get post 提交都是有中文乱码及怎么写过滤器

Question

两中方式提交后,数据库中都是中文乱码,若写过滤器,该怎么写,不写过滤器该怎么办?

Answer 1

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 EncodingFilter implements Filter { public void destroy() { } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
chain.doFilter(request, response);
} public void init(FilterConfig arg0) throws ServletException { }}
不写过滤器的话只要有这2句就行
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");

Answer 2

在JSP里面加上编码设置就可以解决问题了。如下：
<%@ page pageEncoding="UTF-8" %>