Spring 使用jdbcDaoSupport

依赖jar包



工程结构
————————————————————————————————————————————————————

 ————————————————————————————————————————————————————Bean.xml

<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>

<context:prope
4000
rty-placeholder location="jdbc.properties"/>

<bean id="studentDao" class="com.java1234.dao.impl.StudentDaoImpl">
<property name="dataSource" ref="dataSource"></property>
</bean>

<bean id="studentService" class="com.java1234.service.impl.StudentServiceImpl">
<property name="studentDao" ref="studentDao"></property>
</bean>

</beans>

————————————————————————————————————————————————————DAO层

package com.java1234.dao.impl;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import com.java1234.dao.StudentDao;
import com.java1234.model.Student;
// JdbcDaoSupport内部提供了对jdbcTemplate的支持
public class StudentDaoImpl extends JdbcDaoSupport implements StudentDao{

@Override
public int addStudent(Student student) {
String sql="insert into t_student values(null,?,?)";
Object []params=new Object[]{student.getName(),student.getAge()};
return this.getJdbcTemplate().update(sql,params);
}

@Override
public int updateStudent(Student student) {
String sql="update t_student set name=?,age=? where id=?";
Object []params=new Object[]{student.getName(),student.getAge(),student.getId()};
return this.getJdbcTemplate().update(sql,params);
}

@Override
public int deleteStudent(int id) {
String sql="delete from t_student where id=?";
Object []params=new Object[]{id};
return this.getJdbcTemplate().update(sql,params);
}

@Override
public List<Student> findStudents() {
String sql="select * from t_student";
final List<Student> studentList=new ArrayList<Student>();
this.getJdbcTemplate().query(sql, new RowCallbackHandler(){

@Override
public void processRow(ResultSet rs) throws SQLException {
Student student=new Student();
student.setId(rs.getInt("id"));
student.setName(rs.getString("name"));
student.setAge(rs.getInt("age"));
studentList.add(student);
}

});
return studentList;
}

}