|
DBCollection collection=db.getCollection("test");
BasicDBObject doc = new BasicDBObject("name", "xiaohua2");
collection.insert(doc);
System.out.println(collection.count());
mongoClient.close();
/*
//得到一个集合，这个集合就是用来做crud的接口
DBCollection coll = db.getCollection("mydb");
//插入一个document，和sql的表差不多
//The _id element has been added automatically by MongoDB to your document.
//Remember, MongoDB reserves element names that start with “_”/”$” for internal use
BasicDBObject doc = new BasicDBObject("name", "MongoDB")
.append("type", "database")
.append("count", 1)
.append("info", new BasicDBObject("x", 203).append("y", 102));
coll.insert(doc);
//得到第一条document
DBObject myDoc = coll.findOne();
System.out.println(myDoc);
//多条数据插入
for (int i=0; i < 100; i++) {
coll.insert(new BasicDBObject("i", i));
}
//统计document的行数
System.out.println(coll.getCount());
//使用游标
DBCursor cursor = coll.find();
try {
while(cursor.hasNext()) {
System.out.println(cursor.next());
}
} finally {
cursor.close();
}
mongoClient.close();
//查询
// BasicDBObject query = new BasicDBObject("i", 71);
// cursor = coll.find(query);
//
// try {
// while(cursor.hasNext()) {
// System.out.println(cursor.next());
// }
// } finally {
// cursor.close();
// }
*/
}
}
注意记得将mongoclient close掉
备注，如果转载：请标明出处blog.csdn.net/xh199110 飞天博客
如果有写的不对的地方，欢迎指正。作者也是看官网，查资料，加上自己的理解，写了这篇文章，以便大家一起来学习，谢谢
|