j2ee Servlet 过滤器

最新推荐文章于 2023-06-27 19:23:14 发布

JavaJstl

最新推荐文章于 2023-06-27 19:23:14 发布

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分类专栏： j2ee resin 文章标签： servlet filter class

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package info.servlet;

import info.util.UrlHelper;

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;

/**
 * Servlet Filter implementation class InfoFilter
 */
public class InfoFilter implements Filter {

    /**
     * Default constructor. 
     */
    public InfoFilter() {
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

		request.setCharacterEncoding(UrlHelper.FORMAT_UTF8);
		response.setContentType("text/html; charset=UTF-8");
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
	}

}

web.xml 配置

	<filter>
		<display-name>infoFilter</display-name>
		<filter-name>infoFilter</filter-name>
		<filter-class>info.servlet.InfoFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>infoFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>