代码：

try {//E:\iwater\src\main\resources\config\custom\area-data.js
            FileReader fr = new FileReader("E:/iwater/src/main/resources/config/custom/area-data.js");
            BufferedReader br = new BufferedReader(fr);
            StringBuilder sb = new StringBuilder();
            String line = null;
            while (null != (line = br.readLine())){
                sb.append(line);
            }
            if (br != null) br.close();

            String jsonData = sb.substring(sb.indexOf("{"), sb.lastIndexOf("}")+1);
            jsonData = jsonData.replaceAll(" ", "");
            jsonData = jsonData.replaceAll("'","\"");
            System.out.println(jsonData);

            //String preJsonData = jsonData.substring(jsonData.indexOf("86"), jsonData.lastIndexOf("110000")-1);
            //System.out.println(preJsonData);
            String sufJsonData = jsonData.substring(jsonData.lastIndexOf("110000"), jsonData.lastIndexOf("}"));
            sufJsonData = "{" + sufJsonData + "}";
            System.out.println(sufJsonData);

            System.out.println(sufJsonData);
            NutMap map = Json.fromJson(NutMap.class, sufJsonData);
            System.out.println(map.size());

        } catch (Exception e) {
            e.printStackTrace();
        }

错误行：

NutMap map = Json.fromJson(NutMap.class, sufJsonData);

错误信息：

org.nutz.json.JsonException: Unexpect EOF
	at org.nutz.json.impl.JsonTokenScan.nextChar(JsonCompileImplV2.java:363)
	at org.nutz.json.impl.JsonTokenScan.skipComment(JsonCompileImplV2.java:140)
	at org.nutz.json.impl.JsonTokenScan._nextToken(JsonCompileImplV2.java:85)
	at org.nutz.json.impl.JsonTokenScan.nextToken(JsonCompileImplV2.java:132)
	at org.nutz.json.impl.JsonTokenScan.readMap(JsonCompileImplV2.java:175)
	at org.nutz.json.impl.JsonTokenScan.read(JsonCompileImplV2.java:343)
	at org.nutz.json.impl.JsonCompileImplV2.parse(JsonCompileImplV2.java:26)
	at org.nutz.json.Json.fromJson(Json.java:42)
	at org.nutz.json.Json.parse(Json.java:77)
	at org.nutz.json.Json.fromJson(Json.java:58)
	at org.nutz.json.Json.fromJson(Json.java:163)
	at cn.nutzwk.copy_area.CopyAreaTest.main(CopyAreaTest.java:43)

请问怎么解决