MongoDB插入数据，除去Class key

本文来源于：

来源：CSDN
原文：https://blog.csdn.net/ClementAD/article/details/50849680

去除class字段的本质为设置

DefaultMongoTypeMapper

typeKey为空

xml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: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-1.5.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<!-- 让Spring通过自动扫描来查询和管理Bean -->
<context:component-scan base-package="SpringMogo.mongo" />

<!-- 使Spring关注Annotation -->
<context:annotation-config/>

<!-- Default bean name is 'mongo' -->
<mongo:mongo host="localhost" port="27017" id="mongo" />

<mongo:db-factory dbname="chaoba" mongo-ref="mongo" />

<bean id="defaultMongoTypeMapper" class="org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper">
<constructor-arg name="typeKey"><null/></constructor-arg>
</bean>

<bean id="mongoMappingContext" class="org.springframework.data.mongodb.core.mapping.MongoMappingContext"></bean>

<bean id="mappingMongoConverter" class="org.springframework.data.mongodb.core.convert.MappingMongoConverter">
<property name="typeMapper" ref="defaultMongoTypeMapper"></property>
<constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
<constructor-arg name="mappingContext" ref="mongoMappingContext" />
</bean>

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

<mongo:repositories base-package="SpringMogo.mongo"></mongo:repositories>

</beans>

代码配置
@Configuration
public class MongoConfigLog extends AbstractMongoConfiguration{

    @Value("${mongo.ip}")
    private String MONGO_IP;
    @Value("${mongo.port}")
    private int MONGO_PORT;

    @Override
    protected String getDatabaseName() {
        return "dbName";
    }

    @Override
    public Mongo mongo() throws Exception {
        return new MongoClient(MONGO_IP, MONGO_PORT);
    }

    //都只是为了去除“_class”字段
    @Bean
    @Override
    public MappingMongoConverter mappingMongoConverter() throws Exception {
        MappingMongoConverter mmc = super.mappingMongoConverter();
        mmc.setTypeMapper(new DefaultMongoTypeMapper(null));
        return mmc;
    }
}