Question

java用spring管理mongodb 怎么修改mongodb中list中的数据

Answer 1

MongoClient client = new MongoClient("192.168.0.110", 27017);
DBCollection dbCollection = client.getDB("test").getCollection("update_array");
dbCollection.drop();
dbCollection = client.getDB("test").getCollection("update_array");
BasicDBObject dbObject = new BasicDBObject();
dbObject.append("id", 583739819102582565L).append("kids", Arrays.asList("1", "2", "3"));
dbCollection.insert(dbObject);
System.out.println(dbCollection.findOne());
BasicDBObject dbObject2 = new BasicDBObject(dbObject);
dbObject2.append("kids", Arrays.asList("1", "2", "3", "4"));
dbCollection.update(dbObject, dbObject2);
System.out.println(dbCollection.findOne());

测试结果：

{ "_id" : { "$oid" : "546f37f7d01de241a1e143e8"} , "id" : 583739819102582565 , "kids" : [ "1" , "2" , "3"]}

{ "_id" : { "$oid" : "546f37f7d01de241a1e143e8"} , "id" : 583739819102582565 , "kids" : [ "1" , "2" , "3" , "4"]}

<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>2.12.3</version>
</dependency>

Answer 2

spring不负责和数据库交互吧