MongoDb Java APi-忽略批量导入中的错误

Question

Hi i'm importing Documents into mongodb with this function

WriteResult com.mongodb.DBCollection.insert(List<DBObject> list)

some inserts fail because the data violates an index. Is it possible to ignore these errors and continue with the other documents?

Exception in thread "main" com.mongodb.WriteConcernException: { "serverUsed" : "localhost:27017" , "ok" : 1 , "n" : 0 , "err" : "insertDocument :: caused by :: 16755 Can't extract geo keys from object, malformed geometry?: XXXXX , "code" : 16755}
    at com.mongodb.CommandResult.getWriteException(CommandResult.java:90)
    at com.mongodb.CommandResult.getException(CommandResult.java:79)
    at com.mongodb.DBCollectionImpl.translateBulkWriteException(DBCollectionImpl.java:314)
    at com.mongodb.DBCollectionImpl.insert(DBCollectionImpl.java:189)

Answer 1

对我有用的是：

wayCollection.insert(ways, new WriteConcern(0, 0, false, false, true));

Answer 2

If you're using MongoDB 2.6+ you can do an unordered bulk operation . If the error occurs when doing write operations, MongoDB will continue to process the remaining operations:

DBCollection coll = db.getCollection("test");
BulkWriteOperation bulk = coll.initializeUnorderedBulkOperation();
bulk.insert(new BasicDBObject("foo", 1));
bulk.insert(new BasicDBObject("bar", 2));
bulk.execute();

The downside to this approach is that you can't use it if your inserts needs to be executed in an order, but the upside is that the bulk inserts will be executed faster than by doing multiple inserts.

The additional benefit is that you can get the number of inserted documents from the BulkWriteResult object (returned from the execute method).

You can take a look at the Java documentation for bulk inserts here .

Edit: Just to be clear, I don't recommend that you ignore the errors, you should fix your data/inserts.

Edit 2 You can also execute a bulk operation with and set a write concern for the operation:

bulk.execute(new WriteConcern(0, 0, false, false, true));