Elvis:
Trato de utilizar Query DSL con MongoDB en la primavera de arranque y me da un error. La aplicación está trabajando con éxito sin necesidad de utilizar la biblioteca para la consulta de DSL para MongoDB. Y quiero utilizar esta biblioteca porque quiero utilizar consultas más complejas. El código debería funcionar, creo que hay un poco en algún error.
El problema es cuando hago clic Maven empaquetar consigo estos errores, desafortunadamente no puedo publicar toda la salida aquí:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hotelController' defined in file [C:\Users\dgs\IdeaProjects\springboot-mongodb\target\classes\com\dgs\springbootmongodb\controller\HotelController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hotelController' defined in file [C:\Users\dgs\IdeaProjects\springboot-mongodb\target\classes\com\dgs\springbootmongodb\controller\HotelController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 4.26 s <<< FAILURE! - in com.dgs.springbootmongodb.SpringbootMongodbApplicationTests
[ERROR] contextLoads(com.dgs.springbootmongodb.SpringbootMongodbApplicationTests) Time elapsed: 0.001 s <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'hotelController' defined in file [C:\Users\dgs\IdeaProjects\springboot-mongodb\target\classes\com\dgs\springbootmongodb\controller\HotelController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hotelRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.mongodb.repository.support.QuerydslMongoPredicateExecutor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: java.lang.IllegalArgumentException: Did not find a query class com.dgs.springbootmongodb.models.QHotel for domain class com.dgs.springbootmongodb.models.Hotel!
Caused by: java.lang.ClassNotFoundException: com.dgs.springbootmongodb.models.QHotel
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.21.0:test (default-test) on project springboot-mongodb: There are test failures.
Es una aplicación de reservas de hotel y este es el código:
El modelo de hotel:
package com.dgs.springbootmongodb.models;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.index.IndexDirection;
import org.springframework.data.mongodb.core.index.Indexed;
import org.springframework.data.mongodb.core.mapping.Document;
import java.util.ArrayList;
import java.util.List;
// The Hotel is the aggregate root so this is the entity on which we will apply our annotations
@Document(collection = "Hotels")
public class Hotel {
@Id
private String id;
private String name;
@Indexed(direction = IndexDirection.ASCENDING)
private int pricePerNight;
private Address address;
private List<Review> reviews;
protected Hotel() {
this.reviews = new ArrayList<>();
}
public Hotel(String name, int pricePerNight, Address address, List<Review> reviews) {
this.name = name;
this.pricePerNight = pricePerNight;
this.address = address;
this.reviews = reviews;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public int getPricePerNight() {
return pricePerNight;
}
public Address getAddress() {
return address;
}
public List<Review> getReviews() {
return reviews;
}
}
La interfaz HotelRepository:
package com.dgs.springbootmongodb.dao;
import com.dgs.springbootmongodb.models.Hotel;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.data.mongodb.repository.Query;
import org.springframework.data.querydsl.QuerydslPredicateExecutor;
import org.springframework.stereotype.Repository;
import java.util.List;
@Repository
public interface HotelRepository extends MongoRepository<Hotel, String>, QuerydslPredicateExecutor<Hotel> {
// findBy + PricePerNight (property name) + LessThan (filter)
List<Hotel> findByPricePerNightLessThan(int maxPrice);
@Query(value = "{address.city:?0}")
List<Hotel> findByCity(String city);
}
El HotelController:
package com.dgs.springbootmongodb.controller;
import com.dgs.springbootmongodb.dao.HotelRepository;
import com.dgs.springbootmongodb.models.Hotel;
import org.springframework.web.bind.annotation.*;
import java.util.List;
import java.util.Optional;
@RestController
@RequestMapping("/hotels")
public class HotelController {
private HotelRepository hotelRepository;
public HotelController(HotelRepository hotelRepository) {
this.hotelRepository = hotelRepository;
}
@GetMapping("/all")
public List<Hotel> getAllHotels() {
List<Hotel> hotels = hotelRepository.findAll();
return hotels;
}
@GetMapping("/{id}")
public Optional<Hotel> getOneHotel(@PathVariable String id) {
return hotelRepository.findById(id);
}
@PostMapping
public Hotel create(@RequestBody Hotel hotel) {
return hotelRepository.save(hotel);
}
@PutMapping
public Hotel update(@RequestBody Hotel hotel) {
return hotelRepository.save(hotel);
}
@DeleteMapping("/delete/{id}")
public List<Hotel> delete(@PathVariable String id) {
hotelRepository.deleteById(id);
return hotelRepository.findAll();
}
@GetMapping("/price/{maxPrice}")
public List<Hotel> getByPricePerNight(@PathVariable int maxPrice) {
List<Hotel> hotels = hotelRepository.findByPricePerNightLessThan(maxPrice);
return hotels;
}
@GetMapping("address/{city}")
public List<Hotel> getByCity(@PathVariable String city) {
List<Hotel> hotels = hotelRepository.findByCity(city);
return hotels;
}
}
Este es el pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.dgs</groupId>
<artifactId>springboot-mongodb</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot-mongodb</name>
<description>Demo project for Spring Boot with Mongo DB</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Add support for Mongo Query DSL -->
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-mongodb</artifactId>
<version>4.1.3</version>
<exclusions>
<exclusion>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<!-- Add plugin for Mongo Query DSL -->
<plugin>
<groupId>com.mysema.maven</groupId>
<artifactId>apt-maven-plugin</artifactId>
<version>1.1.3</version>
<dependencies>
<dependency>
<groupId>com.querydsl</groupId>
<artifactId>querydsl-apt</artifactId>
<version>4.1.3</version>
</dependency>
</dependencies>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>process</goal>
</goals>
<configuration>
<outputDirectory>target/generated-sources/annotations</outputDirectory>
<processor>
org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor
</processor>
<logOnlyOnError>true</logOnlyOnError>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Actualizar
Esta es la clase de arranque:
@SpringBootApplication
public class SpringbootMongodbApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootMongodbApplication.class, args);
}
}
Esta es la estructura de la aplicación:
user2683814:
Quitar la carpeta de destino y comenzar de nuevo.
apt-experto-plugin genera, compila la fuente y se suma a la ruta de clase. Ajuste directorio de salida del plugin para meta / Fuentes generadas / apto.
Ejecutar la fase experto paquete y verificar los archivos de clase Q se encuentran dentro de los paquetes de modelos en los objetivos / clases ubicación y archivos de origen q son modelos dentro del paquete de destino / Fuentes generadas / apto.