Hibernate JPA 的异常

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大家好,以下是我用hibernate jpa的实作出现的异常
Exception in thread "main" javax.persistence.RollbackException: Error while committing the transaction

Caused by: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update

Caused by: org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update

以下是我的程式码:
package org.wisdomfish.entity;

import javax.persistence.*;
import java.util.Iterator;
import java.util.List;

public class UserTest
public static void main(String[] args)
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("JavaApplication2PU");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
User t = new User();
t.setId(2);
t.setUsername("无名氏");
t.setPassword("123141254");
em.persist(t);
em.getTransaction().commit();


--------------------------------------
package org.wisdomfish.entity;

import javax.persistence.*;

@Entity
@Table(name = "user")
public class User

private static final long serialVersionUID = 1L;
@Id
@Basic(optional = false)
@Column(name = "id")
private Integer id;
@Column(name = "username")
private String username;
@Column(name = "password")
private String password;

public User()

public User(Integer id)
this.id = id;


public int getId()
return id;


public void setId(int id)
this.id = id;


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;


--------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="JavaApplication2PU" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>org.wisdomfish.entity.User</class>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:postgresql://localhost:5432/postgres"/>
<property name="javax.persistence.jdbc.password" value="postgres"/>
<property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver"/>
<property name="javax.persistence.jdbc.user" value="postgres"/>
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
</properties>
</persistence-unit>
</persistence>

提示SQL语法错误。查一下hibernate生成的sql语句,看有没有错误。从程序看可能是哪个列名没写对。 参考技术A em.getTransaction().begin();改为
em.beginTransaction();试试

使用 Hibernate 4、Spring 3、JPA 2 配置 MySQL5 最终有 1 个异常

【中文标题】使用 Hibernate 4、Spring 3、JPA 2 配置 MySQL5 最终有 1 个异常【英文标题】:Configuring MySQL5 with Hibernate 4, Spring 3, JPA 2 to have 1 exception in the end 【发布时间】:2013-09-08 09:26:20 【问题描述】:

我知道这个主题似乎已经存在,并且我实际上找到了一些主题,但答案对我不起作用。他们中的大多数人也使用原始的hibernate.cfg.xml,我想使用JPA2和persistence.xml来做到这一点

所以我用 Roo 开始了一个项目,我认为这会很有帮助。一开始它几乎是真实的。但是随后出现了一些依赖问题,并且在启动服务器时开始出现异常(我使用 Tomcat7 和/或 JBoss EAP6)

它似乎无法创建persistenceUnit,因为缺少一个方法......

2013-09-04 16:59:40,191 [localhost-startStop-1] ERROR org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in URL [file:/C:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/MyApp/WEB-INF/classes/META-INF/spring/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: javax.persistence.spi.PersistenceUnitInfo.getValidationMode()Ljavax/persistence/ValidationMode;
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1482)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) ... lots of blabla..



Caused by: java.lang.NoSuchMethodError: javax.persistence.spi.PersistenceUnitInfo.getValidationMode()Ljavax/persistence/ValidationMode;
    at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:642)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:75)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:288)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1541)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479)
    ... 22 more

我猜这是由于 hibernate-jpa 和 ejb3-persistence 之间的不良依赖关系,但我无法让它工作。我尝试了排除..(最终发现未找到注释...必须有所不同。

这是我的 pom.xml (

    <?xml version="1.0" encoding="UTF-8" standalone="no"?>
<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.myapp</groupId>
    <artifactId>MyApp</artifactId>
    <packaging>war</packaging>
    <version>0.1.0.BUILD-SNAPSHOT</version>
    <name>MyApp</name>
    <properties>
        <aspectj.version>1.7.2</aspectj.version>
        <java.version>1.7</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <roo.version>1.2.4.RELEASE</roo.version>
        <slf4j.version>1.7.5</slf4j.version>
        <spring.version>3.2.3.RELEASE</spring.version>
        <spring.security.version>3.1.4.RELEASE</spring.security.version>
        <hibernate.version>4.2.3.Final</hibernate.version>
        <mysql.connector.version>5.1.25</mysql.connector.version>
    </properties>
    <repositories>
        <repository>
            <id>spring-maven-release</id>
            <name>Spring Maven Release Repository</name>
            <url>http://maven.springframework.org/release</url>
        </repository>
        <repository>
            <id>spring-maven-milestone</id>
            <name>Spring Maven Milestone Repository</name>
            <url>http://maven.springframework.org/milestone</url>
        </repository>
        <repository>
            <id>spring-roo-repository</id>
            <name>Spring Roo Repository</name>
            <url>http://spring-roo-repository.springsource.org/release</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-maven-release</id>
            <name>Spring Maven Release Repository</name>
            <url>http://maven.springframework.org/release</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-maven-milestone</id>
            <name>Spring Maven Milestone Repository</name>
            <url>http://maven.springframework.org/milestone</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-roo-repository</id>
            <name>Spring Roo Repository</name>
            <url>http://spring-roo-repository.springsource.org/release</url>
        </pluginRepository>
    </pluginRepositories>
    <dependencies>
        <!-- General dependencies for standard applications -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>$slf4j.version</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>$slf4j.version</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>$slf4j.version</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>$aspectj.version</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>$aspectj.version</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>net.sf.flexjson</groupId>
            <artifactId>flexjson</artifactId>
            <version>2.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.1</version>
        </dependency>
        <!-- ROO dependencies -->
        <dependency>
            <groupId>org.springframework.roo</groupId>
            <artifactId>org.springframework.roo.annotations</artifactId>
            <version>$roo.version</version>
            <scope>provided</scope>
        </dependency>
        <!-- Spring dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>$spring.version</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>$spring.version</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework</groupId>
                    <artifactId>spring-context-support</artifactId>
                </exclusion>
            </exclusions>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
        <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>$spring.version</version>
        </dependency>
        <dependency>
        <groupId>org.springframework</groupId>
            <artifactId>spring-oxm</artifactId>
            <version>$spring.version</version>
        </dependency>
         <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-crypto</artifactId>
        <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-instrument</artifactId>
            <version>$org.springframework.version</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-acl</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-aspects</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-cas</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>$spring.security.version</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-ldap</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-openid</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-remoting</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>$spring.security.version</version>
        </dependency>
        <!-- Hibernate dependencies -->
        <dependency>
            <groupId>org.hsqldb</groupId>
            <artifactId>hsqldb</artifactId>
            <version>2.2.9</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>$hibernate.version</version>
        </dependency>
       <dependency>
        <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.1-api</artifactId>
        <version>1.0.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>4.2.3.Final</version>
            <exclusions>
                <exclusion>
                    <groupId>cglib</groupId>
                    <artifactId>cglib</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>dom4j</groupId>
                    <artifactId>dom4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>ejb3-persistence</artifactId>
            <version>1.0.1.GA</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-annotations</artifactId>
            <version>3.3.1.GA</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.1.Final</version>
        </dependency>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>1.0.0.GA</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>$mysql.connector.version</version>
        </dependency>
        <dependency>
            <groupId>javax.transaction</groupId>
            <artifactId>jta</artifactId>
            <version>1.1</version>
        </dependency>

        <dependency>
            <groupId>commons-pool</groupId>
            <artifactId>commons-pool</artifactId>
            <version>1.5.6</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
            <exclusions>
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>xml-apis</groupId>
                    <artifactId>xml-apis</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <!-- <configuration> <webXml>target/web.xml</webXml> </configuration> -->
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>$java.version</source>
                    <target>$java.version</target>
                    <encoding>$project.build.sourceEncoding</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>aspectj-maven-plugin</artifactId>
                <version>1.4</version>
                <!-- NB: do not use 1.3 or 1.3.x due to MASPECTJ-90 issue  -->
                <dependencies>
                    <!-- NB: You must use Maven 2.0.9 or above or these are ignored (see MNG-2972) -->
                    <dependency>
                        <groupId>org.aspectj</groupId>
                        <artifactId>aspectjrt</artifactId>
                        <version>$aspectj.version</version>
                    </dependency>
                    <dependency>
                        <groupId>org.aspectj</groupId>
                        <artifactId>aspectjtools</artifactId>
                        <version>$aspectj.version</version>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <phase>process-sources</phase>
                        <goals>
                            <goal>compile</goal>
                            <goal>test-compile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <outxml>true</outxml>
                    <aspectLibraries>
                        <aspectLibrary>
                            <groupId>org.springframework</groupId>
                            <artifactId>spring-aspects</artifactId>
                        </aspectLibrary>
                    </aspectLibraries>
                    <source>$java.version</source>
                    <target>$java.version</target>
                    <!--
                      Aspects in src/main/java and src/main/aspects are added 
                      as default in the compile goal.
                      Aspects in src/test/java and src/test/aspects are added 
                      as default in the test-compile goal.
                      Aspects in src/main/java are added in the test-compile 
                      goal if weaveWithAspectsInMainSourceFolder is set to true
                    -->
                    <weaveWithAspectsInMainSourceFolder>false</weaveWithAspectsInMainSourceFolder>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <encoding>$project.build.sourceEncoding</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.12</version>
                <configuration>
                    <printSummary>false</printSummary>
                    <redirectTestOutputToFile>true</redirectTestOutputToFile>
                    <excludes>
                        <exclude>**/*_Roo_*</exclude>
                    </excludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-deploy-plugin</artifactId>
                <version>2.7</version>
            </plugin>
            <!-- IDE -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <!-- Note 2.8 does not work with AspectJ aspect path -->
                <configuration>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>false</downloadJavadocs>
                    <wtpversion>2.0</wtpversion>
                    <additionalBuildcommands>
                        <buildCommand>
                            <name>org.eclipse.ajdt.core.ajbuilder</name>
                            <arguments>
                                <aspectPath>org.springframework.aspects</aspectPath>
                            </arguments>
                        </buildCommand>
                        <buildCommand>
                            <name>org.springframework.ide.eclipse.core.springbuilder</name>
                        </buildCommand>
                    </additionalBuildcommands>
                    <additionalProjectnatures>
                        <projectnature>org.eclipse.ajdt.ui.ajnature</projectnature>
                        <projectnature>com.springsource.sts.roo.core.nature</projectnature>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                    </additionalProjectnatures>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-idea-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <downloadSources>true</downloadSources>
                    <dependenciesAsLibraries>true</dependenciesAsLibraries>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>tomcat-maven-plugin</artifactId>
                <version>1.1</version>
            </plugin>
            <plugin>
                <groupId>org.mortbay.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>8.1.4.v20120524</version>
                <configuration>
                    <webAppConfig>
                        <contextPath>/$project.name</contextPath>
                    </webAppConfig>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

这是我的 applicationContext.xml 位于 /META-INF/spring/

<context:property-placeholder location="classpath*:META-INF/spring/*.properties"/>

    <context:spring-configured/>

    <context:component-scan base-package="com.myapp">
        <context:exclude-filter expression=".*_Roo_.*" type="regex"/>
        <context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
    </context:component-scan>
    <bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
        <property name="driverClassName" value="$database.driverClassName"/>
        <property name="url" value="$database.url"/>
        <property name="username" value="$database.username"/>
        <property name="password" value="$database.password"/>
        <property name="testOnBorrow" value="true"/>
        <property name="testOnReturn" value="true"/>
        <property name="testWhileIdle" value="true"/>
        <property name="timeBetweenEvictionRunsMillis" value="1800000"/>
        <property name="numTestsPerEvictionRun" value="3"/>
        <property name="minEvictableIdleTimeMillis" value="1800000"/>
    </bean>
    <bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>
    <tx:annotation-driven mode="aspectj" transaction-manager="transactionManager"/>
    <bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" value="persistenceUnit"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>

现在著名的 persistence.xml 位于 /META-INF

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="persistenceUnit" transaction-type="JTA">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>java:/MySqlDS</jta-data-source>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
            <!-- value="create" to build a new database on each run; value="update" to modify an existing database; value="create-drop" means the same as "create" but also drops tables when Hibernate closes; value="validate" makes no changes to the database -->
            <property name="hibernate.hbm2ddl.auto" value="validate"/>
            <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.ImprovedNamingStrategy"/>
            <property name="hibernate.connection.charSet" value="UTF-8"/>
            <!-- Uncomment the following two properties for JBoss only -->
            <!-- property name="hibernate.validator.apply_to_ddl" value="false" /-->
            <!-- property name="hibernate.validator.autoregister_listeners" value="false" /-->
        </properties>
    </persistence-unit>
</persistence>

我终于尝试了一些东西,它可能仍然保留在代码中(如 JTA 事务类型)

jar 的版本在 pom 中。

知道为什么会这样吗?!

【问题讨论】:

如果您发现类似的问题并不能完全回答您的具体问题,请提及为什么没有帮助(以防人们试图回答时遇到问题)跨度> 答案是对 ejb3-hibernate.jar 中的类进行排除。我终于遇到了找不到注释的问题.. 【参考方案1】:

尝试删除除hibernate-entitymanager(和hibernate-validator)之外的所有Hibernate 依赖项——应该足够了。

【讨论】:

完美!!实际上,通过依赖项,hibernate 核心和所有需要的 jar 都被下载了,同时我们避免了无用的东西。非常感谢

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