java中将file文件对象转string

/**
* 读取txt文件的内容
*
* @param file 想要读取的文件对象
* @return 返回文件内容
*/
public static String txt2String(File file)
{
String result = "";
try
{
// 构造一个BufferedReader类来读取文件
// BufferedReader br = new BufferedReader(new FileReader(file));
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file.getPath()), "GBK"));
String s = null;
while ((s = br.readLine()) != null)
{// 使用readLine方法，一次读一行
result = result + "\n" + s;
}
br.close();
}
catch (Exception e)
{
e.printStackTrace();
}
// System.out.println(result);
return result;
}