简介
项目中经常需要将Model和DTO互转，产生很多getXXX/setXXX的模板化代码。使用ModelMapper可以简化转换步骤。
官网
http://modelmapper.org/
添加依赖
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| <dependency>
<groupId>org.modelmapper</groupId>
<artifactId>modelmapper</artifactId>
<version>2.3.0</version>
</dependency>
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对象示例
源对象：
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class Order {
Customer customer;
Address billingAddress;
}
class Customer {
Name name;
}
class Name {
String firstName;
String lastName;
}
class Address {
String street;
String city;
}
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目标对象：
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class OrderDTO {
String customerFirstName;
String customerLastName;
String billingStreet;
String billingCity;
}
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自动转换
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| ModelMapper modelMapper = new ModelMapper();
OrderDTO orderDTO = modelMapper.map(order, OrderDTO.class);
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自定义转换
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| modelMapper.typeMap(Order.class, OrderDTO.class).addMappings(mapper -> {
mapper.map(src -> src.getBillingAddress().getStreet(),
Destination::setBillingStreet);
mapper.map(src -> src.getBillingAddress().getCity(),
Destination::setBillingCity);
});
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转换配置
ModelMapper有Standard、Loose、Strict 3种模式：
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| modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.LOOSE);
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参考文档：
http://modelmapper.org/user-manual/configuration/#matching-strategies
转换校验
assert手工校验：
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| assertEquals(order.getCustomer().getName().getFirstName(), orderDTO.getCustomerFirstName());
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ModelMapper自动校验：
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| modelMapper.createTypeMap(Order.class, OrderDTO.class);
modelMapper.addMappings(new OrderMap());
modelMapper.validate();
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