数据库建表和插入数据
1、数据库建表
2、插入数据
项目目录
代码部分
1、IAccountDao.java
package com.qingruan.dao;
public interface IAccountDao {
public void addMoney(String name,double money);
public void subMoney(String name,double money);
}
2、AccountDaoImpl.java
package com.qingruan.dao.impl; import com.qingruan.dao.IAccountDao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.stereotype.Repository; @Repository public class AccountDaoImpl implements IAccountDao { @Autowired private JdbcTemplate jdbcTemplate; @Override public void addMoney(String name, double money) { String sql="update account set money = money + ? where name = ?"; jdbcTemplate.update(sql,money,name); } @Override public void subMoney(String name, double money) { String sql="update account set money = money - ? where name = ?"; jdbcTemplate.update(sql,money,name); } }
3、IAccountService.java
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package com.qingruan.service; public interface IAccountService { public void transfer(String form,String target,double money); }
4、AccountServiceImpl.java
package com.qingruan.service.impl; import com.qingruan.dao.IAccountDao; import com.qingruan.service.IAccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class AccountServiceImpl implements IAccountService { @Autowired private IAccountDao accountDao; @Override public void transfer(String form, String target, double money) { accountDao.subMoney(form,money); //System.out.println(1/0); accountDao.addMoney(target,money); } }
5、TestApp.java
package com.qingruan.test; import com.qingruan.service.IAccountService; import com.qingruan.service.impl.AccountServiceImpl; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class TestApp { @Test public void test(){ ApplicationContext app = new ClassPathXmlApplicationContext("applicationContext.xml"); AccountServiceImpl service = (AccountServiceImpl)app.getBean(IAccountService.class); service.transfer("李四","张三",500); } }