配置Spring数据源的4种方法

1.Spring4种数据源详细配置参考一下网址：http://yonguo.iteye.com/blog/115221

2.使用Spring 模板对数据库进行GRUD操作。Spring的JDBC框架承担了资源管理和异常处理的工作，从而简化了JDBC代码，我们只需要编写从数据库读写数据的代码即可。

3.Spring为JDBC提供了三个模板类分别为：

JdbcTempate:最基本的Spring JDBC模板，此模板支持简单的JDBC数据访问和基于索引参数查询。

NameParameterJdbcTempate:使用该模板类执行查询时可以将值以命名参数的形式绑定到SQL，而不是使用简单的索引参数。

SimpleJdbcTempate:该模板利用java5的一些特性如自动装箱、泛型以及可变参数列来简化JDBC模板的使用。

4.配置JDBC驱动的数据源代码演示

package com.tutorialspointDAO;
public class Student {
private Integer age;
private String name;
private Integer id;
public void setAge(Integer age) {
this.age = age;
}
public Integer getAge() {
return age;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
}

package com.tutorialspointDAO;
import java.util.List;
import javax.sql.DataSource;
public interface StudentDAO {

public void setDataSource(DataSource ds);

public void create(String name, Integer age);

public Student getStudent(Integer id);

public List<Student> listStudents();

public void delete(Integer id);

public void update(Integer id, Integer age);
}

package com.tutorialspointDAO;
import java.util.List;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
public class StudentJDBCTemplate implements StudentDAO {
@SuppressWarnings("unused")
private DataSource dataSource;
//使用JdbcTemplate访问数据库资源
private JdbcTemplate jdbcTemplateObject;
//连接数据库
public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
this.jdbcTemplateObject = new JdbcTemplate(dataSource);
}
//向数据库中插入数据
public void create(String name, Integer age) {
String SQL = "insert into student (name, age) values (?, ?)";
jdbcTemplateObject.update( SQL, name, age);
System.out.println("姓名= " + name + " 年龄 = " + age);

}
//获取某ID号的学生
public Student getStudent(Integer id) {
String SQL = "select * from student where id = ?";
Student student = jdbcTemplateObject.queryForObject(SQL,
new Object[]{id}, new StudentMapper());
return student;
}
//将查询的结果放进List容器
public List<Student> listStudents() {
String SQL = "select * from student";
List <Student> students = jdbcTemplateObject.query(SQL,
new StudentMapper());
return students;
}
//根据ID号删除某一对象
public void delete(Integer id){
String SQL = "delete from student where id = ?";
jdbcTemplateObject.update(SQL, id);
System.out.println("删除记录 = " + id );

}
//选择某一id号，更新数据
public void update(Integer id, Integer age){
String SQL = "update student set age = ? where id = ?";
jdbcTemplateObject.update(SQL, age, id);
System.out.println("修改记录 = " + id );

}
}

package com.tutorialspointDAO;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.jdbc.core.RowMapper;
public class StudentMapper implements RowMapper<Student> {
public Student mapRow(ResultSet rs, int rowNum) throws SQLException {
Student student = new Student();
student.setId(rs.getInt("id"));
student.setName(rs.getString("name"));
student.setAge(rs.getInt("age"));
return student;
}
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd ">

<!-- Initialization for data source -->
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/test"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>

<!-- Definition for studentJDBCTemplate bean -->
<bean id="studentJDBCTemplate"
class="com.tutorialspointDAO.StudentJDBCTemplate">
<property name="dataSource"  ref="dataSource" />
</bean>

</beans>

package com.tutorialspointDAO;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.tutorialspointDAO.StudentJDBCTemplate;
public class MainApp {
public static void main(String[] args) {
@SuppressWarnings("resource")
ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
StudentJDBCTemplate studentJDBCTemplate =
(StudentJDBCTemplate)context.getBean("studentJDBCTemplate");
System.out.println("------向数据库添加条三条记录--------" );
studentJDBCTemplate.create("张三", 11);
studentJDBCTemplate.create("李四", 2);
studentJDBCTemplate.create("王五", 15);
System.out.println("------查询结果为--------" );
List<Student> students = studentJDBCTemplate.listStudents();
for (Student record : students) {
System.out.print("ID : " + record.getId() );
System.out.print(", Name : " + record.getName() );
System.out.println(", Age : " + record.getAge());
}
System.out.println("---- 修改ID=2的数据-----" );
studentJDBCTemplate.update(2, 20);
System.out.println("----显示 ID = 2的记录数据 -----" );
Student student = studentJDBCTemplate.getStudent(2);
System.out.print("ID : " + student.getId() );
System.out.print(", Name : " + student.getName() );
System.out.println(", Age : " + student.getAge());
}
}

控制台输出结果为：

------向数据库添加条三条记录--------
姓名= 张三 年龄 = 11
姓名= 李四 年龄 = 2
姓名= 王五 年龄 = 15
------查询结果为--------
ID : 1, Name : 张三, Age : 11
ID : 2, Name : 李四, Age : 2
ID : 3, Name : 王五, Age : 15
---- 修改ID=2的数据-----
修改记录 = 2
----显示 ID = 2的记录数据 -----
ID : 2, Name : 李四, Age : 20

总结：需要导入spring-jdbc-4.3.8.RELEASE.jar、mysql-connector-java-5.1.6.jar、org.springframework.transaction.jar等必要的jar包。