encodingfilter.java

一个完整的物流系统

package jp.com.cost.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 EncodingFilter implements Filter {
	private String encoding = null;
	
	public void destroy() {
		// TODO Auto-generated method stub

	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		
		if (request.getCharacterEncoding() == null) {
			//System.out.println("aaaaaaaaaaaa");
			if (encoding != null) {
				
				request.setCharacterEncoding(encoding);
				response.setCharacterEncoding(encoding);
				 //System.out.println(request.getCharacterEncoding());
			}
		}
		chain.doFilter(request,response);
	}

	public void init(FilterConfig config) throws ServletException {
		// TODO Auto-generated method stub
		encoding = config.getInitParameter("encoding");
	}

}