请教httpclient4.0中文乱码的问题

Question

页面返回response里没设置charset，meta里设置了charset=gbk，获取页面出现中文乱码
，httpclient4.0要怎么设置编码啊？网上资料比较少
DefaultHttpClient client = new DefaultHttpClient();
client.getParams().setParameter(HttpProtocolParams.HTTP_CONTENT_CHARSET,"GBK");
以上设置没有用？

代码：
DefaultHttpClient client = new DefaultHttpClient();

    HttpGet httpget = new HttpGet(
            "http://www.ningdaren.com/");

    HttpResponse response = client.execute(httpget);
    HttpEntity entity = response.getEntity();

    System.out.println("登陆前页面返回状态信息----------：");
    System.out.println(response.getStatusLine());
    Header[] headers = response.getAllHeaders(); // 返回的HTTP头信息
    for (int i = 0; i < headers.length; i++) {
        System.out.println(headers[i]);
    }

//返回页面信息
if(entity!= null){
String responseString = new String(EntityUtils.toString(entity).getBytes("gbk"));
System.out.println(responseString);
}

    System.out.println("----------------------------------------");
    if (entity != null) {
        entity.consumeContent();
    }

[b]问题补充：[/b]
具体要怎么设置啊，我试了很多函数都没用。。
httpget.addHeader("Content-Type","application/x-www-form-urlencoded; charset="utf-8")没用啊

Answer 1

把得到的responseString进行下编码就行，如下：
responseString = new String(responseBody.getBytes("ISO-8859-1"),"UTF-8")