Common APIs for Java db2.6 operations

For mongoDB, there are not many ways to learn from relational databases.

At the beginning, we learned how to insert, find, update, and remove, and then paging, sorting, and indexing, followed by master-slave replication, replica set, and sharding.

Finally, it provides various drivers (such as Java, PHP, node. js, and so on) to practice the so-called advanced usage.

In addition, compared with Oracle, MySQL has PLSQL Developer, and MySQL has HeidiSQL.

MongoDB is no exception. One of its graphical tools is called mongoVUE. I use the 1.5.3 cracked version (not the one that needs to change the registry every 15 days)

The following example shows how to use a common mongoDB API in Java.

Package com. jadyer. test; import java.net. unknownHostException; import java. util. arrayList; import java. util. list; import org. bson. types. objectId; import org. junit. afterClass; import org. junit. beforeClass; import org. junit. test; import com. mongodb. basicDBObject; import com. mongodb. DB; import com. mongodb. DBCollection; import com. mongodb. DBCursor; import com. mongodb. DBObject; import com. mongodb. using client; import com. mongodb. writeResult; import com. mongodb. util. JSON;/*** mongoDB Java driver test * @ see plugin * @ see configuration * @ see 1) download https://fastdl.mongodb.org/win32/mongodb-win32-x86_64-2008plus-2.6.1.zip * @ see 2) unzip to local hard drive D: \ Develop \ mongoDB \, and configure the environment variable path = D: \ Develop \ mongoDB \ bin * @ see and then execute this command under CMD to verify whether the installation is successful> mongod -- version * @ see 3) Create the D: \ Develop \ mongoDBData \ folder, used to store mongoDB data files * @ see 4) custom bat files, which are used to start the mongoDB database and the Client Connecting to the database * @ see mongo_client.bat to start the client. The content is --> mongo 127.0.0.1: 27017/admin * @ see the content of mongo_db.bat starting the database is ------> mongod -- dbpath D: \ Develop \ mongoDBData -- rest * @ see note: the [-- rest] parameter is added to access the mongoDB Web Console http: // 127.0.0.1: 28017/* @ see plugin * @ see Java driver * @ see the mongoDB Java driver package is used here, http://docs.mongodb.org/ecosystem/drivers/java/ * @ see author * @ create May 15,201 4 10:17:30 * @ author Xuan Yu