使用Java和MongoDB創建'包含'查詢

Question

我試圖按照這個post在Java中創建「包含」查詢。問題是它給我一個錯誤。

此刻，我有以下代碼：

MongoClient mongoClient = null; 
DBCursor cursor = null; 

mongoClient = new MongoClient("localhost" , 27017); 
DB db = mongoClient.getDB("bd-films"); 
DBCollection coll = db.getCollection("films"); 

DBObject query = new BasicDBObject({"title" : {$regex : "name"}});   
cursor = coll.find(query); 

它給我的錯誤是在「查詢」行：

Syntax error on token ""title"", invalid Label 
Syntax error, insert ";" to complete Statement 
Syntax error on token ")", delete this token 

我用光標將其插入一個JTable 。
驅動程序：mongo-java-driver-3.4.2
在此先感謝。

Answer 1

使用新的Document和MongoCollection api's for java驅動3.x版本。

MongoClient mongoClient = new MongoClient("localhost", 27017); 
MongoDatabase db = mongoClient.getDatabase("bd-films"); 
MongoCollection<Document> coll = db.getCollection("films"); 
List<Document> results = coll.find(Filters.regex("title", "name")).into(new ArrayList<>()) 

對於accesssing MongoCursor，

FindIterable<Document> results = coll.find(Filters.regex("title", "name")); 
MongoCursor<Document> cursor = results.iterator();