package jnpf.handler;
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import jnpf.util.JsonUtil;
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import jnpf.base.ActionResult;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.boot.web.reactive.error.ErrorWebExceptionHandler;
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import org.springframework.cloud.gateway.support.NotFoundException;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.annotation.Order;
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import org.springframework.core.io.buffer.DataBufferFactory;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.server.reactive.ServerHttpResponse;
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import org.springframework.web.server.ResponseStatusException;
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import org.springframework.web.server.ServerWebExchange;
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import reactor.core.publisher.Mono;
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/**
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* 网关统一异常处理
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*
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* @author JNPF开发平台组
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* @version V3.1.0
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* @copyright 引迈信息技术有限公司（https://www.jnpfsoft.com）
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* @date 2021-03-24
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*/
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@Slf4j
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@Order(-1)
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@Configuration
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public class GatewayHandler implements ErrorWebExceptionHandler {
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@Override
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public Mono<Void> handle(ServerWebExchange exchange, Throwable ex) {
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ServerHttpResponse response = exchange.getResponse();
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if (exchange.getResponse().isCommitted()) {
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return Mono.error(ex);
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}
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String msg;
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if (ex instanceof NotFoundException) {
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msg = "服务未找到";
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} else if (ex instanceof ResponseStatusException) {
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ResponseStatusException responseStatusException = (ResponseStatusException) ex;
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msg = responseStatusException.getMessage();
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} else {
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msg = "内部服务器错误";
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log.error(ex.getMessage(), ex);
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}
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response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
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response.setStatusCode(HttpStatus.OK);
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return response.writeWith(Mono.fromSupplier(() -> {
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DataBufferFactory bufferFactory = response.bufferFactory();
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ActionResult result = ActionResult.fail(msg);
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return bufferFactory.wrap(JsonUtil.getObjectToString(result).getBytes());
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}));
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}
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}
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