JAVA读取文本文件内容实例代码

public static String readFileContent(String fileName) {
  File file = new File(fileName);
  BufferedReader reader = null;
  StringBuffer sbf = new StringBuffer();
  try {
    reader = new BufferedReader(new FileReader(file));
    String tempStr;
    while ((tempStr = reader.readLine()) != null) {
      sbf.append(tempStr);
    }
    reader.close();
    return sbf.toString();
  } catch (IOException e) {
    e.printStackTrace();
  } finally {
    if (reader != null) {
      try {
        reader.close();
      } catch (IOException e1) {
        e1.printStackTrace();
      }
    }
  }
  return sbf.toString();
}

public String readToString(String fileName) { 
    String encoding = "UTF-8"; 
    File file = new File(fileName); 
    Long filelength = file.length(); 
    byte[] filecontent = new byte[filelength.intValue()]; 
    try { 
      FileInputStream in = new FileInputStream(file); 
      in.read(filecontent); 
      in.close(); 
    } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
    } catch (IOException e) { 
      e.printStackTrace(); 
    } 
    try { 
      return new String(filecontent, encoding); 
    } catch (UnsupportedEncodingException e) { 
      System.err.println("The OS does not support " + encoding); 
      e.printStackTrace(); 
      return null; 
    } 
  }