java实验之转账
作者：互联网
了解基于XML、注解的声明式AspectJ开发案例代码的编写，了解 Spring JDBC 的配置，了解Spring JdbcTemplate 的常用方法，了解基于XML方式和基于Annotation方式的声明式事务管理的实现。
controller类
package gsg.controller;
import javax.annotation.Resource;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import gsg.service.AccountService;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class AccountController {
@Resource(name="accountService")
private AccountService accountService;
@Test
public void demo1(){
accountService.insertaccount("张三", 100000d);
System.out.println("存款成功");
}
@Test
public void demo2(){
accountService.transfer("张三", "张二", 2d);
System.out.println("转账成功");
}
@Test
public void demo3(){
accountService.insertaccount("张六", 100000d);
accountService.transfer("张56", "张5", 1d);
System.out.println("转账失败");} }
dao类
package gsg.dao;
public interface AccountDao {
public void insertaccount(String name, Double money);
public String findaccount(String name);
public void outMoney(String from ,Double money);
public void inMoney(String to ,Double money);
}
package gsg.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;
import gsg.entity.Account;
public class AccountDaoImpl extends JdbcDaoSupport implements AccountDao {
@Override
public void outMoney(String from, Double money) {
this.getJdbcTemplate().update("update account set money = money - ? where name = ?", money, from);
}
@Override
public void inMoney(String to, Double money) {
this.getJdbcTemplate().update("update account set money = money + ? where name = ?", money, to);
}
@Override
public void insertaccount(String name, Double money) {
// TODO Auto-generated method stub
this.getJdbcTemplate().update("insert into account values (null,?,?)", name, money);
}
@Override
public String findaccount(String name) {
// TODO Auto-generated method stub
Account account = this.getJdbcTemplate().queryForObject("select * from account where name = ?",
new MyRowMapper(), name);
return account.toString();
}
class MyRowMapper implements RowMapper<Account> {
@Override
public Account mapRow(ResultSet rs, int rowNum) throws SQLException {
Account account = new Account();
account.setId(rs.getInt("id"));
account.setName(rs.getString("name"));
account.setMoney(rs.getDouble("money"));
return account; } }}
entity类
package gsg.entity;
public class Account {
@Override
public String toString() {
return "Account [id=" + id + ", name=" + name + ", money=" + money + "]";
}
private int id;
private String name;
private double money;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getMoney() {
return money;
}
public void setMoney(double money) {
this.money = money;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
service类
package gsg.service;
public interface AccountService {
public void insertaccount(String name,Double money);
public String findaccount(String name);
public void transfer(String from,String to,Double money);
}
package gsg.service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import gsg.dao.AccountDao;
@Transactional(isolation=Isolation.DEFAULT,propagation=Propagation.REQUIRED)
public class AccountServiceImpl implements AccountService {
// 注入DAO:
private AccountDao accountDao;
public void setAccountDao(AccountDao accountDao) {
this.accountDao = accountDao;
}
@Override
public void transfer( String from, String to, Double money) {
accountDao.outMoney(from, money);
//int d = 1/0;
accountDao.inMoney(to, money);
}
@Override
public void insertaccount(String name, Double money) {
// TODO Auto-generated method stub
accountDao.insertaccount(name, money);
}
@Override
public String findaccount(String name) {
// TODO Auto-generated method stub
String text=accountDao.findaccount(name);
return text; }}
Xml配置文件
<?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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:gsgponent-scan
base-package="gsg" />
<aop:aspectj-autoproxy />
<bean id="accountDao" class="gsg.dao.AccountDaoImpl">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="accountService" class="gsg.service.AccountServiceImpl">
<property name="accountDao" ref="accountDao"/>
</bean>
<context:property-placeholder
location="classpath:jdbc.properties" />
<bean id="dataSource"
class="gsg.mchange.v2.c3p0.gsgboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}" />
<property name="jdbcUrl" value="${jdbc.url}" />
<property name="user" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:annotation-driven
transaction-manager="transactionManager" />
</beans>
jdbc配置文件
jdbc.driverClass=gsg.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///practice1?characterEncoding=utf-8
jdbc.username=root
jdbc.password=root
log4j.properties配置文件
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c\:mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.rootLogger= info, stdout
标签：转账,java,String,money,void,实验,import,public,name 来源： https://blog.csdn.net/aiaias/article/details/120983637