此内容，适合对mongodb和spring有相关基础者参考！
1.启动mongodb后，在mongo中创建相关database  collection  和 域  与下列实体类对应
public class Student implements Serializable{

    private static final long serialVersionUID = 1L;
       
    private String name;
    private int age;
    private String address;
    private String sex;

2. 查看对应的库
C:\Users\ThinkPad>mongo
MongoDB shell version v3.4.1
connecting to: mongodb://127
MongoDB server version: 3.4.
Server has startup warnings:
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ol is not enabled for the da
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te access to data and config
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r update is not installed, w
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> show dbs
itcastdb   0.001GB
库名为 : itcastdb   collection 为: student

3.  建立maven工程：导入相关依赖
<!-- 数据库驱动 -->
                <dependency>
                        <groupId>org.mongodb</groupId>
                        <artifactId>mongodb-driver</artifactId>
                        <version>3.4.3</version>
                </dependency>
                <!-- springdata整合mongodb -->
                <dependency>
                        <groupId>org.springframework.data</groupId>
                        <artifactId>spring-data-mongodb</artifactId>
                        <version>1.10.6.RELEASE</version>
                </dependency>

4.由于本库测试没有账号和密码：  mongodb.properties
mongo.host=127.0.0.1
mongo.port=27017

5. spring配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mongo="http://www.springframework.org/schema/data/mongo"
        xmlns:repository="http://www.springframework.org/schema/data/repository"
        xmlns:context="http://www.springframework.org/schema/context"

        xsi:schemaLocation="http://www.springframework.org/schema/beans
                    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
                    http://www.springframework.org/schema/context
                    http://www.springframework.org/schema/context/spring-context-4.3.xsd
                    http://www.springframework.org/schema/data/mongo
                    http://www.springframework.org/schema/data/mongo/spring-mongo-1.8.xsd
                    http://www.springframework.org/schema/data/repository
                    http://www.springframework.org/schema/data/repository/spring-repository-1.5.xsd">

        <context:property-placeholder location="classpath:properties/mongodb.properties" />
       
        <context:component-scan base-package="com.mongo" />
       
        <mongo:mongo-client id="mongo" host="${mongo.host}" port="${mongo.port}">
        </mongo:mongo-client>

        <mongo:db-factory id="mongoDbFactory" dbname="aaaa"
                mongo-ref="mongo" />

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

</beans>  


6.Dao方法，只测试与mongodb的连接部分
public void save(Student entity) {
                        mongoTemplate.save(entity);                       
        }


7.测试类
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring/mongodb.xml")
public class mongoTest {
       
        @Autowired
    private IMongoDao MongoDaoImpl;
       
        @Test
    public void test1(){
        Student ub=new Student();   
        ub.setName("哈哈哈哈");
        MongoDaoImpl.save(ub);
        System.out.println("插入成功！");
    }

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