java将Oracle中的clob转为String类型

//oracle.sql.Clob类型转换成String类型
public String ClobToString(Clob clob) {
String reString = "";
Reader is = null;
try {
is = clob.getCharacterStream();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// 得到流
BufferedReader br = new BufferedReader(is);
String s = null;
try {
s = br.readLine();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
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);
try {
s = br.readLine();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
reString = sb.toString();
return reString;
}