java – Spring Data Mongo似乎忽略了XML配置中的主机

发布时间：2020-12-15 05:00:49 所属栏目：Java 来源：网络整理

导读：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 mongo：mongo /中配置的MongoDB主机IP地址.元素并尝试连接到127.0.0.1. 根据各种教程,这是我的Spring配置XML： beans xmlns="http://www.springframework.or

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< mongo：mongo />中配置的MongoDB主机IP地址.元素并尝试连接到127.0.0.1.

根据各种教程,这是我的Spring配置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>

该程序：

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);
    }
}

引发的异常：

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)

我能够使用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.

我在StackOverflow中发现了几个命中,但是没有一个与我的案例足够相似,可用于解决问题.

解决方法

您的mongo db-factory无法识别应使用哪个MongoDB数据库IP.

尝试使用引用mongoTemplate值的db-factory< constructor-arg name =“mongoDbFactory”ref =“mongoDbFactory”/>：

<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" />

这也应该有效：

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

（编辑：李大同）

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