MongoDB去除_class属性

连接MongoDB数据库属性文件

mongo.host=Mongodb连接地址

mongo.port=27017

mongo.poolSize=50

mongo.user=

mongo.password=

mongo.database=Mongodb数据库名字

spring配置文件如下：

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

xmlns:context="http://www.springframework.org/schema/context"xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"

xmlns:mongo="http://www.springframework.org/schema/data/mongo"

xsi:schemaLocation="

http://www.springframework.org/schema/data/mongohttp://www.springframework.org/schema/data/mongo/spring-mongo-1.1.xsd

http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.1.xsd

http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.1.xsd

http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.1.xsd">

<beanclass="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<propertyname="locations">

<list>

<value>classpath:META-INF/conf/config.properties</value>

<value>classpath:META-INF/conf/jdbc.properties</value>

<value>classpath:META-INF/conf/dubbo.properties</value>

</list>

</property>

</bean>

<!--MongoDB连接配置-->

<mongo:mongohost="${mongo.host}"port="${mongo.port}"/>

<mongo:db-factorydbname="${mongo.database}"mongo-ref="mongo"/>

<beanid="mappingContext"class="org.springframework.data.mongodb.core.mapping.MongoMappingContext"/>

<beanid="mappingMongoConverter"class="org.springframework.data.mongodb.core.convert.MappingMongoConverter">

<constructor-argname="mongoDbFactory"ref="mongoDbFactory"/>

<constructor-argname="mappingContext"ref="mappingContext"/>

<propertyname="typeMapper"ref="defaultMongoTypeMapper"/>

</bean>

<beanid="defaultMongoTypeMapper"class="org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper">

<!--这里用来删除MongoDB中的_class属性,设置为空-->

<constructor-argname="typeKey">

<null/>

</constructor-arg>

</bean>

<beanid="mongoTemplate"class="org.springframework.data.mongodb.core.MongoTemplate">

<constructor-argname="mongoDbFactory"ref="mongoDbFactory"/>

<constructor-argname="mongoConverter"ref="mappingMongoConverter"/>

</bean>

</beans>

以上是放在spring配置文件中的,须引入spring-data-mongodb、

mongo-java-driver的JAR包