HttpClient访问 有关NameValuePair[]的报错

这个错误怎么解决
下面是有错的地方

The method addParameters(NameValuePair[])in the type PostMethod is not applicable for the arguments(NameValuePair[])

 {
            //post模式且不带上传文件
            method = new PostMethod(request.getUrl());
            ((PostMethod) method).addParameters(request.getParameters());
            method.addRequestHeader("Content-Type", "application/x-www-form-urlencoded; text/html; charset=" + charset);
        }