First, check whether your retrofit configuration is correct and resolve the exception
.addconverterfactory (gsonconverterfactory. Create()) is modified here to the gson’s
Retrofit retrofit = new Retrofit.Builder() .baseUrl(HTTP_URL) .client(getOkHttpClient()) .addConverterFactory(GsonConverterFactory.create()) //Replace the converter, the return value is directly String, easy to parse the same field of different types of json data yourself .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) .build();
If this position is like this, report an error
Check whether your API path is correct, and see if there is a missing ‘/’ or something