java.nio.file.ProviderNotFoundException：找不到提供程序

时间：2020-09-28 13:20:26

标签： java spring spring-boot java.nio.file

我没有找到该异常提供程序，但是不知道如何解决它。这是我的代码：

 @Bean
    public FileSystem fileSystem() {
        try {
            Path path = Paths.get("C:/Users/home/Desktop/mydir");
            FileSystem ext2fs = FileSystems.newFileSystem(path, Thread.currentThread().getContextClassLoader());
            
            return ext2fs;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

有人知道什么可能是问题以及如何解决。 这个想法是我有这个文件系统用的bean，以后将用于crud操作，但是这个bean是因为如果我以后想更改存储，那很容易在这个bean中进行更改，例如，如果我想使用谷歌作为存储而不是本地存储或类似的东西只是用这种方法设置它。我正在使用Spring Boot 2.3.3

更新-完全例外 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fileSystem' defined in class path resource [Config.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [java.nio.file.FileSystem]: Factory method 'fileSystem' threw exception; nested exception is java.nio.file.ProviderNotFoundException: Provider not found
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
    at Application.main(Application.java:10) [classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [java.nio.file.FileSystem]: Factory method 'fileSystem' threw exception; nested exception is java.nio.file.ProviderNotFoundException: Provider not found
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    ... 20 common frames omitted
Caused by: java.nio.file.ProviderNotFoundException: Provider not found
    at java.nio.file.FileSystems.newFileSystem(FileSystems.java:407) ~[na:1.8.0_251]
    at Config.fileSystem(FileSystemConfig.java:23) ~[classes/:na]
    at Config$$EnhancerBySpringCGLIB$$53bc71a0.CGLIB$fileSystem$0(<generated>) ~[classes/:na]
    at Config$$EnhancerBySpringCGLIB$$53bc71a0$$FastClassBySpringCGLIB$$4ee51dad.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at Config$$EnhancerBySpringCGLIB$$53bc71a0.fileSystem(<generated>) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_251]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_251]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_251]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_251]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    ... 21 common frames omitted

新更新 

Caused by: java.lang.IllegalArgumentException: Path component should be '/'
    at sun.nio.fs.WindowsFileSystemProvider.checkUri(WindowsFileSystemProvider.java:69) ~[na:1.8.0_251]
    at sun.nio.fs.WindowsFileSystemProvider.getFileSystem(WindowsFileSystemProvider.java:86) ~[na:1.8.0_251]
    at java.nio.file.FileSystems.getFileSystem(FileSystems.java:221) ~[na:1.8.0_251]
    at FileSystemConfig.fileSystem(FileSystemConfig.java:23) ~[classes/:na]
    at FileSystemConfig$$EnhancerBySpringCGLIB$$53bc71a0.CGLIB$fileSystem$0(<generated>) ~[classes/:na]
    at FileSystemConfig$$EnhancerBySpringCGLIB$$53bc71a0$$FastClassBySpringCGLIB$$4ee51dad.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    at FileSystemConfig$$EnhancerBySpringCGLIB$$53bc71a0.fileSystem(<generated>) ~[classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_251]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_251]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_251]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_251]
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
    ... 21 common frames omitted

1 个答案:

答案 0 :(得分：1)

您选择了以类对象作为第二个参数的newFileSystem（）方法。第二个参数必须是文件系统提供程序的类，在这种情况下不是。请只使用类似的内容：

@Bean
public FileSystem fileSystem() {
    Path path = Paths.get(URI.create("file:/C:/Users/home/Desktop/mydir"));
    final URI uri = URI.create("file:" + path.toUri().getPath());
    FileSystem ext2fs = FileSystems.getFileSystem(uri);

    return ext2fs;
}
相关问题
最新问题