小编mos*_*jig的帖子

我最近升级到Hibernate 4.0.1.Final并在上下文启动时收到以下错误:

Caused by: java.lang.NoClassDefFoundError: org/hibernate/util/DTDEntityResolver
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2823)
    at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1160)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1655)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533)
    at org.hibernate.cfg.Configuration.reset(Configuration.java:322)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:261)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:265)
    at org.hibernate.ejb.Ejb3Configuration.<clinit>(Ejb3Configuration.java:150)
    at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:71)
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:257)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
    ... 65 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.util.DTDEntityResolver
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1688)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533)

我的配置如下:

<!-- Holding Properties for hibernate -->
    <context:property-placeholder location="classpath:hibernate.properties"/>

    <!-- Configure annotated beans -->
    <context:annotation-config />
    <context:component-scan base-package="com.mypackage" />

    <!-- Drives transactions using local JPA APIs -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
    <bean …

使用以下内容

import groovy.sql.Sql
def sql = Sql.newInstance("jdbc:mysql://localhost:3306/eventDb", "user",
        "pwd", "com.mysql.jdbc.Driver")

def sqlInsert = "INSERT INTO GTEST (EVENTID,TSTAMP,USER_ID,USER_FIRST_NAME) VALUES (?,?,?,?)"
def sqlParams = ['EVENTID':0, 'TSTAMP':'','USER_ID':'janew','USER_FIRST_NAME':'janewithaverylongnamesothatitdoesntfitwell']
sqlParams['TSTAMP'] = new Date()

sql.withTransaction {stmt ->
    def eventId = sql.executeInsert("INSERT INTO EVENTS (LOGID,TSTAMP) VALUES (2,CURRENT_TIMESTAMP)")
    sqlParams['EVENTID'] = eventId [0][0]
    sql.executeInsert(sqlInsert, sqlParams.values().toList())
}

第二个执行将失败,但第一个插入不会回滚.我在这做错了什么？

我试图通过jpa持久化/合并一个全新的对象图,但似乎持久性的顺序是不正确的,因为它试图保存对其父项存在约束的子对象.

public class ObjectA implements Serializable {
  ...
  @OneToMany(cascade = CascadeType.ALL, mappedBy = "objectAId")
  private List<ObjectB> objectBList;
  ...
}

和

public class ObjectB implements Serializable {
  ...
  @JoinColumn(name = "OBJECT_A_ID", referencedColumnName = "ID", nullable = false)
  @ManyToOne(optional = false)
  private ObjectA objectAId;
  ...
}

我将创建一个新的实体ObjectA以及几个新的ObjectB实体并将它们添加到对象A.当我合并ObjectA时,我得到以下内容:

org.hibernate.PropertyValueException: not-null property references a null or transient value: com.mycompany.data.ObjectB.objectAId

我错过了什么或做错了什么？

尝试按照指南在 Spring Boot 中对 JPA 层执行测试切片，但验证约束似乎没有触发。我的设置如下

@SpringBootApplication
public class MyApplication {

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

@Configuration
@EnableAutoConfiguration
@EnableJpaRepositories(basePackages = "com.myapp.core.dao")
@EntityScan(basePackages = {"com.myapp.core.entity"})
    public class CoreConfig {
}

@Entity
@Table(name = "users")
public class Users implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @NotNull
    @Size(min = 1, max = 50)
    @Column(name = "username")
    private String username;

    ...
}


public interface UsersDAO extends CrudRepository<Users, String> {
}


@RunWith(SpringRunner.class)
@DataJpaTest
@AutoConfigureTestDatabase(replace=Replace.NONE)
public …