queryForInt and queryForObject in Spring JDBC
November 05, 2013
In this page, we learn how to use queryForObject and queryForInt. queryForInt gives the count of rows. queryForObject gives the column value. We can call it with the help of JdbcTemplate. Find the example below.
FarmarDao.java
package com.concretepage.dao;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
@Repository
public class FarmarDao {
private JdbcTemplate jdbcTemplate;
@Autowired
public void setDataSource(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
public int getCount(){
return this.jdbcTemplate.queryForInt("select count(*) from farmar");
}
public String getName( int id){
return (String) this.jdbcTemplate.queryForObject("select name from farmar where id="+id, String.class);
}
}
SpringTest.java
package com.concretepage;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.concretepage.dao.FarmarDao;
public class SpringTest {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
FarmarDao farmar = (FarmarDao)context.getBean("farmarDao");
System.out.println(farmar.getCount());
System.out.println(farmar.getName(2));
}
}
queryforint-and-queryforobject-in-spring-jdbc.zip
