Quarkus应用程序无法为MongoDB客户端找到编解码器

Question

使用MongoDB (Panache)运行夸克应用程序会显示启动时的警告，例如：

WARN  [io.qua.mon.run.MongoClients] (main) Unable to load the property codec provider class org.bson.codecs.pojo.EnumPropertyCodecProvider: java.lang.NoSuchMethodException: org.bson.codecs.pojo.EnumPropertyCodecProvider.<init>()
    at java.base/java.lang.Class.getConstructor0(Class.java:3349)
    at java.base/java.lang.Class.getConstructor(Class.java:2151)
    at io.quarkus.mongodb.runtime.MongoClients.getPropertyCodecProviders(MongoClients.java:440)
    at io.quarkus.mongodb.runtime.MongoClients.configureCodecRegistry(MongoClients.java:332)
    at io.quarkus.mongodb.runtime.MongoClients.createMongoConfiguration(MongoClients.java:255)
    at io.quarkus.mongodb.runtime.MongoClients.createReactiveMongoClient(MongoClients.java:115)
    at io.quarkus.mongodb.runtime.MongoClientRecorder.reactiveMongoClientSupplier(MongoClientRecorder.java:57)
    at io.quarkus.deployment.steps.MongoClientProcessor$generateClientBeans-1756432087.deploy_0(MongoClientProcessor$generateClientBeans-1756432087.zig:96)
    at io.quarkus.deployment.steps.MongoClientProcessor$generateClientBeans-1756432087.deploy(MongoClientProcessor$generateClientBeans-1756432087.zig:40)
    at io.quarkus.runner.ApplicationImpl.doStart(ApplicationImpl.zig:666)
    at io.quarkus.runtime.Application.start(Application.java:101)
    at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:101)
    at io.quarkus.runtime.Quarkus.run(Quarkus.java:66)
    at io.quarkus.runtime.Quarkus.run(Quarkus.java:42)
    at io.quarkus.runtime.Quarkus.run(Quarkus.java:119)
    at io.quarkus.runner.GeneratedMain.main(GeneratedMain.zig:29)

然后执行从数据库获取数据的操作(例如，查找)。在类似于此的循环中生成StackOverflow异常：

    at org.bson.internal.LazyCodec.encode(LazyCodec.java:38)
    at org.bson.BsonDocumentWrapper.getUnwrapped(BsonDocumentWrapper.java:195)
    at org.bson.BsonDocumentWrapper.entrySet(BsonDocumentWrapper.java:165)
    at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:112)
    at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:42)
    at org.bson.codecs.BsonCodec.encode(BsonCodec.java:55)
    at org.bson.codecs.BsonCodec.encode(BsonCodec.java:33)
    at org.bson.internal.LazyCodec.encode(LazyCodec.java:38)
    at org.bson.BsonDocumentWrapper.getUnwrapped(BsonDocumentWrapper.java:195)
    at org.bson.BsonDocumentWrapper.entrySet(BsonDocumentWrapper.java:165)
    at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:112)
    at org.bson.codecs.BsonDocumentCodec.encode(BsonDocumentCodec.java:42)

映射的对象包含一个ObjectId标识符。这些bean是在一个单独的项目中定义的，有一个jandex插件来对bean进行索引。

直接在项目POM文件上定义的Quarkus依赖项是：

    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-arc</artifactId>
    </dependency>
    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-mongodb-panache</artifactId>
    </dependency>
    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-resteasy</artifactId>
    </dependency>
    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-rest-client</artifactId>
    </dependency>
    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-smallrye-fault-tolerance</artifactId>
    </dependency>
    <dependency>
        <groupId>io.quarkus</groupId>
        <artifactId>quarkus-resteasy-jackson</artifactId>
    </dependency>

Answer 1

我发现了问题。错误地，bson库被添加到了jandex索引中。

将其从索引中删除将解决此问题。

在我们的例子中，它是在应用程序属性上声明的：

quarkus.index-dependency.bson.group-id=org.mongodb
quarkus.index-dependency.bson.artifact-id=bson

我删除了这些行，这个项目可以工作，但是我们看到了一个编译警告。

[WARNING] [io.quarkus.deployment.steps.ReflectiveHierarchyStep] Unable to properly register the hierarchy of the following classes for reflection as they are not in the Jandex index:
    - org.bson.types.ObjectId (source: RestClientProcessor > com.saaskun.api...)