xUtils怎么post请求上传json数据

//设置传输参数。
RequestParams params = new RequestParams("UTF-8");
try {
paramssetBodyEntity(new StringEntity(gsontoJson(要转成json的对象),"UTF-8"));
paramssetContentType("application/json");
} catch (UnsupportedEncodingException e) {
eprintStackTrace();
}
>package comexampleandroidupload;

import javaioFile;
import javautilHashMap;
import javautilMap;

import androidappActivity;
import androidosBundle;
import androidosEnvironment;
import androidosHandler;
import androidutilLog;

import utilsFormFile;
import utilsSocket>