我的 java 应用程序抛出一个异常，显示 Invalid BSON field name Name

Question

我有这个代码：

public class UpdateShoe {

MongoClient mongoClient = MongoClients.create();
MongoDatabase db = mongoClient.getDatabase("MirandasShoes");
MongoCollection<Document> collection = db.getCollection("Shoes");
MongoCursor<Document> cursor = collection.find().iterator();

public void UpdateShoe(Shoe sfilter, Shoe snew) {
    Document sfilterdoc = new Document();
    sfilterdoc.append("_id", sfilter.getId());
    sfilterdoc.append("Name", sfilter.getName());
    sfilterdoc.append("Brand", sfilter.getBrand());
    sfilterdoc.append("Type", sfilter.getType());
    sfilterdoc.append("Color", sfilter.getColor());
    sfilterdoc.append("Size", sfilter.getSize());
    sfilterdoc.append("Price", sfilter.getPrice());
    
    Document snewdoc = new Document();
    snewdoc.append("Name", snew.getName());
    snewdoc.append("Brand", snew.getBrand());
    snewdoc.append("Type", snew.getType());
    snewdoc.append("Color", snew.getColor());
    snewdoc.append("Size", snew.getSize());
    snewdoc.append("Price", snew.getPrice());
    
    this.collection.updateOne(sfilterdoc, snewdoc);
}

}

当我点击更新按钮时，它抛出异常，显示无效的 BSON 字段名称名称。在智能感知中，它指定参数必须是 bson 并且我正在使用文档，但在在线文档中主要使用文档，那么为什么它会抛出异常，我的代码中有什么问题吗？

这是我点击更新按钮时的控制台输出：

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Invalid BSON field name Name
    at org.bson.AbstractBsonWriter.writeName(AbstractBsonWriter.java:532)
    at com.mongodb.internal.connection.BsonWriterDecorator.writeName(BsonWriterDecorator.java:193)
    at org.bson.codecs.DocumentCodec.writeMap(DocumentCodec.java:198)
    at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:141)
    at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:45)
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)
    at com.mongodb.operation.BulkWriteBatch$WriteRequestEncoder.encode(BulkWriteBatch.java:403)
    at com.mongodb.operation.BulkWriteBatch$WriteRequestEncoder.encode(BulkWriteBatch.java:375)
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
    at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)
    at com.mongodb.internal.connection.BsonWriterHelper.writeDocument(BsonWriterHelper.java:75)
    at com.mongodb.internal.connection.BsonWriterHelper.writePayload(BsonWriterHelper.java:59)
    at com.mongodb.internal.connection.CommandMessage.encodeMessageBodyWithMetadata(CommandMessage.java:147)
    at com.mongodb.internal.connection.RequestMessage.encode(RequestMessage.java:138)
    at com.mongodb.internal.connection.CommandMessage.encode(CommandMessage.java:61)
    at com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:248)
    at com.mongodb.internal.connection.UsageTrackingInternalConnection.sendAndReceive(UsageTrackingInternalConnection.java:99)
    at com.mongodb.internal.connection.DefaultConnectionPool$PooledConnection.sendAndReceive(DefaultConnectionPool.java:450)
    at com.mongodb.internal.connection.CommandProtocolImpl.execute(CommandProtocolImpl.java:72)
    at com.mongodb.internal.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:218)
    at com.mongodb.internal.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:269)
    at com.mongodb.internal.connection.DefaultServerConnection.command(DefaultServerConnection.java:131)
    at com.mongodb.operation.MixedBulkWriteOperation.executeCommand(MixedBulkWriteOperation.java:435)
    at com.mongodb.operation.MixedBulkWriteOperation.executeBulkWriteBatch(MixedBulkWriteOperation.java:261)
    at com.mongodb.operation.MixedBulkWriteOperation.access$700(MixedBulkWriteOperation.java:72)
    at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:205)
    at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:196)
    at com.mongodb.operation.OperationHelper.withReleasableConnection(OperationHelper.java:501)
    at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:196)
    at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:71)
    at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:206)
    at com.mongodb.client.internal.MongoCollectionImpl.executeSingleWriteRequest(MongoCollectionImpl.java:1048)
    at com.mongodb.client.internal.MongoCollectionImpl.executeUpdate(MongoCollectionImpl.java:1032)
    at com.mongodb.client.internal.MongoCollectionImpl.updateOne(MongoCollectionImpl.java:617)
    at com.mongodb.client.internal.MongoCollectionImpl.updateOne(MongoCollectionImpl.java:612)
    at DAL.UpdateShoe.UpdateShoe(UpdateShoe.java:45)
    at UI.UpdateShoeUI.btnUpdateShoeActionPerformed(UpdateShoeUI.java:162)
    at UI.UpdateShoeUI.access$100(UpdateShoeUI.java:18)
    at UI.UpdateShoeUI$2.actionPerformed(UpdateShoeUI.java:79)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6539)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
    at java.awt.Component.processEvent(Component.java:6304)
    at java.awt.Container.processEvent(Container.java:2239)
    at java.awt.Component.dispatchEventImpl(Component.java:4889)
    at java.awt.Container.dispatchEventImpl(Container.java:2297)
    at java.awt.Component.dispatchEvent(Component.java:4711)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
    at java.awt.Container.dispatchEventImpl(Container.java:2283)
    at java.awt.Window.dispatchEventImpl(Window.java:2746)
    at java.awt.Component.dispatchEvent(Component.java:4711)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
    at java.awt.EventQueue$4.run(EventQueue.java:733)
    at java.awt.EventQueue$4.run(EventQueue.java:731)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

Answer 1

您提到的代码相当于：

db.col.updateOne({"_id":"id"...etc.},{"name":"newName"...etc.}) 

您在这里缺少$set命令。所以你需要做的是：

Document snewDoc = new Document();
snewdoc.append("Name", snew.getName());
snewdoc.append("Brand", snew.getBrand());
snewdoc.append("Type", snew.getType());
snewdoc.append("Color", snew.getColor());
snewdoc.append("Size", snew.getSize());
snewdoc.append("Price", snew.getPrice());
Document updateDoc = new Document("$set",snewDoc);
this.collection.updateOne(sfilterdoc, updateDoc);

上面等价于正确的格式，即：

db.col.updateOne({"_id":"id"...etc.},{"$set":{"name":"newName"...etc.}})