- @Autowired注入找不到对应对象
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
qualifying bean of type ‘com.ssm.service.EmployeeService’ available:
expected at least 1 bean which qualifies as autowire candidate.
Dependency annotations:
{@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1717)
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1273)
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$
AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
org.springframework.beans.factory.annotation.Injectionmetadata.inject(Injectionmetadata.java:130)
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
org.springframework.beans.factory.support.AbstractBeanFactory.lambda d o G e t B e a n doGetBean doGetBean
0(AbstractBeanFactory.java:324)
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
org.springframework.web.servlet.frameworkServlet.configureAndRefreshWebApplicationContext(frameworkServlet.java:702)
org.springframework.web.servlet.frameworkServlet.createWebApplicationContext(frameworkServlet.java:668)
org.springframework.web.servlet.frameworkServlet.createWebApplicationContext(frameworkServlet.java:716)
org.springframework.web.servlet.frameworkServlet.initWebApplicationContext(frameworkServlet.java:591)
org.springframework.web.servlet.frameworkServlet.initServletBean(frameworkServlet.java:530)
org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.Authenticatorbase.invoke(Authenticatorbase.java:502)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
org.apache.coyote.AbstractProtocol$ AbstractConnectionHandler.process(AbstractProtocol.java:674)
org.apache.tomcat.util.net.NioEndpoint$ SocketProcessor.doRun(NioEndpoint.java:1500)
org.apache.tomcat.util.net.NioEndpoint$ SocketProcessor.run(NioEndpoint.java:1456)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$ Worker.run(ThreadPoolExecutor.java:624)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:748)
解决方法：
ContextLoaderListener的作用就是启动Web容器时，自动装配ApplicationContext.xml的配置信息。 故在web.xml中加入以下代码：
org.springframework.web.context.ContextLoaderListener
- Junit测试出错
java.lang.NoClassDefFoundError: org/hamcrest/SelfDescribing
at java.lang.ClassLoader.defineClass1(Native Method) at
java.lang.ClassLoader.defineClass(ClassLoader.java:763) at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at
java.net.URLClassLoader.access$100(URLClassLoader.java:73) at
java.net.URLClassLoader$1.run(URLClassLoader.java:368) at
java.net.URLClassLoader 1. r u n ( U R L C l a s s L o a d e r . j a v a : 362 ) a t j a v a . s e c u r i t y . A c c e s s C o n t r o l l e r . d o P r i v i l e g e d ( N a t i v e M e t h o d ) a t j a v a . n e t . U R L C l a s s L o a d e r . f i n d C l a s s ( U R L C l a s s L o a d e r . j a v a : 361 ) a t j a v a . l a n g . C l a s s L o a d e r . l o a d C l a s s ( C l a s s L o a d e r . j a v a : 424 ) a t s u n . m i s c . L a u n c h e r 1.run(URLClassLoader.java:362) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:361) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher 1.run(URLClassLoader.java:362)atjava.security.AccessController.doPrivileged(NativeMethod)atjava.net.URLClassLoader.findClass(URLClassLoader.java:361)atjava.lang.ClassLoader.loadClass(ClassLoader.java:424)atsun.misc.LauncherAppClassLoader.loadClass(Launcher.java:335) at
java.lang.ClassLoader.loadClass(ClassLoader.java:357) at
java.lang.Class.getDeclaredConstructors0(Native Method) at
java.lang.Class.privateGetDeclaredConstructors(Class.java:2671) at
java.lang.Class.getConstructor0(Class.java:3075) at
java.lang.Class.getConstructor(Class.java:1825) at
org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:104)
at
org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:86)
at
org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at
org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at
org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at
org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:49)
at
com.intellij.rt.junit.IdeaTestRunner R e p e a t e r . s t a r t R u n n e r W i t h A r g s ( I d e a T e s t R u n n e r . j a v a : 33 ) a t c o m . i n t e l l i j . r t . j u n i t . J U n i t S t a r t e r . p r e p a r e S t r e a m s A n d S t a r t ( J U n i t S t a r t e r . j a v a : 230 ) a t c o m . i n t e l l i j . r t . j u n i t . J U n i t S t a r t e r . m a i n ( J U n i t S t a r t e r . j a v a : 58 ) C a u s e d b y : j a v a . l a n g . C l a s s N o t F o u n d E x c e p t i o n : o r g . h a m c r e s t . S e l f D e s c r i b i n g a t j a v a . n e t . U R L C l a s s L o a d e r . f i n d C l a s s ( U R L C l a s s L o a d e r . j a v a : 381 ) a t j a v a . l a n g . C l a s s L o a d e r . l o a d C l a s s ( C l a s s L o a d e r . j a v a : 424 ) a t s u n . m i s c . L a u n c h e r Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230) at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58) Caused by: java.lang.ClassNotFoundException: org.hamcrest.SelfDescribing at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)atcom.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)atcom.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)Causedby:java.lang.ClassNotFoundException:org.hamcrest.SelfDescribingatjava.net.URLClassLoader.findClass(URLClassLoader.java:381)atjava.lang.ClassLoader.loadClass(ClassLoader.java:424)atsun.misc.LauncherAppClassLoader.loadClass(Launcher.java:335) at
java.lang.ClassLoader.loadClass(ClassLoader.java:357) … 26 more
解决方法：
在pom中导入hamcrest-all包
org.hamcrest hamcrest-all 1.3 test
之前查阅过问题，需要加入hamcrest-library包，但我加入之后还是会出现上述错误，所以直接导入hamcrest-all包，成功运行
- 在jsp页面引入pageContext.setAttribute爆红
解决方法：
在pom.xml文件中导入javax.servlet.jsp javax.servlet.jsp-api 2.3.1
