在你的web.xml中：
<filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>com.example.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <servlet-name>dispatcher</servlet-name> </filter-mapping>
com.example.CharacterEncodingFilter：
public class CharacterEncodingFilter implements Filter { protected String encoding; public void init(FilterConfig filterConfig) throws ServletException { encoding = filterConfig.getInitParameter("encoding"); } public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) servletRequest; request.setCharacterEncoding(encoding); filterChain.doFilter(servletRequest, servletResponse); } public void destroy() { encoding = null; }}
