BLOB 转 String JAVA

public static String BLOB2String(Object o) throws SQLException{
		String str = null;
		byte[] inbyte=null;
		if(o instanceof Blob){
			Blob blob = (Blob) o;
	        if (blob != null) {
	            inbyte = blob.getBytes(1, (int) blob.length());
	        }
			str =new String (inbyte);
		}
		return str;
	}