spring boot读取本地文件

File file = ResourceUtils.getFile("classpath:face/1112.txt");
            InputStream inputStream = new FileInputStream(file);
            InputStreamReader treader =
                    new InputStreamReader(inputStream);
            BufferedReader tBff = new  BufferedReader(treader);
            String FileReaderstr = tBff.readLine();
            tBff.close();

ResourceUril读取了文件地址  ，字符流读取到文件数据

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上面这种在idea上可以但是放到服务器上会失效

下面这种才是干货：

ClassPathResource classPathResource = new ClassPathResource("face/1112.txt");
            InputStream inputStream = classPathResource.getInputStream();
            InputStreamReader treader =
                    new InputStreamReader(inputStream);
            BufferedReader tBff = new BufferedReader(treader);
            String FileReaderstr = tBff.readLine();
            tBff.close();