Throwing MySQLSyntaxErrorException regarding syntax of SQL in Struts - mysql

Question

I am making a project on Struts framework.
I am getting a exception from server while inserting data in a table using SQL and I am unable to find the solution.
The error is as following:
javax.servlet.ServletException: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:
You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the
right syntax to use near ',,,,,,,'yes','yes',,,,'admin')' at line 1
My code which is generating the error is as following:
sql="Insert into field_visit_details (visit_date,block,village,flw_category,
flw_name,flw_contact_no,aware_zinc,
aware_ors,past_zinc,past_ors,qty_avail_zinc_ten,qty_avail_zinc_twe,qty_avail_zinc_syr,
qty_avail_ors,qty_disp_zinc_ten,qty_disp_zinc_twe,qty_disp_zinc_syr,qty_disp_ors,
stockout_zinc,stockout_ors,diar_cases_seen,diar_cases_reff,diar_deaths_less_than_five,
added_by)
values
('"+field_visit_date+"','"+block_row_one+"','"+village_row_one+"','"+flw_category_row_one
+"','"+flw_name_row_one+"','"+flw_contact_no_row_one+"','"+aware_zinc_row_one+"','"+
aware_ors_row_one+"','"+past_zinc_row_one+"','"+past_ors_row_one+"','"+
qty_avail_zinc_ten_row_one+"','"+qty_avail_zinc_twe_row_one+"','"+
qty_avail_zinc_syr_row_one+"','"+qty_avail_ors_row_one+"','"+qty_disp_zinc_ten_row_one
+"','"+qty_disp_zinc_twe_row_one+"','"+qty_disp_zinc_syr_row_one+"','"+
qty_disp_ors_row_one+"','"+stockout_zinc_row_one+"','"+stockout_ors_row_one+
"','"+diar_cases_seen_row_one+"','"+diar_cases_reff_row_one+"','"+diar_deaths_row_one
+"','"+loginid+"')";
System.out.println(sql);
int x=stmt.executeUpdate(sql);
if(x>0)
SUCCESS="admin";
Table Structure is as following:
CREATE TABLE IF NOT EXISTS `field_visit_details` (
`field_visit_id` int(11) NOT NULL auto_increment,
`visit_date` date NOT NULL,
`block` varchar(100) NOT NULL,
`village` varchar(100) NOT NULL,
`flw_category` varchar(45) NOT NULL,
`flw_name` varchar(100) NOT NULL,
`flw_contact_no` varchar(13) NOT NULL,
`aware_zinc` varchar(10) NOT NULL,
`aware_ors` varchar(10) NOT NULL,
`past_zinc` varchar(10) NOT NULL,
`past_ors` varchar(10) NOT NULL,
`qty_avail_zinc_ten` int(11) NOT NULL,
`qty_avail_zinc_twe` int(11) NOT NULL,
`qty_avail_zinc_syr` int(11) NOT NULL,
`qty_avail_ors` int(11) NOT NULL,
`qty_disp_zinc_ten` int(11) NOT NULL,
`qty_disp_zinc_twe` int(11) NOT NULL,
`qty_disp_zinc_syr` int(11) NOT NULL,
`qty_disp_ors` int(11) NOT NULL,
`stockout_zinc` varchar(11) NOT NULL,
`stockout_ors` varchar(11) NOT NULL,
`diar_cases_seen` int(11) NOT NULL,
`diar_cases_reff` int(11) NOT NULL,
`diar_deaths_less_than_five` int(11) NOT NULL,
`added_by` varchar(100) NOT NULL,
PRIMARY KEY (`field_visit_id`) )
ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
The query when I printed in the console was :
Insert into field_visit_details (visit_date,block,village,flw_category,flw_name,
flw_contact_no,aware_zinc,aware_ors,past_zinc,past_ors,qty_avail_zinc_ten,
qty_avail_zinc_twe,qty_avail_zinc_syr,qty_avail_ors,
qty_disp_zinc_ten,qty_disp_zinc_twe,qty_disp_zinc_syr,qty_disp_ors,stockout_zinc,
stockout_ors,diar_cases_seen,diar_cases_reff,diar_deaths_less_than_five,added_by)
values
('2014-07-02','ASDASD','','asha','asd+','99','yes','yes','yes','yes',
'12','12','12','12','12','12','12','12','yes','yes','12','12','12','admin')
But the thing is that the query is inserting the data successfully in the table but still server is showing the above error.
I even used the above printed query directly in phpmyadmin and worked well without any problem.

Answer 1

You have a syntax exception in the SQL statement. The error message you have posted point to it.
So, you need to change SQL statement and fix syntax errors. For this purpose you should rewrite it to use PraparedStatement like in the example JDBC PreparedStatement example – Insert a record.
And use appropriate to the database column types set methods when setting parameters to the prepared statement.