Spring bean在启动服务器时抛出异常

Question

我正在处理一个项目，该项目(我想说是"随机的"，因为它有时会启动，在服务器重新启动后，它会毫无理由地抛出异常)给bean转换服务带来了问题。

Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'conversionService' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]: Cannot create inner bean 'project.formatter.DateFormatter#3636796b' of type [project.formatter.DateFormatter] while setting bean property 'formatters' with key [0]; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedSet(BeanDefinitionValueResolver.java:394)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:161)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:818)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4772)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1351)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
... 25 more
Caused by: java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1295)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1147)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1396)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1343)
... 27 more

然后servlet上的异常：

Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'conversionService' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]: Cannot create inner bean 'project.formatter.DateFormatter#3636796b' of type [project.formatter.DateFormatter] while setting bean property 'formatters' with key [0]; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedSet(BeanDefinitionValueResolver.java:394)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:161)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:818)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4772)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1351)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
... 25 more
Caused by: java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1295)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1147)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1396)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1343)
... 27 more
gen 20, 2017 10:05:42 AM org.apache.catalina.core.StandardContext list enerStart
GRAVE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'conversionService' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]: Cannot create inner bean 'project.formatter.DateFormatter#3636796b' of type [project.formatter.DateFormatter] while setting bean property 'formatters' with key [0]; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedSet(BeanDefinitionValueResolver.java:394)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:161)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:201)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:818)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4772)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [project.formatter.DateFormatter] for bean with name 'project.formatter.DateFormatter#3636796b' defined in ServletContext resource [/WEB-INF/config/springmvc-config.xml]; nested exception is java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1351)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
... 25 more
Caused by: java.lang.ClassNotFoundException: project.formatter.DateFormatter
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1295)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1147)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1396)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1343)
... 27 more
gen 20, 2017 10:05:42 AM org.apache.catalina.core.StandardContext startInternal
GRAVE: Error listenerStart
gen 20, 2017 10:05:43 AM org.apache.catalina.core.StandardContext startInternal
GRAVE: Context [/ProjectWorkMaven] startup failed due to previous errors

它似乎找不到类，但该类实际上在project.formatter.DateFormatter下

这是spring-mvcconfig.xmlbean：

<bean id="conversionService"
class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="formatters">
<set>
<bean class="project.formatter.DateFormatter">
<constructor-arg type="java.lang.String" value="dd/MM/yyyy" />
</bean>
</set>
</property>
</bean>

这里的DateFormatter类：

package project.formatter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import org.springframework.format.Formatter;
public class DateFormatter implements Formatter<Date> {
private String datePattern;
private SimpleDateFormat dateFormat;
public DateFormatter(String datePattern) {
this.datePattern = datePattern;
dateFormat = new SimpleDateFormat(datePattern);
dateFormat.setLenient(false);
}

public String print(Date date, Locale locale) {
return dateFormat.format(date);
}

public Date parse(String s, Locale locale) throws ParseException {
try {
return dateFormat.parse(s);
} catch (ParseException e) {
// the error message will be displayed when using <form:errors>
throw new IllegalArgumentException(
"invalid date format. Please use this pattern""
+ datePattern + """);
}
}
}

它给其他与我一起工作的人带来了同样的错误，但他们只需要做maven clean来解决问题，因为我不使用这种方法。我做了一次清理，然后重新启动服务器，我得到了同样的错误，唯一的方法是从svn重新进行签出，它工作了一段时间，然后又开始给我这个问题。我不在上那个课，我也不编辑springmvc-config.xml我不知道该如何解决这个问题。我检查了springmvc-config，web.xml，我还应该去哪里尝试解决这个问题？谢谢大家的帮助。

编辑：它似乎会给其他所有bean带来错误。我评论了conversionServicebean，它没有给出更多的异常，并在bean dataSource上抛出异常，这样评论了bean，它在spring安全bean上发送错误。我不认为由于对这些豆子的依赖，我应该去哪里？直到两天前，它一切都很好，项目的配置没有任何更改，现在我尝试在虚拟机上签出包。第2版：它在虚拟机上也不起作用。我不明白为什么会出现这样的问题。我也试着删除这个项目并重新签出它，但它仍然不起作用，同样的问题。如果你们中的任何人能建议我怎么看，那就太好了，我团队中没有其他人有这个问题。

Answer 1

确保跟随。

1)FormattingConversionServiceFactoryBean.java必须具有名为formatters、类型为project.formatter.DateFormatter的属性。

2) 重新生成项目，然后重新部署到服务器。

注意：只有当服务器找不到yourClass.class时，才会出现java.lang.ClassNotFoundException。

Answer 2

我解决了从服务器中删除资源，在服务器上进行清理，然后在项目上进行清理的问题，我重建了它，并在服务器上重新部署了它。我仍然猜不出为什么会出现这些问题。谢谢你的帮助。