Hibernate java.lang.NoClassDefFoundError：org/hibernate/util/DTDEntityResolver

Question

我對休眠非常陌生， ，我只是想讓我的第一個程序使用它。

我正在使用maven構建項目。我聲明這些依賴關係：

<dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-core</artifactId> 
    <version>4.1.5.SP1</version> 
    </dependency> 

    <dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-entitymanager</artifactId> 
    <version>4.1.5.SP1</version> 
    </dependency> 

    <dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-tools</artifactId> 
    <version>3.2.4.GA</version> 
    </dependency> 

然後，我創建了Hibernate配置文件：

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
             "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
<session-factory name=""> 
    <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
    <property name="hibernate.connection.password">******</property> 
    <property name="hibernate.connection.url">jdbc:mysql://localhost/vcsdb</property> 
    <property name="hibernate.connection.username">vcsuser</property> 
    <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> 
    <mapping class="org.test.database.Project"/> 
</session-factory 
</hibernate-configuration> 

然後我創建了一個反向ENGINERING文件：

<?xml version="1.0" encoding="UTF-8"?> 

使用Eclipse休眠插件，我創建了代表存在於數據庫中的唯一的表的實體：

package org.test.database; 

// Generated Jul 28, 2012 4:34:03 PM by Hibernate Tools 3.4.0.CR1 

import java.util.Date; 
import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import static javax.persistence.GenerationType.IDENTITY; 
import javax.persistence.Id; 
import javax.persistence.Table; 
import javax.persistence.Temporal; 
import javax.persistence.TemporalType; 

/** 
* Project generated by hbm2java 
*/ 
@Entity 
@Table(name = "project", catalog = "versioncontroldb") 
public class Project implements java.io.Serializable { 

    private Integer id; 
    private String name; 
    private String longName; 
    private String siteUrl; 
    private String projectUrl; 
    private Date registered; 
    private String description; 
    private String userId; 

    public Project() { 
    } 

    public Project(String name, String projectUrl, Date registered) { 
     this.name = name; 
     this.projectUrl = projectUrl; 
     this.registered = registered; 
    } 

    public Project(String name, String longName, String siteUrl, 
      String projectUrl, Date registered, String description, 
      String userId) { 
     this.name = name; 
     this.longName = longName; 
     this.siteUrl = siteUrl; 
     this.projectUrl = projectUrl; 
     this.registered = registered; 
     this.description = description; 
     this.userId = userId; 
    } 

    @Id 
    @GeneratedValue(strategy = IDENTITY) 
    @Column(name = "id", unique = true, nullable = false) 
    public Integer getId() { 
     return this.id; 
    } 

    public void setId(Integer id) { 
     this.id = id; 
    } 

    @Column(name = "name", nullable = false, length = 30) 
    public String getName() { 
     return this.name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    @Column(name = "long_name", length = 65535) 
    public String getLongName() { 
     return this.longName; 
    } 

    public void setLongName(String longName) { 
     this.longName = longName; 
    } 

    @Column(name = "site_url", length = 150) 
    public String getSiteUrl() { 
     return this.siteUrl; 
    } 

    public void setSiteUrl(String siteUrl) { 
     this.siteUrl = siteUrl; 
    } 

    @Column(name = "project_url", nullable = false, length = 200) 
    public String getProjectUrl() { 
     return this.projectUrl; 
    } 

    public void setProjectUrl(String projectUrl) { 
     this.projectUrl = projectUrl; 
    } 

    @Temporal(TemporalType.DATE) 
    @Column(name = "registered", nullable = false, length = 10) 
    public Date getRegistered() { 
     return this.registered; 
    } 

    public void setRegistered(Date registered) { 
     this.registered = registered; 
    } 

    @Column(name = "description", length = 65535) 
    public String getDescription() { 
     return this.description; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 

    @Column(name = "user_id", length = 25) 
    public String getUserId() { 
     return this.userId; 
    } 

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

} 

最後我加入到主要的servlet類裏面爲應用程序的代碼的follwing行：

Configuration sessionFactory = (Configuration) new Configuration() 
    .configure() // configures settings from hibernate.cfg.xml 
    .buildSessionFactory(); 

但是，當我嘗試推出我收到以下錯誤消息的應用程序：

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: org/hibernate/util/DTDEntityResolver 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:839) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) 
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 

和：

java.lang.NoClassDefFoundError: org/hibernate/util/DTDEntityResolver 
java.lang.ClassLoader.defineClass1(Native Method) 
java.lang.ClassLoader.defineClass(ClassLoader.java:791) 
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2901) 
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678) 
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) 
org.hibernate.cfg.Configuration.reset(Configuration.java:326) 
org.hibernate.cfg.Configuration.<init>(Configuration.java:265) 
org.hibernate.cfg.Configuration.<init>(Configuration.java:269) 
org.versioncontrolanalyzer.controllers.MainController.helloWorld(MainController.java:18) 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
java.lang.reflect.Method.invoke(Method.java:601) 
org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426) 
org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414) 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 

任何想法？

Answer 1

好的，我自己找到了解決方案。

有幾個錯誤。在POM杉杉我刪除此依賴：

<dependency> 
<groupId>org.hibernate</groupId> 
<artifactId>hibernate-tools</artifactId> 
<version>3.2.4.GA</version> 

然後我接到另一個錯誤：找不到hibernate.cfg.xml中，我環顧四周，我發現，此配置文件必須放在根目錄的java源代碼（所以當應用程序部署時它將放置到classes文件夾中）。

終於我有另一個。我將它聲明爲Configuration變量，但它必須是SessionFactory變量。

最後還有映射的另一個問題（Project類的錯誤包）。

如果你跟隨[Maven的標準目錄佈局（http://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout好像作品:)