Spring（二）继承jdbcDaoSupport的方式实现(增删改查)

一 首先创建数据库表和相应的字段,并创建约束

二 建立项目,导入jar包(ioc,aop,dao,数据库驱动,连接池)并且将applicationContext.xml文件放在src下

三 开启组件扫描,并且配置数据源

四 编写一个实体类(提供get set)方法,toString(),有参和无参以及序列化

五 设置一个接口根据银行账号完成增删改查

六 实现Dao接口,继承jdbcDaoSupport,在实现类上加上对应的标注,将实现类对象放入容器中,给jdbcDaoSupport赋值dataSource

七 测试结果

applicationContext.xml的配置

 <?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.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">
     <!-- 开启组件扫描 -->
     <context:component-scan base-package="com.xdl"></context:component-scan>
     <!-- 引入外部db.properties -->
     <context:property-placeholder location="classpath:db.properties"/>
     <!-- 配置数据源 -->
     <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
         <property name="driverClassName" value="${driverClassName}"></property>
         <property name="url" value="${url}"></property>
         <property name="username" value="${jdbc.username}"></property>
         <property name="password" value="${jdbc.password}"></property>
     </bean>
 </beans>

数据库表

 drop table xdl_bank_account cascade constraints;
 create table xdl_bank_account(
         id number constraint xdl_bank_account_id_pk primary key,
         acc_no varchar2(30) constraint xdl_bank_account_acc_no_uk unique,
         acc_password varchar2(30),
         acc_money number
     );
 drop sequence xdl_bank_account_id_seq;
 create sequence xdl_bank_account_id_seq;
 insert into xdl_bank_account values (xdl_bank_account_id_seq.nextval,'acc_abc1','1231',1234561);

Bean

 package com.xdl.bean;

 import java.io.Serializable;

 public class XdlBankAccount implements Serializable {
     /**
      *
      */
     private static final long serialVersionUID = 1L;
     private int id;
     private String acc_no;
     private String acc_password;
     private String acc_money;

     public XdlBankAccount(int id) {
         super();
         this.id = id;
     }

     public XdlBankAccount(String acc_no, String acc_password, String acc_money) {
         super();
         this.acc_no = acc_no;
         this.acc_password = acc_password;
         this.acc_money = acc_money;
     }

     public XdlBankAccount(int id, String acc_no, String acc_password, String acc_money) {
         super();
         this.id = id;
         this.acc_no = acc_no;
         this.acc_password = acc_password;
         this.acc_money = acc_money;
     }

     public XdlBankAccount() {
         super();
         // TODO Auto-generated constructor stub
     }

     public int getId() {
         return id;
     }

     public void setId(int id) {
         this.id = id;
     }

     public String getAcc_no() {
         return acc_no;
     }

     public void setAcc_no(String acc_no) {
         this.acc_no = acc_no;
     }

     public String getAcc_password() {
         return acc_password;
     }

     public void setAcc_password(String acc_password) {
         this.acc_password = acc_password;
     }

     public String getAcc_money() {
         return acc_money;
     }

     public void setAcc_money(String acc_money) {
         this.acc_money = acc_money;
     }

     @Override
     public String toString() {
         return "XdlBankAccount [id=" + id + ", acc_no=" + acc_no + ", acc_password=" + acc_password + ", acc_money="
                 + acc_money + "]\n";
     }
 }

Dao

 package com.xdl.dao;

 import java.util.List;

 import com.xdl.bean.XdlBankAccount;

 public interface XdlBankAccountDao {
     // 根据银行账户acc_no查询银行账户对象
     XdlBankAccount getBankAccountByAccNo(String acc_no);

     // 根据id查询银行账户对象
     XdlBankAccount getBanAccountByAccId(int id);

     // 查询所有的银行账户
     List<XdlBankAccount> getBankAccountAll();

     // 更新数据
     int updateBankAccount(XdlBankAccount account);

     // 向银行表中插入数据
     int insertBankAccount(XdlBankAccount account);

     // 根据id删除银行账户
     int deleteBankAccount(XdlBankAccount account);
 }

Dao的实现类

 package com.xdl.impl;

 import java.util.List;

 import javax.annotation.Resource;
 import javax.sql.DataSource;

 import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.support.JdbcDaoSupport;
 import org.springframework.stereotype.Repository;

 import com.sun.org.apache.bcel.internal.generic.RET;
 import com.xdl.bean.XdlBankAccount;
 import com.xdl.dao.XdlBankAccountDao;
 import com.xdl.mapper.XdlBankAccountMapper;

 @Repository("bankDao")
 public class XdlBankAccountDaoOracleImpl extends JdbcDaoSupport implements XdlBankAccountDao {
     @Resource(name = "dataSource")
     public void setMyDataSource(DataSource dataSource) {
         // 赋值给父类
         super.setDataSource(dataSource);
     }

     // 根据银行账户acc_no查询银行账户对象
     @Override
     public XdlBankAccount getBankAccountByAccNo(String acc_no) {
         String sql = "select * from xdl_bank_account where acc_no = ?";
         // return super.getJdbcTemplate().queryForObject(sql, requiredType, acc_no);
         try {
             return super.getJdbcTemplate().queryForObject(sql, new XdlBankAccountMapper(), acc_no);
         } catch (DataAccessException e) {
             e.printStackTrace();
         }
         return null;
         /**
          * Spring Dao框架没有做吧结果集翻译成对象过程
          */
     }

     // 根据id查询银行账户对象
     /*
      * @Override public XdlBankAccount getBanAccountByAccId(int id) { String sql =
      * "select * from xdl_bank_account where id = ?"; try { return
      * super.getJdbcTemplate().queryForObject(sql, new XdlBankAccountMapper(), id);
      * } catch (DataAccessException e) { e.printStackTrace(); } return null; }
      */
     // 根据id查询银行账户对象
     @Override
     public XdlBankAccount getBanAccountByAccId(int id) {
         String sql = "select * from xdl_bank_account where id = ?";
         List<XdlBankAccount> accounts = super.getJdbcTemplate().query(sql, new XdlBankAccountMapper(), id);
         return accounts.isEmpty() ? null : accounts.get(0);
     }

     // 查询所有的银行账户信息
     @Override
     public List<XdlBankAccount> getBankAccountAll() {
         String sql = "select * from xdl_bank_account";
         return super.getJdbcTemplate().query(sql, new XdlBankAccountMapper());
     }

     // 更新数据
     @Override
     public int updateBankAccount(XdlBankAccount account) {
         String sql = "update xdl_bank_account set acc_password = ?,acc_money = ? where id = ? and acc_no = ?";
         return super.getJdbcTemplate().update(sql, account.getAcc_password(), account.getAcc_money(), account.getId(),
                 account.getAcc_no());
     }

     // 根据id删除银行账户
     @Override
     public int deleteBankAccount(XdlBankAccount account) {
         String sql = "delete from xdl_bank_account where id = ?";
         try {
             return super.getJdbcTemplate().update(sql, account.getId());
         } catch (DataAccessException e) {
             e.printStackTrace();
         }
         return 0;
     }

     // 向银行表中插入数据
     @Override
     public int insertBankAccount(XdlBankAccount account) {
         String sql = "insert into xdl_bank_account values (xdl_bank_account_id_seq.nextval,?,?,?)";
         try {
             return super.getJdbcTemplate().update(sql, account.getAcc_no(), account.getAcc_password(),
                     account.getAcc_money());
         } catch (DataAccessException e) {
             e.printStackTrace();
         }
         return 0;
     }
 }

RowMapper(行映射)

 package com.xdl.mapper;

 import java.sql.ResultSet;
 import java.sql.SQLException;

 import org.springframework.jdbc.core.RowMapper;

 import com.xdl.bean.XdlBankAccount;

 //T代表返回的类型
 public class XdlBankAccountMapper implements RowMapper<XdlBankAccount> {

     @Override
     // rs是结果集,index代表数据到了第几条
     public XdlBankAccount mapRow(ResultSet rs, int index) throws SQLException {
         // 在这里写结果集中的数据如何转换成银行账户对象
         return new XdlBankAccount(rs.getInt("id"), rs.getString("acc_no"), rs.getString("acc_password"),
                 rs.getString("acc_money"));
     }

 }

测试类

 package com.xdl.test;

 import static org.junit.Assert.*;

 import java.util.List;

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import com.xdl.bean.XdlBankAccount;
 import com.xdl.dao.XdlBankAccountDao;

 public class Test {
     ApplicationContext ioc = new ClassPathXmlApplicationContext("applicationContext.xml");
     XdlBankAccountDao bankAccountDao = ioc.getBean("bankDao", XdlBankAccountDao.class);

     // 根据银行账户acc_no查询银行账户对象
     @org.junit.Test
     public void testGetBankAccountByAccNo() {
         XdlBankAccount bankAccount = bankAccountDao.getBankAccountByAccNo("acc_abb");
         System.out.println(bankAccount);
     }

     // 根据id查询银行账户对象
     @org.junit.Test
     public void testGetBankAccountById() {
         XdlBankAccount bankAccount = bankAccountDao.getBanAccountByAccId(2);
         System.out.println(bankAccount);
     }

     // 查询所有的银行账户信息
     @org.junit.Test
     public void testGetBankAccountAll() {
         List<XdlBankAccount> accounts = bankAccountDao.getBankAccountAll();
         System.out.println(accounts);
     }

     // 更新数据
     @org.junit.Test
     public void testUpdateBankAccount() {
         int updateBankAccount = bankAccountDao.updateBankAccount(new XdlBankAccount(2, "acc_abb", "456", "111"));
         System.out.println(updateBankAccount);
     }

     // 根据id删除银行账户数据
     @org.junit.Test
     public void testDeleteBankAccount() {
         int deleteBankAccount = bankAccountDao.deleteBankAccount(new XdlBankAccount(2));
         System.out.println(deleteBankAccount);
     }

     // 向银行表中插入数据
     @org.junit.Test
     public void testInsertBankAccount() {
         int insertBankAccount = bankAccountDao.insertBankAccount(new XdlBankAccount("wangcai", "12345", "5555"));
         System.out.println(insertBankAccount);
     }

 }