Clob clob = rs.getClob("remark");//Java.sql.Clob
String detailinfo = "";
if(clob != null){
　　detailinfo = clob.getSubString((long)1,(int)clob.length());
}

Clob clob = rs.getClob("remark");//java.sql.Clob
int i = 0;
if(clob != null){
　　InputStream input = clob.getAsciiStream();
   int len = (int)clob.length();
   byte by[] = new byte[len];
   while(-1 != (i = input.read(by, 0, by.length))){
   　　input.read(by, 0, i);
   }
   detailinfo = new String(by, "utf-8");
}

Clob clob = rs.getClob("remark");//java.sql.Clob
String value="";
String line="";
if(clob!=null){
　　Reader reader=((Oracle.sql.CLOB)clob).getCharacterStream();
   BufferedReader br=new BufferedReader(reader);
   while((line=br.readLine())!=null){
   　　value += line + "\r\n";
   }
}