SpringBoot报错（六）热部署报错_at org.springframework.boot.devtools.restart.resta

好了，今天又开始了新的一天的报错，这才周一，重新配置了一次环境，报了一个小错误，错误如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'classPathFileSystemWatcher' defined in class path resource [org/springframework/boot/devtools/autoconfigure/LocalDevToolsAutoConfiguration$RestartConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.devtools.classpath.ClassPathFileSystemWatcher]: Factory method 'classPathFileSystemWatcher' threw exception; nested exception is java.lang.IllegalArgumentException: Folder 'E:\WJ\projects\graduation\graduation\templates' must exist and must be a directory
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
	at com.resolver.StartMain.main(StartMain.java:45)
	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.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.devtools.classpath.ClassPathFileSystemWatcher]: Factory method 'classPathFileSystemWatcher' threw exception; nested exception is java.lang.IllegalArgumentException: Folder 'E:\WJ\projects\graduation\graduation\templates' must exist and must be a directory
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
	... 23 common frames omitted
Caused by: java.lang.IllegalArgumentException: Folder 'E:\WJ\projects\graduation\graduation\templates' must exist and must be a directory
	at org.springframework.util.Assert.isTrue(Assert.java:92)
	at org.springframework.boot.devtools.filewatch.FileSystemWatcher.addSourceFolder(FileSystemWatcher.java:124)
	at org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration$RestartConfiguration.newFileSystemWatcher(LocalDevToolsAutoConfiguration.java:160)
	at org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration$RestartConfiguration.access$000(LocalDevToolsAutoConfiguration.java:102)
	at org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration$RestartConfiguration$1.getFileSystemWatcher(LocalDevToolsAutoConfiguration.java:143)
	at org.springframework.boot.devtools.classpath.ClassPathFileSystemWatcher.<init>(ClassPathFileSystemWatcher.java:61)
	at org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration$RestartConfiguration.classPathFileSystemWatcher(LocalDevToolsAutoConfiguration.java:120)
	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.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	... 24 common frames omitted

最后找了很久，找到了热部署报错的原因。

修改成这样就没有在报错了

我开始的时候，additional-paths写了两个值，所以就报错了