java - 从maven spring mvc创建表时出现问题

Question

我无法从 maven spring mvc 自动创建表。

我正在使用maven做一个spring mvc项目。到目前为止，我没有遇到任何错误，但是当我尝试使用 applicationconfig.xml 在数据库中创建表时，它不起作用。我已经在互联网上搜索过，但我的 applicationconfig.xml 对我来说似乎很好。我没有任何错误。仍然没有创建表..

applicationconfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xmlns:jpa="http://www.springframework.org/schema/data/jpa"
   xsi:schemaLocation="
  http://www.springframework.org/schema/beans 
  http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
  http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
  http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

<bean id="entityManager" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan" value="com.milan.entities" /><!--scans model/entity/domain(name 3 but same) and registers-->
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
    <property name="jpaProperties">
        <props>
            <prop key="hibernate.hbm2ddl.auto">create-drop</prop>
            <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
            <prop key="hibernate.show_sql">true</prop>                
        </props>
    </property>
</bean>

<bean id="dataSource"
      class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <property name="url" value="jdbc:mysql://localhost:3306/inventorymanagement" />
    <property name="username" value="root" />
    <property name="password" value="" />
</bean>

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="entityManager" />
</bean>

<tx:annotation-driven />

<bean id="persistenceExceptionTranslationPostProcessor"
      class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>       
</beans>

用户类别

package com.milan.entities;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

public class User implements Serializable{
@Id
@Column(name = "USER_ID")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private long userId;

@Column(name = "USERNAME")
private String userName;

@Column(name = "PASSWORD")
private String password;

@Column(name = "IS_ENABLEd")
private boolean isEnabled;

public long getUserId() {
    return userId;
}

public void setUserId(long userId) {
    this.userId = userId;
}

public String getUserName() {
    return userName;
}

public void setUserName(String userName) {
    this.userName = userName;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public boolean isIsEnabled() {
    return isEnabled;
}

public void setIsEnabled(boolean isEnabled) {
    this.isEnabled = isEnabled;
}
}

运行程序时没有错误，但不会自动创建表。

Answer 1

将 @Entity 放在您的 User 类上，如果表仍未创建，请尝试在类上添加以下注释:

@Entity
@Table(name = "`user`")

可能会发生，因为 User 是数据库中的保留字。