我正在使用 Retrofit 2（beta 4），我希望从使用标准Call响应转向 RxAndroidObservable响应。Call<List<ExampleObject>>通过从到的简单交换，我成功地切换了大部分通话Observable<List<ExampleObject>>。我的一些电话使用Call<okhttp3.ResponseBody>，效果很好，但是当我换出 时Call，遇到了一个错误：
03-03 15:21:44.237 27333-27333/com.example.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.app, PID: 27333
java.lang.IllegalArgumentException: Unable to create call adapter for rx.Observable<okhttp3.ResponseBody>
for method AuthenticationService.getLoginForm
at retrofit2.Utils.methodError(Utils.java:119)
at retrofit2.MethodHandler.createCallAdapter(MethodHandler.java:52)
at retrofit2.MethodHandler.create(MethodHandler.java:25)
at retrofit2.Retrofit.loadMethodHandler(Retrofit.java:164)
at retrofit2.Retrofit$1.invoke(Retrofit.java:145)
at java.lang.reflect.Proxy.invoke(Proxy.java:393)
at $Proxy6.getLoginForm(Unknown Source)
at com.example.app.ui.fragment.LoginFragment.login(LoginFragment.java:214)
at com.example.app.ui.fragment.LoginFragment.lambda$onContinue$1(LoginFragment.java:168)
at com.example.app.ui.fragment.LoginFragment.access$lambda$1(LoginFragment.java)
at com.example.app.ui.fragment.LoginFragment$$Lambda$4.onClick(Unknown Source)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21153)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Could not locate call adapter for rx.Observable<okhttp3.ResponseBody>.
Tried:
* retrofit2.ExecutorCallAdapterFactory
at retrofit2.Retrofit.nextCallAdapter(Retrofit.java:230)
at retrofit2.Retrofit.callAdapter(Retrofit.java:194)
at retrofit2.MethodHandler.createCallAdapter(MethodHandler.java:50)
... 18 more
我ResponseBody像往常一样使用而不是另一个对象的原因是因为在这些情况下我需要解析 HTML，据我所知，没有用于 HTML 解析器的 Retrofit 转换器。我知道我可能可以自己创建一个，但我不希望我必须解析少量的 HTML。
我的问题是，Retrofit 2 本身支持时，Retrofit 2 RxJava 适配器为什么不支持ResponseBody？还有另一种方法可以从 获取响应字符串Observable吗？
我的服务：
public interface AuthenticationService() {
@GET("cas/login")
Observable<Response<ResponseBody>> login();
}
相关改造代码：
public static Retrofit getRetrofit() {
if(mRetrofit == null) {
return new Retrofit.Builder()
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create(getGson()))
.client(getOkHttpClient())
.build();
} return mRetrofit;
}
public static AuthenticationService getAuthenticationService() {
return getRetrofit().create(AuthenticationService.class);
}
响应尝试：
private void login() {
RestClient.getAuthenticationService().login()
.observeOn(ASchedulers.newThread())
.subscribeOn(AndroidSchedulers.mainThread())
.doOnNext(this::onLoginResponse);
}
private void onLoginResponse(Response<ResponseBody>> response) {
try {
parseResponse(response.body().string());
} catch (IOException) {
Timber.w(throwable, "Failed to login");
}
}
新的堆栈跟踪：
03-03 16:14:57.848 26866-26866/com.example.app E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.app, PID: 26866
java.lang.IllegalArgumentException: Unable to create call adapter for rx.Observable<retrofit2.Response<okhttp3.ResponseBody>>
for method AuthenticationService.getLoginForm
at retrofit2.Utils.methodError(Utils.java:119)
at retrofit2.MethodHandler.createCallAdapter(MethodHandler.java:52)
at retrofit2.MethodHandler.create(MethodHandler.java:25)
at retrofit2.Retrofit.loadMethodHandler(Retrofit.java:164)
at retrofit2.Retrofit$1.invoke(Retrofit.java:145)
at java.lang.reflect.Proxy.invoke(Proxy.java:393)
at $Proxy3.getLoginForm(Unknown Source)
at com.example.app.ui.fragment.LoginFragment.login(LoginFragment.java:206)
at com.example.app.ui.fragment.LoginFragment.lambda$onContinue$1(LoginFragment.java:160)
at com.example.app.ui.fragment.LoginFragment.access$lambda$1(LoginFragment.java)
at com.example.app.ui.fragment.LoginFragment$$Lambda$4.onClick(Unknown Source)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21153)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalArgumentException: Could not locate call adapter for rx.Observable<retrofit2.Response<okhttp3.ResponseBody>>.
Tried:
* retrofit2.ExecutorCallAdapterFactory
at retrofit2.Retrofit.nextCallAdapter(Retrofit.java:230)
at retrofit2.Retrofit.callAdapter(Retrofit.java:194)
at retrofit2.MethodHandler.createCallAdapter(MethodHandler.java:50)
... 18 more