Java Spring boot反应式和mongodb'；命令插入需要身份验证'；

我使用SpringBoot2.3.1和webflux以及docker容器中的MongoDB创建了一个项目。项目正常启动，并使用application.properties中声明的参数在MongoDB中连接

当我尝试执行CRUD操作“insert”时，问题就出现了。将生成以下日志：

500 Server Error for HTTP POST "/configuracao"

org.springframework.data.mongodb.UncategorizedMongoDbException: Command failed with error 13 (Unauthorized): 'command insert requires authentication' on server 127.0.0.1:27017. The full response is {"ok": 0.0, "errmsg": "command insert requires authentication", "code": 13, "codeName": "Unauthorized"}; nested exception is com.mongodb.MongoCommandException: Command failed with error 13 (Unauthorized): 'command insert requires authentication' on server 127.0.0.1:27017. The full response is {"ok": 0.0, "errmsg": "command insert requires authentication", "code": 13, "codeName": "Unauthorized"}
    at org.springframework.data.mongodb.core.MongoExceptionTranslator.translateExceptionIfPossible(MongoExceptionTranslator.java:133) ~[spring-data-mongodb-3.0.1.RELEASE.jar:3.0.1.RELEASE]
    Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Assembly trace from producer [reactor.core.publisher.MonoError] :
    reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onError(MonoFlatMapMany.java:247)
    com.mongodb.reactivestreams.client.internal.AbstractSubscription.onError(AbstractSubscription.java:139)
Error has been observed at the following site(s):
    |_ MonoFlatMapMany$FlatMapManyInner.onError ⇢ at com.mongodb.reactivestreams.client.internal.AbstractSubscription.onError(AbstractSubscription.java:139)
    |_                          Flux.onErrorMap ⇢ at org.springframework.data.mongodb.core.ReactiveMongoTemplate.createFlux(ReactiveMongoTemplate.java:651)
    |_                                Flux.last ⇢ at org.springframework.data.mongodb.core.ReactiveMongoTemplate.insertDocument(ReactiveMongoTemplate.java:1578)
    |_                                 Mono.map ⇢ at org.springframework.data.mongodb.core.ReactiveMongoTemplate.insertDocument(ReactiveMongoTemplate.java:1578)
    |_                             Mono.flatMap ⇢ at org.springframework.data.mongodb.core.ReactiveMongoTemplate.lambda$doInsert$35(ReactiveMongoTemplate.java:1344)
    |_                             Mono.flatMap ⇢ at org.springframework.data.mongodb.core.ReactiveMongoTemplate.doInsert(ReactiveMongoTemplate.java:1342)
    |_                                 Mono.map ⇢ at org.springframework.http.codec.json.AbstractJackson2Encoder.encode(AbstractJackson2Encoder.java:120)
    |_                                Mono.flux ⇢ at org.springframework.http.codec.json.AbstractJackson2Encoder.encode(AbstractJackson2Encoder.java:121)
    |_                       Flux.singleOrEmpty ⇢ at org.springframework.http.codec.EncoderHttpMessageWriter.write(EncoderHttpMessageWriter.java:121)
    |_                       Mono.switchIfEmpty ⇢ at org.springframework.http.codec.EncoderHttpMessageWriter.write(EncoderHttpMessageWriter.java:122)
    |_                             Mono.flatMap ⇢ at org.springframework.http.codec.EncoderHttpMessageWriter.write(EncoderHttpMessageWriter.java:126)
    |_                               checkpoint ⇢ Handler br.com.example.exampleapplication.controller.ConfiguracaoController#save(Configuracao) [DispatcherHandler]
    |_                             Mono.flatMap ⇢ at org.springframework.web.reactive.DispatcherHandler.lambda$handleResult$5(DispatcherHandler.java:172)
    |_                       Mono.onErrorResume ⇢ at org.springframework.web.reactive.DispatcherHandler.handleResult(DispatcherHandler.java:171)
    |_                             Mono.flatMap ⇢ at org.springframework.web.reactive.DispatcherHandler.handle(DispatcherHandler.java:147)
    |_                               Mono.defer ⇢ at org.springframework.web.server.handler.DefaultWebFilterChain.filter(DefaultWebFilterChain.java:119)
    |_                         Mono.doOnSuccess ⇢ at org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter.filter(MetricsWebFilter.java:78)
    |_                           Mono.doOnError ⇢ at org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter.filter(MetricsWebFilter.java:79)
    |_                   Mono.transformDeferred ⇢ at org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter.filter(MetricsWebFilter.java:73)
    |_                               checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
    |_                               Mono.defer ⇢ at org.springframework.web.server.handler.DefaultWebFilterChain.filter(DefaultWebFilterChain.java:119)
    |_                               Mono.error ⇢ at org.springframework.web.server.handler.ExceptionHandlingWebHandler$CheckpointInsertingHandler.handle(ExceptionHandlingWebHandler.java:98)
    |_                               checkpoint ⇢ HTTP POST "/configuracao" [ExceptionHandlingWebHandler]
    |_                       Mono.onErrorResume ⇢ at org.springframework.web.server.handler.ExceptionHandlingWebHandler.handle(ExceptionHandlingWebHandler.java:77)

阅读本文，我按照建议为mongodb配置创建了一个自定义Bean：

@Configuration
@EnableTransactionManagement
@EnableReactiveMongoRepositories
public class MongoConfiguration extends AbstractReactiveMongoConfiguration {

    @Value("${spring.data.mongodb.database}")
    private String database;

    @Bean
    public MongoClient mongoClient() {
        return MongoClients.create("mongodb://exampleapp:example@localhost:27017/exampledb");
    }

//    @Bean
//    public ReactiveMongoDatabaseFactory reactiveMongoDatabaseFactory() {
//        return new SimpleReactiveMongoDatabaseFactory(MongoClients.create("mongodb://exampleapp:example@localhost:27017/exampledb"), database);
//    }

    @Override
    protected String getDatabaseName() {
        return database;
    }

我尝试使用MongoClient和ReactiveMongoDatabaseFactory，但无法执行save方法。始终返回“命令插入需要身份验证”

对于docker容器，我使用以下脚本在容器启动后初始化数据库：

db.auth('mongoadmin', 'mongoadmin')
db = db.getSiblingDB('exampledb')
db.createUser(
    {
        user: "exampleapp",
        pwd: "example",
        roles: [
            {
                role: "readWrite",
                db: "exampledb"
            }
        ]
    }
)

应用程序在启动时成功连接，我可以使用mongo express或其他gui工具连接数据库

我做错了什么？我如何配置这个spring boot反应式应用程序以适当地与mongodb集成

---

提前感谢。

以防您仍有此问题。我遇到了一个类似的问题，并通过使用reactiveMongoClient（）而不是mongoClient（）解决了它

替换：

 @Bean
public MongoClient mongoClient() {
    return MongoClients.create("mongodb://exampleapp:example@localhost:27017/exampledb");
}

与：

您的bean应该如下所示：

@EnableReactiveMongoRepositories
@Slf4j
public class MongoDBCConfig extends 
AbstractReactiveMongoConfiguration {

@Override
protected String getDatabaseName() {
    return "dbname";
}

@Override
public MongoClient reactiveMongoClient() {
    return MongoClients.create("mongodb://username:password@localhost:27017/authSource=auth-source");
    }
}

---

在properties/yaml文件spring.data.mongodb.uri=spring.data.mongodb.uri中应该有这样的属性=mongodb://root:root@localhost:27017/test也可以执行读取操作吗？MongoDB auto configure将为您设置客户端。@DhruvG感谢您的回复，并对长时间的响应表示抱歉。我删除了mongoClient方法，让spring实例化客户端，我在application.properties中添加了uri属性，就像您的示例一样。在此之后，错误发生了变化。现在是：由：com.mongodb.MongoSecurityException：验证MongoCredential{mechanism=SCRAM-SHA-256，userName='exampleapp'，source='exampledb'，password=，mechanismProperties=}的异常引起；我做了其他更改，在docker compose上添加了“命令：”--bind_ip_all“以允许其他请求来源。谢谢您的回复。正如@DhruvG所建议的，我删除了客户机实例化，让spring自动配置它。如果没有启用mongodb身份验证，则可以很好地工作，但是，如果启用了mongodb身份验证，则spring引导会在启动时连接，但在尝试执行插入时失败。你是如何使用reactiveMongoClient（）进行配置的？老兄，你太棒了！事实上，这项工作花了一周的时间，经过几次失败的尝试，现在终于成功了。

@EnableReactiveMongoRepositories
@Slf4j
public class MongoDBCConfig extends 
AbstractReactiveMongoConfiguration {

@Override
protected String getDatabaseName() {
    return "dbname";
}

@Override
public MongoClient reactiveMongoClient() {
    return MongoClients.create("mongodb://username:password@localhost:27017/authSource=auth-source");
    }
}