DataBufferLimitException: Exceeded limit on max bytes to buffer webflux eroor

问题

when i send a file et receive a array of byte i have alway a probleme with webflux to receive the array. the error thrown :

org.springframework.core.io.buffer.DataBufferLimitException: Exceeded limit on max bytes to buffer : 262144
    at org.springframework.core.io.buffer.LimitedDataBufferList.raiseLimitException(LimitedDataBufferList.java:101)
    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException

Do you now how to resolve that in webflux ?

回答1:

I suppose this issue is about adding a new spring.codec.max-in-memory-size configuration property in Spring Boot. Add it to the properties like:

spring:
  codec:
    max-in-memory-size: 10MB

回答2:

i was getting this error for a simple RestController (i post a large json string).

here is how i successfully changed the maxInMemorySize

import org.springframework.context.annotation.Configuration;
import org.springframework.http.codec.ServerCodecConfigurer;
import org.springframework.web.reactive.config.ResourceHandlerRegistry;
import org.springframework.web.reactive.config.WebFluxConfigurer;

@Configuration
public class WebfluxConfig implements WebFluxConfigurer {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        registry.addResourceHandler("/swagger-ui.html**")
            .addResourceLocations("classpath:/META-INF/resources/");

        registry.addResourceHandler("/webjars/**")
            .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    public void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
        configurer.defaultCodecs().maxInMemorySize(16 * 1024 * 1024);
    }
}

this was surprisingly hard to find

回答3:

Set the maximum bytes (in megabytes) in you spring boot configuration file like below:

spring.codec.max-in-memory-size=20MB

回答4:

This workerd for me

Create a bean in your one of the configuration class or the main Springbootapplication class

@Bean
public WebClient getWebClientBuilder(){
    return   WebClient.builder().exchangeStrategies(ExchangeStrategies.builder()
            .codecs(configurer -> configurer
                      .defaultCodecs()
                      .maxInMemorySize(16 * 1024 * 1024))
                    .build())
                  .build();
}

Next go to your desired class where you want to use the webclient

  @RestController / @Bean/ @Service
   public class PaySharpGatewayController {
        @Autowired
        WebClient webClient;

        public void test(){
         String out = webClient
                      .get()
                      .uri("end point of an API")
                      .retrieve()
                      .bodyToMono(String.class)
                     .block();

         sysout(out)
        }

来源：https://stackoverflow.com/questions/59735951/databufferlimitexception-exceeded-limit-on-max-bytes-to-buffer-webflux-eroor

标签

java

Spring

webclient

spring-webflux