由: java.lang.IllegalArgumentException:属性'driverClassName‘引起的不能为空
由: java.lang.IllegalArgumentException:属性'driverClassName‘引起的不能为空
提问于 2020-06-09 09:02:15
在我在这里共享的代码中，Exception in thread "restartedMain" java.lang.reflect.InvocationTargetException Caused by: java.lang.NullPointerException我得到了新的错误。你能帮帮我吗。
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springLogging3Application': Unsatisfied dependency expressed through field 'factory'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'factory' defined in com.spring.main.SpringLogging3Application: Unsatisfied dependency expressed through method 'getSessionFactory' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'datasource' defined in com.spring.main.SpringLogging3Application: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Circular reference involving containing bean 'springLogging3Application' - consider declaring the factory method as static for independence from its containing instance. Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalArgumentException: Property 'driverClassName' must not be empty
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:598) ~[spring-beans-5.1.15.RELEASE.jar:5.1.15.RELEASE]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Circular reference involving containing bean 'springLogging3Application' - consider declaring the factory method as static for independence from its containing instance. Factory method 'dataSource' threw exception; nested exception is java.lang.IllegalArgumentException: Property 'driverClassName' must not be empty
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.1.15.RELEASE.jar:5.1.15.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622) ~[spring-beans-5.1.15.RELEASE.jar:5.1.15.RELEASE]
... 51 common frames omitted
Caused by: java.lang.IllegalArgumentException: Property 'driverClassName' must not be empty
at org.springframework.util.Assert.hasText(Assert.java:284) ~[spring-core-5.1.15.RELEASE.jar:5.1.15.RELEASE]application.properties
server.port=6565
db.driver:oracle.jdbc.driver.OracleDriver
db.url:jdbc:oracle:thin:@localhost:1521:xe
db.username:xxxx
db.password:xxxx
hibarenate.dialect:org.hibernate.dialect.OracleDialect
hibarenate.show_sql:true
hibarenate.hbm2ddl.auto:update
entitymanager.packagesToScan:com.spring.main更新的一份：
server.port=6565
db.driver=oracle.jdbc.driver.OracleDriver
db.url=jdbc:oracle:thin:@localhost:1521:xe
db.username=xxxx
db.password=xxxx
hibarenate.dialect=org.hibernate.dialect.OracleDialect
hibarenate.show_sql=true
hibarenate.hbm2ddl.auto=update
entitymanager.packagesToScan=com.spring.main回答 2
Stack Overflow用户
发布于 2020-06-09 10:09:22
尝试以下几点：
- 不混合"=“和":”分隔符在application.properties文件
- Log "db.driver“属性中，似乎是空的
致以问候。
Stack Overflow用户
发布于 2020-06-09 09:24:34
请共享并检查您的xyz-servlet.xml配置文件，其中您已经定义了spring、spring、information.after和hibernate information.after，因为我知道这是您在xml文件中的hibernate异常，请检查您是否定义了以下示例中的详细信息。
检查此数据库有四个属性driverClassName、url、用户名和密码。
<bean class="org.springframework.jdbc.datasource.DriverManagerDataSource" name="dataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>**check this property whether you have define or not if not then define it corresponding DB driver name as i have defined my driver details**
<property name="url" value="jdbc:mysql://localhost:3306/hibernatedb"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62278822
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