Interface DispatchExceptionHandler

All Known Implementing Classes:

RequestMappingHandlerAdapter

public interface DispatchExceptionHandler

Contract to map a Throwable to a HandlerResult.

Supported by DispatcherHandler when used in the following ways:

• Set on a HandlerResult, allowing a HandlerAdapter to apply its exception handling to deferred exceptions from asynchronous return values, and to response rendering.
• Implemented by a HandlerAdapter in order to handle exceptions that occur before a request is mapped to a handler, or for unhandled errors from a handler.

Since:

6.0

Author:

Rossen Stoyanchev

See Also:

• HandlerAdapter
• HandlerResult.setExceptionHandler(DispatchExceptionHandler)

Method Summary

Modifier and Type	Method	Description
reactor.core.publisher.Mono<HandlerResult>	handleError(ServerWebExchange exchange, Throwable ex)	Handle the given exception, mapping it to a HandlerResult that can then be used to render an HTTP response.

Method Details

handleError

reactor.core.publisher.Mono<HandlerResult> handleError(ServerWebExchange exchange,
 Throwable ex)

Handle the given exception, mapping it to a HandlerResult that can then be used to render an HTTP response.

Parameters:

exchange - the current exchange

ex - the exception to handle

Returns:

a Mono that emits a HandlerResult or an error signal with the original exception if it remains not handled