Question

Java连接mongodb报错了，怎么解决

Answer 1

package com.fz.test;

import java.net.UnknownHostException;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.Mongo;
import com.mongodb.MongoException;
import com.mongodb.util.JSON;

public class SimpleTest {
public static void main(String[] args) throws UnknownHostException,
MongoException {
Mongo mg = new Mongo("192.168.2.77", 27017);
// 查询所有的Database
for (String name : mg.getDatabaseNames()) {
System.out.println("dbName: " + name);
}
DB db = mg.getDB("test");
// 查询所有的聚集集合
for (String name : db.getCollectionNames()) {
System.out.println("collectionName: " + name);
}
DBCollection users = db.getCollection("users");
// 查询所有的数据
DBCursor cur = users.find();
while (cur.hasNext()) {
System.out.println(cur.next());
}
System.out.println(cur.count());
System.out.println(cur.getCursorId());
System.out.println(JSON.serialize(cur));
}
}