如何在服务课上获得豆子？

Question

我正在尝试定义ModelMapper的配置，所有其他类都可以共享。 我创建了一个配置类：

@Configuration
@AllArgsConstructor
public class ModelMapperConfig {

    protected final ModelMapper mapper;

    @Bean
    public ModelMapper getMapper() {
        mapper.addMappings(new PropertyMap<MerchantDTO, Merchant>() {
            @Override
            protected void configure() {
                skip(destination.getId());
            }
        });
        return mapper;
    }
}

但是当我在另一个服务中使用constructor di时：

private final ModelMapper mapper;

我会发现一个错误

The dependencies of some of the beans in the application context form a cycle:

Answer 1

TIS是我们使用的方式：

配置文件：

import org.modelmapper.ModelMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class AppConfig {

@Bean
public ModelMapper modelMapper() {
    ModelMapper modelMapper = new ModelMapper();
    modelMapper.addMappings(ModelMapperConfig.userToUserDTO());
    return modelMapper;
  }
}

用于深度映射的配置：

import org.modelmapper.PropertyMap;

class ModelMapperConfig {

static PropertyMap<User, UserDTO> userToUserDTO() {
    return new PropertyMap<>() {
        protected void configure() {
            map().setOfficeName(source.getOffice().getOfficeName());
        }
      };
    }
  }

服务：

import org.modelmapper.ModelMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class DemoServiceImpl implements DemoService {

    private ModelMapper modelMapper;

    @Autowired
    public DemoServiceImpl(ModelMapper modelMapper) {
      this.modelMapper = modelMapper;
    }
 }

您可以使用它。