我正在向服务器发送API请求，我可以获得两个JSON响应：
经过身份验证的用户响应：
{"status":"ok","tekst":"8bc6c9cf-293f-11e5-9940-448a5b5dd2bd","requestID":9034}
未经身份验证的用户响应：
{"authenticationError":"User authentication failed"}
改造服务：
public interface LiveService {
@GET("live.php")
Observable<Response<LiveResponse>> getLive();
}
这是对服务器的改造请求：
retrofit.create(LiveService.class)
.getLive()
.subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Subscriber<Response<LiveResponse>>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
liveView.onLiveError(e);
}
@Override
public void onNext(Response<LiveResponse> response) {
}
});
如何在onNext中处理响应，以检查我是否为经过身份验证的用户或未经身份验证的用户提供JSON响应？
答案 0 :(得分：4)
您的模型需要将两者的所有字段合并为一个POJO。那很简单： - ）
不存在的经过身份验证的用户/未经身份验证的用户将只为null。
更清楚......
让我们做两个不同的回复。以下是我遇到的两个随机JSON有效负载。
@Override
protected void onCreate(Bundle savedInstanceState) {
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
layout = (RelativeLayout) findViewById(R.id.activity_main);
Point size = new Point();
Display display = getWindowManager().getDefaultDisplay();
display.getRealSize(size);
params = new RelativeLayout.LayoutParams(size.x / 5, 200);
padding = size.x / 5;
addButtons();
}
public void addButtons() {
Button update = new Button(this);
RelativeLayout.LayoutParams updateParams = params;
updateParams.addRule(RelativeLayout.CENTER_VERTICAL);
update.setLayoutParams(updateParams);
update.setPadding(padding, 0, 0, 0);
update.setText("Update Me!");
update.setOnClickListener(new ClickHandler("app_update"));
updateId = update.generateViewId();
update.setId(updateId);
layout.addView(update);
Button install = new Button(this);
RelativeLayout.LayoutParams installParams = params;
installParams.addRule(RelativeLayout.RIGHT_OF, update.getId());
installParams.addRule(RelativeLayout.CENTER_VERTICAL);
install.setLayoutParams(installParams);
install.setPadding(padding, 0, 0, 0);
install.setText("Install LastBox");
install.setOnClickListener(new ClickHandler("kodi_install"));
installId = install.generateViewId();
install.setId(installId);
layout.addView(install);
Button dlFamily = new Button(this);
RelativeLayout.LayoutParams dlFamilyParams = params;
dlFamilyParams.addRule(RelativeLayout.RIGHT_OF, install.getId());
dlFamilyParams.addRule(RelativeLayout.ABOVE, install.getId());
dlFamily.setLayoutParams(dlFamilyParams);
dlFamily.setPadding(padding, 0, 0, padding);
dlFamily.setText("Download Family Build");
dlFamily.setOnClickListener(new ClickHandler("family_download"));
dlFamilyId = dlFamily.generateViewId();
dlFamily.setId(dlFamilyId);
layout.addView(dlFamily);
Button upFamily = new Button(this);
RelativeLayout.LayoutParams upFamilyParams = params;
upFamilyParams.addRule(RelativeLayout.RIGHT_OF, install.getId());
upFamilyParams.addRule(RelativeLayout.BELOW, install.getId());
upFamily.setLayoutParams(upFamilyParams);
upFamily.setPadding(padding, padding, 0, 0);
upFamily.setText("Update Family Build");
upFamily.setOnClickListener(new ClickHandler("family_update"));
upFamilyId = upFamily.generateViewId();
upFamily.setId(upFamilyId);
layout.addView(upFamily);
Button dlAdult = new Button(this);
RelativeLayout.LayoutParams dlAdultParams = params;
dlAdultParams.addRule(RelativeLayout.RIGHT_OF, dlFamily.getId());
dlAdultParams.addRule(RelativeLayout.ABOVE, install.getId());
dlAdult.setLayoutParams(dlAdultParams);
dlAdult.setPadding(padding, 0, 0, padding);
dlAdult.setText("Download Adult Build");
dlAdult.setOnClickListener(new ClickHandler("adult_download"));
dlAdultId = dlAdult.generateViewId();
dlAdult.setId(dlAdultId);
layout.addView(dlAdult);
Button upAdult = new Button(this);
RelativeLayout.LayoutParams upAdultParams = params;
upAdultParams.addRule(RelativeLayout.RIGHT_OF, upFamily.getId());
upAdultParams.addRule(RelativeLayout.BELOW, install.getId());
upAdult.setLayoutParams(upAdultParams);
upAdult.setPadding(padding, padding, 0, 0);
upAdult.setText("Update Adult Build");
upAdult.setOnClickListener(new ClickHandler("adult_update"));
upAdultId = upAdult.generateViewId();
upAdult.setId(upAdultId);
layout.addView(upAdult);
}
引导我们找到像
这样的组合对象 {
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500
}
{
"src": "Images/Sun.png",
"name": "sun1",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
}
给我们一个看起来像这样的POJO。
{
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500,
"src": "ImagesSun.png",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
}
答案 1 :(得分：3)
我同意StarWind，添加另一个字段将帮助您稍后决定如何处理响应，但首先您需要调整您的方法，其中最终结果不是Response<T>，而是身体（对象）。通过以下列方式链接调用，可以使用RxJava轻松完成此操作：接收响应，检查是否成功，检查反序列化的正文对象是否包含身份验证错误字段。
retrofit.create(LiveService.class).getLive().flatMap(new Function<Response<LiveResponse>, ObservableSource<LiveResponse>>() {
@Override
public ObservableSource<LiveResponse> apply(Response<LiveResponse> liveResponse) throws Exception {
LiveResponse body = liveResponse.body();
if(liveResponse.isSuccessful() && body != null && body.getAuthenticationError() == null){ //probably check http error code too
return Observable.just(body);
}else if(body != null){
throw new AuthenticationException(body.getAuthenticationError());
}else{
throw IllegalArgumentException("something terribly happened here"); }
}
}).subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Observer<LiveResponse>() {
@Override
public void onComplete() {
}
@Override
public void onError(Throwable e) {
liveView.onLiveError(e); //authentication error maybe or network excp
}
@Override
public void onNext(LiveResponse body) {
}
});
请注意，我使用了RxJava 2，但您可以在RxJava 1中轻松地重写它。
答案 2 :(得分：2)
改造只能处理一种数据类型。也许你可以使用authenticated_user＆amp;创建主用户对象。 unauthenticated_user对象。也许您应该要求后端团队返回布尔值或任何变量来识别数据类型。
class User {
AuthUser authUser;
UnAuthUser unAuthUSer;
}