Java 休眠程序错误

我使用EclipseEE遵循本教程：。这是我得到的错误。还有一件事是，我在任何一个hibernate发行版中都找不到所有提到的jar文件，所以我有来自

openlogic-hibernate-3.3.1.GA-all-bin-1

&

lib/jpa

的所有jar文件，而

hibernate-release-4.0.0.CR5

bec它没有包含在3.3.1中。 我用MySql制作了表格

编辑 下面是我正在使用的Jar文件列表：

lib\mysql-connector-java-5.1.18-bin.jar
lib\slf4j-simple-1.6.4.jar
lib\antlr-2.7.6.jar
lib\commons-collections-3.1.jar
lib\dom4j-1.6.1.jar
lib\hibernate3.jar
lib\hibernate-cglib-repack-2.1_3.jar
lib\hibernate-entitymanager-4.0.0.CR5.jar
lib\javassist-3.4.GA.jar
lib\jta-1.1.jar
lib\slf4j-api-1.5.2.jar

以下是错误：

Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.hib.HibernateUtil.buildSessionFactory(HibernateUtil.java:16)
    at com.hib.HibernateUtil.<clinit>(HibernateUtil.java:7)
    at com.hib.Test.addUser(Test.java:61)
    at com.hib.Test.main(Test.java:20)
Caused by: java.lang.IllegalAccessError: tried to access field org.slf4j.impl.StaticLoggerBinder.SINGLETON from class org.slf4j.LoggerFactory
    at org.slf4j.LoggerFactory.<clinit>(LoggerFactory.java:60)
    at org.hibernate.cfg.Configuration.<clinit>(Configuration.java:151)
    at com.hib.HibernateUtil.buildSessionFactory(HibernateUtil.java:11)
    ... 3 more 

hibernate.cfg.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
 "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
 <session-factory>
  <!-- Database connection settings -->
  <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
  <property name="connection.url">jdbc:mysql://localhost/userdata</property>
  <property name="connection.username">root</property>
  <property name="connection.password"></property>

  <!-- JDBC connection pool (use the built-in) -->
  <property name="connection.pool_size">1</property>

  <!-- SQL dialect -->
  <property name="dialect">org.hibernate.dialect.MySQLDialect</property>

  <!-- Enable Hibernate's automatic session context management -->
  <property name="current_session_context_class">thread</property>

  <!-- Disable the second-level cache -->
  <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

  <!-- Echo all executed SQL to stdout -->
  <property name="show_sql">true</property>

  <!-- Drop and re-create the database schema on startup -->
  <property name="hbm2ddl.auto">update</property>

  <!-- Mapping files -->
  <mapping resource="user.hbm.xml"/>
  <mapping resource="task.hbm.xml"/>

 </session-factory>
</hibernate-configuration>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
 <class name="com.hib.Task" table="tasks">
  <id name="id" type="int" column="id" >
   <generator class="native"/>
  </id>

  <property name="userID">
   <column name="user_id" />
  </property> 
  <property name="title">
   <column name="title" />
  </property>
  <property name="description">
   <column name="description"/>
  </property>
 </class>
</hibernate-mapping>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
 <class name="com.hib.User" table="users" >
  <id name="id" type="int" column="id" >
   <generator class="native"/>
  </id>

  <property name="firstName">
   <column name="first_name" />
  </property>
  <property name="lastName">
   <column name="last_name"/>
  </property>
 </class>
</hibernate-mapping>

用户类

package com.hib;

public class Task {

 private Integer id;
 private Integer userID;
 private String title;
 private String description;

 public Integer getId() {
  return id;
 }
 public void setId(Integer id) {
  this.id = id;
 }
 public Integer getUserID() {
  return userID;
 }
 public void setUserID(Integer userID) {
  this.userID = userID;
 }
 public String getTitle() {
  return title;
 }
 public void setTitle(String title) {
  this.title = title;
 }
 public String getDescription() {
  return description;
 }
 public void setDescription(String description) {
  this.description = description;
 }
}

package com.hib;

public class User {
 private Integer id;
 private String firstName;
 private String lastName;

 public Integer getId() {
  return id;
 }
 public void setId(Integer id) {
  this.id = id;
 }
 public String getFirstName() {
  return firstName;
 }
 public void setFirstName(String firstName) {
  this.firstName = firstName;
 }
 public String getLastName() {
  return lastName;
 }
 public void setLastName(String lastName) {
  this.lastName = lastName;
 }
}

---

您遇到的运行时异常是由（Hibernate使用的日志框架）引起的。确保您提供了与类路径中编译Hibernate时使用的slf4j API相匹配的正确实现，例如，对于Hibernate 3.3.1（根据），正确的版本是（根据您的环境选择目标日志机制，例如simple/log4j/jdk14）。

这不是编译时错误，而是运行时错误。您缺少slf4j-log4j12.jar绑定或其他绑定，具体取决于您想要使用的底层日志框架

---

您可以从

下载它，尝试将

hibernate jpa xxx.jar

添加到您的类路径中。

---

还要验证数据库连接配置。

什么时候出现错误？你什么时候运行哪个代码？不要让我们通读整个教程！：）我编译代码时会出错。我有两个mysql表&主文件从中输入和检索值。编译时会出现这些错误吗？！我想你们很容易模仿教程页面上的代码，因为这只是一个典型的heloworld程序，但如果我把所有文件都放在这里，会占用很多空间。我编辑了OP并放置了所有源代码。我列出了我在OP中使用的JAR。正如我在OP中提到的，我添加了3.3.1中的所有JAR，只有4.0.0中的lib/jpa。它也有一些问题吗？您有不同版本的slf4j和slf4j simple-这可能是一个问题，API可能有changed@Igor尼古拉耶夫：对，jar是slf4j-simple-1.6.4.jar和slf4j-api-1.5.2.jar。如果两者都是1.6.4或1.5.2，则情况相同？？您需要将slf4j jar升级到版本1.6.4，因为版本1.5.2尝试获取slf4j版本1.6.4中缺少的字段StaticLoggerBinder.INSTANCE-simple@enterprize：同时使用1.6.4应该可以。否则（运气不好）你就不能使用JPA从4.0.0版开始——你还必须将Hibernate core升级到4.0.0版。但本教程只提到了slf4j api和slf4j简单JAR。当我第一次写答案时，你没有JAR列表。slf4j simple和slf4j-log4j12只是不同的底层日志框架。您只能使用其中一个，否则slf4j将发出错误，因为它不知道使用哪一个

package com.hib;

public class Task {

 private Integer id;
 private Integer userID;
 private String title;
 private String description;

 public Integer getId() {
  return id;
 }
 public void setId(Integer id) {
  this.id = id;
 }
 public Integer getUserID() {
  return userID;
 }
 public void setUserID(Integer userID) {
  this.userID = userID;
 }
 public String getTitle() {
  return title;
 }
 public void setTitle(String title) {
  this.title = title;
 }
 public String getDescription() {
  return description;
 }
 public void setDescription(String description) {
  this.description = description;
 }
}

package com.hib;

public class User {
 private Integer id;
 private String firstName;
 private String lastName;

 public Integer getId() {
  return id;
 }
 public void setId(Integer id) {
  this.id = id;
 }
 public String getFirstName() {
  return firstName;
 }
 public void setFirstName(String firstName) {
  this.firstName = firstName;
 }
 public String getLastName() {
  return lastName;
 }
 public void setLastName(String lastName) {
  this.lastName = lastName;
 }
}