文章目录

一环境准备
- 1.1 用到的工具
- 1.2 用到的数据库源码
三完整参考内容

写下本文的意义：在于可以为正在学习Mybatis动态SQL的同学提供一些资料和参考答案
手握命运，面向未来！星光不负赶路人！

一环境准备

1.1 用到的工具

IDEA
Lombok插件
Mysql数据库
maven环境

1.2 用到的数据库源码

`smbms_provider``smbms_bill`CREATE TABLE `teacher` (
`id` INT(10) NOT NULL,
`name` VARCHAR(30) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO teacher(`id`, `name`) VALUES (1, '秦老师');

CREATE TABLE `student` (
`id` INT(10) NOT NULL,
`name` VARCHAR(30) DEFAULT NULL,
`tid` INT(10) DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `fktid` (`tid`),
CONSTRAINT `fktid` FOREIGN KEY (`tid`) REFERENCES `teacher` (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO `student` (`id`, `name`, `tid`) VALUES ('1', '小明', '1');
INSERT INTO `student` (`id`, `name`, `tid`) VALUES ('2', '小红', '1');
INSERT INTO `student` (`id`, `name`, `tid`) VALUES ('3', '小张', '1');
INSERT INTO `student` (`id`, `name`, `tid`) VALUES ('4', '小李', '1');
INSERT INTO `student` (`id`, `name`, `tid`) VALUES ('5', '小王', '1');


CREATE TABLE `blog` (
`id` VARCHAR(50) NOT NULL COMMENT '博客id',
`title` VARCHAR(100) NOT NULL COMMENT '博客标题',
`author` VARCHAR(30) NOT NULL COMMENT '博客作者',
`create_time` DATETIME NOT NULL COMMENT '创建时间',
`views` INT(30) NOT NULL COMMENT '浏览量'
) ENGINE=INNODB DEFAULT CHARSET=utf8;


CREATE DATABASE smbms;
USE `smbms`;
 
DROP TABLE IF EXISTS `smbms_address`;
 
CREATE TABLE `smbms_address` (
  `id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `contact` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '联系人姓名',
  `addressDesc` VARCHAR(50) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '收货地址明细',
  `postCode` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '邮编',
  `tel` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '联系人电话',
  `createdBy` BIGINT(20) DEFAULT NULL COMMENT '创建者',
  `creationDate` DATETIME DEFAULT NULL COMMENT '创建时间',
  `modifyBy` BIGINT(20) DEFAULT NULL COMMENT '修改者',
  `modifyDate` DATETIME DEFAULT NULL COMMENT '修改时间',
  `userId` BIGINT(20) DEFAULT NULL COMMENT '用户ID',
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
INSERT  INTO `smbms_address`(`id`,`contact`,`addressDesc`,`postCode`,`tel`,`createdBy`,`creationDate`,`modifyBy`,`modifyDate`,`userId`) 
VALUES (1,'王丽','北京市东城区东交民巷44号','100010','13678789999',1,'2016-04-13 00:00:00',NULL,NULL,1),
(2,'张红丽','北京市海淀区丹棱街3号','100000','18567672312',1,'2016-04-13 00:00:00',NULL,NULL,1),
(3,'任志强','北京市东城区美术馆后街23号','100021','13387906742',1,'2016-04-13 00:00:00',NULL,NULL,1),
(4,'曹颖','北京市朝阳区朝阳门南大街14号','100053','13568902323',1,'2016-04-13 00:00:00',NULL,NULL,2),
(5,'李慧','北京市西城区三里河路南三巷3号','100032','18032356666',1,'2016-04-13 00:00:00',NULL,NULL,3),
(6,'王国强','北京市顺义区高丽营镇金马工业区18号','100061','13787882222',1,'2016-04-13 00:00:00',NULL,NULL,3);
 
DROP TABLE IF EXISTS `smbms_bill`;
 
CREATE TABLE `smbms_bill` (
  `id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `billCode` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '账单编码',
  `productName` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '商品名称',
  `productDesc` VARCHAR(50) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '商品描述',
  `productUnit` VARCHAR(10) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '商品单位',
  `productCount` DECIMAL(20,2) DEFAULT NULL COMMENT '商品数量',
  `totalPrice` DECIMAL(20,2) DEFAULT NULL COMMENT '商品总额',
  `isPayment` INT(10) DEFAULT NULL COMMENT '是否支付（1：未支付 2：已支付）',
  `createdBy` BIGINT(20) DEFAULT NULL COMMENT '创建者（userId）',
  `creationDate` DATETIME DEFAULT NULL COMMENT '创建时间',
  `modifyBy` BIGINT(20) DEFAULT NULL COMMENT '更新者（userId）',
  `modifyDate` DATETIME DEFAULT NULL COMMENT '更新时间',
  `providerId` BIGINT(20) DEFAULT NULL COMMENT '供应商ID',
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=19 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
INSERT  INTO `smbms_bill`(`id`,`billCode`,`productName`,`productDesc`,`productUnit`,`productCount`,
`totalPrice`,`isPayment`,`createdBy`,`creationDate`,`modifyBy`,`modifyDate`,`providerId`) 
VALUES (2,'BILL2016_002','香皂、肥皂、药皂','日用品-皂类','块','1000.00','10000.00',2,1,'2016-03-23 04:20:40',NULL,NULL,13),
(3,'BILL2016_003','大豆油','食品-食用油','斤','300.00','5890.00',2,1,'2014-12-14 13:02:03',NULL,NULL,6),
(4,'BILL2016_004','橄榄油','食品-进口食用油','斤','200.00','9800.00',2,1,'2013-10-10 03:12:13',NULL,NULL,7),
(5,'BILL2016_005','洗洁精','日用品-厨房清洁','瓶','500.00','7000.00',2,1,'2014-12-14 13:02:03',NULL,NULL,9),
(6,'BILL2016_006','美国大杏仁','食品-坚果','袋','300.00','5000.00',2,1,'2016-04-14 06:08:09',NULL,NULL,4),
(7,'BILL2016_007','沐浴液、精油','日用品-沐浴类','瓶','500.00','23000.00',1,1,'2016-07-22 10:10:22',NULL,NULL,14),
(8,'BILL2016_008','不锈钢盘碗','日用品-厨房用具','个','600.00','6000.00',2,1,'2016-04-14 05:12:13',NULL,NULL,14),
(9,'BILL2016_009','塑料杯','日用品-杯子','个','350.00','1750.00',2,1,'2016-02-04 11:40:20',NULL,NULL,14),
(10,'BILL2016_010','豆瓣酱','食品-调料','瓶','200.00','2000.00',2,1,'2013-10-29 05:07:03',NULL,NULL,8),
(11,'BILL2016_011','海之蓝','饮料-国酒','瓶','50.00','10000.00',1,1,'2016-04-14 16:16:00',NULL,NULL,1),
(12,'BILL2016_012','芝华士','饮料-洋酒','瓶','20.00','6000.00',1,1,'2016-09-09 17:00:00',NULL,NULL,1),
(13,'BILL2016_013','长城红葡萄酒','饮料-红酒','瓶','60.00','800.00',2,1,'2016-11-14 15:23:00',NULL,NULL,1),
(14,'BILL2016_014','泰国香米','食品-大米','斤','400.00','5000.00',2,1,'2016-10-09 15:20:00',NULL,NULL,3),
(15,'BILL2016_015','东北大米','食品-大米','斤','600.00','4000.00',2,1,'2016-11-14 14:00:00',NULL,NULL,3),
(16,'BILL2016_016','可口可乐','饮料','瓶','2000.00','6000.00',2,1,'2012-03-27 13:03:01',NULL,NULL,2),
(17,'BILL2016_017','脉动','饮料','瓶','1500.00','4500.00',2,1,'2016-05-10 12:00:00',NULL,NULL,2),
(`smbms_provider`);
 
DROP TABLE IF EXISTS `smbms_provider`;
 
CREATE TABLE `smbms_provider` (
	`id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
	`proCode` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '供应商编码',
	`proName` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '供应商名称',
	`proDesc` VARCHAR(50) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '供应商详细描述',
	`proContact` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '供应商联系人',
	`proPhone` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '联系电话',
	`proAddress` VARCHAR(50) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '地址',
	`proFax` VARCHAR(20) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '传真',
	`createdBy` BIGINT(20) DEFAULT NULL COMMENT '创建者（userId）',
	`creationDate` DATETIME DEFAULT NULL COMMENT '创建时间',
	`modifyDate` DATETIME DEFAULT NULL COMMENT '更新时间',
	`modifyBy` BIGINT(20) DEFAULT NULL COMMENT '更新者（userId）',
	PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
INSERT  INTO `smbms_provider`(`id`,`proCode`,`proName`,`proDesc`,`proContact`,`proPhone`,`proAddress`,`proFax`,
`createdBy`,`creationDate`,`modifyDate`,`modifyBy`) 
VALUES (1,'BJ_GYS001','北京三木堂商贸有限公司','长期合作伙伴，主营产品:茅台、五粮液、郎酒、酒鬼酒、泸州老窖、赖茅酒、法国红酒等','张国强','13566667777','北京市丰台区育芳园北路','010-58858787',1,'2013-03-21 16:52:07',NULL,NULL),
(2,'HB_GYS001','石家庄帅益食品贸易有限公司','长期合作伙伴，主营产品:饮料、水饮料、植物蛋白饮料、休闲食品、果汁饮料、功能饮料等','王军','13309094212','河北省石家庄新华区','0311-67738876',1,'2016-04-13 04:20:40',NULL,NULL),
(3,'GZ_GYS001','深圳市泰香米业有限公司','初次合作伙伴，主营产品：良记金轮米,龙轮香米等','郑程瀚','13402013312','广东省深圳市福田区深南大道6006华丰大厦','0755-67776212',1,'2014-03-21 16:56:07',NULL,NULL),
(4,'GZ_GYS002','深圳市喜来客商贸有限公司','长期合作伙伴，主营产品：坚果炒货.果脯蜜饯.天然花茶.营养豆豆.特色美食.进口食品.海味零食.肉脯肉','林妮','18599897645','广东省深圳市福龙工业区B2栋3楼西','0755-67772341',1,'2013-03-22 16:52:07',NULL,NULL),
(5,'JS_GYS001','兴化佳美调味品厂','长期合作伙伴，主营产品：天然香辛料、鸡精、复合调味料','徐国洋','13754444221','江苏省兴化市林湖工业区','0523-21299098',1,'2015-11-22 16:52:07',NULL,NULL),
(6,'BJ_GYS002','北京纳福尔食用油有限公司','长期合作伙伴，主营产品：山茶油、大豆油、花生油、橄榄油等','马莺','13422235678','北京市朝阳区珠江帝景1号楼','010-588634233',1,'2012-03-21 17:52:07',NULL,NULL),
(7,'BJ_GYS003','北京国粮食用油有限公司','初次合作伙伴，主营产品：花生油、大豆油、小磨油等','王驰','13344441135','北京大兴青云店开发区','010-588134111',1,'2016-04-13 00:00:00',NULL,NULL),
(8,'ZJ_GYS001','慈溪市广和绿色食品厂','长期合作伙伴，主营产品：豆瓣酱、黄豆酱、甜面酱，辣椒，大蒜等农产品','薛圣丹','18099953223','浙江省宁波市慈溪周巷小安村','0574-34449090',1,'2013-11-21 06:02:07',NULL,NULL),
(9,'GX_GYS001','优百商贸有限公司','长期合作伙伴，主营产品：日化产品','李立国','13323566543','广西南宁市秀厢大道42-1号','0771-98861134',1,'2013-03-21 19:52:07',NULL,NULL),
(10,'JS_GYS002','南京火头军信息技术有限公司','长期合作伙伴，主营产品：不锈钢厨具等','陈女士','13098992113','江苏省南京市浦口区浦口大道1号新城总部大厦A座903室','025-86223345',1,'2013-03-25 16:52:07',NULL,NULL),
(11,'GZ_GYS003','广州市白云区美星五金制品厂','长期合作伙伴，主营产品：海绵床垫、坐垫、靠垫、海绵枕头、头枕等','梁天','13562276775','广州市白云区钟落潭镇福龙路20号','020-85542231',1,'2016-12-21 06:12:17',NULL,NULL),
(12,'BJ_GYS004','北京隆盛日化科技','长期合作伙伴，主营产品：日化环保清洗剂，家居洗涤专卖、洗涤用品网、墙体除霉剂、墙面霉菌清除剂等','孙欣','13689865678','北京市大兴区旧宫','010-35576786',1,'2014-11-21 12:51:11',NULL,NULL),
(13,'SD_GYS001','山东豪克华光联合发展有限公司','长期合作伙伴，主营产品：洗衣皂、洗衣粉、洗衣液、洗洁精、消杀类、香皂等','吴洪转','13245468787','山东济阳济北工业区仁和街21号','0531-53362445',1,'2015-01-28 10:52:07',NULL,NULL),
(14,'JS_GYS003','无锡喜源坤商行','长期合作伙伴，主营产品：日化品批销','周一清','18567674532','江苏无锡盛岸西路','0510-32274422',1,'2016-04-23 11:11:11',NULL,NULL),
(15,'ZJ_GYS002','乐摆日用品厂','长期合作伙伴，主营产品：各种中、高档塑料杯，塑料乐扣水杯（密封杯）、保鲜杯（保鲜盒）、广告杯、礼品杯','王世杰','13212331567','浙江省金华市义乌市义东路','0579-34452321',1,'2016-08-22 10:01:30',NULL,NULL);
 
DROP TABLE IF EXISTS `smbms_role`;
 
CREATE TABLE `smbms_role` (
  `id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `roleCode` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '角色编码',
  `roleName` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '角色名称',
  `createdBy` BIGINT(20) DEFAULT NULL COMMENT '创建者',
  `creationDate` DATETIME DEFAULT NULL COMMENT '创建时间',
  `modifyBy` BIGINT(20) DEFAULT NULL COMMENT '修改者',
  `modifyDate` DATETIME DEFAULT NULL COMMENT '修改时间',
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
INSERT  INTO `smbms_role`(`id`,`roleCode`,`roleName`,`createdBy`,`creationDate`,`modifyBy`,`modifyDate`) 
VALUES (1,'SMBMS_ADMIN','系统管理员',1,'2016-04-13 00:00:00',NULL,NULL),
(2,'SMBMS_MANAGER','经理',1,'2016-04-13 00:00:00',NULL,NULL),
(3,'SMBMS_EMPLOYEE','普通员工',1,'2016-04-13 00:00:00',NULL,NULL);
 
DROP TABLE IF EXISTS `smbms_user`;
 
CREATE TABLE `smbms_user` (
  `id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  `userCode` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '用户编码',
  `userName` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '用户名称',
  `userPassword` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '用户密码',
  `gender` INT(10) DEFAULT NULL COMMENT '性别（1:女、 2:男）',
  `birthday` DATE DEFAULT NULL COMMENT '出生日期',
  `phone` VARCHAR(15) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '手机',
  `address` VARCHAR(30) COLLATE utf8_unicode_ci DEFAULT NULL COMMENT '地址',
  `userRole` BIGINT(20) DEFAULT NULL COMMENT '用户角色（取自角色表-角色id）',
  `createdBy` BIGINT(20) DEFAULT NULL COMMENT '创建者（userId）',
  `creationDate` DATETIME DEFAULT NULL COMMENT '创建时间',
  `modifyBy` BIGINT(20) DEFAULT NULL COMMENT '更新者（userId）',
  `modifyDate` DATETIME DEFAULT NULL COMMENT '更新时间',
  PRIMARY KEY (`id`)
) ENGINE=INNODB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
 
INSERT  INTO `smbms_user`(`id`,`userCode`,`userName`,`userPassword`,`gender`,`birthday`,
`phone`,`address`,`userRole`,`createdBy`,`creationDate`,`modifyBy`,`modifyDate`) 
VALUES (1,'admin','系统管理员','1234567',1,'1983-10-10','13688889999','北京市海淀区成府路207号',1,1,'2013-03-21 16:52:07',NULL,NULL),
(2,'liming','李明','0000000',2,'1983-12-10','13688884457','北京市东城区前门东大街9号',2,1,'2014-12-31 19:52:09',NULL,NULL),
(5,'hanlubiao','韩路彪','0000000',2,'1984-06-05','18567542321','北京市朝阳区北辰中心12号',2,1,'2014-12-31 19:52:09',NULL,NULL),
(6,'zhanghua','张华','0000000',1,'1983-06-15','13544561111','北京市海淀区学院路61号',3,1,'2013-02-11 10:51:17',NULL,NULL),
(7,'wangyang','王洋','0000000',2,'1982-12-31','13444561124','北京市海淀区西二旗辉煌国际16层',3,1,'2014-06-11 19:09:07',NULL,NULL),
(8,'zhaoyan','赵燕','0000000',1,'1986-03-07','18098764545','北京市海淀区回龙观小区10号楼',3,1,'2016-04-21 13:54:07',NULL,NULL),
(10,'sunlei','孙磊','0000000',2,'1981-01-04','13387676765','北京市朝阳区管庄新月小区12楼',3,1,'2015-05-06 10:52:07',NULL,NULL),
(11,'sunxing','孙兴','0000000',2,'1978-03-12','13367890900','北京市朝阳区建国门南大街10号',3,1,'2016-11-09 16:51:17',NULL,NULL),
(12,'zhangchen','张晨','0000000',1,'1986-03-28','18098765434','朝阳区管庄路口北柏林爱乐三期13号楼',3,1,'2016-08-09 05:52:37',1,'2016-04-14 14:15:36'),
(13,'dengchao','邓超','0000000',2,'1981-11-04','13689674534','北京市海淀区北航家属院10号楼',3,1,'2016-07-11 08:02:47',NULL,NULL),
(14,'yangguo','杨过','0000000',2,'1980-01-01','13388886623','北京市朝阳区北苑家园茉莉园20号楼',3,1,'2015-02-01 03:52:07',NULL,NULL),
(15,'zhaomin','赵敏','0000000',1,'1987-12-04','18099897657','北京市昌平区天通苑3区12号楼',2,1,'2015-09-12 12:02:12',NULL,NULL);



CREATE DATABASE `ssmbuild`;
USE `ssmbuild`;
DROP TABLE IF EXISTS `books`;
CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT(11) NOT NULL COMMENT '数量',
`detail` VARCHAR(200) NOT NULL COMMENT '描述',
KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

INSERT INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

三完整参考内容

练习之前创建maven项目，并确保成功连接到数据库

3.1 项目结构

这里采用图片展示的方式来说明

3.2 pom.xml文件配置

注意版本的兼容问题

<build>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>

<dependencies>
	<!--mysql驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.29</version>
    </dependency>

    <!--mybatis-->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.6</version>
    </dependency>

    <!--junit-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <!--<scope>test</scope>-->
    </dependency>
    
    <!--lombok插件 -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.24</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

3.3 mybatis-config.xml文件内容

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--configuration核心配置文件-->
<configuration>
    <!--导入properties文件-->
    <properties resource="db.properties"/>

    <!--标准的日志工厂 STDOUT_LOGGING 标准日志输出-->
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
        <!--是否开启自动驼峰名规则(caml case)映射-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>

    <!--给实体类起别名:包扫描，官方推荐首字母小写的名字Student->student-->
    <typeAliases>
        <package name="com.yang.pojo"/>
    </typeAliases>
    <environments default="development">
        <environment id="development">
            <!--事务管理-->
            <transactionManager type="JDBC"/>
            <!--配置数据源-->
            <dataSource type="POOLED">
                <property name="driver" value="${driver}"/>
                <property name="url" value="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
       <package name="com.yang.dao"/>
    </mappers>
</configuration>

3.4 db.properties

driver和url的内容在连接Mysql5.0和Mysql8.0有所不同

driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/smbms?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
username=root
password=xxxxx

3.5 MybatisUtils.java文件配置

SqlSessionFactory–>SqlSession

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

/**
 * @author 缘友一世
 * @date 2022/7/20-16:49
 */
//SqlSessionFactory-->SqlSession
public class MybatisUtils {
    
    
    private static SqlSessionFactory sqlSessionFactory;
    static {
    
    
        try {
    
    
            //使用mybatis获取SqlSessionFactory对象
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
    
    
            e.printStackTrace();
        }
    }

    //既然有了 SqlSessionFactory，顾名思义，我们可以从中获得 SqlSession 的实例。
    // SqlSession 提供了在数据库执行 SQL 命令所需的所有方法。
    // 你可以通过 SqlSession 实例来直接执行已映射的 SQL 语句
    public static SqlSession getSession()
    {
    
    
        //设置自动提交事务
        return sqlSessionFactory.openSession(true);
    }
}

3.6 实体类

注意和数据库的属性对应

3.6.1 Bill

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.math.BigDecimal;
import java.sql.Date;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:46
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Bill {
    
    
    private Integer id;   //id
    private String billCode; //账单编码
    private String productName; //商品名称
    private String productDesc; //商品描述
    private String productUnit; //商品单位
    private BigDecimal productCount; //商品数量
    private BigDecimal totalPrice; //总金额
    private Integer isPayment; //是否支付
    private Integer providerId; //供应商ID
    private Integer createdBy; //创建者
    private Date creationDate; //创建时间
    private Integer modifyBy; //更新者
    private Date modifyDate;//更新时间
    private String providerName;//供应商名称
}

3.6.2 Provider

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.sql.Date;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:49
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Provider {
    
    
    private Integer id;   //id
    private String proCode; //供应商编码
    private String proName; //供应商名称
    private String proDesc; //供应商描述
    private String proContact; //供应商联系人
    private String proPhone; //供应商电话
    private String proAddress; //供应商地址
    private String proFax; //供应商传真
    private Integer createdBy; //创建者
    private Date creationDate; //创建时间
    private Date modifyDate;//更新时间
    private Integer modifyBy; //更新者
}

3.6.3 Role

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.sql.Date;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:50
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Role {
    
    
    private Integer id;   //id
    private String roleCode; //角色编码
    private String roleName; //角色名称
    private Integer createdBy; //创建者
    private Date creationDate; //创建时间
    private Integer modifyBy; //更新者
    private Date modifyDate;//更新时间
}

3.6.4 User

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.sql.Date;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:52
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {
    
    
    private Integer id; //id
    private String userCode; //用户编码
    private String userName; //用户名称
    private String userPassword; //用户密码
    private Integer gender;  //性别
    private Date birthday;  //出生日期
    private String phone;   //电话
    private String address; //地址
    private Integer userRole;    //用户角色
    private Integer createdBy;   //创建者
    private Date creationDate; //创建时间
    private Integer modifyBy;     //更新者
    private Date modifyDate;   //更新时间
    private Integer age;//年龄
    private String userRoleName;    //用户角色名称
}

3.7 Bill相关练习题

3.7.1 Bill接口


import com.yang.pojo.Bill;
import org.apache.ibatis.annotations.Param;

import java.math.BigInteger;
import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:53
 */
public interface BillMapper {
    
    
    /**
     * 根据供应商Id查询订单数量
     */
    int getBillCountByProviderId(@Param("providerId") Integer providerId);

    /**
     * 增加订单
     */
    int add(Bill bill);

    /**
     * 通过查询条件获取供应商列表-getBillList
     */
    List<Bill> getBillList(@Param("productName") String productName,
                                  @Param("providerId") String providerId,
                                  @Param("isPayment") String isPayment,
                                  @Param("from") Integer from,
                                  @Param("pageSize") Integer pageSize);

    /**
     * 通过条件查询，查询供货商数量
     * 根据 商品名称、供应商id、是否付款 查询订单总数
     */
    int getBillCount(@Param("productName") String productName,
                            @Param("providerId") int providerId,
                            @Param("isPayment") int isPayment);

    /**
     * 通过Id删除Bill
     */
    int deleteBillById(@Param("id") Integer id);

    /**
     * 通过Id获取Bill
     */
    Bill getBillById(@Param("id") Integer id);

    /**
     * 修改订单信息
     */
    int modify(Bill bill);

    /**
     * 根据供应商Id删除订单信息
     */
    int deleteBillByProviderId(@Param("providerId") Integer providerId);

}

3.7.2 BillMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yang.dao.Bill.BillMapper">
	<!--根据供应商Id查询订单数量-->
    <select id="getBillCountByProviderId" resultType="java.lang.Integer" parameterType="integer">
        select count(*) from smbms_bill where providerId=#{providerId};
    </select>

    <insert id="add" parameterType="bill" >
        insert into smbms.smbms_bill (id,billCode,productName,productDesc,productUnit,
                                      productCount,totalPrice,isPayment,providerId,
                                      createdBy,creationDate)
        values
        (#{id},#{billCode},#{productName},#{productDesc},#{productUnit},
         #{productCount},#{totalPrice},#{isPayment},#{providerId},#{createdBy},#{creationDate})
    </insert>

    <!--通过条件查询，查询供货商数量,模糊查询-->
    <select id="getBillList" resultType="bill">
        select * from smbms.smbms_bill
        <where>
            <if test="productName !=null">
                and productName like concat ('%',#{productName},'%')
            </if>
            <if test="providerId !=null">
                and providerId like concat('%',#{providerId},'%')
            </if>
            <if test="isPayment !=null">
                and isPayment like concat ('%',#{isPayment},'%')
            </if>

        </where>
        limit #{from},#{pageSize}
    </select>

    <select id="getBillCount" resultType="int">
        select count(1) from smbms_bill b,smbms_provider p
        <where>
            b.providerId=p.id
            <if test="productName != null and productName != ''">
                and productName like concat ('%',#{productName},'%')
            </if>
            <if test="providerId != null">
                and providerId = #{providerId}
            </if>
            <if test="isPayment != null">
                and isPayment = #{isPayment}
            </if>
        </where>
    </select>

    <delete id="deleteBillById" parameterType="Integer">
        delete from smbms_bill where id=#{id}
    </delete>

    <select id="getBillById" parameterType="Integer" resultType="bill">
        select * from smbms_bill where id=#{id}
    </select>

    <update id="modify" parameterType="bill">
        update smbms_bill
        <set>
            <if test="productName!=null">productName=#{productName}</if>
        </set>
        <where>
            id=#{id}
        </where>
    </update>

    <delete id="deleteBillByProviderId" parameterType="Integer">
        delete from smbms_bill
        <where>
            providerId=#{providerId}
        </where>
    </delete>
</mapper>

3.7.3 Bill测试

import com.yang.dao.Bill.BillMapper;
import com.yang.pojo.Bill;
import com.yang.utils.MybatisUtils;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;

import java.math.BigDecimal;
import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-15:07
 */
public class TestBillMapper {
    
    
    @Test
    public void getBillCountByProviderId() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        int res = mapper.getBillCountByProviderId(2);
        System.out.println("该供应商的订单数量为："+res);
        sqlSession.close();
    }

    @Test
    public void add() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);

        Bill bill = new Bill();
        bill.setId(19);
        bill.setBillCode("BILL2016_019");
        bill.setProductName("香飘飘");
        bill.setProductDesc("饮料");
        bill.setProductUnit("瓶");
        bill.setProductCount(BigDecimal.valueOf(3000.00));
        bill.setTotalPrice(BigDecimal.valueOf(6000.00));
        bill.setIsPayment(2);
        bill.setCreatedBy(1);
        bill.setProviderId(2);
        int res = mapper.add(bill);
        if(res>0) {
    
    
            System.out.println("插入成功");
        }
        sqlSession.close();
    }

    //模糊查询
    @Test
    public void getBillList()throws Exception{
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        List<Bill> billList = mapper.getBillList("油", "1", "1", 0,2);
        for (Bill bill : billList) {
    
    
            System.out.println(bill);
        }
        sqlSession.close();
    }

    @Test
    public void getBillCount() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        int billCount = mapper.getBillCount("安",2,2);
        System.out.println("供货商数量为："+billCount);
        sqlSession.close();
    }
    //删除
    @Test
    public void deleteBillById() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        int res = mapper.deleteBillById(19);
        if(res>0) {
    
    
            System.out.println("删除成功！");
        }
        sqlSession.close();
    }

    //查询 getBillById
    @Test
    public void getBillById() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        Bill bill = mapper.getBillById(19);
        System.out.println(bill);
        sqlSession.close();
    }
    //修改
    @Test
    public void modify() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        Bill bill = new Bill();
        bill.setProductName("安慕希");
        bill.setId(19);
        mapper.modify(bill);
        sqlSession.close();
    }

    @Test
    public void deleteBillByProviderId() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        BillMapper mapper = sqlSession.getMapper(BillMapper.class);
        int res = mapper.deleteBillByProviderId(20);
        if( res>0) {
    
    
            System.out.println("删除成功！");
        }
        sqlSession.close();
    }
}

3.8 Provider相关练习

3.8.1 Provider接口

import com.yang.pojo.Provider;
import org.apache.ibatis.annotations.Param;

import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-14:57
 */
public interface ProviderMapper {
    
    
    //增加用户信息
    int add( Provider provider);

    //通过条件查询providerList
    List<Provider> getProviderList(@Param("proName") String proName,
                                   @Param("proCode") String proCode,
                                   @Param("from") Integer currentPageNo,
                                   @Param("pageSize") Integer pageSize);

    //获取供应商列表
    List<Provider> getProList();

    //通过条件查询供应商记录数
    int getProviderCount(@Param("proName") String proName,
                         @Param("proCode") String proCode);

    //通过供应商Id删除供应商信息
    int deleteProviderById(@Param("id") Integer delId);

    //根据供应商Id获取供应商信息
    Provider getProviderById(@Param("id") Integer id);

    //修改供应商
    int modify(Provider provider);
}

3.8.2 ProviderMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yang.dao.Provider.ProviderMapper">
    <insert id="add" parameterType="provider">
        insert into smbms_provider(proCode,proName,proDesc,proContact,proPhone,proAddress,proFax,createdBy,creationDate)
        values(#{proCode},#{proName},#{proDesc},#{proContact},#{proPhone},#{proAddress},#{proFax},#{createdBy},#{creationDate})
    </insert>

    <select id="getProviderList" parameterType="String" resultType="provider">
        select * from smbms.smbms_provider
        <where>
            <if test="proName !=null">
                and proName like concat('%',#{proName},'%')
            </if>
            <if test="proCode !=null">
                and proCode like concat ('%',#{proCode},'%')
            </if>
        </where>
    </select>

    <select id="getProList" resultType="Provider">
        select * from smbms_provider;
    </select>

    <select id="getProviderCount" resultType="Integer">
        select count(1) from smbms_provider
        <where>
            <if test="proName != null">proName like CONCAT('%',#{proName},'%')</if>
            <if test="proCode != null">and proCode like CONCAT('%',#{proCode},'%')</if>
        </where>
    </select>

    <delete id="deleteProviderById">
        delete from smbms_provider where id=#{id};
    </delete>

    <select id="getProviderById" resultType="Provider">
        select * from smbms_provider where id = #{id}
    </select>

    <update id="modify" parameterType="provider">
        update smbms_provider
        <trim prefix="set" suffixOverrides="," suffix="where id=#{id}">
            <if test="proName!=null">proName=#{proName},</if>
            <if test="proCode!=null">proCode=#{proCode},</if>
            <if test="proDesc!=null">proDesc=#{proDesc},</if>
            <if test="proContact!=null">proContact=#{proContact},</if>
            <if test="proPhone!=null">proPhone=#{proPhone},</if>
            <if test="proAddress!=null">proAddress=#{proAddress},</if>
            <if test="proFax!=null">proFax=#{proFax},</if>
            <if test="createdBy!=null">createdBy=#{createdBy},</if>
            <if test="creationDate!=null">creationDate=#{creationDate},</if>
            <if test="modifyDate!=null">modifyDate=#{modifyDate},</if>
            <if test="modifyBy!=null">modifyBy=#{modifyBy}</if>
        </trim>
    </update>
</mapper>

3.8.3 Provider测试

/**
 * @author 缘友一世
 * @date 2022/7/23-15:07
 */
public class TestProviderMapper {
    
    
    @Test
    public void add() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession(); 
        ProviderMapper mapper = sqlSession.getMapper(ProviderMapper.class);
        Provider provider = new Provider(21,"ZJ_GYS002",
                "乐摆日用品厂2","长期合作伙伴，主营产品：2",
                "王世杰","13212331567",
                "浙江省金华市义乌市义东路",
                "0579-34452321",1,null,
                null,null);
        mapper.add(provider);
        sqlSession.close();
    }

    @Test
    public void getProviderList(){
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        ProviderMapper mapper = sqlSession.getMapper(ProviderMapper.class);
        /*Provider provider = new Provider();
        provider.setProName("张");
        provider.setProCode("新");*/
        List<Provider> providerList = mapper.getProviderList("日","00",null,null);
        for (Provider provider : providerList) {
    
    
            System.out.println(provider);
        }
        sqlSession.close();
    }

    @Test
    public void getProList() {
    
    
        SqlSession sqlSession = MybatisUtils.getSession();
        ProviderMapper mapper = sqlSession.getMapper(ProviderMapper.class);
        List<Provider> proLists = mapper.getProList();
        for(Provider provider:proLists) {
    
    
            System.out.println(provider);
        }
        sqlSession.close();
    }

    @Test
    public void getProviderCount(){
    
    
        SqlSession session = MybatisUtils.getSession();
        ProviderMapper mapper = session.getMapper(ProviderMapper.class);
        int providerCount = mapper.getProviderCount("深圳", "GZ");
        System.out.println(providerCount);
        session.close();
    }

    @Test
    public void deleteProviderById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        ProviderMapper mapper = session.getMapper(ProviderMapper.class);
        mapper.deleteProviderById(17);
        session.close();
    }

    @Test
    public void getProviderById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        ProviderMapper mapper = session.getMapper(ProviderMapper.class);
        mapper.getProviderById(16);
        session.close();
    }

    @Test
    public void modify() {
    
    
        SqlSession session = MybatisUtils.getSession();
        ProviderMapper mapper = session.getMapper(ProviderMapper.class);
        mapper.modify(new Provider(16,"ZJ_GYS002","安徽皮革厂",null,null,
                null,null,null,null,null,null,null));
        session.close();
    }

}

3.9 RoleMapper相关练习

3.9.1 Role接口

import com.yang.pojo.Role;
import org.apache.ibatis.annotations.Param;

import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-15:02
 */
public interface RoleMapper {
    
    
    //获取角色列表
    List<Role> getRoleList();

    //增加角色信息
    int add(Role role);

    //通过Id删除Role
    int deleteRoleById(@Param("id") Integer delId);

    //修改角色信息
    int modify(Role role);

    //通过Id获取role
    Role getRoleById(@Param("id") Integer id);

    //根据roleCode，进行角色编码的唯一性验证
    int roleCodeIsExist(@Param("roleCode") String roleCode);
}

3.9.2 RoleMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yang.dao.Role.RoleMapper">
    <select id="getRoleList" resultType="Role">
        select * from smbms_role;
    </select>

    <insert id="add" parameterType="Role">
        insert into smbms_role values (#{id},#{roleCode},#{roleName},#{createdBy},
                                       #{creationDate},#{modifyBy},#{modifyDate});
    </insert>

    <delete id="deleteRoleById" parameterType="Integer">
        delete from smbms_role where id = #{id};
    </delete>

    <update id="modify" parameterType="Role">
        update smbms_role
        <set>
            <if test="roleCode != null">
                roleCode=#{roleCode},
            </if>
            <if test="roleName != null">
                roleName=#{roleName},
            </if>
            <if test="createdBy != null">
                createdBy=#{createdBy},
            </if>
            <if test="creationDate != null">
                creationDate=#{creationDate},
            </if>
            <if test="modifyBy != null">
                modifyBy=#{modifyBy},
            </if>
            <if test="modifyDate != null">
                modifyDate=#{modifyDate}
            </if>
        </set>
        where id = #{id}
    </update>

    <select id="getRoleById" resultType="Role">
        select * from smbms_role where id = #{id};
    </select>
    
    <select id="roleCodeIsExist" parameterType="String" resultType="Integer">
        select count(*) from smbms_role where roleCode=#{roleCode}
    </select>

</mapper>

3.9.3 Role测试

import com.yang.dao.Role.RoleMapper;
import com.yang.pojo.Role;
import com.yang.utils.MybatisUtils;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.sql.Date;
import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-15:08
 */
public class TestRoleMapper {
    
    

    /*测试一*/
    @Test
    public void getRoleList(){
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        List<Role> roleList = mapper.getRoleList();
        for (Role role : roleList) {
    
    
            System.out.println(role);
        }
        session.close();
    }

    @Test
    public void add() {
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        mapper.add(new Role(4,"SMBMS_Boss","老板",1, null,null,null));
        session.close();
    }

    @Test
    public void deleteRoleById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        mapper.deleteRoleById(4);
        session.close();
    }

    @Test
    public void modify()  {
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        mapper.modify(new Role(1,null,null,null,null,2, null));
        session.close();
    }

    @Test
    public void getRoleById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        Role role = mapper.getRoleById(2);
        System.out.println(role);
        session.close();
    }

    @Test
    public void roleCodeIsExist(){
    
    
        SqlSession session = MybatisUtils.getSession();
        RoleMapper mapper = session.getMapper(RoleMapper.class);
        int i = mapper.roleCodeIsExist("SMBMS_ADMIN");
        System.out.println(i);
        session.close();
    }

}

3.10 User相关练习

3.10.1 User接口

package com.yang.dao.User;

import com.yang.pojo.User;
import org.apache.ibatis.annotations.Param;

import java.util.HashMap;
import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-15:04
 */
public interface UserMapper {
    
    
    //通过userCode获取User
    public User getLoginUser(@Param("userCode") String userCode);

    //增加用户信息
    public int add(HashMap<String, Object> map);

    //通过条件查询userList
    public List<User> getUserList(@Param("userName") String userName,
                                  @Param("userRole") Integer userRole,
                                  @Param("from") Integer from,
                                  @Param("pageSize") Integer pageSize);

    //通过条件查询-用户记录数
    public int getUserCount(@Param("userName") String userName,
                            @Param("userRole") Integer userRole);

    //通过userId删除user
    public int deleteUserById(@Param("id") Integer id);

    //通过useId获取user
    public User getUserById(@Param("id") Integer id);

    //修改用户信息
    public int modify(User user);

    //修改当前用户密码
    public int updatePwd(@Param("id") Integer id,@Param("pwd") String pwd);
}

3.10.2 UserMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yang.dao.User.UserMapper">
    <select id="getLoginUser" parameterType="String" resultType="User">
        select * from smbms_user
        <trim prefix="where">
            <if test="userCode != null">
                userCode = #{userCode}
            </if>
        </trim>
    </select>

    <insert id="add" parameterType="map">
        insert into smbms_user values (#{id},#{userCode},#{userName},#{userPassword},#{gender},#{birthday},
                                       #{phone},#{address},#{userRole},#{createdBy},#{creationDate},#{modifyBy}
                                          ,#{modifyDate});
    </insert>

    <!--多对一 按照结果嵌套查询-->
    <select id="getUserList" resultType="user">
        select u.*,r.roleName from smbms_user u,smbms_role r where  u.userRole=r.id
        <if test="userRole!= null">and u.userRole = #{userRole} </if>
        <if test="userName!= null and userName!=''">and u.userName like CONCAT('%',#{userName},'%')</if>
        order by creationDate DESC limit #{from},#{pageSize}
    </select>

    <select id="getUserCount" resultType="Integer">
        select count(1) as count from smbms_user u,smbms_role r where u.userRole=r.id
        <if test="userRole!=null">and userRole=#{userRole}</if>
        <if test="userName!=null and userName!=''">and userName like CONCAT('%',#{userName},'%')</if>
    </select>

    <delete id="deleteUserById" parameterType="Integer">
        delete from smbms_user where id = #{id};
    </delete>

    <select id="getUserById" resultType="User">
        select * from smbms_user where id = #{id};
    </select>

    <update id="modify" parameterType="Role">
    update smbms_user
    <trim prefix="set" suffixOverrides="," suffix="where id = #{id}">
        <if test="userCode != null">
            userCode=#{userCode},
        </if>
        <if test="userName != null">
            userName=#{userName},
        </if>
        <if test="userPassword != null">
            userPassword=#{userPassword},
        </if>
        <if test="gender != null">
            gender=#{gender},
        </if>
        <if test="birthday != null">
            birthday=#{birthday},
        </if>
        <if test="phone != null">
            phone=#{phone},
        </if>
        <if test="address != null">
            address=#{address},
        </if>
        <if test="userRole != null">
            userRole=#{userRole},
        </if>
        <if test="createdBy != null">
            createdBy=#{createdBy},
        </if>
        <if test="creationDate != null">
            creationDate=#{creationDate},
        </if>
        <if test="modifyBy != null">
            modifyBy=#{modifyBy},
        </if>
        <if test="modifyDate != null">
            modifyDate=#{modifyDate}
        </if>
    </trim>
    </update>

    <update id="updatePwd">
        update smbms_user set userPassword = #{pwd} where id = #{id}
    </update>

</mapper>

3.10.3 User测试

import com.yang.dao.User.UserMapper;
import com.yang.pojo.User;
import com.yang.utils.MybatisUtils;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

/**
 * @author 缘友一世
 * @date 2022/7/23-15:07
 */
public class TestUserMapper {
    
    
    //封装获取当前时间的函数
    public static Date getCurrentDate() throws ParseException {
    
    
        Date date=new Date();//获取当前的时间
        SimpleDateFormat sd=new SimpleDateFormat("yyyy:MM:dd HH:mm:ss");//用这种格式去格式化，与数据库里的格式保持一致
        /*System.out.println(sd.format(date));*/
        String format = sd.format(date); //转成String
        return sd.parse(format);
    }

    @Test
    public void getLoginUser(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        User user = mapper.getLoginUser("liming");
        System.out.println(user);
        session.close();
    }

    @Test
    public void add() throws ParseException {
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        HashMap<String, Object> map = new HashMap<String, Object>();
        map.put("id",16);
        map.put("userCode","duxuan");
        map.put("userName","杜轩");
        map.put("userPassword","root");
        map.put("gender",1);
        map.put("birthday",null);
        map.put("phone","110");
        map.put("address","上海");
        map.put("userRole",3);
        map.put("createdBy",1);
        map.put("creationDate",getCurrentDate());
        mapper.add(map);
        session.close();
    }

    @Test
    public void getUserList(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        List<User> users = mapper.getUserList("孙", 3, 0, 30);
        for (User user : users) {
    
    
            System.out.println(user.toString());
        }
        session.close();
    }

    @Test
    public void getUserCount(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        int times = mapper.getUserCount("邓超", 3);
        System.out.println(times);
        session.close();
    }

    @Test
    public void deleteUserById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        mapper.deleteUserById(16);
        session.close();
    }

    @Test
    public void getUserById(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        User user = mapper.getUserById(15);
        System.out.println(user);
        session.close();
    }

    @Test
    public void modify(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        User user = new User();
        user.setId(16);
        user.setUserName("杜轩1");
        mapper.modify(user);
        session.close();
    }

    @Test
    public void updatePwd(){
    
    
        SqlSession session = MybatisUtils.getSession();
        UserMapper mapper = session.getMapper(UserMapper.class);
        mapper.updatePwd(16,"superRoot");
        session.close();
    }
}

关于Mybatis的深入学习(4)之动态SQL二十四道练习

文章目录

一环境准备

1.1 用到的工具

1.2 用到的数据库源码

三完整参考内容

3.1 项目结构

3.2 pom.xml文件配置

3.3 mybatis-config.xml文件内容

3.4 db.properties

3.5 MybatisUtils.java文件配置

3.6 实体类

3.6.1 Bill

3.6.2 Provider

3.6.3 Role

3.6.4 User

3.7 Bill相关练习题

3.7.1 Bill接口

3.7.2 BillMapper.xml文件

3.7.3 Bill测试

3.8 Provider相关练习

3.8.1 Provider接口

3.8.2 ProviderMapper.xml文件

3.8.3 Provider测试

3.9 RoleMapper相关练习

3.9.1 Role接口

3.9.2 RoleMapper.xml文件

3.9.3 Role测试

3.10 User相关练习

3.10.1 User接口

3.10.2 UserMapper.xml文件

3.10.3 User测试

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关于Mybatis的深入学习(4)之动态SQL二十四道练习

文章目录

一 环境准备

1.1 用到的工具

1.2 用到的数据库源码

三 完整参考内容

3.1 项目结构

3.2 pom.xml文件配置

3.3 mybatis-config.xml文件内容

3.4 db.properties

3.5 MybatisUtils.java文件配置

3.6 实体类

3.6.1 Bill

3.6.2 Provider

3.6.3 Role

3.6.4 User

3.7 Bill相关练习题

3.7.1 Bill接口

3.7.2 BillMapper.xml文件

3.7.3 Bill测试

3.8 Provider相关练习

3.8.1 Provider接口

3.8.2 ProviderMapper.xml文件

3.8.3 Provider测试

3.9 RoleMapper相关练习

3.9.1 Role接口

3.9.2 RoleMapper.xml文件

3.9.3 Role测试

3.10 User相关练习

3.10.1 User接口

3.10.2 UserMapper.xml文件

3.10.3 User测试

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一环境准备

三完整参考内容