【持续更新】SpringMVC学习之异常解决办法总结

1. HTTP Status 500 - Error instantiating servlet class XXX类

type Exception report
message Error instantiating servlet class XXX类
description The server encountered an internal error that prevented it from fulfilling this request.
exception javax.servlet.ServletException: Error instantiating servlet class XXX类
root cause java.lang.ClassNotFoundException: XXX类

再次刷新则出现 404 错误
解决办法：

检查部署的 Tomcat 下的 webapps 下的相应项目里 /WEB-INF/lib 下包是否存在，没有的话添加即可；
检查 url 对应的配置文件（web.xml，applicationcontext.xml…）中对应 servlet-class 标签或 bean 标签中对应 class 属性配置的 XXX类是否引用（检查是否引用用 ctrl + 单击，能点进去说明能够引用）
检查部署的 Tomcat 下的 webapps 下的相应项目里 /WEB-INF/classes 是否存在该文件，应该把 classes 作为编译输出目录；
检查 Tomcat 是否部署成功；

2. HTTP Status 404 -

type Status report
message
description The requested resource is not available.
解决办法：

检查访问的 URl 地址与 Controller 配置的 URL 地址是否一致；

3. HTTP Status 404 - /XXX/XXX.jsp

type Status report
message /XXX/XXX.jsp
description The requested resource is not available.
解决办法：

检查访问的 URl 地址对应的 Controller 中 modelAndView.setViewName() 配置的视图资源是否存在；

4. HTTP Status 500 - Servlet.init() for servlet SpringMVC threw exception

4.1 错误：java.lang.IllegalArgumentException

java.lang.IllegalArgumentException
	org.springframework.asm.ClassReader.<init>(Unknown Source)
	org.springframework.asm.ClassReader.<init>(Unknown Source)
	org.springframework.asm.ClassReader.<init>(Unknown Source)
	org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:52)
	org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80)
	org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:101)
	org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:76)
	org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:298)
	org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:300)
	org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:300)
	org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:230)
	org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:153)
	org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:130)
	org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:285)
	org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:223)
	org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:630)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:647)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:598)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:661)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:517)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:458)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
	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)

产生原因：Spring 项目所运行的 Tomcat 所用的Java 编译器（JDK）版本与 Spring3.X 不兼容；
解决方法：将 Tomcat 所用的 Java编译器（JDK）版本改为1.7及以下版本，因为 Spring 3.X 支持最高 JDK 1.7 版本的，Spring 4.X 最低支持 JDK 1.6；

4.2 错误：org.springframework.beans.factory.BeanDefinitionStoreException

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [D:\apache-tomcat-7.0.69\wtpwebapps\spring01\WEB-INF\classes\com\ssm\controller\ItemsController.class]; nested exception is java.lang.IllegalArgumentException
	org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.findCandidateComponents(ClassPathScanningCandidateComponentProvider.java:281)
	org.springframework.context.annotation.ClassPathBeanDefinitionScanner.doScan(ClassPathBeanDefinitionScanner.java:242)
	org.springframework.context.annotation.ComponentScanBeanDefinitionParser.parse(ComponentScanBeanDefinitionParser.java:84)
	org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73)
	org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1435)
	org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1425)
	org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:184)
	org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:140)
	org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:111)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
	org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
	org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131)
	org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:537)
	org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
	org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:647)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:598)
	org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:661)
	org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:517)
	org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:458)
	org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
	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)

产生原因：Spring 项目的 JAVA编译器（JDK）版本与 Spring3.X 不兼容；
解决方法：需要将 WEB 项目的 Java编译器（JDK）版本改为1.7及以下版本，因为 Spring 3.X 支持最高 JDK 1.7 版本的，Spring 4.X 最低支持 JDK 1.6；

5. javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint ‘javax.validation.constraints.Size’ validating type ‘java.util.Date’.

产生原因：在相关的 POJO 的校验中加入的校验注解与其被校验的成员变量的类型不统一；
解决方法：@NotEmpty 只能用于对 String 、Collection 或 array 字段的注解，其他的就不行；可以换为@NotNull，因为其可以用于任意类型。

6. java.lang.AbstractMethodError: org.mybatis.spring.transaction.SpringManagedTransaction.getTimeout()Ljava/lang/Integer;

产生原因：错误原因是 mybatis-spring 包版本问题，因为我的Spring 是 4.X 版本的， Mybatis 是 3.X ，整合包是1.2.5 版本；
解决方法：，解决方案有三种，第一种是更换 Spring 版本，第二种是更换 Mybatis 版本，第三种是升级整合包，建议采用第三种方法。