struts LocaleAction 的用法

package org.apache.struts.webapp.validator;

import java.util.Locale;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.Globals;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public final class LocaleAction extends Action {

    private Log log = LogFactory.getFactory().getInstance(this.getClass().getName());

    public ActionForward execute(ActionMapping mapping,
                 ActionForm form,
                 HttpServletRequest request,
                 HttpServletResponse response)
    throws Exception {

    // Extract attributes we will need
    HttpSession session = request.getSession();
    Locale locale = getLocale(request);

    String language = null;
    String country = null;
    String page = null;

    try {
            language = (String)
              PropertyUtils.getSimpleProperty(form, "language");
            country = (String)
              PropertyUtils.getSimpleProperty(form, "country");
            page = (String)
              PropertyUtils.getSimpleProperty(form, "page");
        } catch (Exception e) {
           log.error(e.getMessage(), e);
        }

        if ((language != null && language.length() > 0) &&
            (country != null && country.length() > 0)) {
           locale = new java.util.Locale(language, country);
        } else if (language != null && language.length() > 0) {
           locale = new java.util.Locale(language, "");
    }

        session.setAttribute(Globals.LOCALE_KEY, locale);

        if (null==page) return mapping.findForward("success");
        else return new ActionForward(page);

    }

}

在struts-config.xml中添加一个 动态actionFrom 
<form-beans>
    ......
    <from-bean name="Language" type="org.apache.struts.DynaActionForm">
           <form-property   name="language"    type="String"/>
           <form-property   name="country"    type="String"/>
   </from-bean>
........//其它的formbean
</form-beans>
 
 
配置Action
<action path="ChangeLocale" name="Language" type="org.apache.struts.actions.LocaleAction">
           <forward name="success" path="default.jsp" />
</action>
注意：forward的name必须为success,path为切换语言后跳转的页面.
 
jsp
<a href="ChangeLocale.do?language=CN&country=zh">简体中文</a>
<a href="ChangeLocale.do?language=TW&country=zh">繁体中文</a>
<a href="ChangeLocale.do?language=US&country=en">English</a>

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• 2007-06-30 20:41
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