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Error creating bean with name ‘org.springframework.web.servlet.mvc.method.annotation.RequestMappingH_error creating bean with name 'org.springframework

作者：你好赵伟 | 2024-03-13 17:36:44

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error creating bean with name 'org.springframework.web.servlet.mvc.method.an

SpringMVC练习JSON数据绑定时出现的问题

开门见山，原因如下，最下面是添加jar包的教程

根本原因是因为打包的工程内没有你pom新添加的依赖jar包

项目启动后报错如下

 idea内报错如下

  1. 26-Apr-2022 23:46:55.817 警告 [RMI TCP Connection(2)-127.0.0.1] org.springframework.context.support.AbstractApplicationContext.refresh Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' defined in class path resource [spring-mvc.xml]: Cannot create inner bean 'org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#42545a09' of type [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter] while setting bean property 'messageConverters' with key [0]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#42545a09': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter] from ClassLoader [ParallelWebappClassLoader
  2.   context: MVC12_Web_exploded
  3.   delegate: false
  4. ----------> Parent Classloader:
  5. java.net.URLClassLoader@123772c4
  6. ]
  7. 26-Apr-2022 23:46:55.821 严重 [RMI TCP Connection(2)-127.0.0.1] org.springframework.web.servlet.FrameworkServlet.initServletBean Context initialization failed
  8. 	org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' defined in class path resource [spring-mvc.xml]: Cannot create inner bean 'org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#42545a09' of type [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter] while setting bean property 'messageConverters' with key [0]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#42545a09': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter] from ClassLoader [ParallelWebappClassLoader
  9.   context: MVC12_Web_exploded
  10.   delegate: false
  11. ----------> Parent Classloader:
  12. java.net.URLClassLoader@123772c4
  13. ]
  14. 		at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:389)
  15. 		at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:127)
  16. 		at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:428)
  17. 		at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:173)
  18. 		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1697)
  19. 		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1442)
  20. 		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593)
  21. 		at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516)
  22. 		at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324)
  23. 		at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
  24. 		at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322)
  25. 		at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
  26. 		at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897)
  27. 		at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
  28. 		at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
  29. 		at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
  30. 		at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
  31. 		at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
  32. 		at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
  33. 		at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
  34. 		at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
  35. 		at javax.servlet.GenericServlet.init(GenericServlet.java:158)
  36. 		at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1164)
  37. 		at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1117)
  38. 		at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1010)
  39. 		at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4957)
  40. 		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5264)
  41. 		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
  42. 		at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:726)
  43. 		at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:698)
  44. 		at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:696)
  45. 		at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1783)
  46. 		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  47. 		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  48. 		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  49. 		at java.lang.reflect.Method.invoke(Method.java:498)
  50. 		at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
  51. 		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
  52. 		at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
  53. 		at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:460)
  54. 		at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:408)
  55. 		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  56. 		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  57. 		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  58. 		at java.lang.reflect.Method.invoke(Method.java:498)
  59. 		at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:293)
  60. 		at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
  61. 		at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
  62. 		at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
  63. 		at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
  64. 		at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
  65. 		at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
  66. 		at java.security.AccessController.doPrivileged(Native Method)
  67. 		at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1408)
  68. 		at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
  69. 		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  70. 		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  71. 		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  72. 		at java.lang.reflect.Method.invoke(Method.java:498)
  73. 		at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
  74. 		at sun.rmi.transport.Transport$1.run(Transport.java:200)
  75. 		at sun.rmi.transport.Transport$1.run(Transport.java:197)
  76. 		at java.security.AccessController.doPrivileged(Native Method)
  77. 		at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
  78. 		at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
  79. 		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
  80. 		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
  81. 		at java.security.AccessController.doPrivileged(Native Method)
  82. 		at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
  83. 		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
  84. 		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
  85. 		at java.lang.Thread.run(Thread.java:750)
  86. 	Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.http.converter.json.MappingJackson2HttpMessageConverter#42545a09': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.http.converter.json.MappingJackson2HttpMessageConverter] from ClassLoader [ParallelWebappClassLoader
  87.   context: MVC12_Web_exploded
  88.   delegate: false
  89. ----------> Parent Classloader:
  90. java.net.URLClassLoader@123772c4
  91. ]

大概报错就是这种的，只能复制这么多，具体原因是因为打包的工程内没有你pom新添加的依赖jar包

例如我这里pom依赖了fastjson的三个jar包，但是没有添加到打包的工程内

 

 可以看到没有对应的jar包，直接在这个地方导入jar包就行了

 

这个地方直接全选，idea会自动将不存在lib目录下的jar包添加进去，如果你没有lib目录先在该界面web-inf目录下新建一个，将依赖的jar包放到这个文件夹内

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