利用过滤器filter解决乱码问题

 new 出一个class

package org.dys.myznt.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;public class EncodingFilter implements Filter {private String charset = null;public void destroy() {}public void doFilter(ServletRequest req, ServletResponse resp,FilterChain chain) throws IOException, ServletException {req.setCharacterEncoding(this.charset);chain.doFilter(req, resp);}public void init(FilterConfig arg0) throws ServletException {this.charset = arg0.getInitParameter("charset");}}

 

 

配置web.xml

 <!-- 加过滤器解决乱码问题 --> <filter> <filter-name>encoding</filter-name> <filter-class>org.dys.myznt.filter.EncodingFilter</filter-class> <init-param> <param-name>charset</param-name> <param-value>GBK</param-value> </init-param> </filter> <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 过滤器结束 -->