mongodb测试类

public class MongoManager {
private static final String MONGO_DBNAME="local";
private static final String COLLECTION_NAME="person";
private Mongo mongo=null;
private DB db=null;
private DBCollection coll=null;
public MongoManager(){
try {
mongo=new Mongo();
db=mongo.getDB(MONGO_DBNAME);
coll=db.getCollection(COLLECTION_NAME);
System.out.println("db:"+db+",coll:"+coll);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (MongoException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void destory(){
if(mongo !=null){
mongo.close();
mongo=null;
db=null;
}
}
//查询单个与查询多个.
public void queryAll(){
System.out.println("queryAll start...");
DBCursor cursor = coll.find();
while(cursor.hasNext()){
System.out.println("queryAll:"+cursor.next());
}
}
//单条插入与多条插入。
public void add(){
queryAll();
System.out.println("add befor count:"+coll.count());
for(int i=0;i<5;i++){
DBObject object=new BasicDBObject();
object.put("name", "lkj"+i);
object.put("age", i);
object.put("sex", "男");
coll.save(object);
}
System.out.println("add after count:"+coll.count());
}
//单条更新与多条更新。
public void update(){
//int i=coll.update(new BasicDBObject("_id",new ObjectId("5680d3844b3ad1cd62dc8a82")), new BasicDBObject("age","22")).getN();
//System.out.println("update i:"+i);
// int j=coll.update(new BasicDBObject("_id", new ObjectId("5680d3844b3ad1cd62dc8a82")), new BasicDBObject("age", "23"), true, false).getN();
// System.out.println("update j:"+j);
BasicDBObject db=new BasicDBObject("name", "lkj");
db.append("age", 21);
db.append("sex", "男");
BasicDBObject db2=new BasicDBObject("$set", db);
BasicDBObject db3=new BasicDBObject();
Pattern p=Pattern.compile("^lkp2.*$", Pattern.CASE_INSENSITIVE);
db3.append("name", p);
//int k=coll.update(new BasicDBObject("_id", new ObjectId("5680d3844b3ad1cd62dc8a83")), db2).getN();
//前面是满足条件的，后面是要更新的内容.
int k=coll.updateMulti(db3, db2).getN();
System.out.println("update k:"+k);
}
//单条删除与多条删除
public void delete(){
//int i=coll.remove(new BasicDBObject("_id",new ObjectId("5680d3844b3ad1cd62dc8a82"))).getN();
//System.out.println("delete i:"+i);
BasicDBObject db3=new BasicDBObject();
Pattern p=Pattern.compile("^lkj.*$", Pattern.CASE_INSENSITIVE);
db3.append("name", p);

BasicDBList dblist=new BasicDBList();
dblist.add("lkj0");
dblist.add("lkj1");
BasicDBObject db=new BasicDBObject("name", new BasicDBObject("$in", dblist));
int k=coll.remove(db).getN();
System.out.println("delete k:"+k);
}
//查询单个.多个条件.模糊查询.
public void querySingle(){
// BasicDBObject db=new BasicDBObject("_id", new ObjectId("5680d2cb4b3ae0e80dc4cd16"));
// BasicDBObject db2=new BasicDBObject("age", new BasicDBObject("$lte", 26));
// db2.append("name", "lkj");
// db2.append("sex", "男");
// BasicDBList dblist=new BasicDBList();
// dblist.add(2);
// dblist.add(3);
// dblist.add(4);
BasicDBObject db=new BasicDBObject();
// db.put("age", new BasicDBObject("$in", dblist));
Pattern p=Pattern.compile("^.*1$", Pattern.CASE_INSENSITIVE);
db.append("name", p);
DBCursor cursor = coll.find(db);
while(cursor.hasNext()){
System.out.println("querySingle:"+cursor.next());
}
}
public static void main(String[] args) {
MongoManager mm=new MongoManager();
//mm.add();
//mm.update();
// mm.delete();
mm.queryAll();
//mm.querySingle();
}
}