При попытке обратиться к методу по пути /all получаю ошибку.
В Glassfish создал Conection Pool и JDBC Resource. В приложении настроил persistense.xml. Создал класс для тестирования и прописал PersistenceContext. EntityManager удалось получить. Не являлся Null. Все хорошо. Дальше я попытался создать контроллер и сервис. В данном случае получаю ошибку, а причину понять не могу.
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MyController
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| import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
@Path("/controller")
public class MyController {
@Inject
private MyService service;
@Path("/all")
@GET
@Produces(MediaType.TEXT_PLAIN)
public String getAll(){
String res = "Результат:" + service.getAll().size();
return res;
}
} |
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| import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import java.util.List;
@Stateless
public class MyService {
@PersistenceContext(unitName = "test")
private EntityManager em;
public List<Test> getAll(){
TypedQuery<Test> query = em.createQuery("select u form Test u", Test.class);
return query.getResultList();
}
} |
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| import javax.persistence.*;
@Entity
@Table(name = "Test")
public class Test {
@Id
private int id;
public int getId(){
return this.id;
}
public void setId(int id){
this.id = id;
}
} |
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| XML |
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| <?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="test" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/myresource</jta-data-source>
<class>Test</class>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.DerbyDialect"/>
</properties>
</persistence-unit>
</persistence> |
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| <?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>testhibernate</groupId>
<artifactId>testhibernate</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.10.Final</version>
</dependency>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<version>10.12.1.1</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
</dependency>
<!--
an slf4j implementation is needed by
hibernate so that it could log its *stuff*
-->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.6.4</version>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<finalName>myServlet</finalName>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>
<failOnMissingWebXml>true</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.glassfish</groupId>
<artifactId>maven-embedded-glassfish-plugin</artifactId>
<version>3.1</version>
</plugin>
</plugins>
</build>
</project> |
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