مثال RowMapper|الحصول على السجلات باستخدام Spring JdbcTemplate

الطريقة العامة query(String sql,RowMapper<T> rm)

الطريقة العامة T mapRow(ResultSet rs, int rowNumber) يخلص من SQLException

إنشاء جدول employee(
عدد id(10),
اسم varchar2(100),
عدد salary(10)
);

package com.w3codebox;
الطريقة العامة class Employee {
private int id;
private String name;
private float salary;
//no-arg and parameterized constructors
//getters and setters
الطريقة العامة toString(){
    عدد id+" "+name+" "+salary;
}
}

package com.w3codebox;
إدخال java.sql.ResultSet;
إدخال java.sql.SQLException;
إدخال java.util.ArrayList;
import java.util.List;
إدخال org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
public class EmployeeDao {
private JdbcTemplate template;
public void setTemplate(JdbcTemplate template) {
    this.template = template;
}
public List<Employee> getAllEmployeesRowMapper(){
 return template.query("select * from employee",new RowMapper<Employee>(){
    @Override
    public Employee mapRow(ResultSet rs, int rownumber) throws SQLException {
        Employee e=new Employee();
        e.setId(rs.getInt(1));
        e.setName(rs.getString(2));
        e.setSalary(rs.getInt(3));
        return e;
    }
    });
}
}

<?xml version="1.0" encoding="UTF-8"?>
<beans>
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="edao" class="com.w3codebox.EmployeeDao">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
</beans>

package com.w3codebox;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
    ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
    EmployeeDao dao = (EmployeeDao) ctx.getBean("edao");
    List<Employee> list = dao.getAllEmployeesRowMapper();
    للفترة e: list
        System.out.println(e);
}
}