# 常见问题 ## 微服务端如何获取appId等参数 ```java OpenContext openContext = ServiceContext.getCurrentContext().getOpenContext(); String appId = openContext.getAppId(); ``` ## Socket error occurred: `localhost/0:0:0:0:0:0:0:1:2181`: Connection refused 检查本地zookeeper有没启动,如果zookeeper在其他机器上,修改application-dev.yml ```yaml cloud: zookeeper: connect-string: ip:2181 ``` ## 如何关闭签名验证 - 针对某一个接口关闭签名验证 `@ApiMapping(value = "alipay.story.get", ignoreValidate = true)` - 针对所有接口关闭签名验证 ```java @Configuration public class ZuulConfig extends AlipayZuulConfiguration { static { ... ApiConfig.getInstance().setIgnoreValidate(true); ... } } ``` ## 注册到eureka显示hostname,非ip ```yaml eureka: instance: prefer-ip-address: true instance-id: ${spring.cloud.client.ip-address}:${server.port} ``` ```xml org.springframework.cloud spring-cloud-commons ``` 参考:https://www.jianshu.com/p/5ad8317961b7 ## 直接访问服务的swagger-ui.html ,提示access forbidden 找到微服务的`OpenServiceConfig.java`,重写内部类Swagger2中的swaggerAccessProtected()方法,返回false。线上请设置成true ```java // 开启文档 @Configuration @EnableSwagger2 public static class Swagger2 extends SwaggerSupport { @Override protected String getDocTitle() { return "故事API"; } @Override protected boolean swaggerAccessProtected() { return false; } } ``` ## 调试网关出现服务不可用 打断点调试,网关出现Read Timeout 参考:https://blog.csdn.net/qq_36872046/article/details/81058045 yml添加: ```yaml ribbon: # https://blog.csdn.net/qq_36872046/article/details/81058045 # 路由转发超时时间,毫秒,默认值1000,详见:RibbonClientConfiguration.DEFAULT_READ_TIMEOUT。 # 如果微服务端 处理时间过长,会导致ribbon read超时,解决办法将这个值调大一点 ReadTimeout: 60000 ```