spring cloud gateway sentinel 持久化规则到nacos 启动报错 Err

我以前也有和你一样的问题。您需要设置ds.nacos.username和ds.nacos.密码。 像这样：

  datasource:
    ds: 
      nacos:
        server-addr: xxx
        username: nacos
        password: nacos

错误堆栈

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ds1-sentinel-nacos-datasource': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:178) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1821) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1266) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.registerBean(SentinelDataSourceHandler.java:203) ~[spring-cloud-starter-alibaba-sentinel-2.2.2.RELEASE.jar:2.2.2.RELEASE] at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.lambda$afterSingletonsInstantiated$0(SentinelDataSourceHandler.java:93) ~[spring-cloud-starter-alibaba-sentinel-2.2.2.RELEASE.jar:2.2.2.RELEASE] at java.util.TreeMap.forEach(TreeMap.java:1005) [?:1.8.0_191] at com.alibaba.cloud.sentinel.custom.SentinelDataSourceHandler.afterSingletonsInstantiated(SentinelDataSourceHandler.java:80) [spring-cloud-starter-alibaba-sentinel-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:912) [spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) [spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) [spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE] at com.che300.gamma.Application.main(Application.java:25) [classes/:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_191] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.7.RELEASE.jar:2.2.7.RELEASE] Caused by: java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:460) ~[?:1.8.0_191] at java.util.Properties.setProperty(Properties.java:166) ~[?:1.8.0_191] at com.alibaba.cloud.sentinel.datasource.factorybean.NacosDataSourceFactoryBean.getObject(NacosDataSourceFactoryBean.java:70) ~[spring-cloud-alibaba-sentinel-datasource-2.2.2.RELEASE.jar:2.2.2.RELEASE] at com.alibaba.cloud.sentinel.datasource.factorybean.NacosDataSourceFactoryBean.getObject(NacosDataSourceFactoryBean.java:34) ~[spring-cloud-alibaba-sentinel-datasource-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:171) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE] ... 24 more

原回答者GitHub用户boailiu