oracle.sql.Clob类型转换成String类型

public String ClobToString(Clob clob) throws SQLException, IOException {
    String reString = "";
    Reader is = clob.getCharacterStream();// 得到流
    BufferedReader br = new BufferedReader(is);
    String s = br.readLine();
    StringBuffer sb = new StringBuffer();
    while (s != null) {// 执行循环将字符串全部取出付值给StringBuffer由StringBuffer转成STRING
        sb.append(s);
        s = br.readLine();
    }
    reString = sb.toString();
    return reString;
}

/**
 * Oracle的Clob转成String
 * @param clob
 * @return
 */
public String oracleClobToString(CLOB clob){
    try {
        return (clob == null ? null : clob.getSubString(1, (int)clob.length()));
    } catch (SQLException e) {
        e.printStackTrace();
    }
    return null;
}