Loading a CSV file with Umlaut characters (àáä)

Question

Hai,
We are uploading a CSV file though a Custom JSP page built based on Oracle JTF framework.
The JSP page is loading the data into FND_LOBS table using JTF object, oracle.apps.jtf.amv.ServletUploader.
The CSV file in the FND_LOBS table stored properly with the umlaut characters.
Now the JSP page invokes a Java object to read and parse the data. We are selecting the data first into BLOB object and then using the Input Stream Reader to get the data.
Here is the sample code:
oraclepreparedstatement = (OraclePreparedStatement)oracleconnection.prepareStatement(" SELECT FILE_DATA FROM FND_LOBS WHERE FILE_ID = :1 ");
oraclepreparedstatement.defineColumnType(1, 2004);
oraclepreparedstatement.setLong(1, <file id>);
oracleresultset = (OracleResultSet)oraclepreparedstatement.executeQuery();
blob = (BLOB)oracleresultset.getObject(1);
InputStreamReader inputstreamreader = new InputStreamReader(blob.getBinaryStream());
lineReader = new LineNumberReader(inputstreamreader )
lCSVLine = lineReader.readLine();
I tried printing the character set used by the InputStreamReader and it returned as ASCII
Now I tried setting the different character sets to read Umlaut characters(german chars) but nothing has worked.
InputStreamReader inputstreamreader = new InputStreamReader(blob.getBinaryStream(),"UTF-8");
Can someone please let me know where and how to set the Character Set to accept the Umlaut characters like àáä?
Thanks,
Anji

Answer 1

Thank you for the quick response.
Requirement:
I need to retrive the BLOB object with umlaut characters from database, parse the data with comma delimeter into strings and store in database.
I am viewing the umlaut data from the database table using TOAD utility tool.
I tried the same code example provided above but it is not working as expected. The umlaut characters are translated to 'ýýý.
CODE EXAMPLE:
Input:
test_umlaut (sno NUMBER, col1 VARCHAR2(100), col3 BLOB);
insert into test_umlaut(sno,col3) values(200, utl_raw.cast_to_raw('äöüÄÖÜ' ))
Note: Verified that the database is showing the umlaut characters on selecting the col3 and storing in a flat file
--- code
OraclePreparedStatement oraclepreparedstatement10 = null;
OracleResultSet rs = null;
oraclepreparedstatement10 = (OraclePreparedStatement)oracleconnection.prepareStatement(" SELECT col3 FROM test_umlaut WHERE sno = 200 ");
oraclepreparedstatement10.defineColumnType(1, 2004);
rs = (OracleResultSet)oraclepreparedstatement10.executeQuery();
while(rs.next()) {
BLOB b = (BLOB)rs.getObject(1);
InputStream is = b.getBinaryStream();
InputStreamReader r = new InputStreamReader(is,"utf8");
BufferedReader br = new BufferedReader(r);
String line;
while( (line = br.readLine()) != null) {
     System.out.println(line);
     OraclePreparedStatement oraclepreparedstatement12 = null;
     OracleResultSet oracleresultset12 = null;
     oraclepreparedstatement12 = (OraclePreparedStatement)oracleconnection.prepareStatement(" INSERT INTO test_umlaut(sno,col1) VALUES (300,?) ");
     oraclepreparedstatement12.setString(1,line);
     oraclepreparedstatement12.executeUpdate();
br.close();
r.close();
is.close();
Output: Verified the output from the database table which is inserted in the loop above.
select col1 from test_umlaut where sno=300
ýýý