SSH 中文过滤器

<!-- web.xml 中的过滤器配置，过滤中文 -->  
	<filter>
	    <filter-name>CharacterEncoding</filter-name>
	    <filter-class>
	      com.itJob.wit.util.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>CharacterEncoding</filter-name>
	    <url-pattern>/*</url-pattern>
	</filter-mapping>  


package com.itJob.wit.util;

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;

/**
 * 描述：中文过滤器
 * @author TEAMWORK
 * <p>
 */
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 {
		if (ignore && (request.getCharacterEncoding() == null)) {
			String encoding = selectEncoding(request);
			if (encoding != null) {
				request.setCharacterEncoding(encoding);
			}
		}

		chain.doFilter(request, response);
	}

	public void init(FilterConfig request) throws ServletException {
		this.filterConfig = request;
		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);
	}
}