01 2022 档案
摘要：public class filename { public static void main(String[] args) { File file = new File("/Users/pankaj/book.txt"); System.out.println("File extension is
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摘要：var jsons={北京市:[116.46,39.92], 北京:[116.46,39.92], 平谷区:[117.1,40.13], 密云区:[116.85,40.37], 顺义区:[116.65,40.13], 通州区:[116.66,39.91], 怀柔区:[116.62,40.32], 大
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摘要：后端： @GetMapping("/down") public void fileinfo(String path,HttpServletRequest request, HttpServletResponse response) { // 其余处理略 InputStream inputStream
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摘要：接口类（CodeEnum）： public interface CodeEnum { //状态码 public int getCode(); //返回信息 public String getMessage(); } 实现类（CodeEnumEntity）： public enum CodeEnumE
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