隨筆檔案(496)

1.準備

???? 下載Mongo Java Driver，下載地址：https://github.com/downloads/mongodb/mongo-java-driver/mongo-2.5.3.jar

???? 如果是使用maven編譯，可在pom.xml文件中加入如下依賴

???? <dependency>
????????? <groupId>org.mongodb</groupId>
????????? <artifactId>mongo-java-driver</artifactId>
????????? <version>2.5.3</version>
???? </dependency>

2.上程序

/**
?* MongoDB學習之HelloWorld
?*
?* @author <a href="mailto:gerald.chen@qq.com">GeraldChen</a>
?* @version $Id: HelloWorldTest.java,v 1.1 2011/05/26 12:42:45 gerald.chen Exp $
?*/
public class HelloWorldTest {

????? /** 數據庫連接IP */
???? public static final String DB_HOST = "192.168.35.101";

???? /** 數據庫連接端口 */
???? public static final int DB_PORT = 27017;

???? public static void main(String[] args) throws Exception {
???????? // connect to mongoDB, ip and port number
???????? Mongo mongo = new Mongo(DB_HOST, DB_PORT);

???????? // get database from MongoDB,
???????? // if database doesn't exists, mongoDB will create it automatically
???????? DB db = mongo.getDB("test_db");

???????? // Get collection from MongoDB, database named "yourDB"
???????? // if collection doesn't exists, mongoDB will create it automatically
???????? DBCollection collection = db.getCollection("test_collection");

???????? // create a document to store key and value
???????? BasicDBObject document = new BasicDBObject();
???????? document.put("id", 1001);
???????? document.put("message", "hello world mongoDB in Java");

???????? // save it into collection named "yourCollection"
???????? collection.insert(document);

???????? // search query
???????? BasicDBObject searchQuery = new BasicDBObject();
???????? searchQuery.put("id", 1001);

???????? // query it
???????? DBCursor cursor = collection.find(searchQuery);

???????? // loop over the cursor and display the retrieved result
???????? while (cursor.hasNext()) {
????????????????? System.out.println(cursor.next());
???????? }
???????? System.out.println("Done");
???}

}

2.程序輸出

關鍵詞：HelloWorld?? MongoDB?? NoSQL?? JAVA??? 程序?? 軟件?? 數據庫?? 程序員
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