getResource("")这个方法可以用于查看当前目录得到的路径中（file:/E:/Program%20Files/works/source/trunk/glory/mars/build/classes/artifacts/app/exploded/app-1.0-SNAPSHOT.war/WEB-INF/classes/area.json）包含“file:/”需要手动去掉；而且要注意文件目录不能有空格，否则：E:/Program%20Files 是找不到文件目录的；this.getClass().getResource("")和this.getClass().getClassloader().getResource("") 区别？？第一个是类路径下（即 class 根目录）第二个目录是 class目录里面当前类的包路径；参考下图
得到推荐写法：
this.getClass().getClassLoader().getResource("文件名.文件类型")
1 public ResponseBean getAreas() {
2 String path = getClass().getClassLoader().getResource("area.json").toString();
3 path = path.replace("\\", "/");
4 if (path.contains(":")) {
5 //path = path.substring(6);// 1 path = path.replace("file:/","");// 2
6 }
7 JSONArray jsonArray = null;
8 try {
9 String input = FileUtils.readFileToString(new File(path), "UTF-8");
10 JSONObject jsonObject = JSONObject.fromObject(input);
11 if (jsonObject != null) {
12 jsonArray = jsonObject.getJSONArray("list");
13 }
14 } catch (Exception e) {
15 e.printStackTrace();
16 jsonArray = null;
17 }
18 return new ResponseBean(jsonArray);
19 }
area.json文件放入resources资源目录中：
area.json数据如下（参考）
{"list":[{"全国":[{"id":0,"title":"全国"}]},{"华东":[{"id":31892,"title":"上海"},{"id":32556,"title":"山东"},{"id":31913,"title":"江苏"},{"id":32054,"title":"浙江"},{"id":32170,"title":"安徽"},{"id":32430,"title":"江西"}]},{"华南":[{"id":32325,"title":"福建"},{"id":33543,"title":"海南"},{"id":33224,"title":"广东"},{"id":34669,"title":"台湾"},{"id":34689,"title":"香港"},{"id":34691,"title":"澳门"}]},{"华北":[{"id":31002,"title":"北京"},{"id":31022,"title":"天津"},{"id":31043,"title":"河北"},{"id":31244,"title":"山西"},{"id":31387,"title":"内蒙古"}]},{"华中":[{"id":31043,"title":"河北"},{"id":32737,"title":"河南"},{"id":32939,"title":"湖北"},{"id":33071,"title":"湖南"}]},{"东北":[{"id":31516,"title":"辽宁"},{"id":31649,"title":"吉林"},{"id":31733,"title":"黑龙江"}]},{"西北":[{"id":34199,"title":"陕西"},{"id":34508,"title":"宁夏"},{"id":34329,"title":"甘肃"},{"id":34444,"title":"青海"},{"id":34541,"title":"新疆"}]},{"西南":[{"id":33400,"title":"广西"},{"id":33613,"title":"四川"},{"id":33839,"title":"贵州"},{"id":33947,"title":"云南"},{"id":34110,"title":"西藏"},{"id":33569,"title":"重庆"}]}]}
来源：https://www.cnblogs.com/dwb91/p/6726823.html