Spring boot应用程序找不到SQLite jdbc驱动程序类

Question

在我的Spring boot应用程序中，我指定了对sqlite jdbc驱动程序的依赖：

<dependency>
  <groupId>org.xerial</groupId>
  <artifactId>sqlite-jdbc</artifactId>
  <version>3.34.0</version>
</dependency>

在波姆。xml属性

<hibernate.version>5.1.0.Final</hibernate.version>

并在我的申请表中填写以下内容。属性：

spring.jpa.database-platform=com.springboot.sqlite.SQLDialect
spring.jpa.hibernate.ddl-auto=update
spring.jpa.defer-datasource-initialization = true

spring.datasource.url = jdbc:sqlite:cryptobot.db
spring.datasource.driver-class-name = org.sqlite.JDBC

我提供的SQLDialogue类是从本文复制而来的。但是运行应用程序失败了

组织。springframework。豆。工厂UnsatifiedDependencyException:创建名为“entityManagerFactory”的bean时出错，该bean在类路径资源[org/springframework/boot/autoconfigure/orm/jpa/hibernatejbaconfiguration.class]：通过方法“entityManagerFactory”参数0表示的未满足依赖关系；嵌套的异常是org。springframework。豆。工厂未满足的依赖异常：创建名为“entityManagerFactoryBuilder”的bean时出错，该bean在类路径资源[org/springframework/boot/autoconfigure/orm/jpa/hibernatejbaconfiguration.class]：通过方法“entityManagerFactoryBuilder”参数0表示未满足的依赖关系；嵌套的异常是org。springframework。豆。工厂BeanCreationException:创建名为“jpaVendorAdapter”的bean时出错，该bean在类路径资源[org/springframework/boot/autoconfigure/orm/jpa/hibernatejbaconfiguration.class]中定义：通过工厂方法实例化bean失败；嵌套的异常是org。springframework。豆。BeanInstationException:未能实例化[org.springframework.orm.jpa.JpaVendorAdapter]：工厂方法“JpaVendorAdapter”引发异常；嵌套的例外是java。lang.NoClassDefFoundError:org/hibernate/jpa/HibernatePersistenceProvider位于org。springframework。豆。工厂支持构造器解决方案。在org上创建ArgumentArray（ConstructorResolver.java:800）~[spring-beans-5.3.13.jar:5.3.13]。springframework。豆。工厂支持构造器解决方案。在org上实例化eusingFactoryMethod（ConstructorResolver.java:541）~[spring-beans-5.3.13.jar:5.3.13]。springframework。豆。工厂支持AbstractAutoWireAbleBeanFactory。InstanceUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1352）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持AbstractAutoWireAbleBeanFactory。createBeanInstance（AbstractAutowireCapableBeanFactory.java:1195）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持AbstractAutoWireAbleBeanFactory。doCreateBean（AbstractAutowireCapableBeanFactory.java:582）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持AbstractAutoWireAbleBeanFactory。createBean（AbstractAutowireCapableBeanFactory.java:542）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持抽象工厂。lambda$doGetBean$0（AbstractBeanFactory.java:335）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持DefaultSingletonBeanRegistry。getSingleton（DefaultSingletonBeanRegistry.java:234）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持抽象工厂。doGetBean（AbstractBeanFactory.java:333）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。豆。工厂支持抽象工厂。getBean（AbstractBeanFactory.java:208）~[spring-beans-5.3.13.jar:5.3.13]位于org。springframework。上下文支持AbstractApplicationContext。getBean（AbstractApplicationContext.java:1154）~[spring-context-5.3.13.jar:5.3.13]位于org。springframework。上下文支持AbstractApplicationContext。在org上完成BeanFactoryInitialization（AbstractApplicationContext.java:908）~[spring-context-5.3.13.jar:5.3.13]。springframework。上下文支持AbstractApplicationContext。在org上刷新（AbstractApplicationContext.java:583）~[spring-context-5.3.13.jar:5.3.13]。springframework。靴子Spring应用程序。在org上刷新（SpringApplication.java:730）~[spring-boot-2.6.1.jar:2.6.1]。springframework。靴子Spring应用程序。refreshContext（SpringApplication.java:412）~[spring-boot-2.6.1.jar:2.6.1]位于org。springframework。靴子Spring应用程序。在org上运行（SpringApplication.java:302）~[spring-boot-2.6.1.jar:2.6.1]。springframework。靴子Spring应用程序。在org上运行（SpringApplication.java:1301）~[spring-boot-2.6.1.jar:2.6.1]。springframework。靴子Spring应用程序。在com上运行（SpringApplication.java:1290）~[spring-boot-2.6.1.jar:2.6.1]。比南斯。机器人程序。BinanceBot应用程序。main（BinancebotApplication.java:10）~[classes/:na]

这里出了什么问题？

Answer 1

匿名用户

我试着在我的本地机器上复制这个，这里是解决方案。

你必须通过扩展组织来创建自己的dilect。冬眠地方话

package com.mehul.SQLiteDemo.dialect;

import java.sql.Types;

import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
import org.hibernate.type.StringType;

public class SQLDialect extends Dialect {
    public SQLDialect() {
        registerColumnType(Types.BIT, "integer");
        registerColumnType(Types.TINYINT, "tinyint");
        registerColumnType(Types.SMALLINT, "smallint");
        registerColumnType(Types.INTEGER, "integer");
        registerColumnType(Types.BIGINT, "bigint");
        registerColumnType(Types.FLOAT, "float");
        registerColumnType(Types.REAL, "real");
        registerColumnType(Types.DOUBLE, "double");
        registerColumnType(Types.NUMERIC, "numeric");
        registerColumnType(Types.DECIMAL, "decimal");
        registerColumnType(Types.CHAR, "char");
        registerColumnType(Types.VARCHAR, "varchar");
        registerColumnType(Types.LONGVARCHAR, "longvarchar");
        registerColumnType(Types.DATE, "date");
        registerColumnType(Types.TIME, "time");
        registerColumnType(Types.TIMESTAMP, "timestamp");
        registerColumnType(Types.BINARY, "blob");
        registerColumnType(Types.VARBINARY, "blob");
        registerColumnType(Types.LONGVARBINARY, "blob");
        // registerColumnType(Types.NULL, "null");
        registerColumnType(Types.BLOB, "blob");
        registerColumnType(Types.CLOB, "clob");
        registerColumnType(Types.BOOLEAN, "integer");

        registerFunction("concat", new VarArgsSQLFunction(StringType.INSTANCE, "", "||", ""));
        registerFunction("mod", new SQLFunctionTemplate(StringType.INSTANCE, "?1 % ?2"));
        registerFunction("substr", new StandardSQLFunction("substr", StringType.INSTANCE));
        registerFunction("substring", new StandardSQLFunction("substr", StringType.INSTANCE));
    }

    public boolean supportsIdentityColumns() {
        return true;
    }

    public boolean hasDataTypeInIdentityColumn() {
        return false; // As specify in NHibernate dialect
    }

    public String getIdentityColumnString() {
        // return "integer primary key autoincrement";
        return "integer";
    }

    public String getIdentitySelectString() {
        return "select last_insert_rowid()";
    }

    public boolean supportsLimit() {
        return true;
    }

    protected String getLimitString(String query, boolean hasOffset) {
        return new StringBuffer(query.length() + 20).append(query).append(hasOffset ? " limit ? offset ?" : " limit ?")
                .toString();
    }

    public boolean supportsTemporaryTables() {
        return true;
    }

    public String getCreateTemporaryTableString() {
        return "create temporary table if not exists";
    }

    public boolean dropTemporaryTableAfterUse() {
        return false;
    }

    public boolean supportsCurrentTimestampSelection() {
        return true;
    }

    public boolean isCurrentTimestampSelectStringCallable() {
        return false;
    }

    public String getCurrentTimestampSelectString() {
        return "select current_timestamp";
    }

    public boolean supportsUnionAll() {
        return true;
    }

    public boolean hasAlterTable() {
        return false; // As specify in NHibernate dialect
    }

    public boolean dropConstraints() {
        return false;
    }

    public String getAddColumnString() {
        return "add column";
    }

    public String getForUpdateString() {
        return "";
    }

    public boolean supportsOuterJoinForUpdate() {
        return false;
    }

    public String getDropForeignKeyString() {
        throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
    }

    public String getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable,
            String[] primaryKey, boolean referencesPrimaryKey) {
        throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
    }

    public String getAddPrimaryKeyConstraintString(String constraintName) {
        throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
    }

    public boolean supportsIfExistsBeforeTableName() {
        return true;
    }

    public boolean supportsCascadeDelete() {
        return false;
    }
}

还可以用包和类名更新spring.jpa.database-Platform=com.mehul.SQLiteDemo.dialect.SQLDialect。

注意：我使用了

Answer 2

由于Hibernate不附带SQLite的方言，因此您可以遵循以下路径：

import java.sql.Types;
import org.hibernate.dialect.Dialect;

public class SQLiteDialect extends Dialect {
 public SQLiteDialect() {
  super();
  registerColumnType(Types.BIT, "integer");
  registerColumnType(Types.TINYINT, "tinyint");
  registerColumnType(Types.SMALLINT, "smallint");
  registerColumnType(Types.INTEGER, "integer");
  registerColumnType(Types.BIGINT, "bigint");
  registerColumnType(Types.FLOAT, "float");
  registerColumnType(Types.REAL, "real");
  registerColumnType(Types.DOUBLE, "double");
  registerColumnType(Types.NUMERIC, "numeric");
  registerColumnType(Types.DECIMAL, "decimal");
  registerColumnType(Types.CHAR, "char");
  registerColumnType(Types.VARCHAR, "varchar");
  .
  .
  .
 }
}

单击查看完整示例。

对于Hibernate 5，添加依赖项：

    <dependency>
        <groupId>com.github.gwenn</groupId>
        <artifactId>sqlite-dialect</artifactId>
        <version>0.1.2</version>
    </dependency>

和配置：

hibernate.dialect=org.sqlite.hibernate.dialect.SQLiteDialect

Answer 3

这个主要问题是，通过pom中的以下html" target="_blank">配置，您被显式配置为使用Hibernate 5.1.0。xml

<hibernate.version>5.1.0.Final</hibernate.version>

它太旧了（6年前发布），spring boot 2.6.1已经很长时间不支持它了。

从技术上讲，Spring引导2.6基于Spring5.3，Spring5.3是针对Hibernate 5.3开发和测试的，并在运行时尽最大努力与Hibernate 5.2向后兼容。您可以在HibernateJpaVendorAdapter和此问题的javadoc中找到此类信息。

它试图加载组织。冬眠jpa。HibernatePersistenceProvider在某些时候，但是这个类只在Hibernate 5.2之后存在。由于您现在正在使用Hibernate 5.1，因此它抱怨无法加载它，并出现以下错误：

[org.springframework.orm.jpa.JpaVendorAdapter]：工厂方法“JpaVendorAdapter”引发异常；嵌套的例外是java。lang.NoClassDefFoundError:org/hibernate/jpa/HibernatePersistenceProvider

因此，只需删除上面的