I have this request and response:
#Data
public class TestRequestDto {
#Min(7)
private String name;
}
#Data
public class TestResponseDto {
private String response;
}
And I have a controller:
package com.example.validation.demo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import javax.validation.Valid;
#Slf4j
#RestController
public class TetController {
#PostMapping("/test")
public TestResponseDto getTestResponseDto(#Valid #RequestBody TestRequestDto request){
log.info(request.getName());
TestResponseDto response = new TestResponseDto();
response.setResponse("response");
return response;
}
}
I send a post request({"name":"test"}) with an invalid name but it works. What am I doing wrong?
Starting with Boot 2.3, we also need to explicitly add the spring-boot-starter-validation dependency
Related
I am expecting to receive the message "Works" on Postman (used for temporary testing until I implement the frontend and forms using HTML and CSS) when I type in the URL "http://localhost:8080/registration". This should be happening based on the code posted below. Instead, I receive the 405 Method Not Allowed Error.
WebSecurityConfig class
package com.example.finalVersionBookProject.security.config;
import com.example.finalVersionBookProject.appuser.AppUserService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
#Configuration
#EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
private final AppUserService appUserService;
private final BCryptPasswordEncoder bCryptPasswordEncoder;
public WebSecurityConfig(AppUserService appUserService, BCryptPasswordEncoder bCryptPasswordEncoder) {
this.appUserService = appUserService;
this.bCryptPasswordEncoder = bCryptPasswordEncoder;
}
Registration class
package com.example.finalVersionBookProject.registration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
#Controller
#RequestMapping(path = "/registration")
public class Registration {
private RegistrationService registrationService;
#PostMapping()
public String register(#RequestBody RegistrationRequest request) {
return registrationService.register(request);
}
}
Registration Service Class
package com.example.finalVersionBookProject.registration;
import org.springframework.stereotype.Service;
#Service
public class RegistrationService {
public String register(RegistrationRequest request) {
return "works";
}
}
I have tried replacing RestController with Controller, changing some of the annotations, both with no success. I tried using the IntelliJ debugger to resolve the issue, but it did not provide any new information that was helpful in solving the problem. I am expecting the message "Works" to be outputted to Postman, but I get the 405 Error.
When you type in URL http://localhost:8080/registration in Postman, what method did you use? I suspect you are using GET whilst your controller has a #PostMapping which support POST method.
You can try to use #GetMapping instead.
I am doing a notifications project with reactive websockets / rsockets in Spring and Vue. But I have not been able to bind my ws to the database. I'm stuck, I need help.
This is my Entity (ProductDto and ProductRequestDto are the same syntax)
package com.example.productservice.entity;
import org.springframework.data.annotation.Id;
import lombok.Data;
import lombok.ToString;
#Data
#ToString
public class Products {
#Id
private Integer id;
private String description;
private Integer price;
private String subscriber;
public Products() {
}
//Getters And Setters
}
This is my repository
package com.example.productservice.repository;
import org.springframework.data.r2dbc.repository.Query;
import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import org.springframework.stereotype.Repository;
import com.example.productservice.entity.Products;
import reactor.core.publisher.Mono;
#Repository
public interface ProductRepository extends ReactiveCrudRepository<Products, Integer> {
#Query //Example of Query (Ignore this)
("insert into products values (null, :product, :price, :subscriber)")
Mono<Boolean> insert (String product, int price, String subscriber);
}
this is my service (I leave the complete code because I think it can be useful to someone)
package com.example.productservice.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.example.productservice.dto.ProductDto;
import com.example.productservice.repository.ProductRepository;
import com.example.productservice.util.EntityDtoUtil;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.core.publisher.Sinks;
#Service
public class ProductService {
#Autowired
private ProductRepository repository;
public Flux<ProductDto> getAll(){
return this.repository.findAll()
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> getProductById(final int id){
return this.repository.findById(id)
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> insertProduct(Mono<ProductDto> productDtoMono){
return productDtoMono
.map(EntityDtoUtil::toEntity)
.flatMap(this.repository::save)
.map(EntityDtoUtil::toDto);
}
public Mono<ProductDto> updateProduct(int id, Mono<ProductDto> productDtoMono){
return this.repository.findById(id)
.flatMap(p -> productDtoMono
.map(EntityDtoUtil::toEntity)
.doOnNext(e -> e.setId(id)))
.flatMap(this.repository::save)
.map(EntityDtoUtil::toDto);
}
public Mono<Void> deleteProduct (int id) {
return this.repository.deleteById(id);
}
}
and this is my Controller
package com.example.productservice.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.example.productservice.dto.ProductDto;
import com.example.productservice.service.ProductService;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
#RestController
#RequestMapping("product")
#CrossOrigin(origins= "*", methods = {RequestMethod.GET, RequestMethod.POST})
public class ProductController {
#Autowired
private ProductService service;
#GetMapping("all")
public Flux<ProductDto> all(){
return this.service.getAll();
}
#GetMapping("{id}")
public Mono<ResponseEntity<ProductDto>> getProductById(int id){
return this.service.getProductById(id)
.map(ResponseEntity::ok)
.defaultIfEmpty(ResponseEntity.notFound().build());
}
#PostMapping
public Mono<ProductDto> insertProductTable(#RequestBody Mono<ProductDto> productDtoMono){
return this.service.insertProduct(productDtoMono);
}
#PutMapping("{id}")
public Mono<ResponseEntity<ProductDto>> updateProduct(#PathVariable int id, #RequestBody Mono<ProductDto> productMonoDto) {
return this.service.updateProduct(id, productMonoDto)
.map(ResponseEntity::ok)
.defaultIfEmpty(ResponseEntity.notFound().build());
}
#DeleteMapping
public Mono<Void> deleteProduct(#PathVariable int id){
return this.service.deleteProduct(id);
}
}
So far is my original code functional in the traditional way. I have tried ways to implement rsockets that I leave here:
my applicattion.properties in server side
spring.rsocket.server.port=7000
spring.rsocket.server.transport=tcp
spring.r2dbc.url=r2dbc:mysql://localhost:3306/people2?options=DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
spring.r2dbc.username=root
spring.r2dbc.password=
Modification in ProductService
#Service
public class ProductService {
#Autowired
private ProductRepository repository;
#Autowired
//private Sinks.Many<ProductDto> sink;
#MessageMapping("repository.findAll")
public Flux<ProductDto> getAll(){
return this.repository.findAll()
.map(EntityDtoUtil::toDto);
}
Modification in ProductController client side
#RestController
#RequestMapping("product")
#CrossOrigin(origins= "*", methods = {RequestMethod.GET, RequestMethod.POST})
public class ProductController {
#Autowired
private ProductService service;
private RSocketRequester requester;
#GetMapping("all")
public Flux<ProductDto> all(){
this.requester.route("post.findAll")
.retrieveFlux(ProductDto.class);
return this.service.getAll();
}
I bought this new book to try to learn Spring Boot quickly. It started out well, and I easily created a REST API. But then we added CrudRepository, and I'm seeing issues with the code as described in the book. Also, there is no code available to download because the author took it down from Oreily's git repo in order to fix some things...
The issue is that if I try to build the code as the book describes (without a default constructor) I get a Java error complaining that there is no default constructor. If I add a default constructor, it builds, but Spring uses it instead of the new constructor, that requires a parameter to be passed. So when I actually call the API, like if I call the /coffees endpoint, I get a java.lang.NullPointerException: null
So how is Spring supposed to know which constructor to use, and how could it pass in values for this parameter?
Here is the controller:
package com.bw.restdemo;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
#RestController
#RequestMapping("/coffees")
class RestAPIDemoController {
private final CoffeeRepository coffeeRepository;
public RestAPIDemoController(CoffeeRepository coffeeRepository) {
this.coffeeRepository = coffeeRepository;
this.coffeeRepository.saveAll(List.of(
new Coffee("Cafe Cereza"),
new Coffee("Freedom Fuel"),
new Coffee("Cold Brew"),
new Coffee("Sumatra")
));
}
public RestAPIDemoController() {
this.coffeeRepository = null;
};
//#RequestMapping(value = "/coffees", method = RequestMethod.GET)
#GetMapping
Iterable<Coffee> getCoffees() {
return coffeeRepository.findAll();
}
#GetMapping("/{id}")
Optional<Coffee> getCoffeeById(#PathVariable String id) {
return coffeeRepository.findById(id);
}
#PostMapping
Coffee postCoffee(#RequestBody Coffee coffee) {
return coffeeRepository.save(coffee);
}
#PutMapping("/{id}")
ResponseEntity<Coffee> putCoffee(#PathVariable String id, #RequestBody Coffee coffee) {
return (!coffeeRepository.existsById(id))
? new ResponseEntity<>(coffeeRepository.save(coffee), HttpStatus.CREATED)
: new ResponseEntity<>(coffeeRepository.save(coffee), HttpStatus.OK);
}
#DeleteMapping("/{id}")
void deleteCoffee(#PathVariable String id) {
coffeeRepository.deleteById(id);
}
}
Here is where I'm defining the interface:
package com.bw.restdemo;
import org.springframework.data.repository.CrudRepository;
interface CoffeeRepository extends CrudRepository<Coffee, String> {
}
And here's the main class -- apologies for the class stuffed at the bottom.
package com.bw.restdemo;
import java.util.UUID;
import javax.persistence.Entity;
import javax.persistence.Id;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class RestDemoApplication {
public static void main(String[] args) {
SpringApplication.run(RestDemoApplication.class, args);
}
}
#Entity
class Coffee {
#Id
private String id;
private String name;
public Coffee(String id, String name) {
this.id = id;
this.name = name;
}
public void setId(String id) {
this.id = id;
}
public Coffee(String name) {
this(UUID.randomUUID().toString(), name);
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
CoffeeRepository interface is missing #Repository Annotation.
Update:
Add #Repository Annotation at CoffeeRepository
Remove the default constructor from RestAPIDemoController.
package com.bw.restdemo;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
#Repository
interface CoffeeRepository extends CrudRepository<Coffee, String> {
}
Explanation
In spring framework, #Component annotation marks a java class as a bean so the component-scanning mechanism can pick it up and pull it into the application context. As #Repository serves as a specialization of #Component , it also enable annotated classes to be discovered and registered with application context.
More at HowToDoInJava - #Repository annotation in Spring Boot
I am facing an issue when I use a #Transactional annotation in a class which is extended by Service class. I know that Spring does Transaction Management only when a method is invoked by a Proxy but my problem is because of this annotation I am not able to get another Service class's property's value when accessing by object directly (property is public), but same I am able to fetch through getter method.
Controller
package com.springbootdemo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class DemoController {
#Autowired
Service1 service1;
#GetMapping("/")
public void index() {
service1.doSomething();
}
}
Service1
package com.springbootdemo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
#Component
public class Service1 {
#Autowired
Service2 service2;
public void doSomething(){
service2.setSname("Hello");
System.out.println("sname==> "+service2.sname);
System.out.println("getSname==>"+service2.getSname());
}
}
UtilBean
package com.springbootdemo;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
#Component
public class UtilBean {
#Transactional(propagation = Propagation.REQUIRES_NEW)
public String appendString(String s1) {
return " Hi "+ s1;
}
}
Service2
package com.springbootdemo;
import org.springframework.stereotype.Component;
#Component
public class Service2 extends UtilBean{
public String sname;
public String getSname() {
return sname;
}
public void setSname(String sname) {
this.sname = sname;
}
}
application.properties
management.endpoints.web.exposure.include=*
#management.endpoints.web.exposure.exclude=loggers
#security.user.name=admin
#security.user.password=admin
spring.datasource.url=jdbc:mysql://192.168.0.10:3306/aswaraj?zeroDateTimeBehavior=convertToNull&useSSL=false
spring.datasource.username=root
spring.datasource.password=test
spring.datasource.platform=mysql
spring.session.store-type=none
security.basic.enabled=false
Output
sname==> null
getSname==>Hello
My issue is I get 404 error when calling the spring boot application on localhost:8080/users
package com.myproj.users.controller;
import java.nio.file.attribute.UserPrincipalNotFoundException;
import java.security.Principal;
import java.util.concurrent.atomic.AtomicLong;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.myproj.users.Greeting;
import com.myproj.users.PhysicalCharacteristicsRepository;
import com.myproj.users.UserRepository;
import com.myproj.users.UserResource;
#RestController
#RequestMapping("/users")
public class UserRestController {
private UserRepository userRepository;
private PhysicalCharacteristicsRepository characteristicsRepository;
#RequestMapping(value = "/greeting/", method = RequestMethod.GET)
public String greeting() throws UserPrincipalNotFoundException {
return "Greeting";
}
#RequestMapping(value = "/error/")
public String error() {
return "Error handling";
}
private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();
#RequestMapping(method = RequestMethod.GET)
public #ResponseBody Greeting sayHello(#RequestParam(value = "name", required = false, defaultValue = "Stranger") String name) {
return new Greeting(counter.incrementAndGet(), String.format(template, name));
}
#Autowired
UserRestController(UserRepository userRepository, PhysicalCharacteristicsRepository characteristicsRepository) {
this.userRepository = userRepository;
this.characteristicsRepository = characteristicsRepository;
}
}
package com.myproj.users.controller;
import java.nio.file.attribute.UserPrincipalNotFoundException;
import org.springframework.hateoas.VndErrors;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
import com.weather.exceptions.UserNotFoundException;
#ControllerAdvice
class UserControllerAdvice {
#ResponseBody
#ExceptionHandler(UserNotFoundException.class)
#ResponseStatus(HttpStatus.NOT_FOUND)
VndErrors userNotFoundExceptionHandler(UserNotFoundException ex) {
return new VndErrors("error", ex.getMessage());
}
#ResponseBody
#ExceptionHandler(UserPrincipalNotFoundException.class)
#ResponseStatus(HttpStatus.NOT_FOUND)
VndErrors userPrincipalNotFoundException(UserPrincipalNotFoundException ex) {
return new VndErrors("error", ex.getMessage());
}
}
package com.myproj.users;
public class Greeting {
private final long id;
private final String content;
public Greeting(long id, String content) {
this.id = id;
this.content = content;
}
public long getId() {
return id;
}
public String getContent() {
return content;
}
}
I have tested the spring project in https://spring.io/guides/gs/actuator-service/ and it worked so I ignore what's going on.
I have defined a controller to manage errors. I have copied it from Spring Boot Remove Whitelabel Error Page
The new Application class is the following :
package com.test;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
#Configuration
#ComponentScan(basePackages = "com.test")
#EnableAutoConfiguration
#EnableJpaRepositories(basePackages = "com.test")
#EntityScan(basePackages = "com.test")
public class Application {
static final Logger logger = LogManager.getLogger(Application.class.getName());
public static void main(String[] args) {
logger.debug("Entered the application");
SpringApplication.run(Application.class, args);
}
private Application() {
}
}
As you can see I have added a controller in ComponentScan as follows :
#ComponentScan(basePackages = "com.test")
#EnableJpaRepositories(basePackages = "com.test")
#EntityScan(basePackages = "com.test")
To test I used curl curl http://localhost:9002/eleves/Hammami/ and firefox.
Changing #Controller to #RestController solved my issue.
In my case I was using thymeleaf(MVC), after that I switched to pure backend.