Struts2 Get传值乱码过滤器

问题的原因在于get传值的时候，getParameter方法使用的是ISO8859-1编码，。修改一下此方法

（1）java类1：EncodeRequestWrapper.java

public class EncodeRequestWrapper extends HttpServletRequestWrapper {
 
 private HttpServletRequest request;
 public EncodeRequestWrapper(HttpServletRequest request) {
  super(request);
  this.request = request;
 }
 @Override
 public String getParameter(String name) {
  String value = request.getParameter(name);
  try {
   if(value != null) return new String(value.getBytes("ISO8859-1"),"utf-8");
  } catch (UnsupportedEncodingException e) {
   e.printStackTrace();
  }
  return super.getParameter(name);
 }
}

（2）java类2：EncodeFilter.java

public class EncodeFilter implements Filter {

 @Override
 public void destroy() {
 }

 @Override
 public void doFilter(ServletRequest request, ServletResponse response,
   FilterChain chain) throws IOException, ServletException {
  HttpServletRequest req = (HttpServletRequest) request;
  if("GET".equals(req.getMethod())){
   EncodeRequestWrapper wrapper = new EncodeRequestWrapper(req);
   chain.doFilter(wrapper, response);
  }
  else{
   req.setCharacterEncoding("utf-8");
   chain.doFilter(req, response);
  }
 }

 @Override
 public void init(FilterConfig arg0) throws ServletException {
  // TODO Auto-generated method stub

 }

}

（3）web.xml配置

<filter>
<filter-name>encodeFilter</filter-name>
<filter-class>com.test.Encode.EncodeFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodeFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>