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java.sql.SQLException：訪問數據庫時沒有合適的驅動程序

2012-07-01 69 views
3

我創建了一個運行在Tomcat 7上的基本Spring 3.1 - Hibernate 4 - Mysql 5.5 web應用程序。 我通過spring + C3PO池連接。java.sql.SQLException：訪問數據庫時沒有合適的驅動程序

更新：我發佈我的代碼以及。

我的Spring應用程序上下文：

<!-- Context --> 
<context:component-scan base-package="com.yl.tomcat" /> 

<!-- AOP --> 
<aop:aspectj-autoproxy /> 

<!-- Properties --> 
<bean id="applicationProperties" 
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
    <property name="location" value="classpath:applicationProperties.properties" /> 
</bean> 

<!-- Data source --> 
<!-- Have spring manage connection management along with connection pooling --> 
<bean id="dataSourceGlobal" class="com.mchange.v2.c3p0.ComboPooledDataSource" 
    destroy-method="close"> 
    <property name="driverClass" value="${driverClass}" /> 
    <property name="jdbcUrl" value="${jdbcUrl" /> 
    <property name="user" value="${user}" /> 
    <property name="password" value="${password}" /> 

    <!-- C3P0 Connection pool properties --> 
    <property name="minPoolSize" value="${c3p0.min_pool_size}" /> 
    <property name="maxPoolSize" value="${c3p0.max_pool_size}" /> 
    <property name="unreturnedConnectionTimeout" value="${c3p0.timeout}" /> 
    <property name="idleConnectionTestPeriod" value="${c3p0.idle_test_period}"/> 
    <property name="maxStatements" value="${c3p0.max_statements}"/> 
    <property name="automaticTestTable" value="${c3p0.automatic_test_table}"/> 
</bean> 

<!-- JPA --> 
<!-- Creates a EntityManagerFactory for use with the Hibernate JPA provider --> 
<bean id="entityManagerFactory" 
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="persistenceUnitName" value="myPU" /> 
    <property name="dataSource" ref="dataSourceGlobal" /> 
</bean> 

<!-- In order to enable EntityManager injection --> 
<bean id="persistenceAnnotation" 
    class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"> 
    <property name="persistenceUnits"> 
     <map> 
      <entry key="myPU" value="persistence/myPU" /> 
     </map> 
    </property> 
</bean> 

<!-- Transactions --> 
<tx:annotation-driven /> 

<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 
    <property name="entityManagerFactory" ref="entityManagerFactory" /> 
    <property name="dataSource" ref="dataSourceGlobal" /> 
</bean>

正如你可以看到我用於彙集C3PO數據源，由Spring容器管理。

我的屬性文件（從Spring容器簡稱）：

driverClass=com.mysql.jdbc.Driver 
jdbcUrl=jdbc:mysql://localhost:3306/yl 
user=root 
password=pass 

c3p0.min_pool_size=5 
c3p0.max_pool_size=20 
c3p0.timeout=5000 
c3p0.idle_test_period=100 
c3p0.max_statements=50 
c3p0.automatic_test_table=test_table

這裏是我的POM依賴關係：

<properties> 
    <java-version>1.6</java-version> 
    <org.springframework-version>3.1.0.RELEASE</org.springframework-version> 
    <hibernate.version>4.1.4.Final</hibernate.version> 
    <org.aspectj-version>1.6.9</org.aspectj-version> 
    <org.slf4j-version>1.5.10</org.slf4j-version> 
</properties> 
<dependencies> 
    <!-- Spring --> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context</artifactId> 
     <version>${org.springframework-version}</version> 
     <exclusions> 
      <!-- Exclude Commons Logging in favor of SLF4j --> 
      <exclusion> 
       <groupId>commons-logging</groupId> 
       <artifactId>commons-logging</artifactId> 
      </exclusion> 
     </exclusions> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-webmvc</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-beans</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-core</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 
    <!--Transaction Management Abstraction (depends on spring-core, spring-beans, 
     spring-aop, spring-context) Define this if you use Spring Transactions or 
     DAO Exception Hierarchy(org.springframework.transaction.*/org.springframework.dao.*) --> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-tx</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 
    <!--JDBC Data Access Library (depends on spring-core, spring-beans, spring-context, 
     spring-tx) Define this if you use Spring's JdbcTemplate API (org.springframework.jdbc.*) --> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-jdbc</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 
    <!--Object-to-Relation-Mapping (ORM) integration with Hibernate, JPA, and 
     iBatis.(depends on spring-core, spring-beans, spring-context, spring-tx) 
     Define this if you need ORM (org.springframework.orm.*) --> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-orm</artifactId> 
     <version>${org.springframework-version}</version> 
    </dependency> 

    <!-- DB Connection --> 
    <dependency> 
     <groupId>c3p0</groupId> 
     <artifactId>c3p0</artifactId> 
     <version>0.9.1.2</version> 
     <type>jar</type> 
     <scope>compile</scope> 
    </dependency> 

    <!-- MySQL database driver --> 
    <dependency> 
     <groupId>mysql</groupId> 
     <artifactId>mysql-connector-java</artifactId> 
     <version>5.1.20</version> 
    </dependency> 

    <!-- Hibernate --> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-validator</artifactId> 
     <version>4.3.0.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-entitymanager</artifactId> 
     <version>${hibernate.version}</version> 
    </dependency> 
    <dependency> 
     <groupId>javax.validation</groupId> 
     <artifactId>validation-api</artifactId> 
     <version>1.0.0.GA</version> 
     <scope>provided</scope> 
    </dependency> 

    <!-- AspectJ --> 
    <dependency> 
     <groupId>org.aspectj</groupId> 
     <artifactId>aspectjrt</artifactId> 
     <version>${org.aspectj-version}</version> 
    </dependency> 

    <!-- Logging --> 
    <dependency> 
     <groupId>org.slf4j</groupId> 
     <artifactId>slf4j-api</artifactId> 
     <version>${org.slf4j-version}</version> 
    </dependency> 
    <dependency> 
     <groupId>org.slf4j</groupId> 
     <artifactId>jcl-over-slf4j</artifactId> 
     <version>${org.slf4j-version}</version> 
     <scope>runtime</scope> 
    </dependency> 
    <dependency> 
     <groupId>org.slf4j</groupId> 
     <artifactId>slf4j-log4j12</artifactId> 
     <version>${org.slf4j-version}</version> 
     <scope>runtime</scope> 
    </dependency> 
    <dependency> 
     <groupId>log4j</groupId> 
     <artifactId>log4j</artifactId> 
     <version>1.2.15</version> 
     <exclusions> 
      <exclusion> 
       <groupId>javax.mail</groupId> 
       <artifactId>mail</artifactId> 
      </exclusion> 
      <exclusion> 
       <groupId>javax.jms</groupId> 
       <artifactId>jms</artifactId> 
      </exclusion> 
      <exclusion> 
       <groupId>com.sun.jdmk</groupId> 
       <artifactId>jmxtools</artifactId> 
      </exclusion> 
      <exclusion> 
       <groupId>com.sun.jmx</groupId> 
       <artifactId>jmxri</artifactId> 
      </exclusion> 
     </exclusions> 
     <scope>runtime</scope> 
    </dependency> 

    <!-- @Inject --> 
    <dependency> 
     <groupId>javax.inject</groupId> 
     <artifactId>javax.inject</artifactId> 
     <version>1</version> 
    </dependency> 

    <!-- Misc --> 
    <dependency> 
     <groupId>commons-lang</groupId> 
     <artifactId>commons-lang</artifactId> 
     <version>2.6</version> 
    </dependency> 

    <!-- Servlet --> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>servlet-api</artifactId> 
     <version>2.5</version> 
     <scope>provided</scope> 
    </dependency> 
    <dependency> 
     <groupId>javax.servlet.jsp</groupId> 
     <artifactId>jsp-api</artifactId> 
     <version>2.1</version> 
     <scope>provided</scope> 
    </dependency> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>jstl</artifactId> 
     <version>1.2</version> 
    </dependency> 

    <!-- Test --> 
    <dependency> 
     <groupId>junit</groupId> 
     <artifactId>junit</artifactId> 
     <version>4.9</version> 
     <scope>test</scope> 
    </dependency> 
</dependencies>

我的web.xml文件是一個標準的Spring MVC的web.xml與加我的持久性單元定義：

<persistence-unit-ref> 
    <persistence-unit-ref-name>persistence/myPU</persistence-unit-ref-name> 
    <persistence-unit-name>myPU</persistence-unit-name> 
</persistence-unit-ref>

我的DAO注入了實體管理器：

@PersistenceContext 
protected EntityManager entityManager;

而在去年，這裏是我的persistence.xml位於下我的META-INF文件夾：

<persistence-unit name="myPU" transaction-type="RESOURCE_LOCAL"> 
    <provider>org.hibernate.ejb.HibernatePersistence</provider> 
    <properties> 
     <property name="hibernate.transaction.flush_before_completion" 
      value="true" /> 
     <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect" /> 
     <property name="hibernate.show_sql" value="true" /> 
    </properties> 
</persistence-unit>

當試圖訪問DB我得到java.sql.SQLException中：無合適的驅動程序：

java.sql.SQLException: No suitable driver java.sql.DriverManager.getDriver(DriverManager.java:289) com.mchange.v2.c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.java:223) com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:119) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:143) com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:132) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.initializeAutomaticTestTable(C3P0PooledConnectionPoolManager.java:772) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.createPooledConnectionPool(C3P0PooledConnectionPoolManager.java:696) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:257) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPoolManager.getPool(C3P0PooledConnectionPoolManager.java:271) com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128) org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider.getConnection(InjectedDataSourceConnectionProvider.java:70) org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection(AbstractSessionImpl.java:281) org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:297) org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:169) org.hibernate.engine.jdbc.internal.proxy.ConnectionProxyHandler.extractPhysicalConnection(ConnectionProxyHandler.java:82) org.hibernate.engine.jdbc.internal.proxy.ConnectionProxyHandler.continueInvocation(ConnectionProxyHandler.java:138) org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81) $Proxy45.prepareStatement(Unknown Source) org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:147) org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:166) org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:145) org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1711) org.hibernate.loader.Loader.doQuery(Loader.java:828) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:289) org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) org.hibernate.loader.Loader.loadEntity(Loader.java:2033) org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82) org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72) org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3719) org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:449) org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:418) org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:204) org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:251) org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:148) org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1079) org.hibernate.internal.SessionImpl.access$2200(SessionImpl.java:172) org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2425) org.hibernate.internal.SessionImpl.get(SessionImpl.java:975) org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:807) org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:781) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:365) $Proxy44.find(Unknown Source) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240) $Proxy21.find(Unknown Source) com.yl.tomcat.dal.impl.BasicJpaDao.read(BasicJpaDao.java:48) com.yl.tomcat.app.bl.UserService.updateUserName(UserService.java:17) com.yl.tomcat.web.HomeController.String(HomeController.java:53) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:212) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789) javax.servlet.http.HttpServlet.service(HttpServlet.java:641) javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

以類似於螺紋（this和this）將溶液通過將MySQL驅動罐子在服務器lib文件夾設置。 （$ CATALINA_HOME/lib中）。 目前我只有在我的應用程序classpath中有jar，我想知道上面的解決方案是否是唯一可用的（我不喜歡它，它將我的應用程序耦合到我的tomcat服務器，這在我看來並不是最優的） ？

不管怎麼說 - 甚至當我複製了MySQL的jar到Tomcat的lib庫並沒有改變任何東西:( 我錯過了什麼沿途

任何幫助，高度讚賞， 瑜珈

來源

2012-07-01 forhas

+1

如果mysql jar文件在你的WEB-INF/lib文件夾中，它應該可以工作 –

+0

它必須在這個特定位置下嗎？我的意思是，目前它在我的maven依賴項下，並且所有maven依賴項默認都在我的類路徑中，所以您建議的位置有什麼特別之處？ – forhas

+0

[Maven war插件]（http://maven.apache.org/plugins/maven-war-plugin/usage.html）會爲你解決問題。只要定義你的包裝' war''如果你沒有使用'mvn package'打包並且打包' –

回答

9

？好吧，我知道了

如說在這裏：。 http://doc.51windows.net/mysql/?url=/mysql/ch23s03.html 的SQLException「無合適的驅動程序」意味着，無論是駕駛員是不是在你的CLASSPATH或您的網址格式不正確

顯然我錯過了一個支架有：

  • 複製mysql的罐子到tomcat：

    <property name="jdbcUrl" value="${jdbcUrl" />

    我經歷了許多解決方案，例如去了。這不是必需的，因爲它已經在我的 類路徑中。

  • 安裝不同的mysql連接器（5.1.2-bin而不是5.1.2） 這也不是必需的。
  • Downdgrade休眠版本從4.1.4到4.1.1 - 不需要爲 。

所以我的網址格式不正確。 修復後，我遇到了一些其他問題。

例如，在某些時候，我決定persistence.xml中的位置添加到我的EntityManager定義：

<property name="persistenceXmlLocation" value="META-INF/persistence.xml"/>

但後來得到：

ContainerEntityManagerFactoryBean can't find persistence.xml in war file

的問題是，我不得不添加我的路徑之前的類路徑（因爲META-INF在標準maven項目格式的classpath下是自然的）：

<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"/>

比某種原因，我得到：

java.lang.ClassNotFoundException: org.aspectj.util.PartialOrder$PartialComparable

添加aspectjweaver依賴於我的pom.xml解決該問題：

<dependency> 
    <groupId>org.aspectj</groupId> 
    <artifactId>aspectjweaver</artifactId> 
    <version>1.6.6</version> 
    </dependency>

固定之後，我得到了：

ERROR: org.hibernate.engine.jdbc.spi.SqlExceptionHelper - Access denied for user 'testUser '@'localhost' (using password: YES)

我甚至嘗試重新安裝MySQL，但目前爲止沒有成功。我想我會嘗試爲這個打開一個不同的線程。

來源

2012-07-06 09:02:53 forhas

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