Tomcat异常：处理程序处理失败;嵌套异常是java.lang.NoClassDefFoundError：无法初始化类ru.haki.utils.HibernateSessionFactory
的pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>Haki</groupId>
<artifactId>CRUD</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>CRUD Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<hibernate-version>5.1.0.Final</hibernate-version>
<spring-version>4.2.6.RELEASE</spring-version>
</properties>
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>3.2.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-osgi</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-envers</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-proxool</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-infinispan</artifactId>
<version>${hibernate-version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>${hibernate-version}</version>
</dependency>
<!--driver for connection to MySQL-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>CRUD</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>
hibernate.cfg.xml中
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<!--<property name="hibernate.current_session_context_class">thread</property>-->
<mapping class="ru.haki.domain.User"/>
<!-- DB schema will be updated if needed -->
<!-- <property name="hbm2ddl.auto">update</property> -->
</session-factory>
</hibernate-configuration>
HibernateSessionFactory
package ru.haki.utils;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
public class HibernateSessionFactory {
private static SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
final StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
.configure() // configures settings from hibernate.cfg.xml
.build();
try {
sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();
}
catch (Exception e) {
// The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory
// so destroy it manually.
StandardServiceRegistryBuilder.destroy(registry);
}
return sessionFactory;
}
public static Session getSession() {
return sessionFactory.openSession();
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static void closeSession(Session session) {
if (session != null) {
session.flush();
session.close();
}
}
}
用户
package ru.haki.domain;
//import org.hibernate.annotations.CreationTimestamp;
import javax.persistence.*;
import java.util.Date;
@Entity
@Table(name = "user", schema = "", catalog = "test")
public class User {
private int id;
private String name;
private Integer age;
private boolean isAdmin;
private Date createdDate;
public User() {
this.createdDate = new Date();
}
public User(String name, Integer age, boolean isAdmin) {
this.name = name;
this.age = age;
this.isAdmin = isAdmin;
this.createdDate = new Date();
}
@Id
@Column(name = "id", nullable = false, insertable = true, updatable = true)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Basic
@Column(name = "name", nullable = false, insertable = true, updatable = true, length = 25)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Basic
@Column(name = "age", nullable = true, insertable = true, updatable = true)
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Basic
@Column(name = "isAdmin", nullable = false, insertable = true, updatable = true)
public boolean isAdmin() {
return isAdmin;
}
public void setAdmin(boolean admin) {
isAdmin = admin;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "createdDate", nullable = false)
public java.util.Date getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Date createdDate) {
this.createdDate = createdDate;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
User user = (User) o;
if (id != user.id) return false;
if (isAdmin != user.isAdmin) return false;
if (name != null ? !name.equals(user.name) : user.name != null) return false;
if (age != null ? !age.equals(user.age) : user.age != null) return false;
if (createdDate != null ? !createdDate.equals(user.createdDate) : user.createdDate != null) return false;
return true;
}
@Override
public int hashCode() {
int result = id;
result = 31 * result + (name != null ? name.hashCode() : 0);
result = 31 * result + (age != null ? age.hashCode() : 0);
result = 31 * result + (isAdmin ? 1 : 0);
result = 31 * result + (createdDate != null ? createdDate.hashCode() : 0);
return result;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", age=" + age +
", isAdmin=" + isAdmin +
", createdDate=" + createdDate +
'}';
}
}
答案 0 :(得分：0)
你需要在tomcat库中包含hibernate jar。 NoClassDefFoundError 主要发生在jar丢失时。
答案 1 :(得分：0)
通过删除Hibernate Annotations依赖关系解决，因为它们包含在核心中。