关于网友提出的“ hibernate junit时的问题”问题疑问，本网通过在网上对“ hibernate junit时的问题”有关的相关答案进行了整理，供用户进行参考，详细问题解答如下：
问题： hibernate junit时的问题
描述: 错误信息如下
java.lang.ExceptionInInitializerError
at service.UserManager.exists(UserManager.java:8)
at service.UserManagerTest.testExists(UserManagerTest.java:17)
/>
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
/>
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
/>
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)<>
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.hibernate.HibernateException: could not instantiate RegionFactory [org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge]
at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:389)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:262)<>
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2119)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2115)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1339)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
at util.HibernateUtil.(HibernateUtil.java:9)
... 26 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.hibernate.cfg.SettingsFactory.createRegionFactory(SettingsFactory.java:384)
... 32 more
Caused by: org.hibernate.cache.CacheException: could not instantiate CacheProvider [org.hibernate.cache.internal.NoCacheProvider]
at org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge.(RegionFactoryCacheProviderBridge.java:66)
... 37 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.cache.internal.NoCacheProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)<>
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:192)
at org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge.(RegionFactoryCacheProviderBridge.java:63)
... 37 more
————————————————————————————————————————————————hibernate配置文件如下
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
com.mysql.jdbc.Driver
jdbc:mysql://localhost/test
root
root
org.hibernate.dialect.MySQLDialect
1
thread
org.hibernate.cache.internal.NoCacheProvider
true
true
------------------------------------------------------------------------
model层
package model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class User {
private int id;
private String username;
private String password;
@Id
@GeneratedValue
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;
}
}
------------------------------------------------
service层
package service;
import model.User;
import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;<>
import util.HibernateUtil;
public class UserManager {
public boolean exists(User u) throws Exception {
SessionFactory sf = HibernateUtil.getSessionFactory();<>
Session s = sf.getCurrentSession();
s.beginTransaction();
long count = (Long)s.createQuery("select count(*) from User u where u.username = :username")
.setString("username", u.getUsername())
.uniqueResult();
s.getTransaction().commit();
if(count > 0) return true;
return false;
}
public void add(User u) throws Exception {
SessionFactory sf = HibernateUtil.getSessionFactory();
Session s = sf.getCurrentSession();
s.beginTransaction();
s.save(u);
s.getTransaction().commit();
}
}
------------------------------
util层
package util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
public class HibernateUtil {
private static SessionFactory sf;
static {
sf = new AnnotationConfiguration().configure().buildSessionFactory();
}
public static SessionFactory getSessionFactory() {
return sf;
}
}
---------------------------------
junit 类
package service;
import org.junit.Assert;
import model.User;
import org.junit.Test;
public class UserManagerTest {
@Test
public void testExists() throws Exception {
UserManager um = new UserManager();
User u = new User();
System.out.print("gfgf");
u.setUsername("a");
boolean exists = um.exists(u);
System.out.print(exists);
Assert.assertEquals(true, exists);
}
@Test
public void testAdd() throws Exception {
UserManager um = new UserManager();
User u = new User();
u.setUsername("b");
boolean exists = um.exists(u);
if(!exists){
um.add(u);
u.setUsername("b");
Assert.assertEquals(true,um.exists(u));
}else{
Assert.fail("not added");
}
}
}
------------------
导入的包
antlr-2.7.6.jar
commons-collections-3.1.jar
dom4j-1.6.1.jar
ejb3-persistence.jar
hibernate-annotations.jar
hibernate-commons-annotations.jar
hibernate3.jar
javassist-3.9.0.GA.jar
jta-1.1.jar
log4j-1.2.15.jar
mysql-connector-java-3.1.13-bin.jar
slf4j-api-1.5.8.jar
slf4j-log4j12-1.5.8.jar
哪里有错！
解决方案1: 去掉这句配置org.hibernate.cache.internal.NoCacheProvider
解决方案2: 你用了缓存，却没有jar包，找下jar包吧。或者干掉下面的配置。
org.hibernate.cache.internal.NoCacheProvider
Caused by: java.lang.ClassNotFoundException: org.hibernate.cache.internal.NoCacheProvider
以上介绍了“ hibernate junit时的问题”的问题解答，希望对有需要的网友有所帮助。
本文网址链接：http://www.codes51.com/itwd/2098054.html
