解决Cannot find class [org.springframework.http.converter.json.MappingJacksonHttpMessageConverter]

电玩女神 2022-09-08 00:15 189阅读 0赞

【现象】

2021 20:49:35 ERROR org.springframework.web.servlet.DispatcherServlet - Context initialization failed  
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping': Initialization of bean failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class \[org.springframework.http.converter.json.MappingJacksonHttpMessageConverter\] for bean with name 'mappingJacksonHttpMessageConverter' defined in class path resource \[spring/ApplicationContext-mvc.xml\]; nested exception is java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJacksonHttpMessageConverter  
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class \[org.springframework.http.converter.json.MappingJacksonHttpMessageConverter\] for bean with name 'mappingJacksonHttpMessageConverter' defined in class path resource \[spring/ApplicationContext-mvc.xml\]; nested exception is java.lang.ClassNotFoundException: org.springframework.http.converter.json.MappingJacksonHttpMessageConverter  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602)  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)  
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)  
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)  
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)  
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)  
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)  
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)  
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)  
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)  
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)  
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)  
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)  
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)  
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1144)  
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1091)  
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:983)  
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4962)  
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5274)  
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)  
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)  
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)  
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)  
    at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1735)  
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
    at java.lang.reflect.Method.invoke(Method.java:498)  
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)  
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)  
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)  
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:482)  
    at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:431)  
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
    at java.lang.reflect.Method.invoke(Method.java:498)  
    at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:300)  
    at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)  
    at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)  
    at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)  
    at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)  
    at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)  
    at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)  
    at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)  
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)  
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)  
    at java.lang.reflect.Method.invoke(Method.java:498)  
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)  
    at sun.rmi.transport.Transport$1.run(Transport.java:200)  
    at sun.rmi.transport.Transport$1.run(Transport.java:197)  
    at java.security.AccessController.doPrivileged(Native Method)  
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)  
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)  
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)  
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)  
    at java.security.AccessController.doPrivileged(Native Method)  
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)  
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)  
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)  
    at java.lang.Thread.run(Thread.java:748)

【解决方法】

<bean id="mappingJacksonHttpMessageConverter"
       class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
       <property name="supportedMediaTypes">
          <list>
             <value>text/html;charset=UTF-8</value>
          </list>
       </property>
    </bean>

修改为：

<bean id="mappingJacksonHttpMessageConverter"
       class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
       <property name="supportedMediaTypes">
          <list>
             <value>text/html;charset=UTF-8</value>
          </list>
       </property>
    </bean>