配置文件本地可以加载，正式环境的jar包里面找不到

超、凢脫俗 2022-10-18 01:35 15阅读 0赞

因为是工作中遇到的问题，所以在自己电脑写了个简单例子还原记录一下

只在本地能load，不能在环境上load的代码写法：

import org.springframework.core.io.ClassPathResource;
    
    import java.io.File;
    import java.io.IOException;
    public static void main(String[] args) {
            try {
                ClassPathResource classPathResource = new ClassPathResource("config/account_status.yml");//该路径基于src/resources
                File file = classPathResource.getFile();
                System.out.println(file.getName());
            } catch (IOException e) {
                System.out.println("file can't find");
                e.printStackTrace();
            }
    
        }

问题出现原因：这是因为打包后Spring试图访问文件系统路径，但是无法访问jar中的路径

解决方法，将以上代码改成如下

import org.apache.commons.io.FileUtils;
    import org.springframework.core.io.ClassPathResource;
    
    import java.io.File;
    import java.io.IOException;
    import java.io.InputStream;
    
    public class TestFileLoadIssue {
        public static void main(String[] args) {
            try {
                ClassPathResource classPathResource = new ClassPathResource("config/account_status.yml");
                InputStream inputStream = classPathResource.getInputStream();
                File file = new File(classPathResource.getFilename());
                FileUtils.copyInputStreamToFile(inputStream,file);
                System.out.println(file.getName());
            } catch (IOException e) {
                System.out.println("file can't find");
                e.printStackTrace();
            }
        }
    
    }

can check here:[https://smarterco.de/java-load-file-from-classpath-in-spring-boot/][https_smarterco.de_java-load-file-from-classpath-in-spring-boot]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bl9vZl9SYWlueQ_size_16_color_FFFFFF_t_70][]

[https_smarterco.de_java-load-file-from-classpath-in-spring-boot]: https://smarterco.de/java-load-file-from-classpath-in-spring-boot/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L1N1bl9vZl9SYWlueQ_size_16_color_FFFFFF_t_70]: /images/20221014/b37da15cfde24894b1cff35485fbd5ff.png