jsr330的componentModel 配合CONSTRUCTOR的InjectionStrategy可以与Dagger配合使用。
定义Mapper，并在map的同时完成解密：
package net.axqd.mapper;
import org.mapstruct.InjectionStrategy;
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;
@Mapper(componentModel = "jsr330",
uses = DecryptorQualifier.class
injectionStrategy = InjectionStrategy.CONSTRUCTOR)
public interface AToBMapper {
@Mapping(
source = "src.encrypted",
target = "decrypted",
qualifiedByName = { "DecryptorQualifier", "decrypt" })
B mapAToB(final src)
}其中，DecryptorQualifier的定义如下：
package net.axqd.mapper;
import lombok.NonNull;
import org.mapstruct.Named;
import javax.inject.Inject;
@Named("DecryptorQualifier")
public class DecryptorQualifier {
private final Service service;
@Inject
public DecryptorQualifier(@NonNull final Service service) {
this.service = service;
}
@Named("decrypt")
public String decrypt(final String encrypted) {
return service.decrypt(encrypted);
}
}定义Mapper的Provider：
package net.axqd.dagger;
import net.axqd.mapper.AToBMapper;
import net.axqd.mapper.AToBMapperImpl;
import dagger.Module;
import dagger.Provides;
import javax.inject.Singleton;
@Module
public class MapperModule {
@Provides
@Singleton
AToBMapper aToBMapper(final DecryptorQualifier qualifier) {
return new AToBMapperImpl(qualifier);
}
}定义Component:
import dagger.Component;
import javax.inject.Singleton;
@Component(modules = {
MapperModule.class
})
@Singleton
public interface FooBarComponent {
...
}单元测试:
package net.axqd.mapper;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
@ExtendWith(MockitoExtension.class)
public class AToBMapperTest {
private static final String ENCRYPTED = "encrypted";
private static final String DECRYPTED = "decrypted";
@Mock
private DecryptorQualifier qualifier;
@InjectMocks
private AToBMapperImpl mapper;
@Test
public void aToBMapper_when_xxx() {
when(qualifier.decrypt(ENCRYPTED)).thenReturn(DECRYPTED);
final A a = A.builder().xxx.build();
final B b = mapper.mapAToB(a);
assertEquals(...);
}
}