package dockerx.spring.boot.rxjava.valuehandler; import dockerx.spring.boot.rxjava.asyncresult.SingleDeferredResult; import io.reactivex.Single; import org.springframework.core.MethodParameter; import org.springframework.web.context.request.NativeWebRequest; import org.springframework.web.context.request.async.WebAsyncUtils; import org.springframework.web.method.support.AsyncHandlerMethodReturnValueHandler; import org.springframework.web.method.support.ModelAndViewContainer; /** * 单值返回值(也就是单值源)处理 * @author Author 知秋 * @email [email protected] * @time Created by Auser on 2018/3/27 21:28. */ public class SingleReturnValueHandler implements AsyncHandlerMethodReturnValueHandler { public boolean isAsyncReturnValue(Object returnValue, MethodParameter returnType) { return returnValue != null && supportsReturnType(returnType); } public boolean supportsReturnType(MethodParameter returnType) { return Single.class.isAssignableFrom(returnType.getParameterType()); } public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception { if (returnValue == null) { mavContainer.setRequestHandled(true); return; } final Single<?> single = Single.class.cast(returnValue); WebAsyncUtils.getAsyncManager(webRequest) .startDeferredResultProcessing(new SingleDeferredResult(single), mavContainer); } }