使用jpa实体管理器在spring应用程序中将blob导入mysql
我正在修改spring petclinic应用程序以将文档从用户的计算机导入MySQL。 我正在使用petclinic应用程序中的jpa体系结构，该应用程序在存储库文件中使用了EntityManager对象。 我理解我需要使用以下语法从EntityManager公开会话对象，然后创建一个blob插入到数据库中：
Session session = em.unwrap(Session.class);//em is an EntityManager Blob blob = (blob)Hibernate.getLobCreator(session).createBlob(document.getFile().getInputStream(), document.getFile().getSize()); 根据petclinic jpa架构，我使用了五个java文件：
View/JSP: CreateOrUpdateDocument.jsp Model: Document.java Controller: DocumentController.java Repository: JpaDocumentRepository.java Service: ClinicServiceImpl.java
我的问题是在哪里设置它以及如何设置它。 现在，我的代码抛出了以下exception，我认为这与Document.java的file属性没有给出任何注释这一事实有关：
org.hibernate.MappingException: Could not determine type for: org.springframework.web.multipart.MultipartFile, at table: documents, for columns: [org.hibernate.mapping.Column(file)
我将在下面包含每个文件的相关部分，堆栈跟踪和文档表的sql定义。 为了使文档成功地从用户的计算机进入服务器上的MySQL数据库的文档表，我需要做出哪些更改？
CreateOrUpdateDocument.jsp：
$(function () {$("#created").datepicker({ dateFormat: 'yy/mm/dd'});}); New Document
Document.java：
@Entity @Table(name = "documents") public class Document { @Id @GeneratedValue @Column(name="id") private Integer id; @ManyToOne @JoinColumn(name = "client_id") private Patient patient; @ManyToOne @JoinColumn(name = "type_id") private DocumentType type; @Column(name="name") private String name; @Column(name="description") private String description; @Column(name="filename") private String filename; @Column(name="content") @Lob private Blob content; @Column(name="content_type") private String contentType; @Column(name = "created") private Date created; private MultipartFile file; public Integer getId(){return id;} public void setId(Integer i){id=i;} protected void setPatient(Patient patient) {this.patient = patient;} public Patient getPatient(){return this.patient;} public void setType(DocumentType type) {this.type = type;} public DocumentType getType() {return this.type;} public String getName(){return name;} public void setName(String nm){name=nm;} public String getDescription(){return description;} public void setDescription(String desc){description=desc;} public String getFileName(){return filename;} public void setFileName(String fn){filename=fn;} public Blob getContent(){return content;} public void setContent(Blob ct){content=ct;} public String getContentType(){return contentType;} public void setContentType(String ctype){contentType=ctype;} public void setCreated(){created=new java.sql.Date(System.currentTimeMillis());} public Date getCreated() {return this.created;} public MultipartFile getFile(){return file;} public void setFile(MultipartFile f){file=f;} @Override public String toString() {return this.getName();} public boolean isNew() {return (this.id == null);} }
这是DocumentController.java。 注意processCreationForm（）方法处理来自jsp的表单：
@Controller @SessionAttributes("document") public class DocumentController { private final ClinicService clinicService; @Autowired public DocumentController(ClinicService clinicService) {this.clinicService = clinicService;} @ModelAttribute("types") public Collection populateDocumentTypes() {return this.clinicService.findDocumentTypes();} @InitBinder public void setAllowedFields(WebDataBinder dataBinder) {dataBinder.setDisallowedFields("id");} @RequestMapping(value = "/patients/{patientId}/documents/new", method = RequestMethod.GET) public String initCreationForm(@PathVariable("patientId") int patientId, Map model) { Patient patient = this.clinicService.findPatientById(patientId); Document document = new Document(); patient.addDocument(document); model.put("document", document); return "documents/createOrUpdateDocumentForm"; } //THIS IS THE METHOD THAT HANDLES THE FORM @RequestMapping(value = "/patients/{patientId}/documents/new", headers = "content-type=multipart/*", method = RequestMethod.POST) public String processCreationForm(@ModelAttribute("document") Document document, BindingResult result, SessionStatus status, @RequestParam("file") final MultipartFile file) { document.setCreated(); document.setFile(file); new DocumentValidator().validate(document, result); if (result.hasErrors()) {return "documents/createOrUpdateDocumentForm";} else { this.clinicService.saveDocument(document); status.setComplete(); return "redirect:/patients?patientID={patientId}"; } } @RequestMapping(value = "/patients/*/documents/{documentId}/edit", method = RequestMethod.GET) public String initUpdateForm(@PathVariable("documentId") int documentId, Map model) { Document document = this.clinicService.findDocumentById(documentId); model.put("document", document); return "documents/createOrUpdateDocumentForm"; } @RequestMapping(value = "/patients/{patientId}/documents/{documentId}/edit", method = {RequestMethod.PUT, RequestMethod.POST}) public String processUpdateForm(@ModelAttribute("document") Document document, BindingResult result, SessionStatus status) { new DocumentValidator().validate(document, result); if (result.hasErrors()) {return "documents/createOrUpdateDocumentForm";} else { this.clinicService.saveDocument(document); status.setComplete(); return "redirect:/patients/{patientId}"; } } }
JpaDocumentRepository.java。 请注意save（）方法应该处理blob文档：
@Repository public class JpaDocumentRepositoryImpl implements DocumentRepository { @PersistenceContext private EntityManager em; @Override @SuppressWarnings("unchecked") public List findDocumentTypes() { return this.em.createQuery("SELECT dtype FROM DocumentType dtype ORDER BY dtype.name").getResultList(); } @Override public Document findById(int id) {return this.em.find(Document.class, id);} @Override public void save(Document document) { try { Session session = em.unwrap(Session.class); Blob blob = (Blob) Hibernate.getLobCreator(session).createBlob(document.getFile().getInputStream(), document.getFile().getSize()); document.setFileName(document.getFile().getOriginalFilename()); document.setContent(blob); document.setContentType(document.getFile().getContentType()); } catch (IOException e) {e.printStackTrace();} if (document.getId() == null) {this.em.persist(document);} else {this.em.merge(document);} } @Override public List list() throws DataAccessException { return this.em.createQuery("SELECT doc FROM Document doc ORDER BY doc.name").getResultList(); } @Override public void remove(Integer id) throws DataAccessException { Document thisdoc = em.find(Document.class, id); em.remove(thisdoc); } }
ClinicServiceImpl.java：
@Service public class ClinicServiceImpl implements ClinicService { private DocumentRepository documentRepository; private PatientRepository patientRepository; @Autowired public ClinicServiceImpl(DocumentRepository documentRepository, PatientRepository patientRepository) { this.documentRepository = documentRepository; this.patientRepository = patientRepository; } //Other methods @Override @Transactional public void saveDocument(Document doc) throws DataAccessException {documentRepository.save(doc);} }
这是堆栈跟踪：
ERROR ContextLoader - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0' defined in class path resource [spring/business-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring/business-config.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:741) ~[spring-context-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) ~[spring-context-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389) ~[spring-web-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294) ~[spring-web-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) [spring-web-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) [catalina.jar:7.0.42] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) [catalina.jar:7.0.42] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:7.0.42] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [catalina.jar:7.0.42] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [catalina.jar:7.0.42] at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_29] at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_29] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_29] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_29] at java.lang.Thread.run(Thread.java:662) [na:1.6.0_29] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring/business-config.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1512) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:438) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:277) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139) ~[spring-tx-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.(PersistenceExceptionTranslationInterceptor.java:79) ~[spring-tx-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.(PersistenceExceptionTranslationAdvisor.java:71) ~[spring-tx-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:85) ~[spring-tx-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1532) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1500) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] ... 20 common frames omitted Caused by: javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:923) ~[hibernate-entitymanager-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:898) ~[hibernate-entitymanager-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76) ~[hibernate-entitymanager-4.2.1.Final.jar:4.2.1.Final] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:288) ~[spring-orm-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310) ~[spring-orm-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1571) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509) ~[spring-beans-3.2.5.RELEASE.jar:3.2.5.RELEASE] ... 35 common frames omitted Caused by: org.hibernate.MappingException: Could not determine type for: org.springframework.web.multipart.MultipartFile, at table: documents, for columns: [org.hibernate.mapping.Column(file)] at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:314) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:292) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.mapping.Property.isValid(Property.java:239) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:469) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.mapping.RootClass.validate(RootClass.java:270) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.cfg.Configuration.validate(Configuration.java:1296) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1752) ~[hibernate-core-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.ejb.EntityManagerFactoryImpl.(EntityManagerFactoryImpl.java:96) ~[hibernate-entitymanager-4.2.1.Final.jar:4.2.1.Final] at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:913) ~[hibernate-entitymanager-4.2.1.Final.jar:4.2.1.Final] ... 41 common frames omitted Dec 13, 2013 8:38:54 PM org.apache.catalina.core.StandardContext listenerStart SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0' defined in class path resource [spring/business-config.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring/business-config.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:741) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring/business-config.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1512) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:438) at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:277) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:139) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.(PersistenceExceptionTranslationInterceptor.java:79) at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.(PersistenceExceptionTranslationAdvisor.java:71) at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:85) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1532) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1500) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521) ... 20 more Caused by: javax.persistence.PersistenceException: [PersistenceUnit: petclinic] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:923) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:898) at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:76) 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:1571) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1509) ... 35 more Caused by: org.hibernate.MappingException: Could not determine type for: org.springframework.web.multipart.MultipartFile, at table: documents, for columns: [org.hibernate.mapping.Column(file)] at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:314) at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:292) at org.hibernate.mapping.Property.isValid(Property.java:239) at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:469) at org.hibernate.mapping.RootClass.validate(RootClass.java:270) at org.hibernate.cfg.Configuration.validate(Configuration.java:1296) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1752) at org.hibernate.ejb.EntityManagerFactoryImpl.(EntityManagerFactoryImpl.java:96) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:913) ... more
在数据库中创建文档表的SQL。 与Document.java中的注释进行比较：
CREATE TABLE IF NOT EXISTS documents ( id int(11) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, client_id int(4) UNSIGNED NOT NULL, type_id INT(4) UNSIGNED, name varchar(200) NOT NULL, description text NOT NULL, filename varchar(200) NOT NULL, content mediumblob NOT NULL, content_type varchar(255) NOT NULL, created timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, FOREIGN KEY (client_id) REFERENCES patients(id), FOREIGN KEY (type_id) REFERENCES documenttypes(id) );
编辑：
当我将@Transient放在MultipartFile文件属性声明的前面时，我得到了可以在此文件共享链接下载的堆栈跟踪。
可以在此文件共享站点读取堆栈跟踪中引用的business-config.xml。
注释
@Transient private MultipartFile file;
更新
来自你的堆栈跟踪：
Caused by: org.hibernate.MappingException: Could not determine type for: org.springframework.web.multipart.MultipartFile, at table: documents, for columns: [org.hibernate.mapping.Column(file)]
错误是显式的，JPA不知道如何将MultipartFile映射为列。
使用@Transient我们说不要映射。
因此删除数据库并重新创建它，清理并重新编译代码 ，因为这些错误表明您的代码尚未使用@Transient编译。
并确保@Transient是@javax.persistence.Transient
使用@Entity注释类时，默认情况下，当您持久保存实体时，该类中的所有字段都将插入到数据库中。
除非您在每个字段上提供注释，否则您的持久性提供程序将采用“默认”方法使字段持久化（默认情况下，默认值可能由JPA规范引导，我不确定）。 对于类型是基元或其他易于映射的字段类型（如字符串和枚举）的字段，这不是问题。
如果字段的类型是对象或不容易映射，则会遇到问题。 本质上，您的持久性提供程序不知道您希望如何将字段存储到数据库中，并且无法采取合理的默认操作。 它要做的最好的事情就是抛出一个Exception来告诉你这一点，并让你更具体地说明如何在数据库中存储数据。
这就是您的MultipartFile字段所发生的情况。 Hibernate不知道你想如何在数据库中持久化它。
要解决此问题，您有以下几种选择：
1：您可以使用@Transient注释明确告知持久性提供程序忽略某些字段。 在您的情况下，您可以将其添加到Document实体中的file字段。 请注意，从数据库加载Document实体时， file字段将始终为null。 您需要确保您的业务逻辑正常。
2：在file字段上使用@Lob注释。 这将依赖于Java的内置序列化来将MulitpartFile存储在您的数据库中
3：提供一个Hibernate用户类型 ，它基本上指示Hibernate如何尝试持久化MultipartFile类型的任何字段
哪一个适合您，完全取决于您的应用程序的要求。