解决JSP开发Web程序中文显示的三种方法

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 SetCharacterEncodingFilter implements Filter {

　protected String encoding = null;

　protected FilterConfig filterConfig = null;

　protected boolean ignore = true;



　public void init(FilterConfig filterConfig) throws ServletException {

　　this.filterConfig=filterConfig;

　　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

　　　this.ignore=false;

　}



　public void doFilter(

ServletRequest request, ServletResponse response, FilterChain chain)

 throws IOException, ServletException {

　// TODO 自动生成方法存根

　if (ignore || (request.getCharacterEncoding() == null)) {

　　String encoding = selectEncoding(request);

　　if (encoding != null)

　　　request.setCharacterEncoding(encoding);

　}

　chain.doFilter(request, response);

}



public void destroy() {

　// TODO 自动生成方法存根

　this.encoding = null;

　this.filterConfig = null;

}



protected String selectEncoding(ServletRequest request) {

　return (this.encoding);

}

}

＜!-- Set Character Encoding--＞

＜filter＞

　＜filter-name＞Set Character Encoding＜/filter-name＞

　＜filter-class＞com.struts.common.SetCharacterEncodingFilter＜/filter-class＞

　＜init-param＞

　　＜param-name＞encoding＜/param-name＞

　　＜param-value＞UTF-8＜/param-value＞

　＜/init-param＞

＜/filter＞

＜filter-mapping＞

　＜filter-name＞Set Character Encoding＜/filter-name＞

　　＜url-pattern＞/*＜/url-pattern＞

　＜/filter-mapping＞

＜!-- Set Character Encoding--＞