如何配置filter解决Struts的中文问题

和风细雨 — Thu, 20 Mar 2008 04:46:00 GMT

1.制作一filter类如下：

package com.sitinspring.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class SetCharacterEncodingFilter implements Filter {
    protected String encoding = null;

    protected FilterConfig filterConfig = null;

    protected boolean ignore = true;

    public void destroy() {
        this.encoding = null;
        this.filterConfig = null;
    }

    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain) throws IOException, ServletException {

        // Conditionally select and set the character encoding to be used
        if (ignore || (request.getCharacterEncoding() == null)) {
            String encoding = selectEncoding(request);
            if (encoding != null)
                request.setCharacterEncoding(encoding);
        }

        // Pass control on to the next filter
        chain.doFilter(request, response);

    }

    public void init(FilterConfig filterConfig) throws ServletException {

        this.filterConfig = filterConfig;
        this.encoding = filterConfig.getInitParameter("encoding");
        String value = filterConfig.getInitParameter("ignore");
        if (value == null)
            this.ignore = true;
        else if (value.equalsIgnoreCase("true"))
            this.ignore = true;
        else if (value.equalsIgnoreCase("yes"))
            this.ignore = true;
        else
            this.ignore = false;

    }

    protected String selectEncoding(ServletRequest request) {
        return (this.encoding);
    }

}

2.在Web.xml中配置这个filter。

    <filter>
        <filter-name>Set Character Encodingfilter-name>
        <filter-class>com.sitinspring.filter.SetCharacterEncodingFilterfilter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>UTF-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>Set Character Encodingfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>

3.Action调用示例：

package com.sitinspring.action;

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

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

/**
* Action定义处
* @author sitinspring
*
* @date 2008-3-20
*/
public final class HelloAction extends Action {
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        request.setCharacterEncoding("UTF-8");

        // 取Form中参数name
        String name = (String) PropertyUtils.getSimpleProperty(form, "name");

        request.setAttribute("msg", "欢迎你！"+name);

        return (mapping.findForward("SayHello"));
    }
}

以上。

和风细雨 2008-03-20 12:46 发表评论

BlogJava-和风细雨-随笔分类-Struts

如何配置filter解决Struts的中文问题