales() {
-		return supportedLocales;
-	}
-
-	/**
-	 * Determine the default locale for the given request, Called if no locale
-	 * session attribute has been found.
-	 * <p>
-	 * This implementation returns the request's accept-header locale if listed
-	 * in the {@link #supportedLocales} , else falls back to the specified
-	 * default locale.
-	 *
-	 * @param request
-	 *            the request to resolve the locale for
-	 * @return the default locale (never {@code null})
-	 * @see #setDefaultLocale
-	 * @see javax.servlet.http.HttpServletRequest#getLocale()
-	 */
 	@Override
-	protected Locale determineDefaultLocale(HttpServletRequest request) {
-		Locale defaultLocale = request.getLocale();
+	public Locale resolveLocale(HttpServletRequest request) {
+		Locale requestAttributeLocale = (Locale) request.getAttribute(LocaleURLFilter.REQUEST_LOCALE_ATTR);
 
-		if (defaultLocale != null && !supportedLocales.contains(defaultLocale.getLanguage())) {
-			// reset request locale if not on the list of supported locales
-			defaultLocale = null;
+		if (requestAttributeLocale == null) {
+			return this.defaultLocale;
 		}
 
-		if (defaultLocale == null) {
-			defaultLocale = getDefaultLocale();
-		}
-		return defaultLocale;
+		return requestAttributeLocale;
+	}
+
+	@Override
+	public void setLocale(HttpServletRequest request, HttpServletResponse response, Locale locale) {
+		throw new UnsupportedOperationException("Cannot set locale!");
 	}
 
+	public void setDefaultLocale(Locale defaultLocale) {
+		this.defaultLocale=defaultLocale;
+	}
 }

src/main/java/org/genesys2/spring/config/SpringServletConfig.java

@@ -22,7 +22,7 @@ import java.util.Properties;
 import java.util.Set;
 
 import org.genesys2.spring.AddStuffInterceptor;
-import org.genesys2.spring.BetterSessionLocaleResolver;
+import org.genesys2.spring.RequestAttributeLocaleResolver;
 import org.genesys2.spring.validation.oval.spring.SpringOvalValidator;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -41,7 +41,6 @@ import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 import org.springframework.web.servlet.handler.SimpleMappingExceptionResolver;
-import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
 import org.springframework.web.servlet.theme.CookieThemeResolver;
 import org.springframework.web.servlet.theme.ThemeChangeInterceptor;
 
@@ -83,13 +82,9 @@ public class SpringServletConfig extends WebMvcConfigurerAdapter {
 
 	@Override
 	public void addInterceptors(InterceptorRegistry registry) {
-		final LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
-		localeChangeInterceptor.setParamName("lang");
-
 		final ThemeChangeInterceptor themeChangeInterceptor = new ThemeChangeInterceptor();
 		themeChangeInterceptor.setParamName("theme");
 
-		registry.addInterceptor(localeChangeInterceptor);
 		registry.addInterceptor(themeChangeInterceptor);
 		registry.addInterceptor(addStuffInterceptor);
 	}
@@ -123,7 +118,7 @@ public class SpringServletConfig extends WebMvcConfigurerAdapter {
 	}
 
 	@Bean
-	public BetterSessionLocaleResolver localeResolver() {
+	public RequestAttributeLocaleResolver localeResolver() {
 		final Set<String> supportedLocales = new HashSet<String>();
 
 		supportedLocales.add("en");
@@ -136,9 +131,9 @@ public class SpringServletConfig extends WebMvcConfigurerAdapter {
 		supportedLocales.add("zh");
 		// supportedLocales.add("sl");
 
-		final BetterSessionLocaleResolver resolver = new BetterSessionLocaleResolver();
-		resolver.setDefaultLocale(Locale.forLanguageTag("en"));
-		resolver.setSupportedLocales(supportedLocales);
+		final RequestAttributeLocaleResolver resolver = new RequestAttributeLocaleResolver();
+		resolver.setDefaultLocale(new Locale("en"));
+//		resolver.setSupportedLocales(supportedLocales);
 		return resolver;
 	}
 

src/main/resources/log4j.properties

@@ -25,6 +25,7 @@ log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %t %5p %c{1}:%L - %m
 ### set log levels - for more verbose logging change 'info' to 'debug' ###
 log4j.rootLogger=info, stdout
 
+log4j.category.org.genesys2.server.servlet.filter=debug
 #log4j.category.org.genesys2=debug
 #log4j.category.org.hibernate.search=debug
 #log4j.category.org.apache.tomcat.jdbc.pool=debug

src/main/webapp/WEB-INF/decorator/entry.jsp

@@ -16,18 +16,19 @@
     <meta name="_csrf_header" content="${_csrf.headerName}"/>
 
 	<!-- Links -->
-	<link rel="shortcut icon" href="<c:url value="/genesys.png" />" />
+	<link rel="shortcut icon" href="<c:url value="/html/images/genesys.png" />" />
 
 	<!-- l10n -->
-	<link rel="alternate" hreflang="en" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="en" /></c:url>" />
-	<link rel="alternate" hreflang="ar" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="ar" /></c:url>" />
-	<link rel="alternate" hreflang="de" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="de" /></c:url>" />
-	<link rel="alternate" hreflang="es" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="es" /></c:url>" />
-	<link rel="alternate" hreflang="fa" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="fa" /></c:url>" />
-	<link rel="alternate" hreflang="fr" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="fr" /></c:url>" />
-	<link rel="alternate" hreflang="pt" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="pt" /></c:url>" />
-	<link rel="alternate" hreflang="ru" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="ru" /></c:url>" />
-	<link rel="alternate" hreflang="zh" href="<c:url value="?${pageContext.request.queryString}"><c:param name="lang" value="zh" /></c:url>" />
+	<link rel="alternate" hreflang="en" href="<c:url value="/en${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="ar" href="<c:url value="/ar${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="de" href="<c:url value="/de${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="es" href="<c:url value="/es${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="fa" href="<c:url value="/fa${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="fr" href="<c:url value="/fr${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="pt" href="<c:url value="/pt${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="ru" href="<c:url value="/ru${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+	<link rel="alternate" hreflang="zh" href="<c:url value="/zh${pageContext.request.getAttribute('org.genesys2.server.servlet.filter.LocaleURLFilter.INTERNALURL')}" />" />
+
 
     <title><sitemesh:write property="title" /></title>
 

src/main/webapp/WEB-INF/decorator/header.jsp

@@ -4,7 +4,7 @@
     <div class="container">
         <div class="clearfix">
             <div class="pull-left">
-        <a href="<c:url value="/" />"><img src="<c:url value="/html/images/logo_genesys.png" />" alt="Genesys - Gateway to Genetic Resources" title="Genesys - Gateway to Genetic Resources" /></a>
+        <a href="<c:url value="/welcome" />"><img src="<c:url value="/html/images/logo_genesys.png" />" alt="Genesys - Gateway to Genetic Resources" title="Genesys - Gateway to Genetic Resources" /></a>
             </div>
 
       <form class="navbar-form navbar-left" role="search" id="search" method="get" action="<c:url value="/acn/search" />">
@@ -67,19 +67,15 @@
                 <li class="dropdown" id="lang">
          		  <a href="#" class="dropdown-toggle" data-toggle="dropdown"><c:out value="${pageContext.response.locale.displayLanguage}" /> <b class="caret"></b></a>
                     <ul class="dropdown-menu" role="menu">
-                        <li><a href="?lang=en">English</a></li>
-                        <li><a href="?lang=ar">Arabic</a></li>
-                        <li><a href="?lang=de">German</a></li>
-                        <li><a href="?lang=es">Spanish</a></li>
-                        <li><a href="?lang=fa">Persian</a></li>
-                        <li><a href="?lang=fr">French</a></li>
-                        <li><a href="?lang=pt">Portugese</a></li>
-                        <li><a href="?lang=ru">Russian</a></li>
-                        <li><a href="?lang=zh">Chinese</a></li>