spring整合mybatis异常：
1.传递json数据时，报这个错，是因为导错jar包了,导入
jackson-core-asl-1.9.11.jar
jackson-mapper-asl-1.9.11.jar，
错误即可解决。
2.如果问题还在，就是存在jar包冲突，将所有jar包删除，重新导入，即可。
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' defined in class path resource [springmvc.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonProcessingException
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.
    at
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at
Caused by: java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonProcessingException
    at
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    ... 33 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.JsonProcessingException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    ... 46 more
五月 07, 2017 8:23:45 下午 org.apache.catalina.core.ApplicationContext log
SEVERE: StandardWrapper.Throwable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' defined in class path resource [springmvc.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonProcessingException
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.
    at
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at
Caused by: java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonProcessingException
    at
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    ... 33 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.JsonProcessingException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    ... 46 more

五月 07, 2017 8:23:45 下午 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Allocate exception for servlet springmvc
java.lang.ClassNotFoundException: org.codehaus.jackson.JsonProcessingException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.
    at
    at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.
    at
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at