学步园

import java.io.IOException;
import java.io.UnsupportedEncodingException;

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.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

public class CharacterEncodingFilter implements Filter {

	
	public void doFilter(ServletRequest req, ServletResponse resp,
			FilterChain chain) throws IOException, ServletException {
		
		
		HttpServletRequest request = (HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) resp;
		
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		response.setContentType("text/html;charset=UTF-8");
		
		chain.doFilter(new MyRequest(request), response);
		

	}

	public void init(FilterConfig filterConfig) throws ServletException {
	}
	
	public void destroy() {
	}
}

class MyRequest extends HttpServletRequestWrapper{
	private HttpServletRequest request;
	public MyRequest(HttpServletRequest request) {
		super(request);
		this.request = request;
		
	}
	@Override
	public String getParameter(String name) {
		
		String value = this.request.getParameter(name);
		if(value==null){
			return null;
		}
		if(!this.request.getMethod().equalsIgnoreCase("get")){
			return value;
		}
		try {
			value = new String(value.getBytes("iso8859-1"),"UTF-8");
		} catch (UnsupportedEncodingException e) {
			throw new RuntimeException(e);
		}
		return value;
	}
}

转载请注明：http://blog.csdn.net/vipwalkingdog/article/details/7998791