jsp页面写入中文到mysql时出现了乱码(转)

public class SetCharacterEncodingFilter implements Filter {     class Request extends HttpServletRequestWrapper     {         public Request(HttpServletRequest request) {             super(request);         }

        public String toChi(String input) {             try {                 byte[] bytes = input.getBytes(”ISO8859-1″);                 return new String(bytes, “utf-8″);             } catch (Exception ex) {             }             return null;         }

        private HttpServletRequest getHttpServletRequest()         {             return (HttpServletRequest) super.getRequest();         }

        public String getParameter(String name)         {             return             toChi(getHttpServletRequest().getParameter(name));         }         public String[] getParameterValues(String name)         {             String values[] =getHttpServletRequest().getParameterValues(name);             if (values != null) {                 for (int i = 0; i < values.length; i++) {                     values[i] = toChi(values[i]);                 }             }             return values;         }     }

    public void destroy() {     }     public void doFilter(ServletRequest request, ServletResponse     response,FilterChain chain) throws IOException, ServletException {         HttpServletRequest httpreq = (HttpServletRequest) request;

        if (httpreq.getMethod().equals(”POST”)) {

            request.setCharacterEncoding(”utf-8″);

        } else {             request = new Request(httpreq);         }

        chain.doFilter(request, response);     }

    public void init(FilterConfig filterConfig) throws     ServletException {     }   }

然后在WEB-INF目录下的web.xml文件，配置下过虑器，

<filter>    <filter-name>SetCharacterEncodingFilter</filter-name>    <filter-class>peom.SetCharacterEncodingFilter</filter-class>  </filter>  <filter-mapping>    <filter-name>SetCharacterEncodingFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>

这里要注意的是：路径、代码尽量放在前面，最好是<web-app 的后面