Question

我有一个在Atlas上运行的mongodb实例，一个在GAE上运行的Spring Boot应用程序试图访问该数据库。我在本地运行它没有问题，但是在GAE上运行时，我在日志中看到此错误。

com.mongodb.MongoConfigurationException: Unable to look up SRV record for host xyz-abc-delta-james.gcp.mongodb.net

这是我对mongodb的春季启动配置

spring.data.mongodb.authentication-database=admin
spring.data.mongodb.field-naming-strategy=org.springframework.data.mapping.model.CamelCaseAbbreviatingFieldNamingStrategy
spring.data.mongodb.uri=mongodb+srv://<user>:<password>@xyz-abc-delta-james.gcp.mongodb.net/test?retryWrites=true

我试图在GAE文档中找到一些东西，但是没有这种错误的踪迹。

Failed to instantiate [com.mongodb.MongoClient]: Factory method 'mongo' threw exception; nested exception is com.mongodb.MongoConfigurationException: Unable to look up SRV record for host xyz-abc-delta-james.gcp.mongodb.net
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1341)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:572)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:333)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:157)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:137)
    at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:91)
    at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172)
    at org.eclipse.jetty.plus.annotation.ContainerInitializer.callStartup(ContainerInitializer.java:140)
    at org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart(ServletContainerInitializersStarter.java:63)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:330)
    at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1406)
    at com.google.apphosting.runtime.jetty9.AppEngineWebAppContext.startWebapp(AppEngineWebAppContext.java:159)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1368)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:778)
    at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:262)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:522)
    at com.google.apphosting.runtime.jetty9.AppEngineWebAppContext.doStart(AppEngineWebAppContext.java:116)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
    at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:244)
    at com.google.apphosting.runtime.jetty9.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:182)
    at com.google.apphosting.runtime.jetty9.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:109)
    at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchServletRequest(JavaRuntime.java:692)
    at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.dispatchRequest(JavaRuntime.java:654)
    at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:624)
    at com.google.apphosting.runtime.JavaRuntime$NullSandboxRequestRunnable.run(JavaRuntime.java:818)
    at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:274)
    at java.lang.Thread.run(Thread.java:745)

有人遇到这样的事情吗？这可能是GAE对网络的限制吗？

谢谢！

注意事项：我已经在serverfault上发布了此内容，但未收到任何回复。

Answer 1

显然，GAE不支持mogodb uri的最新格式（3.6x及更高版本），在切换到相当长的uri表示的旧版（3.4x及更高版本）之后，一切都可以无缝运行。 / p>

spring.data.mongodb.uri=mongodb://<user>:<password>@xyz-abc-delta-james.gcp.mongodb.net:27017,foo-bar-shard-00-01-tlxzf.gcp.mongodb.net:27017,foo-bar-shard-00-02-tlxzf.gcp.mongodb.net:27017/test?ssl=true&replicaSet=foo-bar-shard-0&authSource=admin&retryWrites=true

由于Spring引导程序对3.6x版本具有内部依赖性，因此我必须手动为3.4版本添加mongodb依赖性。

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.mongodb</groupId>
                <artifactId>mongo-java-driver</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongo-java-driver</artifactId>
        <version>3.4.3</version>
    </dependency>

Answer 2

我找到了解决方法：

您必须在Google Cloud Console中解锁默认的传出TCP端口（MongoDB Atlas的默认值为27017）。

更精确地：在网络>> VPC网络>>防火墙部分中，只需添加一个new rule for mongo traffic。

GAE无法查找mongodb地图集实例的SRV记录

2 个答案: