java - Spring + hibernate +Maven : jCannot create JDBC driver of class 'com.mysql.jdbc.Driver' for connect URL 'jdbc:mysql//localhost:3306/test'

Question

我的 mysql-connector jar 位于:

1.) Tomcat 服务器库

2.) 将路径构建为外部 JAR。 * 从 Maven 依赖项中删除，但仍然存在相同的错误。

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.dialect=org.hibernate.dialect.MySQLDialect
jdbc.databaseurl=jdbc:mysql//localhost:3306/test
jdbc.username=root
jdbc.password=****

web.xml 添加片段:

<resource-ref>
    <description>DB Connection</description>
    <res-ref-name>jdbc/test</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>

还有我完整的servlet-context.xml

<context:annotation-config />
<context:component-scan base-package="org.springsecudev.controller" />
<context:component-scan base-package="org.springsecudev.model" />
<context:component-scan base-package="org.springsecudev.service" />
<context:component-scan base-package="org.springsecudev.dao" />

<beans:bean id="propertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
    p:location="/WEB-INF/jdbc.properties">
</beans:bean>

<beans:bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
    destroy-method="close" p:driverClassName="${jdbc.driverClassName}"
    p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}">
</beans:bean>

<beans:bean id="sessionFactory" 
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <beans:property name="dataSource" ref="dataSource"/>
    <beans:property name="configLocation">
        <beans:value>classpath:hibernate.cfg.xml</beans:value>
    </beans:property>
    <beans:property name="configurationClass">
        <beans:value>org.hibernate.cfg.AnnotationConfiguration</beans:value>
    </beans:property>
    <beans:property name="hibernateProperties">
        <beans:props>
            <beans:prop key="hibernate.dialect">${jdbc.dialect}</beans:prop>
            <beans:prop key="hibernate.show_sql">true</beans:prop>
        </beans:props>
    </beans:property>
</beans:bean>   

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />

<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>

<beans:bean id="transactionManager" 
    class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <beans:property name="sessionFactory" ref="sessionFactory"></beans:property>
</beans:bean>

<interceptors>
    <beans:bean id="webContentInterceptor" 
        class="org.springframework.web.servlet.mvc.WebContentInterceptor">
        <beans:property name="cacheSeconds" value="0"/>
        <beans:property name="useExpiresHeader" value="true"/>
        <beans:property name="useCacheControlHeader" value="true"/>
        <beans:property name="useCacheControlNoStore" value="true"/>
    </beans:bean>
</interceptors>

<beans:bean id="encoder"  
class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder">
    <beans:constructor-arg value="12"></beans:constructor-arg>
</beans:bean>

我还在 META-INF 中添加了 context.xml 以确保我也尝试过这个

<Context>
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Resource  name="jdbc/test" 
        username="root" 
        password="root" 
        driverClassName="com.mysql.jdbc.Driver"
        url="jdbc:mysql://localhost:3306/test"
        auth="Container" 
        type="javax.sql.DataSource"
        maxActive="100" 
        maxIdle="30" 
        maxWait="10000"
        initialSize="1"/>

但仍然没有运气，它也有同样的错误:

INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@39c45c72: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,propertyConfigurer,dataSource,sessionFactory,org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.view.InternalResourceViewResolver#0,transactionManager,org.springframework.web.servlet.handler.MappedInterceptor#0,encoder,org.springframework.context.annotation.ConfigurationClassPostProcessor$ImportAwareBeanPostProcessor#0]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@31e0a986 WARN : org.hibernate.util.JDBCExceptionReporter - SQL Error: 0, SQLState: null ERROR: org.hibernate.util.JDBCExceptionReporter - Cannot create JDBC driver of class 'com.mysql.jdbc.Driver' for connect URL 'jdbc:mysql//localhost:3306/test' WARN : org.hibernate.cfg.SettingsFactory - Could not obtain connection metadata java.sql.SQLException: Cannot create JDBC driver of class 'com.mysql.jdbc.Driver' for connect URL 'jdbc:mysql//localhost:3306/test' at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2160)....... [ shortened ] Caused by: java.sql.SQLException: No suitable driver at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2151) ... 40 more

我一直在尝试找出可能出现的问题，其中我已将 jar 复制到构建路径和服务器库中。

Answer 1

似乎您在文件 jdbc.properties 中缺少数据库 URL 的冒号。

jdbc:mysql//localhost:3306/test

我觉得应该是

jdbc:mysql://localhost:3306/test