encodingfilter.java

一个extjs编写的代码

package anni.te;

import java.io.IOException;

import javax.servlet.*;
import javax.servlet.http.*;


/**
 * @web.filter name="EncodingFilter"
 * @web.filter-init-param name="encoding" value="utf-8"
 * @web.filter-mapping url-pattern="/*"
 */
public class EncodingFilter implements Filter {
    private String encoding = "utf-8";

    public void init(FilterConfig config) throws ServletException {
        String currentEncoding = config.getInitParameter("encoding");

        if (currentEncoding != null) {
            this.encoding = currentEncoding;
        }
    }

    public void destroy() {
        this.encoding = null;
    }

    public void doFilter(ServletRequest request, ServletResponse response,
        FilterChain chain) throws ServletException, IOException {
        request.setCharacterEncoding(this.encoding);
        response.setCharacterEncoding(this.encoding);

        chain.doFilter(request, response);
    }
}