java连接mongodb报错

<span style="background-color: rgb(255, 255, 255); font-family: Arial, Helvetica, sans-serif;">写一个简短的测试程序却报错，郁闷</span>

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);"></span><pre name="code" class="html">public static void main(String[] args) {    

  try {    

   Mongo mongo = new Mongo("10.2.167.27",27017);    

   DB db = mongo.getDB("company");    

   DBCollection collection = db.getCollection("employees");    

   BasicDBObject employee = new BasicDBObject();
   employee.put("name", "Hannah");
   employee.put("no", 2);    

   collection.insert(employee);    

   BasicDBObject searchEmployee = new BasicDBObject();
   searchEmployee.put("no", 2);    

   DBCursor cursor = collection.find(searchEmployee);    

   while (cursor.hasNext()) {
    System.out.println(cursor.next());
   }    

   System.out.println("The Search Query has Executed!");    

  } catch (UnknownHostException e) {
   e.printStackTrace();
  } catch (MongoException e) {
   e.printStackTrace();
  }    

 }    

报错信息如下：

java.io.IOException: couldn‘t connect to [/10.2.167.27:27017] bc:java.net.ConnectException: Connection refused: connect

at com.mongodb.DBPort._open(DBPort.java:224)

at com.mongodb.DBPort.go(DBPort.java:101)

at com.mongodb.DBPort.go(DBPort.java:82)

at com.mongodb.DBPort.findOne(DBPort.java:142)

at com.mongodb.DBPort.runCommand(DBPort.java:151)

at com.mongodb.DBTCPConnector.fetchMaxBsonObjectSize(DBTCPConnector.java:429)

at com.mongodb.Mongo.getMaxBsonObjectSize(Mongo.java:544)

at com.mongodb.DBApiLayer$MyCollection.insert(DBApiLayer.java:244)

at com.mongodb.DBApiLayer$MyCollection.insert(DBApiLayer.java:217)

at com.mongodb.DBCollection.insert(DBCollection.java:87)

at mongodb.MongoDBClient.main(MongoDBClient.java:28)

看看服务器的端口：tcp        0      0 127.0.0.1:27017             0.0.0.0:*                   LISTEN      31933/mongod

说明端口监听已ok。那就是配置问题

打开vim /etc/mongod.conf

# Listen to local interface only. Comment out to listen on all interfaces.

bind_ip=127.0.0.1

看到一条这样的记录。端口对谁开放。注释了。ok就可以远程访问了。

得到正确结果如下：

{ "_id" : { "$oid" : "54a8fcad2d1dc6f5db50564b"} , "name" : "Hannah" , "no" : 2}

The Search Query has Executed!