出现错误

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出现错误：无法加载JDBC驱动程序类[org.postgresql.Driver]

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本文介绍了出现错误：无法加载JDBC驱动程序类[org.postgresql.Driver]的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我试图运行一个Junit测试，在没有maven的项目之前配置过，现在我试图进行这种集成，但是我停止了这个错误： 

  java.lang.IllegalStateException：无法在org.springframework.test.context.TestContext.getApplicationContext（TestContext.java:157）
加载的ApplicationContext 
。在有机.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies（DependencyInjectionTestExecutionListener.java:109）
在org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance（DependencyInjectionTestExecutionListener.java:75）
。在组织.springframework.test.context.TestContextManager.prepareTestInstance（TestContextManager.java:321）
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest（SpringJUnit4ClassRunner.java:211）
 at org.springframework .test.context.junit4。 SpringJUnit4ClassRunner $ 1.runReflectiveCall（SpringJUnit4ClassRunner.java:288）
 at org.junit.internal.runners.model.ReflectiveCallable.run（ReflectiveCallable.java:15）
 at org.springframework.test.context.junit4 .SpringJUnit4ClassRunner.methodBlock（SpringJUnit4ClassRunner.java:290）
 at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:231）
 at org.junit.runners.BlockJUnit4ClassRunner.runChild （BlockJUnit4ClassRunner.java:47）
在org.junit.runners.ParentRunner $ 3.run（ParentRunner.java:231）$ b $在org.junit.runners.ParentRunner $ 1.schedule b（ParentRunner.java:60 ）在org.junit.runners.ParentRunner.runChildren（ParentRunner.java:229 
）
在org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:50）$ b $在组织b .junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:222）
 at org.springframework.test.context.junit4.statements.RunBefore TestClassCallbacks.evaluate（RunBeforeTestClassCallbacks.java:61）
 at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:71）
 at org.junit.runners.ParentRunner。在org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run运行（ParentRunner.java:300）
（SpringJUnit4ClassRunner.java:174）
。在org.eclipse.jdt.internal.junit4.runner。 JUnit4TestReference.run（JUnit4TestReference.java:50）
在org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）
。在org.eclipse.jdt.internal。在org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467）
（RemoteTestRunner.java:683）
。在org.eclipse。 jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）
在org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main（RemoteTes tRunner.java:197）
导致：org.springframework.beans.factory.BeanCreationException：在类路径资源[com / digital / resources / applicationContext.xml]中定义名称'dataSource'时创建bean的错误：错误设置财产价值;嵌套异常是org.springframework.beans.PropertyBatchUpdateException;嵌套PropertyAccessExceptions（1）：
 PropertyAccessException 1：org.springframework.beans.MethodInvocationException：属性'driverClassName'引发异常;嵌套异常是java.lang.IllegalStateException：无法在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1396）中加载JDBC驱动程序类[org.postgresql.Driver] 
 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:517）$ b $ org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.java:1118 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:456）
 at org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:294）
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:225）
 at org。 springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:291）$ or $ $ b $ org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
 at org。 springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons（DefaultListableBeanFactory.java:585）
 at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:913）
 at org.springframework。 context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:464）
处org.springframework.test org.springframework.test.context.support.AbstractGenericContextLoader.loadContext（AbstractGenericContextLoader.java:103）
。 context.support.AbstractGenericContextLoader.loadContext（AbstractGenericContextLoader.java:1）
 at org.springframework.test.context.support.DelegatingSmartContextLoader.loadConte XT（DelegatingSmartContextLoader.java:228）
在org.springframework.test.context.TestContext.loadApplicationContext（TestContext.java:124）
在org.springframework.test.context.TestContext.getApplicationContext（的TestContext。 java：148）
 ... 24 more 
导致：org.springframework.beans.PropertyBatchUpdateException;嵌套PropertyAccessExceptions（1）：
 PropertyAccessException 1：org.springframework.beans.MethodInvocationException：属性'driverClassName'引发异常;嵌套异常是java.lang.IllegalStateException：在org.springframework.beans.AbstractPropertyAccessor.setPropertyValues（AbstractPropertyAccessor.java:102）在有机
无法加载JDBC驱动类[org.postgresql.Driver] 
。 springframework.beans.AbstractPropertyAccessor.setPropertyValues（AbstractPropertyAccessor.java:58）
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1393）
 ... 39 more

这是我的pom： 

 < project xmlns =http://maven.apache.org/POM/4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://maven.apache.org/POM/4.0.0 
 http://maven.apache.org/maven-v4_0_0.xsd\"> 
 
< modelVersion> 4.0.0< / modelVersion> 
< groupId> com.digital< / groupId> 
< artifactId> SLC< / artifactId> 
<包装>战争< / packaging> 
< version> 1.0-SNAPSHOT< / version> 
<名称> SLC< /名称> 
< url> http：//maven.apache.org< / url> 
 
< repositories> 
< repository> 
< id> prime-repo< / id> 
< name> PrimeFaces Maven仓库< /名称> 
< url> http：//repository.primefaces.org< / url> 
< layout>预设< / layout> 
< / repository> 
< / repositories> 
 
<属性> 
< spring.version> 3.1.1.RELEASE< /spring.version> 
< / properties> 
 
 
<依赖关系> 
 
< dependency> 
< groupId> junit< / groupId> 
< artifactId> junit< / artifactId> 
< version> 4.4< / version> 
< /依赖关系> 
 
<！ -  Spring 3依赖关系 - > 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-core< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-context< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-web< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-tx< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-orm< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-test< / artifactId> 
< version> $ {spring.version}< / version> 
< /依赖关系> 
 
<！ -  JSF库 - > 
< dependency> 
< groupId> com.sun.faces< / groupId> 
< artifactId> jsf-api< / artifactId> 
< version> 2.1.6< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> com.sun.faces< / groupId> 
< artifactId> jsf-impl< / artifactId> 
< version> 2.1.6< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> javax.servlet< / groupId> 
< artifactId> jstl< / artifactId> 
< version> 1.2< / version> 
< /依赖关系> 
 
<！ -  Primefaces库 - > 
< dependency> 
< groupId> org.primefaces< / groupId> 
< artifactId> primefaces< / artifactId> 
< version> 3.5< / version> 
< /依赖关系> 
 
 < dependency> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-core< / artifactId> 
< version> 4.1.0.Final< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> javassist< / groupId> 
< artifactId> javassist< / artifactId> 
< version> 3.12.1.GA< / version> 
< /依赖关系> 
 
<！ -  Postgress Java连接器库 - > 
< dependency> 
< groupId> postgresql< / groupId> 
< artifactId> postgresql< / artifactId> 
< version> 9.1-901.jdbc4< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> c3p0< / groupId> 
< artifactId> c3p0< / artifactId> 
< version> 0.9.1.2< / version> 
< /依赖关系> 
 
 < dependency> 
< groupId> log4j< / groupId> 
< artifactId> log4j< / artifactId> 
< version> 1.2.16< / version> 
< /依赖关系> 
 
< dependency> 
< groupId> org.testng< / groupId> 
< artifactId> testng< / artifactId> 
< version> 6.4< / version> 
< /依赖关系> 
 
< /依赖关系> 
< / project>

这是我使用spring3，jpa，hibernate4的applicationContext.xml：

 < beans xmlns =http://www.springframework.org/schema/beans
 xmlns：context =http：// www .springframework.org / schema / context
 xmlns：security =http://www.springframework.org/schema/security
 xmlns：tx =http://www.springframework.org / schema / txxmlns：aop =http://www.springframework.org/schema/aop
 xmlns：jdbc =http://www.springframework.org/schema/jdbcxmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xmlns：task =http://www.springframework.org/schema/task
 xsi：schemaLocation = http://www.springframework.org/schema/beans 
 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
 http：//www.springframework。 org / schema / context 
 http://www.springframework.org/schema/context/spring-context-3.0.xsd 
 http：//www.springframework.o rg / schema / jdbc 
 http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd 
 http://www.springframework.org/schema/security 
 http://www.springframework.org/schema/security/spring-security-3.1.xsd 
 http://www.springframework.org/schema/tx 
 http：//www.springframework .org / schema / tx / spring-tx-3.0.xsd 
 http://www.springframework.org/schema/aop 
 http://www.springframework.org/schema/aop/spring -aop-3.0.xsd 
 http://www.springframework.org/schema/task 
 http://www.springframework.org/schema/task/spring-task-3.0.xsd 
 http://www.springframework.org/schema/util 
 http://www.springframework.org/schema/util/spring-util-3.0.xsd\"> 
 
< bean id =dataSource
 class =org.springframework.jdbc.datasource.DriverManagerDataSource> 
< property name =driverClassName> 
< value> org.postgresql.Driver< / value> 
< / property> 
< property name =url> 
< value> jdbc：postgresql：// localhost：5432 / slc< / value> 
< / property> 
< property name =username> 
<值> postgres< /值> 
< / property> 
< property name =password> 
<值> 1< /值> 
< / property> 
< / bean> 
 
将豆ID = 的entityManagerFactory 
类= org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean 
自动装配候选= 默认 > 
< property name =dataSourceref =dataSource/> 
< property name =hibernateProperties> 
<道具> 
< prop key =hibernate.dialect> org.hibernate.dialect.PostgreSQLDialect< / prop> 
< prop key =hibernate.show_sql> true< / prop> 
< prop key =hibernate.format_sql> true< / prop> 
< prop key =hibernate.hbm2ddl.SEQUENCE> update< / prop> 
< prop key =hibernate.hbm2ddl.auto> update< / prop> 
< prop key =hibernate.id.new_generator_mappings> true< / prop> 
< /道具> 
< / property> 
< property name =annotatedClasses> 
< list> 
<值> com.digital.model.Pagina< /值> 
< / list> 
< / property> 
< / bean> 
 
< bean id =transactionManagerclass =org.springframework.orm.jpa.JpaTransactionManager
 autowire-candidate =default> 
< property name =entityManagerFactoryref =entityManagerFactory/> 
< / bean> 
 
< tx：注解驱动的事务管理器=transactionManager
 proxy-target-class =true/> 
 
< bean 
 class =org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor/> 
< context：annotation-config /> 
< context：component-scan base-package =com.digital/> 
 
< / beans>

以下是我的测试： 

  package com.digital.test; 
 
导入junit.framework.TestCase; 
 
 import org.junit.runner.RunWith; 
 import org.springframework.beans.factory.annotation.Autowired; 
 import org.springframework.test.context.ContextConfiguration; 
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; 
 import org.springframework.test.context.transaction.TransactionConfiguration; 
 import org.springframework.transaction.annotation.Transactional; 
 import org.junit.Test; 
 
 import com.digital.dao.PaginaDao; 
 import com.digital.model.Pagina; 
 import com.digital.service.PaginaService; 
 
 @TransactionConfiguration（defaultRollback =真）
 @RunWith（SpringJUnit4ClassRunner.class）来
 @ContextConfiguration（位置= { /com/digital/resources/applicationContext.xml}） 
 public class PaginaTest extends TestCase {
 
 @Autowired 
 private PaginaDao paginaDao; 
 
 @Test 
 @Transactional 
 public void testTeste（）{
 assertTrue（true）; 
 
 Pagina pagina = new Pagina（）; 
 pagina.setNome（Junit3）; 
 pagina.setPagina（Rollback3）; 
 
 PaginaService paginaService = new PaginaService（）; 
 // paginaDao.salvar（pagina）; 
 paginaService.salvar（pagina）; 
 
 
 
 $ b


解决方案

你可以在你的项目中做一个简单的测试，以确保类org.postgresql.Driver在你的类路径中

  try {
 Class.forName（org.postgresql.Driver）; 
 // classpath 
} catch（ClassNotFoundException e）{
 // not classpath 
}


I'm trying run a Junit test,have configured before only projects without maven, now i am trying to make this integration, but i stop in this following error:

    java.lang.IllegalStateException: Failed to load ApplicationContext
        at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:157)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
        at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
        at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:290)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
        at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
        at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
        at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
        at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
        at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
        at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
        at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
        at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
        at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
        at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
        at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
        at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
        at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/digital/resources/applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
    PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [org.postgresql.Driver]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1396)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1118)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
        at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:103)
        at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:1)
        at org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext(DelegatingSmartContextLoader.java:228)
        at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.java:124)
        at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:148)
        ... 24 more
    Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
    PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'driverClassName' threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [org.postgresql.Driver]
        at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:102)
        at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:58)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1393)
        ... 39 more

This is my pom:

   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
      http://maven.apache.org/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>
<groupId>com.digital</groupId>
<artifactId>SLC</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>SLC</name>
<url>http://maven.apache.org</url>

<repositories>
    <repository>
        <id>prime-repo</id>
        <name>PrimeFaces Maven Repository</name>
        <url>http://repository.primefaces.org</url>
        <layout>default</layout>
    </repository>
</repositories>

<properties>
    <spring.version>3.1.1.RELEASE</spring.version>
</properties>


<dependencies>

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.4</version>
    </dependency>

    <!-- Spring 3 dependencies -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring.version}</version>
    </dependency>


    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!-- JSF library -->
    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-api</artifactId>
        <version>2.1.6</version>
    </dependency>

    <dependency>
        <groupId>com.sun.faces</groupId>
        <artifactId>jsf-impl</artifactId>
        <version>2.1.6</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!-- Primefaces library -->
    <dependency>
        <groupId>org.primefaces</groupId>
        <artifactId>primefaces</artifactId>
        <version>3.5</version>
    </dependency>

    <!-- Hibernate library -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.1.0.Final</version>
    </dependency>

    <dependency>
        <groupId>javassist</groupId>
        <artifactId>javassist</artifactId>
        <version>3.12.1.GA</version>
    </dependency>

    <!-- Postgress Java Connector library -->
    <dependency>
        <groupId>postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <version>9.1-901.jdbc4</version>
    </dependency>

    <dependency>
        <groupId>c3p0</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.1.2</version>
    </dependency>

    <!-- Log4j library -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.16</version>
    </dependency>

    <dependency>
        <groupId>org.testng</groupId>
        <artifactId>testng</artifactId>
        <version>6.4</version>
    </dependency>

   </dependencies>
    </project>

This is my applicationContext.xml with spring3, jpa, hibernate4:

            <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:security="http://www.springframework.org/schema/security"
        xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:task="http://www.springframework.org/schema/task"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/jdbc
        http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
        http://www.springframework.org/schema/security
        http://www.springframework.org/schema/security/spring-security-3.1.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task-3.0.xsd
        http://www.springframework.org/schema/util
        http://www.springframework.org/schema/util/spring-util-3.0.xsd">

        <bean id="dataSource"
            class="org.springframework.jdbc.datasource.DriverManagerDataSource">
            <property name="driverClassName">
                <value>org.postgresql.Driver</value>
            </property>
            <property name="url">
                <value>jdbc:postgresql://localhost:5432/slc</value>
            </property>
            <property name="username">
                <value>postgres</value>
            </property>
            <property name="password">
                <value>1</value>
            </property>
        </bean>

        <bean id="entityManagerFactory"
            class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
            autowire-candidate="default">
            <property name="dataSource" ref="dataSource" />
            <property name="hibernateProperties">
                <props>
                    <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
                    <prop key="hibernate.show_sql">true</prop>
                    <prop key="hibernate.format_sql">true</prop>
                    <prop key="hibernate.hbm2ddl.SEQUENCE">update</prop>
                    <prop key="hibernate.hbm2ddl.auto">update</prop>
                    <prop key="hibernate.id.new_generator_mappings">true</prop>
                </props>
            </property>
            <property name="annotatedClasses">
                <list>
                    <value>com.digital.model.Pagina</value>
                </list>
            </property>
        </bean>

        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"
            autowire-candidate="default">
            <property name="entityManagerFactory" ref="entityManagerFactory" />
        </bean>

        <tx:annotation-driven transaction-manager="transactionManager"
            proxy-target-class="true" />

        <bean
            class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
        <context:annotation-config />
        <context:component-scan base-package="com.digital" />

    </beans>

Here is my test:

            package com.digital.test;

    import junit.framework.TestCase;

    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
    import org.springframework.test.context.transaction.TransactionConfiguration;
    import org.springframework.transaction.annotation.Transactional;
    import org.junit.Test;

    import com.digital.dao.PaginaDao;
    import com.digital.model.Pagina;
    import com.digital.service.PaginaService;

    @TransactionConfiguration(defaultRollback = true)
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(locations = { "/com/digital/resources/applicationContext.xml" })
    public class PaginaTest extends TestCase {

        @Autowired
        private PaginaDao paginaDao;

        @Test
        @Transactional
        public void testTeste() {
            assertTrue(true);

            Pagina pagina = new Pagina();
            pagina.setNome("Junit3");
            pagina.setPagina("Rollback3");

            PaginaService paginaService = new PaginaService();
            // paginaDao.salvar(pagina);
            paginaService.salvar(pagina);

        }

    }
解决方案

You can do a simple test in your project to make sure class "org.postgresql.Driver" is on your classpath

try {
  Class.forName("org.postgresql.Driver");
  //on classpath
} catch(ClassNotFoundException e) {
  // not on classpath
}

这篇关于出现错误：无法加载JDBC驱动程序类[org.postgresql.Driver]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

07-21 03:21
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