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how to retrieve the blob column data from table? [message #497815]

Mon, 07 March 2011 06:11

shankar123
Messages: 3
Registered: March 2011
Location: INDIA

Junior Member

I use the oracle 10g database.I am trying to insert and retrive the image.Inserting an image is done.but while retrieving an image iam getting an run time exception in java "java.sql.sqlexception:general error".i am not able to understand this.
The code to insert the image is
FileInputStream fi=new FileInputStream(f);
int size = fi.available();
System.out.println("j"+size);
byte b1[] = new byte[size];
i=fi.read(b1,0,size);
System.out.println("i"+i);
st.executeUpdate("insert into image1 values('b1',"+k+")");
when i am retrieving the image i tried like this
ResultSet rs=st.executeQuery("select imagecolumn from tablename");
here iam getting an exception as i named above.

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Re: how to retrieve the blob column data from table? [message #497826 is a reply to message #497815]

Mon, 07 March 2011 06:55

Michel Cadot
Messages: 68757
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Copy and paste the error code and error you get.

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Regards
Michel

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Re: how to retrieve the blob column data from table? [message #497828 is a reply to message #497815]

Mon, 07 March 2011 06:57

ThomasG
Messages: 3212
Registered: April 2005
Location: Heilbronn, Germany

Senior Member

Code: [Select all] [Show/ hide]

st.executeUpdate("insert into image1 values('b1',"+k+")");

What is this "k" you insert here? You should be inserting with a bind variable you set with setBlob

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Re: how to retrieve the blob column data from table? [message #498204 is a reply to message #497828]

Wed, 09 March 2011 04:20

shankar123
Messages: 3
Registered: March 2011
Location: INDIA

Junior Member

the exception that i got at resultset is
java.sql.sqlexception:general error

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Re: how to retrieve the blob column data from table? [message #498208 is a reply to message #497828]

Wed, 09 March 2011 04:22

shankar123
Messages: 3
Registered: March 2011
Location: INDIA

Junior Member

you dont bother about the k variable.I can take care of that.
please tell me about the problem i have at resultset. I am getting exception there?

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