GatewayExceptionHandler.java
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package com.huaheng.gateway.handler;
import org.springframework.cloud.gateway.support.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.web.reactive.error.ErrorWebExceptionHandler;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.web.server.ResponseStatusException;
import org.springframework.web.server.ServerWebExchange;
import com.alibaba.fastjson.JSON;
import com.huaheng.common.core.domain.R;
import reactor.core.publisher.Mono;
/**
* 网关统一异常处理
*
* @author ruoyi
*/
@Order(-1)
@Configuration
public class GatewayExceptionHandler implements ErrorWebExceptionHandler
{
private static final Logger log = LoggerFactory.getLogger(GatewayExceptionHandler.class);
@Override
public Mono<Void> handle(ServerWebExchange exchange, Throwable ex)
{
ServerHttpResponse response = exchange.getResponse();
if (exchange.getResponse().isCommitted())
{
return Mono.error(ex);
}
String msg;
if (ex instanceof NotFoundException)
{
msg = "服务未找到";
}
else if (ex instanceof ResponseStatusException)
{
ResponseStatusException responseStatusException = (ResponseStatusException) ex;
msg = responseStatusException.getMessage();
}
else
{
msg = "内部服务器错误";
}
log.error("[网关异常处理]请求路径:{},异常信息:{}", exchange.getRequest().getPath(), ex.getMessage());
response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
response.setStatusCode(HttpStatus.OK);
return response.writeWith(Mono.fromSupplier(() -> {
DataBufferFactory bufferFactory = response.bufferFactory();
return bufferFactory.wrap(JSON.toJSONBytes(R.fail(msg)));
}));
}
}