问题描述

我正在尝试使用 Spring-Data 和 MongoDB 启动并运行一个简单的Hello World"程序.Spring 似乎忽略了在 <mongo:mongo/> 元素中配置的 MongoDB 主机 IP 地址，而是尝试连接到 127.0.0.1.

I am trying to get a simple "Hello World" program with Spring-Data and MongoDB up and running. Spring seems to be ignoring the MongoDB host IP address configured in the <mongo:mongo/> element and trying to connect to 127.0.0.1 instead.

根据各种教程，这是我的 Spring 配置 XML:

As per various tutorials, here is my Spring Configuration XML:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mongo="http://www.springframework.org/schema/data/mongo"
    xsi:schemaLocation="http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context-3.0.xsd
          http://www.springframework.org/schema/data/mongo
          http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

    <mongo:mongo host="10.125.0.68" port="27017" />
    <mongo:db-factory dbname="test" />

    <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
    </bean>

</beans>

程序:

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericXmlApplicationContext;
import org.springframework.data.mongodb.core.MongoOperations;

public class Test1
{

    public static void main(String[] args) 
    {
        ApplicationContext ctx = new GenericXmlApplicationContext("SpringConfig.xml");
        MongoOperations mo = (MongoOperations)ctx.getBean("mongoTemplate");
        DbDocument a = new DbDocument("John Smith", "jsmith@plymouth.org");
        if (!mo.collectionExists(DbDocument.class))  //<<<----- Exception here
            mo.createCollection(DbDocument.class);
        mo.save(a);
    }
}

抛出的异常:

WARNING: Exception executing isMaster command on /127.0.0.1:27017
java.io.IOException: couldn't connect to [/127.0.0.1:27017] bc:java.net.ConnectException: Connection refused: connect
    at com.mongodb.DBPort._open(DBPort.java:214)
    at com.mongodb.DBPort.go(DBPort.java:107)
    at com.mongodb.DBPort.go(DBPort.java:88)
    at com.mongodb.DBPort.findOne(DBPort.java:143)
    at com.mongodb.DBPort.runCommand(DBPort.java:148)
    at com.mongodb.DBTCPConnector.initDirectConnection(DBTCPConnector.java:548)
    at com.mongodb.DBTCPConnector.checkMaster(DBTCPConnector.java:527)
    at com.mongodb.DBTCPConnector.innerCall(DBTCPConnector.java:277)
    at com.mongodb.DBTCPConnector.call(DBTCPConnector.java:257)
    at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:310)
    at com.mongodb.DBApiLayer$MyCollection.__find(DBApiLayer.java:295)
    at com.mongodb.DB.getCollectionNames(DB.java:412)
    at com.mongodb.DB.collectionExists(DB.java:454)
    at org.springframework.data.mongodb.core.MongoTemplate$5.doInDB(MongoTemplate.java:438)
    at org.springframework.data.mongodb.core.MongoTemplate$5.doInDB(MongoTemplate.java:436)
    at org.springframework.data.mongodb.core.MongoTemplate.execute(MongoTemplate.java:372)
    at org.springframework.data.mongodb.core.MongoTemplate.collectionExists(MongoTemplate.java:436)
    at org.springframework.data.mongodb.core.MongoTemplate.collectionExists(MongoTemplate.java:432)
    at org.nwea.jhg.mongo.Test1.main(Test1.java:18)

我可以使用 GUI 工具连接到指定地址 10.125.0.68 的 Mongo 实例，并确认有一个名为 test 的数据库.

I am able to connect to the Mongo instance at the specified address 10.125.0.68 with a GUI tool and confirm that there is a database named test.

我在 StackOverflow 中找到了几个匹配项，但没有一个与我的情况足够相似，无法用于解决问题.

I found a couple of hits in StackOverflow but neither one is sufficiently similar to my case to be of use in solving the problem.

推荐答案

您的 mongo db-factory 无法识别它应该使用哪个 MongoDB 数据库 IP.

Your mongo db-factory doesn't identify which MongoDB database IP it should use.

尝试使用引用 mongoTemplate 值的 db-factory :

<mongo:mongo id="mongo" host="10.125.0.68" port="27017" />

<mongo:db-factory id="mongoDbFactory"
                  host="10.125.0.68"
                  port="27017"
                  username="admin"
                  password="xxx"
                  dbname="test"
                  mongo-ref="mongo" />

<mongo:mongo id="mongo" host="10.125.0.68" port="27017" />
<mongo:db-factory dbname="test" mongo-ref="mongo" />