• Java读取resources目录下面的文件

Base64.Encoder encoder = Base64.getEncoder();

        byte[] bytes = Files.toByteArray(new File("src/main/resources/kuochan.com/ios_prod.p12"));
        String base64Str = encoder.encodeToString(bytes);
        System.out.println(base64Str);

• Java读取同级目录下面的resources目下的文件

Base64.Encoder encoder = Base64.getEncoder();

        byte[] bytes = Files.toByteArray(new File(System.getProperty("user.dir") + "/push-service/src/main/resources/kuochan.com/ios_dev.p12"));
        String base64Str = encoder.encodeToString(bytes);
        System.out.println(System.getProperty("user.dir"));

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