android http UrlEncode 中文乱码等问题

//需要说明的是，android的高版本中，http之类的请求必须要放在一个线程里面，否则程序报错退出。

BufferedReader in = null;

try {
HttpClient client = new DefaultHttpClient();
HttpPost request = new HttpPost(

"http://xxxxxxx.aspx");

List<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("cityid", "广州市"));

//下面这一行是对字符进行urlEncode，会把中文转换成%xx%xx%xx这样的形式。

UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity( postParameters,HTTP.UTF_8);

//一定要加上下面这一条，设置http请求头才行。

request.setHeader("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");
request.setEntity(formEntity);
HttpResponse response = client.execute(request);

if(response.getStatusLine().getStatusCode()==200)
{
String strResult = EntityUtils.toString(response.getEntity());

Log.e("haha",strResult);
}
} catch(Exception e) {
e.printStackTrace();
} finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}

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