spring-银行转账系统

使用技术：Spring + mybatis+jsp+servlet

流程：1.导包

aopalliance.jar
asm-3.3.1.jar
aspectjweaver.jar
cglib-2.2.2.jar
commons-logging-1.1.1.jar
javassist-3.17.1-GA.jar
log4j-1.2.17.jar
log4j-api-2.0-rc1.jar
log4j-core-2.0-rc1.jar
mybatis-3.2.7.jar
mybatis-spring-1.2.3.jar
mysql-connector-java-5.1.30.jar
slf4j-api-1.7.5.jar
slf4j-log4j12-1.7.5.jar
spring-aop-4.1.6.RELEASE.jar
spring-aspects-4.1.6.RELEASE.jar
spring-beans-4.1.6.RELEASE.jar
spring-context-4.1.6.RELEASE.jar
spring-core-4.1.6.RELEASE.jar
spring-expression-4.1.6.RELEASE.jar
spring-jdbc-4.1.6.RELEASE.jar
spring-tx-4.1.6.RELEASE.jar
spring-web-4.1.6.RELEASE.jar

2.配置多个xml文件

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"version="3.0"><display-name>spring_account</display-name><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext-*.xml</param-value></context-param><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener></web-app>

applicationContext-mybatis.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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!--[1]连接数据库，获得数据源--><bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver"></property><property name="url" value="jdbc:mysql://localhost:3306/mybatis4"></property><property name="username" value="root"></property><property name="password" value="root"></property></bean><!--[2]获得sqlsessionFactory--><bean id="factory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="ds"></property><property name="typeAliasesPackage" value="com.bjsxt.pojo"></property></bean><!--[3]扫描mapper文件--><bean id="mapper" class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="sqlSessionFactoryBeanName" value="factory"></property><property name="basePackage" value="com.bjsxt.mapper"></property></bean></beans>

applicationContext-service.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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!--配置注解的扫描--><context:component-scan base-package="com.bjsxt.serviceimpl"></context:component-scan><!--扫描事务注解--><tx:annotation-driven></tx:annotation-driven></beans>

applicationContext-tx.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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!--[4]配置声明式事务--><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="ds"></property></bean><!--扫描 @Transactional--><tx:annotation-driven></tx:annotation-driven></beans>

3.写每个包中的代码：pojo ,mapper,service,serviceimpl,controller,jsp

pojo:

package com.bjsxt.pojo;import java.io.Serializable;public class Account implements Serializable {private int id;private String cno;private String pwd;private int money;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getCno() {return cno;}public void setCno(String cno) {this.cno = cno;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public int getMoney() {return money;}public void setMoney(int money) {this.money = money;}@Overridepublic String toString() {return "Account{" +"id=" + id +", cno='" + cno + '\'' +", pwd='" + pwd + '\'' +", money=" + money +'}';}public Account(int id, String cno, String pwd, int money) {this.id = id;this.cno = cno;this.pwd = pwd;this.money = money;}public Account(){}
}

mapper:

package com.bjsxt.mapper;import com.bjsxt.pojo.Account;public interface AccountMapper {public Account select(String cno,String pwd,String money);public int update1(String outCno,int money);public int update2(String inCno,int money);
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.bjsxt.mapper.AccountMapper"><select id="select" resultType="account">select  * from account<where><if test="param1!=null and param1!=''">cno=#{param1}</if><if test="param2!=null and param2!=''">and  pwd=#{param2}</if><if test="param3!=null and param3!=''">and  money>=#{param3}</if></where></select><update id="update1">update  account set money=money-#{1} where cno=#{0}</update><update id="update2">update  account set money=money+#{1} where cno=#{0}</update>
</mapper>

service:

package com.bjsxt.service;import com.bjsxt.pojo.Account;public interface AccountService {public Account findOne(String cno,String pwd,String money);public int upd(String outCno,String inCno,int money);
}

serviceimpl:

package com.bjsxt.serviceimpl;import com.bjsxt.mapper.AccountMapper;
import com.bjsxt.pojo.Account;
import com.bjsxt.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service("acc")
public class AccountServiceImpl implements AccountService {@AutowiredAccountMapper accountMapper;@Overridepublic Account findOne(String cno, String pwd, String money) {return accountMapper.select(cno,pwd,money);}@Override@Transactionalpublic int upd(String outCno, String inCno, int money) {int i1 = accountMapper.update1(outCno, money);int i2 = accountMapper.update2(inCno, money);if(i1>0&&i2>0){return 1;}return 0;}}

controller:

package com.bjsxt.controller;import com.bjsxt.pojo.Account;
import com.bjsxt.service.AccountService;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.context.support.WebApplicationContextUtils;import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;@WebServlet("/AccountController")
public class AccountController extends HttpServlet {AccountService as;@Overridepublic void init() throws ServletException {ApplicationContext app= WebApplicationContextUtils.getWebApplicationContext(getServletContext());as = app.getBean("acc", AccountService.class);}@Overrideprotected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {String method = req.getParameter("method");if("checkUser".equals(method)){checkUser(req,resp);}else if("inOut".equals(method)){inOut(req,resp);}}protected void inOut (HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//1.获取数据String cno = req.getParameter("cno");String cno2 = req.getParameter("cno2");int money =Integer.parseInt(req.getParameter("money")) ;//2.调业务处理int upd = as.upd(cno, cno2, money);//3.响应if(upd>0){resp.sendRedirect("/s_account/success.jsp");}else{resp.sendRedirect("/s_account/account.jsp");}}protected void checkUser (HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//1.获得数据String cno = req.getParameter("cno");String pwd = req.getParameter("pwd");String money = req.getParameter("money");//2.调用业务Account one = as.findOne(cno, pwd, money);//响应if(one!=null){resp.getWriter().println("true");}else {resp.getWriter().println("false");}}}

account.jsp:

<%--Created by IntelliJ IDEA.User: AdministratorDate: 2019/9/11Time: 17:02To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html>
<head><title>银行转账</title><script type="text/javascript" src="js/jquery-1.12.3.min.js"></script><script type="text/javascript">var flag1=false;var flag2=false;var flag3=false;//页面加载发起ajax请求$(function () {//在输入密码后失去焦点验证账号和密码是否正确$("#pwd").blur(function () {//发起ajax请求，参数为账号密码var cno=$("#cno").val();var pwd = $("#pwd").val();$.post("AccountController?method=checkUser","cno="+cno+"&pwd="+pwd, function (data) {if (data){flag1=true;$("#pwd_span").html("账号和密码一致").css("color","green");}else{$("#pwd_span").html("账号和密码不一致").css("color","red");}},"json")})//在输入金额后判断金额是否大于转出的金额$("#money").blur(function () {//发起ajax请求，参数为账号密码var cno=$("#cno").val();var pwd = $("#pwd").val();var money = $("#money").val();$.post("AccountController?method=checkUser","cno="+cno+"&pwd="+pwd+"&money="+money, function (data) {if (data){flag2=true;$("#money_span").html("合适的金额").css("color","green");}else{$("#money_span").html("金额不足").css("color","red");}},"json")})//判断收款账号是否正确/* $("#con2").blur(function () {var cno2=$("#cno2").val();var cno=$("#cno").val();alert(cno2);if (cno ==cno2){alert("转账账号和收入账号不能一样")}else{$.post("AccountController?method=checkUser","cno="+cno2, function (data) {if (data){$("#cno2_span").html("收款账号正常").css("color","green");}else{$("#cno2_span").html("收款账号不对").css("color","red");}},"json")}})
*///判断汇款人信息$("#cno2").blur(function () {var   cno2=$("#cno2").val();var   cno=$("#cno").val();if(cno==cno2){alert("！该账号和自己账号一致")}else{$.post("AccountController?method=checkUser","cno="+cno2,function (data1) {if(data1){flag3=true;$("#cno2_span").html("收款人信息正确").css("color","green");}else {$("#cno2_span").html("收款人信息错误").css("color","red");}},"json");}})})function change() {if (flag1&&flag2&&flag3){return true;//三个信息都正确，返回true  ，再把true返回给onsubmit,onsubmit的true，false决定表达是否提交}return  false;}</script>
</head>
<body>
<h3>银行转账系统</h3><form action="AccountController?method=inOut" method="post" onsubmit="return change()"><p>转账账号：<input type="text" id="cno" name="cno"/></p><p>转账密码：<input type="password" id="pwd" /><span id="pwd_span"></span></p><p>转账金额：<input type="text" id="money" name="money"/><span id="money_span"></span></p><p>收账账号：<input type="text" id="cno2" name="cno2"/><span id="cno2_span"></span></p><p>确认转账：<input type="submit" value="确认转账" /></p></form></body>
</html>

success.jsp:

<%--Created by IntelliJ IDEA.User: AdministratorDate: 2019/9/11Time: 21:10To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>Title</title>
</head>
<body>
<h3>转账成功</h3>
</body>
</html>

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