我使用GWTP和restyGWT。我想在restyGWT DispatcherCallback中使用placeManager,当我的休息服务器将回答401 unauthorised
时,我想将应用程序重定向到登录页面,以便用户可以应用凭据并重试他的请求。
为此,我必须以某种方式(从gwtp框架)获取PlaceManager的实例。我无法使用@Inject
注释,因为我对构造函数进行了手动调用,如下所示:
public class ForbiddenDispatcherFilter implements DispatcherFilter {
@Override
public boolean filter(Method method, RequestBuilder builder) {
builder.setCallback(new ForbiddenDispatcherCallback(method));
return true;
}
}
public class ForbiddenDispatcherCallback implements RequestCallback {
protected RequestCallback requestCallback;
public ForbiddenDispatcherCallback(Method method) {
this.requestCallback = method.builder.getCallback();
}
@Override
public void onResponseReceived(Request request, Response response) {
if (response.getStatusCode() == Response.SC_FORBIDDEN || response.getStatusCode() == Response.SC_UNAUTHORIZED) {
// make a hard redirect to login page
// TODO change redirect to GWTP native
Window.Location.assign("#login");
// PlaceRequest placeRequest = new
// PlaceRequest.Builder(placeManager.getCurrentPlaceRequest()).nameToken(Routing.Url.login).build();
// placeManager.revealPlace(placeRequest);
} else {
requestCallback.onResponseReceived(request, response);
}
}
public class RestyDispatcher extends DefaultFilterawareDispatcher {
public RestyDispatcher() {
addFilter(new ForbiddenDispatcherFilter());
addFilter(new BasicAuthHeaderDispatcherFilter());
}
@Override
public Request send(Method method, RequestBuilder builder) throws RequestException {
return super.send(method, builder);
}
}
请帮忙。
编辑
public class ClientModule extends AbstractPresenterModule {
@Override
protected void configure() {
bind(RestyGwtConfig.class).asEagerSingleton();
install(new DefaultModule.Builder()//
.defaultPlace(Routing.HOME.url)//
.errorPlace(Routing.ERROR.url)//
.unauthorizedPlace(Routing.LOGIN.url)//
.tokenFormatter(RouteTokenFormatter.class).build());
install(new AppModule());
// install(new
// GinFactoryModuleBuilder().build(AssistedInjectionFactory.class));
bind(CurrentUser.class).in(Singleton.class);
bind(IsAdminGatekeeper.class).in(Singleton.class);
bind(UserLoginGatekeeper.class).in(Singleton.class);
// Google Analytics
// bindConstant().annotatedWith(GaAccount.class).to("UA-8319339-6");
// Load and inject CSS resources
bind(ResourceLoader.class).asEagerSingleton();
}
}
和:
public class RestyGwtConfig {
static {
// GWT.log("--> RestyGwtConfig -> setDispatcher");
Defaults.setDispatcher(new RestyDispatcher());
// GWT.log("--> RestyGwtConfig -> setServiceRoot");
Defaults.setServiceRoot(new Resource(GWT.getModuleBaseURL()).resolve(ServiceRouting.SERVICE_ROOT).getUri());
UserCredentials.INSTANCE.setUserName("ronan");
UserCredentials.INSTANCE.setPassword("password");
}
}
最佳答案
您如何以及在何处创建您的ForbiddenDispatcherFilter
?
您可以使用guice的AssistedInjection将PlaceManager
注入到ForbiddenDispatcherCallback
中。
public class ForbiddenDispatcherCallback implements RequestCallback {
protected RequestCallback requestCallback;
protected PlaceManager placeManager;
@Inject
public ForbiddenDispatcherCallback(PlaceManager placeManager, @Assisted Method method) {
this.placeManager = placeManager;
this.requestCallback = method.builder.getCallback();
}
}
您需要定义一个工厂接口:
public interface AssistedInjectionFactory {
ForbiddenDispatcherCallback createForbiddenCallback(Method method);
}
在
configure
的ClientModule
方法中,您需要调用:install(new GinFactoryModuleBuilder().build(AssistedInjectionFactory.class));
然后,您可以通过以下方式实例化您的课程:
public class ForbiddenDispatcherFilter implements DispatcherFilter {
AssistedInjectionFactory factory;
@Inject
public ForbiddenDispatcherFilter(AssistedInjectionFactory factory)
{
this.factory = factory;
}
@Override
public boolean filter(Method method, RequestBuilder builder) {
builder.setCallback(factory.AssistedInjectionFactory(method))
return true;
}
}
当然,这要求您还注入
ForbiddenDispatcherFilter
。编辑:
您可以尝试将
RestyDispatcher
传递给RestyGWTConfig
的构造函数:public class RestyGwtConfig {
@Inject
public RestyGwtConfig(RestyDispatcher dispatcher) {
Defaults.setDispatcher(dispatcher);
}
static {
// GWT.log("--> RestyGwtConfig -> setServiceRoot");
Defaults.setServiceRoot(new Resource(GWT.getModuleBaseURL()).resolve(ServiceRouting.SERVICE_ROOT).getUri());
UserCredentials.INSTANCE.setUserName("ronan");
UserCredentials.INSTANCE.setPassword("password");
}
}
RestyDispatcher
看起来像这样:public class RestyDispatcher extends DefaultFilterawareDispatcher {
@Inject
public RestyDispatcher(ForbiddenDispatcherFilter filter) {
addFilter(filter);
addFilter(new BasicAuthHeaderDispatcherFilter());
}
@Override
public Request send(Method method, RequestBuilder builder) throws RequestException {
return super.send(method, builder);
}
}
关于java - 除了构造函数的@Inject注释外,实现GWTP placeManager的其他方法,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/35770706/