Spring 使用jdbcDaoSupport

依赖jar包

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

 

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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:property-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>

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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;

}

}