jdbcTemplate.batchUpdate for list of inserts doesn't work - spring

Question

I'm out of nerves cells and I really need your help guys.
For some reason I can't get list of answers inserted to database
I use jdbcTemplate to do that and my code looks like this
public void insertVastaukset(List<Vastaus> vastaukset) {
final String sql = "insert into vastaus (kysymysID, vastausteksti) values(?,?)";
getJdbcTemplate().batchUpdate(sql,
new BatchPreparedStatementSetter() {
#Override
public void setValues(PreparedStatement ps, int i)
throws SQLException {
Vastaus vastaus = vastaukset.get(i);
ps.setInt(1, vastaus.getKysymysID());
ps.setString(2, vastaus.getVastausteksti());
}
#Override
public int getBatchSize() {
return vastaukset.size();
}
});}
And for some reason the program gives no error! When i tried it couple days ago it gave me null pointer, but now its fixed but still no inserts are created into database. Help me please, Thank you very much!

Answer 1

Use the below catch block to examine the exceptions
int[] updateCounts;
try {
updateCounts = getJdbcTemplate().batchUpdate("insert into test123 (id, value) values (?,?)",
new BatchPreparedStatementSetter() {
//// YOUR CODE HERE
});
}
catch (Exception sqle) {
Throwable s2 = sqle;
System.out.println("=============v"+s2.getClass().getName()+"=====================");
while (s2!=null) {
s2.printStackTrace();
s2 = s2.getCause();
if(s2 instanceof java.sql.BatchUpdateException) {
System.out.println("======================^^^^^^======================");
((java.sql.BatchUpdateException) s2).getNextException().printStackTrace();
}
}
throw sqle;
}