从一个文件里面读取一个txt文件

本人基础不好 ，所以还是收集下比较好，不要见笑

private String textName = "json.txt";

outPath = Environment.getExternalStorageDirectory().getPath() + "/Android/data/copyzip/";

/**

* 吧json.txt读出来 读成一个String
 *
 * */
try {
    StringBuffer sb = new StringBuffer();
    File file = new File(outPath + "/" + textName);
    BufferedReader br = new BufferedReader(new FileReader(file));
    String line = "";
    while ((line = br.readLine()) != null) {
        sb.append(line);
    }
    jsonText = sb.toString();
    br.close();
} catch (IOException e) {
    e.printStackTrace();
}