Reading file available in resources folder with SpringBoot

问题

I am going to read a file available in resources folder in my Springboot application. I have used ResourceLoader to do it. But I get a FileNotFoundException when I try to execute my application.

Error creating bean with name 'demoController': Invocation of init method failed; nested exception is java.io.FileNotFoundException: class path resource [schema.graphql] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/home/dilan/Projects/demo/target/demo.jar!/BOOT-INF/classes!/schema.graphql
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:137) ~[spring-beans-4.3.9.RELEASE.jar!/:4.3.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:409) ~[spring-beans-4.3.9.RELEASE.jar!/:4.3.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620) ~[spring-beans-4.3.9.RELEASE.jar!/:4.3.9.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.9.RELEASE.jar!/:4.3.9.RELEASE]

Below is my Code

 @Autowired
private ResourceLoader resourceLoader;

final Resource fileResource = resourceLoader.getResource("classpath:schema.graphql");
File schemaFile = fileResource.getFile();
TypeDefinitionRegistry definitionRegistry = new SchemaParser().parse(schemaFile);
RuntimeWiring wiring = buildRuntimeWiring();

Can anybody please help me to sort this out

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回答1:

You could use ClassPathResource

Smth like this :

InputStream inputStream = new ClassPathResource("schema.graphql").getInputStream();

Or

File file = new ClassPathResource("schema.graphql").getFile();

回答2:

try to use the code below to access files in ressources folder with spring boot

 File file = new ClassPathResource("schema.graphql").getFile();

来源：https://stackoverflow.com/questions/46563392/reading-file-available-in-resources-folder-with-springboot