Retrofit2.0+RxJava2.0问题

问题1：java.lang.IllegalStateException: Expected a string but was BEGIN_OBJECT at line 1 column 2 path $

@FormUrlEncoded
@POST("userLogin")
Observable<Object> userLogin(@Field

mPostLocation.userLogin(sfflag,telephone,
        password,phoneid,phonemodel,versions)
        .subscribeOn(Schedulers.newThread())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new BaseObserver<Object>(cnt) {

@PartMap parameters can only be used with multipart encoding. (parameter #2)

java.lang.IllegalArgumentException: Only one encoding annotation is allowed.
@Field parameters can only be used with form encoding.

@PartMap 需要使用注解/*@Multipart*/ 
@Field需要使用到注解：@FormUrlEncoded

两个不能同时使用，否则会报 Only one encoding annotation is allowed.

使用@FieldMap Map<String,RequestBody> params,来代替@PartMap来存储多张图片，只使用@FormUrlEncoded，但是发现请求接口，老是提示request参数不正确。

 问题二：

com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $

Gson gson = new GsonBuilder()
        .setLenient()
        .create();

    Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("http://whatever.com")
        .addConverterFactory(GsonConverterFactory.create(gson))
        .build(); 

　　https://stackoverflow.com/questions/27485346/malformedjsonexception-with-retrofit-api