1：可以写一个字符过滤器来解决

 

package com.capinfotech.filter;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class SetCharacterEncodingFilter extends HttpServlet implements Filter {

    protected String encoding = null;
    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;

    // Handle the passed-in FilterConfig
    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;
        }

    }

    // Process the request/response pair

    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);
                response.setCharacterEncoding(encoding);
            }
        }

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

    }

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

    // Clean up resources
    public void destroy() {
        this.encoding = null;
        this.filterConfig = null;
    }

}

 

在web.xml里进行配置，一定要配置在Struts2的前面

<filter>
    <filter-name>setcharacterencodingfilter</filter-name>
<filter-class>com.capinfotech.filter.SetCharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
      <param-name>ignore</param-name>
      <param-value>true</param-value>
    </init-param>
 </filter>

 <filter-mapping>
    <filter-name>setcharacterencodingfilter</filter-name>
    <url-pattern>/*</url-pattern>
 </filter-mapping>

 

2：修改Tomcat下面conf下的server.xml的内容

<Connector port="8088" protocol="HTTP/1.1"
              connectionTimeout="20000"
              redirectPort="8443"
              useBodyEncodingForURI="true" URIEncoding="utf-8"
              />

增加useBodyEncodingForURI="true" URIEncoding="utf-8"

 

3：在struts.xml里或者struts.properties增加struts.i18n.encoding=UTF-8