ModelMapper在SpringBoot中使用自定义配置

场景

有时候DTO与Model之间不一定是完全匹配上的，这个时候ModelMapper就不知道怎么处理，就需要我们手动处理两层之间的字段映射了。

解决

pom.xml

	<properties>
		<modelmapper.version>3.1.0</modelmapper.version>
	</properties>
...
		<dependencies>
			<dependency>
				<groupId>org.modelmapper.extensions</groupId>
				<artifactId>modelmapper-spring</artifactId>
				<version>${modelmapper.version}</version>
			</dependency>
		</dependencies>

ModelMapperConfig.java

@Configuration
public class ModelMapperConfig {
    @Bean
    public ModelMapper modelMapper() {
        ModelMapper modelMapper = new ModelMapper();
        modelMapper.typeMap(Order.class, OrderDTO.class).addMappings(mapper -> {
            mapper.map(src -> src.getBillingAddress().getStreet(),
                    Destination::setBillingStreet);
            mapper.map(src -> src.getBillingAddress().getCity(),
                    Destination::setBillingCity);
        });
        return modelMapper;
    }
}

参考：

• ModelMapper in Spring Boot No Starter