java读取文件夹下文件及txt内容

public class PositionController {     // 读取txt内容     public static String txt2String(File file) {         StringBuilder result = new StringBuilder();         try {             BufferedReader br = new BufferedReader(new FileReader(file));// 构造一个BufferedReader类来读取文件             String s = null;             while ((s = br.readLine()) != null) {// 使用readLine方法，一次读一行                 result.append(System.lineSeparator() + s);             }             br.close();         } catch (Exception e) {             e.printStackTrace();         }         return result.toString();     }
    // 读取文件夹下所有文件名     public static List getFile(File file) {         List listLocal = new ArrayList<>();         if (file != null) {             File[] f = file.listFiles();             if (f != null) {                 for (int i = 0; i < f.length; i++) {                     getFile(f[i]);                     listLocal.add(f[i]);                 }             } else {                 // System.out.println(file);             }         }         return listLocal;     }
    public String getTxt(ModelMap map) throws FileNotFoundException {             // 文件夹下每一个txt名             String path = "D:/wode/TestReallyData/txt2/txt_all/";             File all = new File(path);             //将全部txt存到list中             List allPath = getFile(all);              // 读取txt内容 并转换成List              for(int i = 0 ;i <allPath.size();i++){                 File file = new File(i);                 String content = txt2String(file);              }     　　} }

 

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