public abstract class ProductMapper {
protected DateMapper dateMapper;
protected TagMapper tagMapper;
...java.lang.NullPointerException: Cannot invoke "com.example.demo.Mappers.TagMapper.tagDTOtoTag(com.example.demo.Models.DTOs.TagDTO)" because "this.tagMapper" is null
at com.example.demo.Mappers.ProductMapper.tagDTOsToTagSet(ProductMapper.java:39) ~[classes/:na]
at com.example.demo.Mappers.ProductMapperImpl.productDTOtoProduct(ProductMapperImpl.java:37) ~[classes/:na]
at com.example.demo.Services.Impl.ProductServiceImpl.saveProduct(ProductServiceImpl.java:69) ~[classes/:na]
at com.example.demo.Controllers.ProductControler.mainCreateProduct(ProductControler.java:26) ~[classes/:na]
at com.example.demo.Controllers.ProductControler.createProductBodyDTO(ProductControler.java:48) ~[classes/:na]@Mapper(componentModel = MappingConstants.ComponentModel.SPRING,
injectionStrategy = InjectionStrategy.CONSTRUCTOR,
uses = {TagMapper.class, DateMapper.class})
public abstract class ProductMapper {
private DateMapper dateMapper;
private TagMapper tagMapper;
...@Mapper(componentModel = MappingConstants.ComponentModel.SPRING,
injectionStrategy = InjectionStrategy.CONSTRUCTOR,
uses = {TagMapper.class, DateMapper.class})
public abstract class ProductMapper {
private final DateMapper dateMapper;
private final TagMapper tagMapper;
public ProductMapper() {
this.dateMapper = Mappers.getMapper(DateMapper.class);
this.tagMapper = Mappers.getMapper(TagMapper.class);;
}Caused by: java.lang.RuntimeException: java.lang.NoSuchMethodException: com.example.demo.Mappers.TagMapperImpl.<init>()
at org.mapstruct.factory.Mappers.getMapper(Mappers.java:61) ~[mapstruct-1.6.3.jar:na]
at com.example.demo.Mappers.ProductMapper.<init>(ProductMapper.java:28) ~[classes/:na]
at com.example.demo.Mappers.ProductMapperImpl.<init>(ProductMapperImpl.java:23) ~[classes/:na]
at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62) ~[na:na]
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[na:na]
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:483) ~[na:na]
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:209) ~[spring-beans-6.2.0.jar:6.2.0]
... 51 common frames omitted
Caused by: java.lang.NoSuchMethodException: com.example.demo.Mappers.TagMapperImpl.<init>()
at java.base/java.lang.Class.getConstructor0(Class.java:3218) ~[na:na]
at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2493) ~[na:na]
at org.mapstruct.factory.Mappers.doGetMapper(Mappers.java:82) ~[mapstruct-1.6.3.jar:na]
at org.mapstruct.factory.Mappers.getMapper(Mappers.java:69) ~[mapstruct-1.6.3.jar:na]
at org.mapstruct.factory.Mappers.getMapper(Mappers.java:58) ~[mapstruct-1.6.3.jar:na]
... 57 common frames omittedthis.tagMapper = Mappers.getMapper(TagMapper.class);@Autowired
public ProductMapperImpl(DateMapper dateMapper) {
this.dateMapper = dateMapper;
}@Mapper(componentModel = MappingConstants.ComponentModel.SPRING)@Service
@Slf4j
@RequiredArgsConstructor
public class ProductServiceImpl implements ProductService {
private final ProductRepository productRepository;
private final ProductMapper productMapper;
private final TagServiceImpl tagService;
/// методы ///public interface ProductMapper {
@Mapping(target = "tags", source = "tagDTOs", qualifiedByName = "tagDTOsToTagSet")
// @Mapping(target = "dateOfCreated", source = "stringDate")
@Mapping(target = "dateOfCreated", source = "stringDate", dateFormat = "yyyy-MM-dd HH:mm", qualifiedByName = "mapStringToLocalDateTime")
Product productDTOtoProduct(ProductDTO productDTO);
@Mapping(target = "tagDTOs", source = "tags", qualifiedByName = "TagSetToTagDTOs")
// @Mapping(target = "stringDate", source = "dateOfCreated")
@Mapping(target = "stringDate", source = "dateOfCreated", dateFormat = "yyyy-MM-dd HH:mm", qualifiedByName = "mapStringToLocalDateTime")
ProductDTO productToProductDTO(Product product);
@Named("tagDTOsToTagSet")
default Set<Tag> tagDTOsToTagSet(TagDTO[] tagDTOs) {
Set<Tag> tagSet = new HashSet<>();
for (TagDTO tagDTO : tagDTOs) {
tagSet.add(TagMapper.INSTANCE.tagDTOtoTag(tagDTO));
}
return tagSet;
}
@Named("TagSetToTagDTOs")
default TagDTO[] TagSetTotagDTOs(Set<Tag> tagSet) {
TagDTO[] tagDTOs = new TagDTO[tagSet.size()];
Iterator<Tag> tagIterator = tagSet.iterator();
for (int i = 0; i < tagSet.size() ; i ++) {
tagDTOs[i] = TagMapper.INSTANCE.tagToTagDTO(tagIterator.next());
}
return tagDTOs;
}
}@Override
public ProductDTO saveProduct(ProductDTO dto) throws JsonProcessingException {
if (!StringUtils.isEmpty(dto.getTitle())) {
List<Product> products = listProducts(dto.getTitle());
Product product;
if (!products.isEmpty()) {
product = products.getFirst().increaseAmount(products.size());
products.removeFirst();
productRepository.deleteAll(products);
productRepository.save(product);
log.info("Updating amount of Products : {}, Amount = {}", product.getTitle(), product.getAmount());
} else {
product = productMapper.productDTOtoProduct(dto);
productRepository.save(product);
tagService.saveTagSet(product.getTags());
log.info("Saving new Product. Title: {}", product.getTitle());
}
return productMapper.productToProductDTO(product);
}
return null;
}@Mapper(componentModel = MappingConstants.ComponentModel.SPRING,
injectionStrategy = InjectionStrategy.CONSTRUCTOR,
uses = {ProductMapper.class, DateMapper.class})
public interface TagMapper {
TagMapper INSTANCE = Mappers.getMapper(TagMapper.class);
/// Дальше без изменений///
}2025-06-26T00:02:42.904+07:00 ERROR 23612 --- [demo] [nio-8060-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: java.lang.NullPointerException: Cannot invoke "com.example.demo.Mappers.DateMapper.mapStringToLocalDateTime(String)" because "this.dateMapper" is null] with root cause
java.lang.NullPointerException: Cannot invoke "com.example.demo.Mappers.DateMapper.mapStringToLocalDateTime(String)" because "this.dateMapper" is null
at com.example.demo.Mappers.TagMapperImpl.tagDTOtoTag(TagMapperImpl.java:30) ~[classes/:na]
at com.example.demo.Mappers.ProductMapper.tagDTOsToTagSet(ProductMapper.java:39) ~[classes/:na]
at com.example.demo.Mappers.ProductMapperImpl.productDTOtoProduct(ProductMapperImpl.java:32) ~[classes/:na]
at com.example.demo.Services.Impl.ProductServiceImpl.saveProduct(ProductServiceImpl.java:69) ~[classes/:na]
at com.example.demo.Controllers.ProductControler.mainCreateProduct(ProductControler.java:26) ~[classes/:na]
at com.example.demo.Controllers.ProductControler.createProductBodyDTO(ProductControler.java:48) ~[classes/:na]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:590) ~[tomcat-embed-core-10.1.33.jar:6.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885) ~[spring-webmvc-6.2.0.jar:6.2.0]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) ~[tomcat-embed-core-10.1.33.jar:6.0]
ну и, наверное в первый раз я что-то напутал, когда писал мапперы, в общем в любом случае, сейчас мапперы работают, большое спасибо, извините, что сначала не понял.