OkHttpClient okHttpClient = new OkHttpClient();
FormBody.Builder builder = new FormBody.Builder();
builder.add("key","value");
FormBody body = builder.build();
Request request =new Request.Builder().url("").post(body).build();
Call call = okHttpClient.newCall(request);
//       非同步請求
call.enqueue(new 
 
Callback() {
            @Override
public void onFailure(Call call, IOException e) {

            }

            @Override
public void onResponse(Call call, Response response) throws IOException {
                String json = response.body().string();
}
        });
//       同步請求
//        try {
//            Response response = call.execute();
 
//            String json = response.body().string();
//        } catch (IOException e) {
//            e.printStackTrace();
//        }