struts1.3设置编码三种方法

package com.soft.struts.action;  
  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
import org.apache.struts.action.ActionServlet;  
  
public class MyActionServlet extends ActionServlet {  
    protected void process(HttpServletRequest request,  
            HttpServletResponse response) throws java.io.IOException,  
            javax.servlet.ServletException {  
        /** @todo Override this org.apache.struts.action.ActionServlet method */  
        request.setCharacterEncoding("GB2312");  
        super.process(request, response);  
    }  
}  

<servlet>  
    <servlet-name>action</servlet-name>  
    <servlet-class>com.soft.struts.action.MyActionServlet</servlet-class>  
    ......  
</servlet>  
　二、写一个过滤器类EncodingFilter.class，执行相关路径之前执行这个过滤器类。 

Java代码  收藏代码
package com.soft.struts.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;  
  
import org.apache.commons.logging.Log;  
import org.apache.commons.logging.LogFactory;  
  
/** 
 * class EncodingFilter 
 *  
 * @author xiaoqing.yu 
 */  
public class EncodingFilter implements Filter {  
  
    /** encoding */  
    protected String encoding = null;  
  
    /** config */  
    protected FilterConfig config;  
  
    /** log */  
    protected static final Log log = LogFactory.getLog(EncodingFilter.class);  
  
    /** 
     * Mehtod destroy 
     */  
    public void destroy() {  
        this.config = null;  
        this.encoding = null;  
    }  
  
    /** 
     * Method doFilter 
     *  
     * @param request 
     *            ServletRequest 
     * @param response 
     *            ServletResponse 
     * @param filterChain 
     *            FilterChain 
     */  
    public void doFilter(ServletRequest request, ServletResponse response,  
            FilterChain filterChain) throws IOException, ServletException {  
  
        log.info("Before excuted the body of method EncodingFilter.doFilter(), Character Encoding is : "  
                        + request.getCharacterEncoding());  
        log.info("Excuting the body of method EncodingFilter.doFilter()...");  
        if (request.getCharacterEncoding() == null) {  
            if (this.getEncoding() != null) {  
                request.setCharacterEncoding(this.getEncoding());  
            }  
        }  
        log.info("After excuted the body of method EncodingFilter.doFilter(), Character Encoding is : "  
                        + request.getCharacterEncoding());  
        filterChain.doFilter(request, response);  
    }  
  
    /** 
     * Method init 
     *  
     * @param filterConfig 
     *            FilterConfig 
     */  
    public void init(FilterConfig filterConfig) throws ServletException {  
        this.config = filterConfig;  
        this.encoding = this.config.getInitParameter("Encoding");  
        log.info("Init Parameter Encoding : " + this.encoding);  
    }  
  
    /** 
     * Method getEncoding 
     *  
     * @return String 
     */  
    public String getEncoding() {  
        return encoding;  
    }  
}  

<filter>  
<filter>  
    <filter-name>encodingFilter</filter-name>  
    <filter-class>com.soft.struts.filter.EncodingFilter</filter-class>  
    <init-param>  
        <param-name>Encoding</param-name>  
        <param-value>GB2312</param-value>  
    </init-param>  
</filter>  
<filter-mapping>  
    <filter-name>encodingFilter</filter-name>  
    <url-pattern>/*</url-pattern>  
</filter-mapping> 

<?xml version="1.0" ?>  
<catalog name="struts">  
    <chain name="servlet-standard-preprocess">  
        <command className="com.soft.struts.action.chain.EncodingChain"/>  
    </chain>  
</catalog>

package com.soft.struts.action.chain;  
  
import javax.servlet.http.HttpServletRequest;  
  
import org.apache.commons.chain.Command;  
import org.apache.commons.chain.Context;  
import org.apache.commons.logging.Log;  
import org.apache.commons.logging.LogFactory;  
import org.apache.struts.chain.contexts.ServletActionContext;  
  
/** 
 * class EncodingChain 
 * @author xiaoqing.yu 
 */  
public class EncodingChain implements Command {  
  
    /** log */  
    protected static final Log log = LogFactory.getLog(TestChain.class);  
      
    public boolean execute(Context context) throws Exception {  
        ServletActionContext sacontext = (ServletActionContext) context;  
          
        HttpServletRequest request = sacontext.getRequest();  
        request.setCharacterEncoding("GB2312");  
        log.info("Character Encoding : " + request.getCharacterEncoding());  
        log.info("Chain test successfully...");  
        return false;  
    }  
}  

<servlet>  
    ......  
    <init-param>  
        <param-name>chainConfig</param-name>  
        <param-value>  
            org/apache/struts/chain/chain-config.xml,  
            /WEB-INF/custom-chain-config.xml  
        </param-value>  
    </init-param>  
    ......  
</servlet>