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  • 项目windows运行正常,而Linux上运行报错: class path resource [kwhRules.json] cannot be resolved to absolute file path because it does not reside in the file system

    java.io.FileNotFoundException:
    class path resource [kwhRules.json]
    cannot be resolved to absolute file path because it does not reside in the file system:
    jar:file:/root/app/target/app.jar!/BOOT-INF/classes!/kwhRules.json

    更改前代码:

    void initRules() throws IOException {
           var file = ResourceUtils.getFile("classpath:kwhRules.json");var ob = new ObjectMapper();
            this.rawRules = ob.readValue(file, Map.class);
    }

    更改后代码:

    void initRules() throws IOException {var classPathResource = new ClassPathResource("kwhRules.json");
            var ob = new ObjectMapper();
            this.rawRules = ob.readValue(classPathResource.getInputStream(), Map.class);
    }

    错误原因:

     ResourceUtils.getFile("classpath:config.json") 

    个方法只能从类路径下获取文件,无法从jar包中获取.  打成jar包后发布到linuxs系统,就报错找不到文件了.

    ClassPathResource classPathResource = new ClassPathResource("config.json"); 可以从jar包获取文件.

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  • 原文地址:https://www.cnblogs.com/smileblogs/p/12360576.html
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