Java從本地讀取json文件

public static String getDatafromFile(String fileName) {  
        
        String Path="src/" + fileName+ ".json";  
        BufferedReader reader = null;  
        String laststr = "";  
        try {  
            FileInputStream fileInputStream = new FileInputStream(Path);  
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");  
            reader = new BufferedReader(inputStreamReader);  
            String tempString = null;  
            while ((tempString = reader.readLine()) != null) {  
                laststr += tempString;  
            }  
            reader.close();  
        } catch (IOException e) {  
            e.printStackTrace();  
        } finally {  
            if (reader != null) {  
                try {  
                    reader.close();  
                } catch (IOException e) {  
                    e.printStackTrace();  
                }  
            }  
        }  
        return laststr;  
    }