休眠异常无法加载类“org.slf4j.impl.StaticLoggerBinder”

Posted 2023-03-29

【中文标题】休眠异常无法加载类“org.slf4j.impl.StaticLoggerBinder”

【英文标题】：Hibernate Exception Failed to load class "org.slf4j.impl.StaticLoggerBinder"

【发布时间】：2021-07-24 07:53:48

【问题描述】：

我想在我的 oracle 数据库中执行更新查询。但我收到以下错误：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.dom4j.io.SAXContentHandler (file:/C:/hibernate/lib/required/dom4j-1.6.1.jar) to method com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser$LocatorProxy.getEncoding()
WARNING: Please consider reporting this to the maintainers of org.dom4j.io.SAXContentHandler
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Hibernate: update ëmp1 set ename=?, esal=?, eaddr=? where eno=?
Employee updation failure
org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:268)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:185)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
    at com.durgasoft.test.Test.main(Test.java:33)
Caused by: java.sql.BatchUpdateException: ORA-00942: table or view does not exist

    at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10296)
    at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:216)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
    ... 8 more

项目中的文件：

Pojo 类代码 Employee.java

package com.MyApp.pojo;

public class Employee 
    private int eno;
    private String ename;
    private float esal;
    private String eaddr;
    
    
    // getter and setters

主要方法 Test.java

package com.durgasoft.test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import com.MyApp.pojo.Employee;

public class Test 

    public static void main(String[] args) 
        
        Configuration config=null;
        SessionFactory sessionFactory=null;
        Session session=null;
        Transaction tx=null;
        
        try 
        
            config = new Configuration();
            config.configure();
            sessionFactory=config.buildSessionFactory();
            session=sessionFactory.openSession();
            tx=session.getTransaction();
            tx.begin();
            Employee emp=new Employee();
            emp.setEno(111);
            emp.setEname("XXX");
            emp.setEsal(1000);
            emp.setEaddr("ABCD");
            session.update(emp);
            tx.commit();
            System.out.println("Employee Updated Successfully");
            
            
        
        catch(Exception e)
        
            tx.rollback();
            System.out.println("Employee updation failure");
            e.printStackTrace();
            
        
        finally 
        
            
            session.close();
            sessionFactory.close();
        

    

休眠配置文件 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>
            <property name="org.hibernate.driver_Class">oracle.jdbc.OracleDriver</property>
            <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
            <property name="hibernate.connection.username">username</property>
            <property name="hibernate.connection.password">password</property>
            <property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
            <property name="hibernate.show_sql">true</property>
            <mapping resource="Employee.hbm.xml"/>
            
        
        </session-factory>
    
    </hibernate-configuration>

休眠映射文件 Employee.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
    
    <hibernate-mapping>
    <class name="com.durgasoft.pojo.Employee" table="ëmp1">
    <id name="eno"/>
    <property name="ename"/>
    <property name="esal"/>
    <property name="eaddr"/>
    
    </class>
    
    </hibernate-mapping>

【参考方案1】：

不确定您是否已在数据库中创建表。试试这两个选项：

在 DB 中添加表 emp1 并重新运行您的应用程序。 在您的休眠配置文件中添加以下配置。

<property name="hbm2ddl.auto">update</property>

您可以参考此链接了解您可以使用的各种值。

https://***.com/a/23678638/8148637

编辑：

您正在使用session.update(emp) 更新一个空表。改为使用：

session.saveOrUpdate(emp)

【讨论】：

``` SLF4J：无法加载类“org.slf4j.impl.StaticLoggerBinder”。 SLF4J：默认为无操作 (NOP) 记录器实现 SLF4J：有关详细信息，请参阅 slf4j.org/codes.html#StaticLoggerBinder。警告：发生了非法反射访问操作 警告：org.dom4j.io.SAXContentHandler（文件：/C:/hibernate/lib/required/dom4j-1.6.1.jar）对方法 com.sun.org 的非法反射访问.apache.xerces.internal.parsers.AbstractSAXParser$LocatorProxy.getEncoding() 警告：请考虑将此报告给 org.dom4j.io.SAXContentHandler 的维护者 ```

警告：使用 --illegal-access=warn 启用对进一步非法反射访问操作的警告警告：所有非法访问操作将在未来版本中被拒绝 Hibernate：更新 emp set ename=?, esal =?, eaddr=?埃诺=？员工更新成功。但桌子是空的。

你做了什么改变，它现在正在更新表格。表名改了吗？

是的，更改表名后，它开始显示此消息。

您的表中没有记录。您可以使用 session.save 插入新记录，使用 session.update 更新该记录。在这里，您的表已经是空的，并且您正在使用更新。尝试在您的情况下使用 session.saveOrUpdate(emp) 。如果它不存在，它将插入员工。如果存在，则更新它。