Spring 启动应用程序无法找到 SQLite jdbc 驱动程序 class

Question

在我的 Spring 启动应用程序中，我指定了 sqlite jdbc 驱动程序的依赖项：

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

并在 pom.xml 属性中

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

并在我的 application.properties 中包含以下内容：

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 SQLDialect class 是从 this article 复制而来的。但是运行申请失败

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Unsatisfied dependency expressed through method 'entityManagerFactory' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'entityManagerFactoryBuilder' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Unsatisfied dependency expressed through method 'entityManagerFactoryBuilder' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaVendorAdapter' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.JpaVendorAdapter]: Factory method 'jpaVendorAdapter' threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/jpa/HibernatePersistenceProvider at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=16=](AbstractBeanFactory.java:335) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.13.jar:5.3.13] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.13.jar:5.3.13] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.13.jar:5.3.13] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.13.jar:5.3.13] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-2.6.1.jar:2.6.1] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) ~[spring-boot-2.6.1.jar:2.6.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) ~[spring-boot-2.6.1.jar:2.6.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.1.jar:2.6.1] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.1.jar:2.6.1] at com.binance.bot.BinancebotApplication.main(BinancebotApplication.java:10) ~[classes/:na]

这里出了什么问题？

Answer 1

我试着在我的本地机器上复制这个，这里是解决方案。

您必须通过扩展 org.hibernate.dialect

来创建您自己的方言

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;
    }
}

同时使用您的包和类名更新 spring.jpa.database-platform=com.mehul.SQLiteDemo.dialect.SQLDialect。

注 : 我用了<hibernate.version>5.6.3.Final</hibernate.version>

Answer 2

由于 Hibernate 没有附带 SQLite 方言，您可以按照以下路径操作：

1。通过扩展 Dialect.

创建您自己的方言 class

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");
  .
  .
  .
 }
}

Click 完整示例。

2。您可以使用第三方方言。

对于 Hibernate 5 添加 dependency:

    <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

这个主要问题是您在 pom.xml

中通过以下配置明确配置为使用 Hibernate 5.1.0

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

太旧了（6年前发布的）而且spring-boot 2.6.1已经很久不支持了

从技术上讲，spring-boot 2.6 基于 spring 5.3 并且 spring 5.3 是针对 Hibernate 5.3+ 开发和测试的，并尝试向后兼容 Hibernate 5.2在运行时尽最大努力。您可以在 HibernateJpaVendorAdapter and this issue 的 javadoc 中找到此类信息。

它试图在某个时候加载 org.hibernate.jpa.HibernatePersistenceProvider，但是这个 class 仅在 Hibernate 5.2 之后才存在。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]: Factory method 'jpaVendorAdapter' threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/jpa/HibernatePersistenceProvider

所以只需删除pom.xml中的上述<hibernate.version>，这样它将使用spring-boot 2.6.1定义的hibernate 5.6.1，然后您的问题应该得到解决.为新项目使用非常旧的 Hibernate 版本没有意义。

Spring 启动应用程序无法找到 SQLite jdbc 驱动程序 class

Spring boot applicaiton unable to find SQLite jdbc driver class

sqlite

hibernate

spring-boot

1。通过扩展 Dialect.

2。您可以使用第三方方言。