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# 常见问题
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## Socket error occurred: `localhost/0:0:0:0:0:0:0:1:2181`: Connection refused
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检查本地zookeeper有没启动，如果zookeeper在其他机器上，修改application-dev.yml
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```yaml
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cloud:
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zookeeper:
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connect-string: ip:2181
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```
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## 如何关闭签名验证
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- 针对某一个接口关闭签名验证
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`@ApiMapping(value = "alipay.story.get", ignoreValidate = true)`
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- 针对所有接口关闭签名验证
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```java
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@Configuration
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public class ZuulConfig extends AlipayZuulConfiguration {
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static {
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...
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ApiConfig.getInstance().setIgnoreValidate(true);
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...
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}
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}
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```
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## 注册到eureka显示hostname，非ip
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```yaml
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eureka:
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instance:
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prefer-ip-address: true
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instance-id: ${spring.cloud.client.ip-address}:${server.port}
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```
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```xml
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-commons</artifactId>
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</dependency>
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```
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参考：https://www.jianshu.com/p/5ad8317961b7
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