怎么做用网站赚钱吗,工商企业注册登记网官网,网站搭建规划,阳江房价文章目录 1.引入Java驱动依赖2.快速开始2.1 先在monsh连接建立collection2.2 java中快速开始2.3 Insert a Document2.4 Update a Document2.5 Find a Document2.6 Delete a Document 1.引入Java驱动依赖 注意#xff1a;启动服务的时候需要加ip绑定 需要引入依赖 dependen… 文章目录 1.引入Java驱动依赖2.快速开始2.1 先在monsh连接建立collection2.2 java中快速开始2.3 Insert a Document2.4 Update a Document2.5 Find a Document2.6 Delete a Document 1.引入Java驱动依赖 注意启动服务的时候需要加ip绑定 需要引入依赖 dependencygroupIdorg.mongodb/groupIdartifactIdmongodb-driver-sync/artifactIdversion5.1.0/version/dependencydependencygroupIdjunit/groupIdartifactIdjunit/artifactIdversion4.12/versionscopetest/scope/dependency!-- https://mvnrepository.com/artifact/org.mongodb/bson --dependencygroupIdorg.mongodb/groupIdartifactIdbson/artifactIdversion5.1.0/version/dependency!-- https://mvnrepository.com/artifact/org.mongodb/mongodb-driver-core --dependencygroupIdorg.mongodb/groupIdartifactIdmongodb-driver-core/artifactIdversion5.1.0/version/dependency2.快速开始
2.1 先在monsh连接建立collection
db.players.insertOne({name:palyer1,height:181,weigh:90})
{acknowledged: true,insertedId: ObjectId(665c5e0a522ef6dba6a26a13)
}
test db.players.insertOne({name:palyer2,height:190,weigh:100})
{acknowledged: true,insertedId: ObjectId(665c5e18522ef6dba6a26a14)
}
test db.players.find()
[{_id: ObjectId(665c5e0a522ef6dba6a26a13),name: player1,height: 181,weigh: 90},{_id: ObjectId(665c5e18522ef6dba6a26a14),name: player2,height: 190,weigh: 100}
]2.2 java中快速开始
public class QuickStart {public static void main(String[] args) {// 连接的urlString uri mongodb://node02:27017;try (MongoClient mongoClient MongoClients.create(uri)) {MongoDatabase database mongoClient.getDatabase(test);MongoCollectionDocument collection database.getCollection(players);Document doc collection.find(eq(name, palyer2)).first();if (doc ! null) {//{_id: {$oid: 665c5e18522ef6dba6a26a14}, name: palyer2, height: 190, weigh: 100}System.out.println(doc.toJson());} else {System.out.println(No matching documents found.);}}}}2.3 Insert a Document Testpublic void InsertDocument(){MongoDatabase database mongoClient.getDatabase(test);MongoCollectionDocument collection database.getCollection(map);try {// 插入地图文档InsertOneResult result collection.insertOne(new Document().append(_id, new ObjectId()).append(name, beijing).append(longitude, 40°N).append(latitude, 116°E));//打印文档的id//Success! Inserted document id: BsonObjectId{value665c6424a080bb466d32e645}System.out.println(Success! Inserted document id: result.getInsertedId());// Prints a message if any exceptions occur during the operation} catch (MongoException me) {System.err.println(Unable to insert due to an error: me);}2.4 Update a Document Testpublic void UpdateDocument(){MongoDatabase database mongoClient.getDatabase(test);MongoCollectionDocument collection database.getCollection(map);//构造更新条件Document query new Document().append(name, beijing);// 指定更新的字段Bson updates Updates.combine(Updates.set(longitude, 40.0N),Updates.set(latitude, 116.0E));// Instructs the driver to insert a new document if none match the queryUpdateOptions options new UpdateOptions().upsert(true);try {// 更新文档UpdateResult result collection.updateOne(query, updates, options);// Prints the number of updated documents and the upserted document ID, if an upsert was performedSystem.out.println(Modified document count: result.getModifiedCount());System.out.println(Upserted id: result.getUpsertedId());} catch (MongoException me) {System.err.println(Unable to update due to an error: me);}}2.5 Find a Document Testpublic void testFindDocuments(){MongoDatabase database mongoClient.getDatabase(test);MongoCollectionDocument collection database.getCollection(map);// 创建检索条件/*Bson projectionFields Projections.fields(Projections.include(name, shanghai),Projections.excludeId());*/// 匹配过滤检索文档MongoCursorDocument cursor collection.find(eq(name, shanghai))//.projection(projectionFields).sort(Sorts.descending(longitude)).iterator();// 打印检索到的文档try {while(cursor.hasNext()) {System.out.println(cursor.next().toJson());}} finally {cursor.close();}}2.6 Delete a Document Testpublic void DeleteDocument(){MongoDatabase database mongoClient.getDatabase(test);MongoCollectionDocument collection database.getCollection(map);Bson query eq(name, shanghai);try {// 删除名字为shanghai的地图DeleteResult result collection.deleteOne(query);System.out.println(Deleted document count: result.getDeletedCount());// 打印异常消息} catch (MongoException me) {System.err.println(Unable to delete due to an error: me);}}
