通过过滤器（Filter）解决JSP的Post和Request中文乱码问题

jsp代码：

import javax.servlet.*;import javax.servlet.http.*;public class CharsetFilter implements Filter{public void destroy（） {}public void doFilter（ServletRequest request, ServletResponse response, FilterChain chain） {try{HttpServletRequest httpRequest = （HttpServletRequest）request;String method = httpRequest.getMethod（）.toLowerCase（）;if（method.equals（"post"））{//如果是post，即表单方法，直接设置charset即可request.setCharacterEncoding（"UTF-8"）;}else if（method.equals（"get"））{//如果是get方法request.setCharacterEncoding（"UTF-8"）;request = new HttpServletRequestWrapper（（HttpServletRequest）request）{public String getParameter（String str）{try{return new String（super.getParameter（str）.getBytes（"iso-8859-1"）,"GBK"）;}catch（Exception e）{return null;} }};}chain.doFilter（request, response）;}catch（Exception e）{}}public void init（FilterConfig filterConfig） {}}

过滤器配置：

<filter><filter-name>CharFilter</filter-name><filter-class>CharsetFilter</filter-class></filter><filter-mapping><filter-name>CharFilter</filter-name><url-pattern>/*</url-pattern><dispatcher>REQUEST</dispatcher></filter-mapping>