【Dubbo】no provider available for the service错误解决方案
2017-11-09 19:48
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在分布式项目中用Dubbo发生No provider available for the service错误解决方案:
Failed to check the status of the service com.taotao.service.ItemService. No provider available for the service原因:
Dubbo默认(缺省)会在启动时检查依赖的服务是否可用,不可用时会抛出异常,阻止Spring初始化完成,以便上线时,能及早发现问题,默认check=true。如果你的Spring容器是懒加载的,或者通过API编程延迟引用服务,请关闭check,否则服务临时不可用时,会抛出异常,拿到null引用,如果check=false,总是会返回引用,当服务恢复时,能自动连上。
可以通过check=”false”关闭检查,比如,测试时,有些服务不关心,或者出现了循环依赖,必须有一方先启动。
1、关闭某个服务的启动时检查:(没有提供者时报错) <dubbo:reference interface="com.taotao.ItemService" check="false" /> 2、关闭所有服务的启动时检查:(没有提供者时报错) 写在定义服务消费者一方 <dubbo:consumer check="false" /> 3、关闭注册中心启动时检查:(注册订阅失败时报错) <dubbo:registry check="false" />
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