characterencodingfilter.java

来自「这段代码是用struts实现的客户管理系统」· Java 代码 · 共 36 行

package com.tarena.filter;

import java.io.IOException;

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

import com.tarena.util.HttpFilter;

/**
 * 通用的字符集转换的过滤器。 目标字符集通过初始化参数encoding指定，缺省为gbk。
 * 过滤器是否启用通过初始化参数inuse(true)指定,，缺省为true。
 * 
 * @author Allan
 */
public class CharacterEncodingFilter extends HttpFilter {
	@Override
	public void doFilter(HttpServletRequest request,
			HttpServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		String inuse = getInitParameter("inuse");
		if (inuse == null) {
			inuse = "true";
		}
		if (inuse.equals("true")) {
			String encoding = getInitParameter("encoding");
			if (encoding == null) {
				encoding = "gbk";
			}
			request.setCharacterEncoding(encoding);
		}
		chain.doFilter(request, response);    
	}
}