java操作mongodb的插入和修改

   java操作mongodb的增加和修改过程，主要是通过使用本地的java来操作远程mongodb数据库，来完成对mongodb数据库的新增，以及修改的mongodb基本操作

package taobao;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
import com.mongodb.DBObject;
import com.mongodb.util.JSON;
class java2 {
 
     public static void main(String[] args) {
         try{
             Mongo mg = new Mongo("127.0.0.1",27017);
             DB db = mg.getDB("admin");
            boolean ok = db.authenticate("system","system".toCharArray());
             //mg.auth("system","system");
            //查询所有的Database
            for (String name : mg.getDatabaseNames()) {
                //System.out.println("dbName: " + name);
            }

            db = mg.getDB("test");


            DBCollection goods = db.getCollection("goods");
            BasicDBObject   ob = new BasicDBObject();

            //ob.put("id",1);
        //    goods.update(new BasicDBObject().append("name",1),ob,true);
            //查询所有的数据
            DBCursor cur = goods.find(new BasicDBObject("id",1));

            while (cur.hasNext()) {

                DBObject  x = cur.next();
                System.out.println(x.get("name"));
            }
              /*for(int i=1;i<5;i++) {
                  BasicDBObject x = new BasicDBObject();
                   x.put("id",i);
                x.put("name","name"+i);
                goods.insert(x);
              }*/
              BasicDBObject a = new BasicDBObject();
              BasicDBObject b = new BasicDBObject();
              a.put("id",1);
              b.put("name","ri");
              goods.update(a,new BasicDBObject("$set",b));

         }catch(Exception e){
             e.printStackTrace();
         }
     }
}