无法创建请求的服务[org.hibernate .engine.jdbc.env.spi.JdbcEnvironment] -MySQL [英] Unable to create requested service [org.hibernate .engine.jdbc.env.spi.JdbcEnvironment]-MySQL
问题描述
我是Hibernate的新手.我目前正在使用Spring引导框架，并试图通过hibernate创建数据库表.
I am a newbie to Hibernate. I am currently using Spring boot framework and trying to create database tables through hibernate.
我知道之前也问过同样的问题，但是我似乎无法根据我的环境弄清楚该错误的解决方法.
I know the same question is asked before but I can't seem to figure out how to fix the error based on my environment.
hibernate.cfg.xml
hibernate.cfg.xml
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">org.mm.mysql.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306</property>
<property name="connection_userid">user</property>
<property name="connection_pwd">pass</property>
<!-- JDBC connection pool (use the built-in) -->
<property name="connection_pool_size">true</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.MySQLDialect</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">1</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbmdl.auto">update</property>
<!-- Names the annotated entity class -->
<mapping class="com.test.springboot.model.AdultParticipant" />
</session-factory>
主班
public static void main(String[] args) throws Exception {
SpringApplication.run(WebApplication.class, args);
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
SessionFactory factory = cfg.buildSessionFactory();
Session session = factory.openSession();
Transaction t = session.beginTransaction();
AdultParticipant ap = new AdultParticipant();
ap.setFirstName("User");
ap.setLastName("UserLastName");
session.persist(ap);
t.commit();
session.close();
System.out.println("successfully saved");
POJO类
@Entity
@Table(name = "adultparticipant")
public class AdultParticipant {
@GeneratedValue
@Id
@Column (name = "id")
private int id;
@Column (name = "firstName")
private String firstName;
@Column (name = "lastName")
private String lastName;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
DAOImpl类
public class AdultParticipantDAOImpl implements AdultParticipantDAO{
private SessionFactory sessionFactory;
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
@Override
public void save(AdultParticipant ap) {
Session session = this.sessionFactory.openSession();
Transaction tx = session.beginTransaction();
session.persist(ap);
tx.commit();
session.close();
}
@SuppressWarnings("unchecked")
@Override
public List<AdultParticipant> list() {
Session session = this.sessionFactory.openSession();
List<AdultParticipant> adultParticipants = session.createQuery("from AdultParticipant").list();
session.close();
return adultParticipants;
}
}
DAO类
public interface AdultParticipantDAO {
public void save(AdultParticipant p);
public List<AdultParticipant> list();
}
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>
<artifactId>hello-springboot</artifactId>
<name>hello-springboot</name>
<description>hello-springboot</description>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.5.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
控制台错误
2017-03-13 11:48:40.512 WARN 9532 --- [ main] org.hibernate.orm.connections.pooling : HHH10001002: Using H
ibernate built-in connection pool (not for production use!)
Exception in thread "main" org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate
.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:271)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:233)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
推荐答案
将MySql驱动程序升级到 mysql-connector -java-8.0.17 和
Upgrade MySql driver to mysql-connector-java - 8.0.17 and
正在使用 大于MySQL 5.5 的用户版本
Those who are using greater than MySQL 5.5 version
更改其驱动程序属性
从 com.mysql.jdbc.Driver 到 com.mysql.cj.jdbc.Driver
from com.mysql.jdbc.Driver to com.mysql.cj.jdbc.Driver
因为:
正在加载com.mysql.jdbc.Driver类.不推荐使用.新的 驱动程序类是com.mysql.cj.jdbc.Driver.驱动程序自动 通过SPI注册并手动加载驱动程序类 通常是不必要的.INFO-HHH000401:使用驱动程序 URL上的[com.mysql.jdbc.Driver]....
Loading class com.mysql.jdbc.Driver. This is deprecated. The new driver class is com.mysql.cj.jdbc.Driver. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.INFO - HHH000401: using driver [com.mysql.jdbc.Driver] at URL....
在 hibernate.properties
in hibernate.properties
hibernate.connection.driver_class = com.mysql.cj.jdbc.Driver
或(如果您使用的是 hibernate.cfg.xml 更新
or if you are using hibernate.cfg.xml update
<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
这篇关于无法创建请求的服务[org.hibernate .engine.jdbc.env.spi.JdbcEnvironment] -MySQL的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
