httpClient响应结果乱码

今天用httpClient的方式调用别人的接口，对方返回来的是UTF-8，我们读出来却乱码，搞了半天发现httpclient默认字符集是IOS-8859-1，我们想转成utf-8

String httpResult = new String(httpResult.getBytes("ISO-8859-1"),"utf-8");