I am creating webapplication using JSF2.0 where in mysql, I am storing images using datatype as MEDIUMBLOB
.
To insert values, I am using PreparedStatement as shown below.
PreparedStatement psmnt = con.prepareStatement("INSERT INTO sketchesSG002003 (userid, imageTitle, imageData, drawingComments) VALUES (?,?,?,?)");
psmnt.setLong(1, personalInfoId);
psmnt.setString(2, sketchesSG002003Title);
try {
String fileName = FilenameUtils.getName(sketchesSG002003ImageUpload.getName());
File image = new File(fileName);
InputStream fis = sketchesSG002003ImageUpload.getInputStream();
psmnt.setBinaryStream(3, fis, (int) sketchesSG002003ImageUpload.getSize());
} catch (Exception e) {
psmnt.setBinaryStream(3, null);
}
psmnt.setString(4, sketchesSG002003Comments);
i = psmnt.executeUpdate();
However I am getting error as
java.lang.AbstractMethodError: com.mysql.jdbc.PreparedStatement.setBinaryStream(ILjava/io/InputStream;)V
Some part of Stacktrace is
javax.faces.el.EvaluationException: java.lang.AbstractMethodError: com.mysql.jdbc.PreparedStatement.setBinaryStream(ILjava/io/InputStream;)V
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
I believe above error is for statement psmnt.setBinaryStream(3, null);
My question is how can I set binary data as Null or Nothing?
What is going wrong these days? I get solution after I ask question :(
psmnt.setNull(3, java.sql.Types.BLOB);
did the trick.
来源:https://stackoverflow.com/questions/11496922/setting-blob-to-null-using-preparedstatement