Java Filter

package com.zsz.admin.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.http.HttpServletRequest;

import com.zsz.tools.TrimHttpRequest;





@WebFilter("/*")
public class EncodingTrimFilter implements Filter {

	@Override
	public void destroy() {
		
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		
		TrimHttpRequest trimReq = new TrimHttpRequest((HttpServletRequest)request);
		//chain.doFilter(request, response);
		chain.doFilter(trimReq, response);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
				
	}

}

使用JAVA Filter前的准备