springmvc+spring+jdbc综合练习

springmvc+spring+jdbc

项目整合
要求：

查询所有账户余额
查询某个账户余额
充值 给指定账户充值
提现 从指定账户提现
转账

创建项目添加依赖jar包

1 导jar包
pom.xml中的jar引入

<dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>
    
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>javax.servlet-apiartifactId>
      <version>4.0.1version>
      <scope>providedscope>
    dependency>
    
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>fastjsonartifactId>
      <version>1.2.62version>
    dependency>

    
    <dependency>
      <groupId>commons-fileuploadgroupId>
      <artifactId>commons-fileuploadartifactId>
      <version>1.3.3version>
    dependency>
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-context-supportartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-testartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>

    
    <dependency>
      <groupId>commons-logginggroupId>
      <artifactId>commons-loggingartifactId>
      <version>1.2version>
    dependency>

    
    
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aspectsartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>
    
    <dependency>
      <groupId>aopalliancegroupId>
      <artifactId>aopallianceartifactId>
      <version>1.0version>
    dependency>
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-txartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-jdbcartifactId>
      <version>5.1.14.RELEASEversion>
    dependency>

    
    <dependency>
      <groupId>com.mchangegroupId>
      <artifactId>c3p0artifactId>
      <version>0.9.5.2version>
    dependency>
    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>5.1.47version>
    dependency>
    

创建对应配置文件

创建db.properties

jdbc.jdbcUrl = jdbc:mysql://localhost:3306/mybaits
jdbc.driverClass = com.mysql.jdbc.Driver
jdbc.user = root
jdbc.password = 123456

spring中applicationContext.xml配置文件的内容

<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:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd">
    <context:component-scan base-package="com.lanou.pojo,com.lanou.dao,com.lanou.service,com.lanou.interceptor,com.lanou.utils">context:component-scan>
    
    <aop:aspectj-autoproxy>aop:aspectj-autoproxy>
    <context:property-placeholder location="classpath:db.properties">context:property-placeholder>
    <bean name="dataSource"
          class="com.mchange.v2.c3p0.ComboPooledDataSource"
          p:jdbcUrl="${jdbc.jdbcUrl}"
          p:driverClass="${jdbc.driverClass}"
          p:user="${jdbc.user}"
          p:password="${jdbc.password}">
    bean>
    
    <bean name="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">property>
    bean>
    

beans>

创建springmvc中的配置文件springmvc-servlet.xml

<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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd
       ">
    
    <context:component-scan base-package="com.lanou.controller">context:component-scan>
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/jsp/">property>
        <property name="suffix" value=".jsp">property>
    bean>
    
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/html;charset=utf-8value>
                        <value>application/json;charset=utf-8value>
                        <value>text/plain;charset=utf-8value>
                        <value>application/xml;charset=utf-8value>
                    list>
                property>
            bean>
        mvc:message-converters>
    mvc:annotation-driven>
    
    <mvc:resources mapping="/static/**" location="/static/">mvc:resources>
beans>

3 创建好对应的包结构
在pojo包中创建与数据库表对应的ArAccount.java

public class ArAccount {
    private Integer id;
    private String username;
    private Double money;
    //...
}

在static 下创建js包引入jquey-xx-xx.js
创建一个静态页面

比如第一个功能查询所有账户信息

控制层(controller)

import com.alibaba.fastjson.JSON;
import com.lanou.pojo.ArAccount;
import com.lanou.service.ArAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
@RequestMapping("/arAccount")
public class ArAcountController {
    @Autowired
    private ArAccountService arAccountService;
    @RequestMapping("/findAll")
    @ResponseBody
    public String fincdAll(){
        List<ArAccount> list = arAccountService.findAll();
        return JSON.toJSONString(list);
    }
 }

service层

ArAccountService 接口

public interface ArAccountService {
    //查询所有账户余额
    List<ArAccount> findAll();
}

实现类

@Service
public class ArAccountServiceImpl implements ArAccountService {
    @Autowired
    private ArAccountDao dao;
    @Override
    public List<ArAccount> findAll() {
        return dao.findAll();
    }

dao层

ArAccountDao接口

public interface ArAccountDao {
    //查询所有账户余额
    List<ArAccount> findAll();
}

ArAccountDaoImpl实现类

@Repository
public class ArAccountDaoImpl implements ArAccountDao {
    @Autowired
    private JdbcTemplate jdbcTemplate;
    @Override
    public List<ArAccount> findAll() {
        String sql = "select * from ar_account";
        List<ArAccount> list = jdbcTemplate.query(sql, new RowMapper<ArAccount>() {
            @Override
            public ArAccount mapRow(ResultSet resultSet, int i) throws SQLException {
                ArAccount arAccount = new ArAccount();
                arAccount.setId(resultSet.getInt("id"));
                arAccount.setUsername(resultSet.getString("username"));
                arAccount.setMoney(resultSet.getDouble("money"));
                return arAccount;
            }
        });
        return list;
    }

前端页面显示

<script type="text/javascript" src="/static/js/jquery-3.4.1.js">script>
    <script type="text/javascript">

        $(function () {
            $.get("/arAccount/findAll",function (data) {
                for (var s=0; s< data.length;s++){
                   $("tbody").append(""+data[s].id+""+data[s].username+""+data[s].money+"")
                 }

            },"json");
        });
script>

前端页面

<table>
        <thead>
        <tr>
            <td>idtd>
            <td>账户名td>
            <td>资金td>
        tr>
        thead>
        <tbody>
        tbody>
    table>