Say, in request, I'm getting
?name=Jack&age=26&price=100&quantity=2
I have two model objects as below
public class User {
public String name;
public String age;
//getters and setters
}
public class Order {
public int price;
public int quantity;
//getters and setters
}
Now I want to have a controller method as below
#RequestMapping(value = "/submit", method = RequestMethod.GET)
public String home(#ModelAttribute("user") User user, #ModelAttribute("order") Order order, Model model) {
//stuff
}
As you can see I want to populate the model objects using two separate #ModelAttribute annotation. Is this possible in spring mvc?
Sattyaki, I suggest you to provide a few getters/setters to User and Order, and then compose the desired request with another class:
public class Checkout {
private User user;
private Order order;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Order getOrder() {
return order;
}
public void setOrder(Order order) {
this.order = order;
}
}
And to request for this operation, just issue a GET to the wanted URI(/submit) with your parameters. Observe that they are now using dot notation:
/submit?user.name=Jack&user.age=26&order.price=100&order.quantity=2
Related
I have a spring-boot application and I use DTO like that:
Service
#Service
public class UnitOfMeasureServiceImpl implements IUnitOfMeasureService {
private final IUnitsOfMeasureRepository unitOfMeasureRepository;
#Autowired
public UnitOfMeasureServiceImpl(IUnitsOfMeasureRepository unitOfMeasureRepository) {
this.unitOfMeasureRepository = unitOfMeasureRepository;
}
#Override
public UnitOfMeasureDTO getUnitOfMeasureById(UUID id) {
Optional<UnitOfMeasure> optionalUnitOfMeasure = unitOfMeasureRepository.findById(id);
if (!optionalUnitOfMeasure.isPresent()){
// throw new ComponentNotFoundException(id);
return null;
}
return UnitOfMeasureDTO.factory(optionalUnitOfMeasure.get());
}
dto:
#Data
#JsonInclude(JsonInclude.Include.NON_NULL)
public class UnitOfMeasureDTO {
private String id;
private String name;
private String description;
private String sourceInfoCompanyName;
private String originalId;
public static UnitOfMeasureDTO factory(UnitOfMeasure unitOfMeasure) {
UnitOfMeasureDTO dto = new UnitOfMeasureDTO();
dto.id = unitOfMeasure.getId().toString();
dto.name = unitOfMeasure.getName();
dto.description = unitOfMeasure.getDescription();
dto.sourceInfoCompanyName = unitOfMeasure.getSourceInfo().getSourceCompany().getName();
dto.originalId = unitOfMeasure.getOriginalId();
return dto;
}
}
controller:
#RestController
#RequestMapping(UnitOfMeasureController.BASE_URL)
public class UnitOfMeasureController {
public static final String BASE_URL = "/api/sust/v1/unitOfMeasures";
private final IUnitOfMeasureService unitOfMeasureService;
public UnitOfMeasureController(IUnitOfMeasureService unitOfMeasureService) {
this.unitOfMeasureService = unitOfMeasureService;
}
#GetMapping(path = "/{id}")
#ResponseStatus(HttpStatus.OK)
public UnitOfMeasureDTO getUnitOfMeasureDTO(#PathVariable("id") UUID id) {
UnitOfMeasureDTO unitOfMeasureDTO = unitOfMeasureService.getUnitOfMeasureById(id);
return unitOfMeasureDTO;
}
So in my service I have getUnitOfMeasureById(UUID id) that return a UnitOfMeasureDTO.
Now I need to call, from another service, getUnitOfMeasureById(UUID id) that return the domain entity UnitOfMeasure. I think it's correct to call a service method from another service (not a controller method!) and the separation between business logic is at the service layer. So is it correct to have 2 methods: getUnitOfMeasureDTOById and getUnitOfMeasureById in the service? (getUnitOfMeasureDTOById call getUnitOfMeasureById to avoid code duplication)
is it posible to generate a custom "presence checking" method name, being a method of the property itself rather the owning object?
I know I can use hasProperty() methods to check for presence of a value...
https://mapstruct.org/documentation/stable/reference/html/#source-presence-check
but with Optional or JsonNullable (from OpenApi nonullable) that checking method is on the property itself, not on the owning object... :-(
I can map JsonNullable or Optional easyly 'using' or extending a simple custom Mapper
#Mapper
public class JsonNullableMapper {
public <T> T fromJsonNullable(final JsonNullable<T> jsonNullable) {
return jsonNullable.orElse(null);
}
public <T> JsonNullable<T> asJsonNullable(final T nullable) {
return nullable != null ? JsonNullable.of(nullable) : JsonNullable.undefined();
}
}
what I would like to achieve is something like this as "presence check":
if(source.getProperty().isPresent()) {
target.set(customMapper.map(source.getProperty()));
}
Any one found a solution for this?
Thanks and regards
I have managed to implement custom lombok extension which generates "presence checknig" methods.
Here is an example project. In short I added #PresenceChecker annotation and implemented Lombok Javac Annotation handler.
It's possible to use it together with other Lombok annotations:
#Getter
#Setter
public class User {
private String name;
}
#Getter
#Setter
#PresenceChecker
public class UserUpdateDto {
private String name;
}
//MapStruct Mapper interface declaration
#Mapper
public interface UserMapper {
void updateUser(UserUpdateDto dto, #MappingTarget User user);
}
Generated code:
public class User {
private String name;
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
}
public class UserUpdateDto {
private boolean hasName;
private String name;
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
this.hasName = true;
}
public boolean hasName() {
return this.hasName;
}
}
//MapStruct Mapper implementation
public class UserMapperImpl implements UserMapper {
#Override
public void updateUser(UserUpdateDto dto, User user) {
if ( dto == null ) {
return;
}
if ( dto.hasName() ) {
user.setName( dto.getName() );
}
}
}
The answer is unfortunately a straight no.
It is not possible in the current version of MapStruct (1.3.1final) and its not on the shortlist for 1.4.0. You could open up an issue on the git repo of MapStruct as feature request.
I user a CRUDRepository in my spring data redis project to persist a redis hash in my redis cluster. i have rest api written to persist and get thte values of the data. this works fine.
however my entity annotated with RedisHash is being saved as a set / and i am not able to look inside the value using redis cli.
how do i look inside a set data type(without popping) in redis cli
i looked at redis commands page https://redis.io/commands#set
i only get operations which can pop value . i neeed to simply peek
EDIT:
to make things clearer, i am using spring crudrepo to save the user entity into redis data store. the user entity gets saved as a set data type.
when i query back the user details, i can see entire details of the user
{
userName: "somak",
userSurName: "dattta",
age: 23,
zipCode: "ah56h"
}
i essentially want to do the same using redis cli... but all i get is
127.0.0.1:6379> smembers user
1) "somak"
how do i look inside the somak object.
#RestController
#RequestMapping("/immem/core/user")
public class UserController {
#Autowired
private UserRepository userRepository;
#RequestMapping(path = "/save", method = RequestMethod.GET, produces = "application/json")
#ResponseStatus(HttpStatus.OK)
public void saveUserDetails() {
User user = new User();
user.setAge(23);
user.setUserName("somak");
user.setUserSurName("dattta");
user.setZipCode("ah56h");
userRepository.save(user);
}
#RequestMapping(path="/get/{username}", method = RequestMethod.GET, produces = "application/json")
public User getUserDetails(#PathVariable("username") String userName) {
return userRepository.findById(userName).get();
}
}
#Repository
public interface UserRepository extends CrudRepository<User, String>{
}
#RedisHash("user")
public class User {
private #Id String userName;
private #Indexed String userSurName;
private #Indexed int age;
private String zipCode;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserSurName() {
return userSurName;
}
public void setUserSurName(String userSurName) {
this.userSurName = userSurName;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getZipCode() {
return zipCode;
}
public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}
}
I don't understant your descr with your problem, but I understand your title.
In redis set, the member is always string type.
I hope you can offer more info about UserRepository.save:
User user = new User();
user.setAge(23);
user.setUserName("somak");
user.setUserSurName("dattta");
user.setZipCode("ah56h");
userRepository.save(user);
And you can check your redis data and check data type when rest api invoked.
I have this simple REST API that i created with Spring Boot.
In this app, I have a a POJO called Expense with 4 fields. I have a no Argument constructor and another constructor that takes only two inputs. One String value "item" and one Integer value "amount". The date is set using the LocalData.now() method and the id is set automatically in a MySql db running in the server.
Here's my Entity class
#Entity
public class Expense {
#Id
#GeneratedValue (strategy = GenerationType.AUTO)
private Integer id;
private String date;
private String item;
private Integer amount;
//No Arg Construction required by JPA
public Expense() {
}
public Expense(String item, Integer amount) {
this.date = LocalDate.now().toString();
this.item = item;
this.amount = amount;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getItem() {
return item;
}
public void setItem(String item) {
this.item = item;
}
public Integer getAmount() {
return amount;
}
public void setAmount(Integer amount) {
this.amount = amount;
}
}
I have another class with RestController annotation where i have set a method to post Expense object with a post method using Request Mapping annotation.
#RestController
public class ExpController {
private ExpService expService;
private ExpenseRepo expenseRepo;
#Autowired
public ExpController(ExpService expService, ExpenseRepo expenseRepo) {
this.expService = expService;
this.expenseRepo = expenseRepo;
}
#RequestMapping(path = "/addExp", method=RequestMethod.POST)
public void addExp(Expense expense){
expenseRepo.save(expense);
}
}
Now finally i am using PostMan to make the HTTP Post Request. I have made a simple Json Format text to send Item and Amount
{
"item":"Bread",
"amount": 75
}
After I make the post request, all i can see is that a new Entry is created but all values are set to null.
I have done some experimentation and found out that the expenseRepo.save(expense) method is only using the default no Arg constructor to save the data. But it's not using the second constructor that takes the two parameters that I am passing through Postman
How to solve this issue. Please help
Change your controller method like this
#RequestMapping(path = "/addExp", method=RequestMethod.POST)
public void addExp(#RequestBody Expense expense){
expenseRepo.save(expense);
}
You need to use #RequestBody
I have two entity class.one is PhaseEntity and another is TaskEntity. PhaseId will be the foreign key of TaskEntity class. I can create and save the value to the database but cannot update the database.
Portion of TaskEntity class:
#ManyToOne(optional=false)
#JoinColumn(name="phaseId")
private PhaseEntity phaseEntity;
Controller class:
public class TaskController {
#Autowired
private TaskService taskService;
#Autowired
private PhaseService phaseService;
#RequestMapping(value="/task/create",method=RequestMethod.GET)
public String createForm(Model model,Principal principal){
model.addAttribute(new TaskEntity());
model.addAttribute("body", "task/task-create");
model.addAttribute("generaltaskDto",new GeneralTaskDto());
model.addAttribute("phaseEntities", phaseService.phaseList());
return "layouts/default";
}
#RequestMapping(value="/task/create",method=RequestMethod.POST)
public String createFormPost(Model model,GeneralTaskDto generaltaskDto,BindingResult result){
TaskEntity taskAndPhase=generaltaskDto.getTaskEntity();
taskAndPhase.setPhaseEntity(phaseService.getPhaseByPhaseId(generaltaskDto.getPhaseId()));
taskService.saveTask(taskAndPhase);
return "redirect:/task/list";
}
#GetMapping(value="/task/update/{id}")
public String updateTask(Model model,#PathVariable String id){
TaskEntity taskEntity= taskService.getTaskId(Integer.parseInt(id));
model.addAttribute("body", "task/task-create");
model.addAttribute("phaseEntities", phaseService.phaseList());
return "layouts/default";
}
GeneraltaskDto class:
public class GeneralTaskDto {
private TaskEntity taskEntity=new TaskEntity();
private Integer phaseId;
public TaskEntity getTaskEntity() {
return taskEntity;
}
public void setTaskEntity(TaskEntity taskEntity) {
this.taskEntity = taskEntity;
}
public Integer getPhaseId() {
return phaseId;
}
public void setPhaseId(Integer phaseId) {
this.phaseId = phaseId;
}
}
here is the client page of the application
can anyone help plz how to update the database with controller request. Thanks in advance.
Please try adding these lines in your controller under updateTask method after TaskEntity taskEntity= taskService.getTaskId(Integer.parseInt(id)); line.
PhaseEntity phaseEntity=taskEntity.getPhaseEntity();
generaltaskDto.setTaskEntity(taskEntity);
generaltaskDto.setPhaseId(phaseEntity.getPhaseId());
model.addAttribute("generaltaskDto", generaltaskDto);