JSPページエンコーディングフィルタについて(注記構成)

srcの下にFilterフィルタを追加

package com.kevin.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;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;

@WebFilter(filterName="encodingFilter",urlPatterns="/*")
public class EncodingFilter implements Filter {
	String encoding;
	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		// TODO Auto-generated method stub
		request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
		chain.doFilter(request, response);

	}

	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		System.out.println("destroy");
	}
}

主に2点です.
1つ目は注記の構成です:@WebFilter(filterName="encodingFilter"、urlPatterns="/*)
2つ目はdoFilterメソッドでフォーマットを指定することです(UTF-8の例).
request.setCharacterEncoding("UTF-8");         response.setCharacterEncoding("UTF-8");chain.doFilter(request, response);