强制mapstruct使用自定义方法而不是dto值

当前无法将使用的映射器或服务传递给默认方法。有 mapstruct/mapstruct#1637 打开它。你也不能真的这么做 @Mapper( uses = PasswordEncoder.class ) 因为这会导致所有 String 到 弦 通过 PasswordEncoder . 但你能做的是创造你自己的习惯 PasswordEncoderMapper 使用 @Named 就这样,你就可以控制局面了。

这看起来像这样:

@Qualifier // org.mapstruct.Qualifier
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.CLASS)
public @interface EncodedMapping {
}

public class PasswordEncoderMapper {

    protected final PasswordEncoder passwordEncoder;

    public PasswordEncoderMapper(PasswordEncoder passwordEncoder) {
        this.passwordEncoder = passwordEncoder;
    }

    @EncodedMapping
    public String encode(String value) {
        return passwordEncoder.encode(value);
    }
}

@Mapper(componentModel = "spring", uses = PasswordEncoderMapper.class)
public interface UserMapper {

    @Mapping(target = "password", qualifiedBy = EncodedMapping.class)
    User mapUser(UserDto dto);
}

关于 modifiedBy 财产。你应该把它作为 @ObjectFactory 或者使用表达式。

通过表达式,可以看到:

@Mapper(componentModel = "spring", uses = PasswordEncoderMapper.class, imports = SecurityUtils.class)
public interface UserMapper {

    @Mapping(target = "password", qualifiedBy = EncodedMapping.class)
    @Mapping(target = "modifiedBy", expression = "java(SecurityUtils.getCurrentUserId())")
    User mapUser(UserDto dto);
}