MongoDB快速入门笔记(八)之MongoDB的java驱动操作代码讲解

import java.util.ArrayList;import java.util.List;import java.util.regex.Pattern;import org.bson.Document;import com.mongodb.MongoClient;import com.mongodb.MongoCredential;import com.mongodb.ServerAddress;import com.mongodb.client.FindIterable;import com.mongodb.client.MongoCollection;import com.mongodb.client.MongoCursor;import com.mongodb.client.MongoDatabase;public class MongoZyh {public static void main(String[] args) {try {// 连接到MongoDB服务,ServerAddress()两个参数分别为 服务器地址 和 端口ServerAddress serverAddress = new ServerAddress("localhost", 27017);List<ServerAddress> addrs = new ArrayList<ServerAddress>();addrs.add(serverAddress);// 三个参数分别为 用户名 数据库名称 密码MongoCredential credential = MongoCredential.createScramSha1Credential("zyh", "admin","zyh".toCharArray());List<MongoCredential> credentials = new ArrayList<MongoCredential>();credentials.add(credential);// 通过连接认证获取MongoDB连接MongoClient mongoClient = new MongoClient(addrs, credentials);// 连接到数据库MongoDatabase mongoDatabase = mongoClient.getDatabase("zyhdb");// 新建集合，执行后会在数据库里新建一个空的集合// mongoDatabase.createCollection("student");// System.out.println("新建集合成功");// 获取集合，并往集合中插入数据MongoCollection<Document> mongoCollection = mongoDatabase.getCollection("student");// 插入一条数据// Document document = new Document();// document.append("name", "zhangsan");// document.append("age", 28);// mongoCollection.insertOne(document);// System.out.println("插入一条数据成功");// 插入多条数据// List<Document> documentList = new ArrayList<Document>();// Document document1 = new Document();// document1.append("name", "lisi");// document1.append("age", 28);// document1.append("sex", "男");// Document document2 = new Document();// document2.append("name", "wangwu");// document2.append("age", 31);// document2.append("sex", "男");// documentList.add(document1);// documentList.add(document2);// mongoCollection.insertMany(documentList);// System.out.println("插入多条数据成功");// 查询数据// 查询集合中所有的数据// FindIterable<Document> findIterable = mongoCollection.find();// MongoCursor<Document> mongoCursor = findIterable.iterator();// while (mongoCursor.hasNext()) {// System.out.println(mongoCursor.next());// }// 根据条件查询// Document query = new Document();// query.put("age", new Document("$lt", 30));// query.put("sex", "男");// query.put("name", query);// 正则表达式查询// Pattern pattern = Pattern.compile("^zhang");// query.put("name", pattern);// 排序// Document sort = new Document();// sort.put("name", -1); // 1是正序，-1是倒序// FindIterable<Document> findIterable = mongoCollection.find(query)// .sort(sort);// MongoCursor<Document> mongoCursor = findIterable.iterator();// while (mongoCursor.hasNext()) {// Document doc = mongoCursor.next();// System.out.print("name:" + doc.get("name") + "...");// System.out.print("age:" + doc.get("age") + "...");// System.out.println("sex:" + doc.get("sex") + "...");// }// mongoCollection.findOneAndUpdate(查询条件, 修改内容); // 查询出第一条数据并修改// mongoCollection.findOneAndDelete(查询条件); // 查询出第一条数据并删除// mongoCollection.findOneAndReplace(查询条件, 替换内容); // 查询出第一条数据并替换// 修改数据// Document query = new Document();// query.put("age", 28);// Document update = new Document();// Document d = new Document();// d.put("birthday", new Date());// d.put("name", "zhangsan");// update.put("$set", d);// mongoCollection.updateOne(query, update); // 修改查询到的第一条数据// mongoCollection.updateMany(查询条件, 修改内容);// 修改查询到的所有数据// 删除数据// Document query = new Document();// query.put("age", 28);// mongoCollection.deleteOne(query); // 删除查询到的第一条数据// mongoCollection.deleteMany(查询条件); // 删除查询到的所有数据// mongoCollection.drop(); // 删除集合} catch (Exception e) {e.printStackTrace();}}}