我已经在Tomcat 7上创建了一个基本的Spring 3.1 - Hibernate 4 - Mysql 5.5 Web应用程序。 我通过spring + C3PO汇集连接。
更新:我也发布了我的代码。
My Spring应用程序上下文:
<!-- 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>
正如您所看到的,我使用了一个C3PO数据源进行池化,由spring容器管理。
我的属性文件(从spring容器引用):
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
以下是我的POM依赖项:
<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是一个标准的Spring MVC web.xml,增加了我的持久性单元定义:
<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注入了实体经理:
@PersistenceContext
protected EntityManager entityManager;
最后,这是我的persistence.xml,它位于我的META-INF文件夹下:
<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>
尝试访问数据库时我得到java.sql.SQLException:没有合适的驱动程序:
java.sql.SQLException:没有合适的驱动程序 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(未知来源) 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(原生方法) 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(未知来源) sun.reflect.NativeMethodAccessorImpl.invoke0(原生方法) 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(未知来源) 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(原生方法) 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)
在类似的线程(this和this)中,通过将mysql驱动程序jar放在服务器lib文件夹中来提供解决方案。 ($ CATALINA_HOME / lib中)。 目前我只在我的应用程序类路径中有jar,我想知道上面的解决方案是否是唯一可用的(我不喜欢它,它将我的应用程序耦合到我的tomcat服务器,这不是最佳的我的意见)?
无论如何 - 即使我将mysql jar复制到tomcat的lib库它也没有改变任何东西:( 我一路上都想念一下吗?
非常感谢任何帮助, 瑜珈
答案 0 :(得分:9)
好的,我明白了。
如下所述: http://doc.51windows.net/mysql/?url=/mysql/ch23s03.html SQLException'No Suitable Driver'表示驱动程序不在您的CLASSPATH中,或者您的URL格式不正确。
显然我在那里错过了一个括号:
<property name="jdbcUrl" value="${jdbcUrl" />
我已经通过了许多解决方案提案,例如:
所以我的网址格式不正确。 解决这个问题后,我遇到了一些其他问题。
例如,在某些时候我决定将persistence.xml位置添加到我的entitymanager定义中:
<property name="persistenceXmlLocation" value="META-INF/persistence.xml"/>
但后来得到了:
ContainerEntityManagerFactoryBean在war文件中找不到persistence.xml
问题是我必须在路径之前添加类路径(因为META-INF在标准maven项目格式的类路径下是自然的):
<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"/>
由于某种原因,我得到了:
java.lang.ClassNotFoundException:org.aspectj.util.PartialOrder $ PartialComparable
将aspectjweaver依赖项添加到我的pom.xml解决了这个问题:
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.6</version>
</dependency>
修好后我得到了:
错误:org.hibernate.engine.jdbc.spi.SqlExceptionHelper - 用户'testUser'@'localhost'拒绝访问(使用密码:YES)
我甚至尝试重新安装mysql但到目前为止没有成功。我猜我会尝试为这个打开一个不同的主题。