我有兩種類型的數(shù)據(jù)要映射：注冊(cè)用戶Dto：public class SignUpUserDto { private String firstName; private String lastName; private String username; private String email; private String password; private String title;}注冊(cè)用戶：@Entitypublic class SignUpUser { private Long id; private String firstName; private String lastName; private String username; private String email; private String password; private Title title;}標(biāo)題：public enum Title { JUNIOR("junior"), MIDDLE("middle"), SENIOR("senior"), MANAGER("manager"); private final String title; Title(final String title) { this.title = title; } public String toString() { return this.title; }}對(duì)于DTO title 成員是一個(gè)String。對(duì)于實(shí)體title 成員是Title。映射器應(yīng)該是什么樣子的？我應(yīng)該傳遞已經(jīng)在服務(wù)中轉(zhuǎn)換的標(biāo)題嗎？@Mapper(componentModel = "spring")public interface SignUpUserMapper { SignUpUserMapper INSTANCE = Mappers.getMapper(SignUpUserMapper.class); @Mapping(target = "title", expression = "title") public SignUpUserDto signUpUserToSignUpUserDto(SignUpUser signUpUser, String title); @Mapping(target = "title", source = "title") public SignUpUser signUpUserDtoToSignUpUser(SignUpUserDto signUpUserDto, Title title);}或者我應(yīng)該在Mapper中進(jìn)行轉(zhuǎn)換？@Mapper(componentModel = "spring", imports = Title.class)public interface SignUpUserMapper { SignUpUserMapper INSTANCE = Mappers.getMapper(SignUpUserMapper.class); @Mapping(target = "title", expression = "java(signUpUser.getTitle().toString())") public SignUpUserDto signUpUserToSignUpUserDto(SignUpUser signUpUser); @Mapping(target = "title", source = "java(new Title(signUpUserDto.getTitle()))") public SignUpUser signUpUserDtoToSignUpUser(SignUpUserDto signUpUserDto);}
2 回答
神不在的星期二
TA貢獻(xiàn)1963條經(jīng)驗(yàn) 獲得超6個(gè)贊
我應(yīng)該傳遞已經(jīng)在服務(wù)中轉(zhuǎn)換的標(biāo)題嗎？
你絕對(duì)不應(yīng)該這樣做。這是轉(zhuǎn)換器的工作，而不是服務(wù)的
嘗試以下方法：
1）枚舉類添加轉(zhuǎn)換方法
enum Title {
...
public static Title fromString(String title) {
if (title != null) {
for (Title t : Title.values()) {
if (t.toString().equals(title)) {
return t;
}
}
}
return null;
}
}
2) Mapper 接口增加2個(gè)轉(zhuǎn)換方法（僅限Java 8+）
@Mapper(componentModel = "spring")
public interface SignUpUserMapper {
SignUpUserDto signUpUserToSignUpUserDto(SignUpUser signUpUser);
SignUpUser signUpUserDtoToSignUpUser(SignUpUserDto signUpUserDto);
default String fromEnum(Title title) {
return title == null ? null : title.toString();
}
default Title toEnum(String title) {
return title == null ? null : Title.fromString(title);
}
}
慕碼人8056858
TA貢獻(xiàn)1803條經(jīng)驗(yàn) 獲得超6個(gè)贊
像這樣使用第二個(gè)選項(xiàng)：
@Mapper(componentModel = "spring", imports = Title.class)
public interface SignUpUserMapper {
SignUpUserMapper INSTANCE = Mappers.getMapper(SignUpUserMapper.class);
@Mapping(target = "title", expression = "java(signUpUser.getTitle().toString())")
public SignUpUserDto signUpUserToSignUpUserDto(SignUpUser signUpUser);
@Mapping(target = "title", source = "java(Title.valueOf(signUpUserDto.getTitle().toUpperCase()))")
public SignUpUser signUpUserDtoToSignUpUser(SignUpUserDto signUpUserDto);
}
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