我有一个使用maven编译并在tomcat 7上部署的Spring应用程序。
我正在尝试使用JUnit 4实现一些测试用例。我成功地对应用程序的一部分进行了一些测试，但是当我想测试使用外部框架的两个部分时，我遇到了编译问题：Shiro和OIOSAML。既然这里没有OIOSAML社区，我会专注于shiro，但我相信问题的原因是一样的。
当我尝试在JUnit测试中加载应用程序上下文时，我获得了加载错误（参见下文）。看起来在框架部分中无法加载/找到某些依赖项。以下是一些有用的信息：
Shiro例外：
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'authorization' defined in class path resource [test-context.xml]:
Instantiation of bean failed;
nested exception is org.springframework.beans.BeanInstantiationException:
Could not instantiate bean class [myPackage.ShiroAuthorization]:
Constructor threw exception; nested exception is org.apache.shiro.config.ConfigurationException:
Unable to instantiate class [com.mysql.jdbc.jdbc2.optional.MysqlDataSource] for object named 'ds'.
Please ensure you've specified the fully qualified class name correctly.
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1035)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:939)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
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.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at myPackage.Test.init(Test.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
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.BeanInstantiationException: Could not instantiate bean class [myPackage.ShiroAuthorization]: Constructor threw exception; nested exception is org.apache.shiro.config.ConfigurationException: Unable to instantiate class [com.mysql.jdbc.jdbc2.optional.MysqlDataSource] for object named 'ds'. Please ensure you've specified the fully qualified class name correctly.
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:162)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:110)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:280)
... 29 more
Caused by: org.apache.shiro.config.ConfigurationException: Unable to instantiate class [com.mysql.jdbc.jdbc2.optional.MysqlDataSource] for object named 'ds'. Please ensure you've specified the fully qualified class name correctly.
at org.apache.shiro.config.ReflectionBuilder.createNewInstance(ReflectionBuilder.java:151)
at org.apache.shiro.config.ReflectionBuilder.buildObjects(ReflectionBuilder.java:119)
at org.apache.shiro.config.IniSecurityManagerFactory.buildInstances(IniSecurityManagerFactory.java:161)
at org.apache.shiro.config.IniSecurityManagerFactory.createSecurityManager(IniSecurityManagerFactory.java:124)
at org.apache.shiro.config.IniSecurityManagerFactory.createSecurityManager(IniSecurityManagerFactory.java:102)
at org.apache.shiro.config.IniSecurityManagerFactory.createInstance(IniSecurityManagerFactory.java:88)
at org.apache.shiro.config.IniSecurityManagerFactory.createInstance(IniSecurityManagerFactory.java:46)
at org.apache.shiro.config.IniFactorySupport.createInstance(IniFactorySupport.java:123)
at org.apache.shiro.util.AbstractFactory.getInstance(AbstractFactory.java:47)
at myPackage.ShiroAuthorization.<init>(ShiroAuthorization.java:31)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
... 31 more
Caused by: org.apache.shiro.util.UnknownClassException: Unable to load class named [com.mysql.jdbc.jdbc2.optional.MysqlDataSource] from the thread context, current, or system/application ClassLoaders. All heuristics have been exhausted. Class could not be found.
at org.apache.shiro.util.ClassUtils.forName(ClassUtils.java:148)
at org.apache.shiro.util.ClassUtils.newInstance(ClassUtils.java:164)
at org.apache.shiro.config.ReflectionBuilder.createNewInstance(ReflectionBuilder.java:144)
... 45 more
Shiro.ini
...
ds = com.mysql.jdbc.jdbc2.optional.MysqlDataSource
ds.url = jdbc:mysql://*******
...
jdbcRealm=org.apache.shiro.realm.jdbc.JdbcRealm
jdbcRealm.permissionsLookupEnabled=true
jdbcRealm.dataSource = $ds
...
securityManager.realms = $jdbcRealm,
...
OIOSAML例外：
...Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/opensaml/xml/ConfigurationException...
测试用例
...
public static ApplicationContext context;
@BeforeClass
public static void init() throws Exception {
context = new ClassPathXmlApplicationContext("test-context.xml");
}
我尝试使用上下文文件，但没有任何帮助。奇怪的是我可以成功测试tomcat 7的连接池，它显示依赖项已正确加载。
我提醒你一切正常，除非我想用JUnit测试它。
答案 0 :(得分：1)
尝试使用以下命令注释您的JUnit测试类：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
"classpath:/test-context.xml"
})
这会在运行JUnit测试时加载applicationContext。
确保您的applicationContext xml在您的类路径上。
答案 1 :(得分：1)
你的classpath中有mySql驱动吗？可能这就是问题所在。