API 文档

Java 连接示例

最近更新时间:2020-04-17 17:48:44

相关说明

云数据库 MongoDB 默认提供 rwuser 和 mongouser 两个用户名,分别支持 MONGODB-CR 和 SCRAM-SHA-1 两种认证方式,对于这两种认证方式,连接 URI 需要做不同的处理,具体参见 连接实例

Java MongoDB 驱动文档

Java Jar 包下载,请选择3.2以上版本

快速开始

原生 Java 示例代码

package mongodbdemo;

import org.bson.*;
import com.mongodb.*;
import com.mongodb.client.*;

public class MongodbDemo {

    public static void main(String[] args) {
        String mongoUri = "mongodb://mongouser:thepasswordA1@10.66.187.127:27017/admin";
        MongoClientURI connStr = new MongoClientURI(mongoUri);
        MongoClient mongoClient = new MongoClient(connStr);
        try {
            // 使用名为 someonedb 的数据库
            MongoDatabase database = mongoClient.getDatabase("someonedb");
            // 取得集合/表 someonetable 句柄
            MongoCollection<Document> collection = database.getCollection("someonetable");

            // 准备写入数据
            Document doc = new Document();
            doc.append("key", "value");
            doc.append("username", "jack");
            doc.append("age", 31);

            // 写入数据
            collection.insertOne(doc);
            System.out.println("insert document: " + doc);

            // 读取数据
            BsonDocument filter = new BsonDocument();
            filter.append("username", new BsonString("jack"));
            MongoCursor<Document> cursor = collection.find(filter).iterator();
            while (cursor.hasNext()) {
                System.out.println("find document: " + cursor.next());
            }
        } finally {
            //关闭连接
            mongoClient.close();
        }
    }
}

输出:

INFO: Opened connection [connectionId{localValue:2, serverValue:67621}] to 10.66.122.28:27017
insert document: Document{{key=value, username=jack, age=31, _id=56a6ebb565b33b771f9826dd}}
find document: Document{{_id=56a3189565b33b2e7ca150ba, key=value, username=jack, age=31}}
Jan 26, 2016 11:44:53 AM com.mongodb.diagnostics.logging.JULLogger log
INFO: Closed connection [connectionId{localValue:2, serverValue:67621}] to 10.66.122.28:27017 because the pool has been closed.

Spring Data MongoDB 配置示例

本示例主要为了体现出 认证库 admin 的配置方法,具体还请参考您使用的 Spring 和 Spring Data MongoDB 的版本而定。

<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    <constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
</bean>
<bean id="mongoDbFactory" class="org.springframework.data.mongodb.core.SimpleMongoDbFactory">
    <constructor-arg name="mongo" ref="mongo" />
    <constructor-arg name="databaseName" value="您的目标库" />
    <constructor-arg name="credentials" ref="userCredentials" />
    <constructor-arg name="authenticationDatabaseName" value="admin" />
</bean>
<bean id="userCredentials" class="org.springframework.data.authentication.UserCredentials">
    <constructor-arg name="username" value="用户名" />
    <constructor-arg name="password" value="密码" />
</bean>
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