[英]Spring WebFlux: How to access Request Body in HandlerFilterFunction
我正在尝试从 WebFlux 的HandlerFunctionFunction
访问请求正文,但我得到java.lang.IllegalStateException: Only one connection receive subscriber allowed.
.
我想做类似于下面的代码块的事情
public class ExampleHandlerFilterFunction
implements HandlerFilterFunction<ServerResponse, ServerResponse> {
@Override
public Mono<ServerResponse> filter(ServerRequest serverRequest,
HandlerFunction<ServerResponse> handlerFunction) {
if (serverRequest.pathVariable("name").equalsIgnoreCase("test")) {
return serverRequest.bodyToMono(Player.class)
.doOnNext(loggerService :: logAndDoSomethingElse)
.then(handlerFunction.handle(serverRequest);
}
return handlerFunction.handle(serverRequest);
}
}
我也试过serverRequest.bodyToMono(Player.class).cache()
,但没有用。
更新:添加处理程序和路由器功能
处理器 Function
@Component
public class PlayerHandler {
@Autowired
private final playerRepository;
public PlayerHandler(PlayerRepository palyerRepository) {
this.palyerRepository = playerRepository;
}
public Mono<ServerResponse> savePlayer(ServerRequest request) {
Mono<String> id = request.bodyToMono(Player.class)
.map(playerRepository::save)
.map(Player::getId);
return ok().body(id, String.class);
}
}
路由器 function
@Bean
public RouterFunction<ServerResponse> route(PlayerHandler playerHandler) {
return RouterFunctions
.route(POST("/players/"), playerHandler::save)
.filter(new ExampleHandlerFilterFunction());
}
记录器服务
public Mono<Void> T logAndDoSomethingElse(T t){
---- auditing business logic----
return loggerRepository.save(asJsonb);
}
有人能帮我吗? 谢谢
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.server.HandlerFilterFunction;
import org.springframework.web.reactive.function.server.HandlerFunction;
import org.springframework.web.reactive.function.server.ServerRequest;
import org.springframework.web.reactive.function.server.ServerResponse;
import reactor.core.publisher.Mono;
@Component
public class FundsAuthorizationFilter implements HandlerFilterFunction<ServerResponse, ServerResponse> {
@Override
public Mono<ServerResponse> filter(ServerRequest request, HandlerFunction<ServerResponse> handlerFunction) {
String block = request.bodyToMono(String.class).block();
JSONObject jsonObj = new JSONObject(block);
ServerRequest.Builder newRequestBuilder = ServerRequest.from(request);
newRequestBuilder.body(block);
return handlerFunction.handle(newRequestBuilder.build());
}
}
我找到了一个解决方案,即克隆 serverRequest 并将正文设置为新请求
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