JSP与struts2中的乱码问题，解决方法很多，今天我又尝试了一个新方法感觉不错，超简单

首先写一个filter

public class SetCodeFilter implements Filter {

	@Override
	public void destroy() {	}

	@Override
	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException {
			
		req.setCharacterEncoding("UTF-8");
		chain.doFilter(req, res);
	}

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

}

<filter>
      <filter-name>SetCodeFilter</filter-name>
      <filter-class>com.shop.web.filter.SetCodeFilter</filter-class>
  </filter>
  <filter-mapping>
      <filter-name>SetCodeFilter</filter-name>
      <url-pattern>*.do</url-pattern>
      <url-pattern>*.jsp</url-pattern>
  </filter-mapping>