将数据库中查出的Clob类型转换为String类型

 Clob clob = rs.getClob("DATA");

 String desc = null;

 Reader inStream = clob.getCharacterStream();

 long length = (clob == null) ? 0 : clob.length();

 char[] c = new char[(int) length];

 try {

    inStream.read(c);

    desc = new String(c);

    inStream.close();

 } catch (IOException e) {

     e.printStrackTrace();

 }