mybatis学习(一)

 

1、Mybatis下载：

https://github.com/mybatis/mybatis-3/releases

 

 

2、环境搭建：

新建Java web项目，目录结构如下：

 

1）将mybatis-3.1.1jar【mybatis核心jar】、mysql-connector-java-5.1.7-bin.jar【mysql连接驱动】放在WEB-INF目录下的lib目录中，全部选中，然后全部选中，鼠标右键单击add to buildPath(My Eclipse8.5会自动添加，10.7版本的需要手动添加)

2）my eclipse 添加dtd文件：

window==> preferences==>输入xml===>点击 XML CatLog====》

找到这2个文件，按如下方式添加，Config 的key：    -//mybatis.org//DTD Config 3.0//EN，Mapper 的key：  -//mybatis.org//DTD Mapper 3.0//EN

添加好如下：

3）利用dtd模版创建RoleDao.xml ,UserDao.xml和mybatis-config.xml（具体步骤省略）

4）创建数据库和表，代码如下：

/*
SQLyog 企业版 - MySQL GUI v8.14 
MySQL - 5.5.40 : Database - smbms
*********************************************************************
*/


/*!40101 SET NAMES utf8 */;

/*!40101 SET SQL_MODE=''*/;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

CREATE DATABASE /*!32312 IF NOT EXISTS*/`smbms` /*!40100 DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci */;
smbmssmbms_user
USE `smbms`;

/*Table structure for table `smbms_address` */

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;

/*Data for the table `smbms_address` */

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);

/*Table structure for table `smbms_bill` */

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;

/*Data for the table `smbms_bill` */

INSERT  INTO `smbms_bill`(`id`,`billCode`,`productName`,`productDesc`,`productUnit`,`productCount`,`totalPrice`,`isPayment`,`createdBy`,`creationDate`,`modifyBy`,`modifyDate`,`providerId`) VALUES (1,'BILL2016_001','洗发水、护发素','日用品-洗发、护发','瓶','500.00','25000.00',2,1,'2014-12-14 13:02:03',NULL,NULL,13),(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),(18,'BILL2016_018','哇哈哈','饮料','瓶','2000.00','4000.00',2,1,'2015-11-24 15:12:03',NULL,NULL,2);

/*Table structure for table `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;

/*Data for the table `smbms_provider` */

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);

/*Table structure for table `smbms_role` */

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;

/*Data for the table `smbms_role` */

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);

/*Table structure for table `smbms_user` */

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;

/*Data for the table `smbms_user` */

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);

/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;


select * from smbms_bill
select * from smbms_user

5）根据数据库字userbiao he role 表的字段创建2个实体类：

package cn.smbms.xsh.entity;

public class User {

    private Integer id;
    private String userCode;
    private String userName;
    private String userPassword;
    private Integer gender;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserCode() {
        return userCode;
    }

    public void setUserCode(String userCode) {
        this.userCode = userCode;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUsrePassword() {
        return userPassword;
    }

    public void setUsrePassword(String usrePassword) {
        this.userPassword = usrePassword;
    }

    public Integer getGender() {
        return gender;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", userCode=" + userCode + ", userName="
                + userName + ", usrePassword=" + userPassword + ", gender="
                + gender + "]";
    }

}

package cn.smbms.xsh.entity;

import java.util.Date;

public class Role {

    private Integer id;//角色编号
    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;//修改者
    private Date modifyDate;//修改时间

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getRoleCode() {
        return roleCode;
    }

    public void setRoleCode(String roleCode) {
        this.roleCode = roleCode;
    }

    public String getRoleName() {
        return roleName;
    }

    public void setRoleName(String roleName) {
        this.roleName = roleName;
    }

    public Integer getCreatedBy() {
        return createdBy;
    }

    public void setCreatedBy(Integer createdBy) {
        this.createdBy = createdBy;
    }

    public Date getCreationDate() {
        return creationDate;
    }

    public void setCreationDate(Date creationDate) {
        this.creationDate = creationDate;
    }

    public Integer getModifyBy() {
        return modifyBy;
    }

    public void setModifyBy(Integer modifyBy) {
        this.modifyBy = modifyBy;
    }

    public Date getModifyDate() {
        return modifyDate;
    }

    public void setModifyDate(Date modifyDate) {
        this.modifyDate = modifyDate;
    }

    @Override
    public String toString() {
        return "Role [id=" + id + ", roleCode=" + roleCode + ", roleName="
                + roleName + ", createdBy=" + createdBy + ", creationDate="
                + creationDate + ", modifyBy=" + modifyBy + ", modifyDate="
                + modifyDate + "]";
    }

}

6）创建数据访问层的dao接口，定义增删改查的方法：

insert,select ,update,delete标签中的id，必须是dao接口中定义的id,

package cn.smbms.xsh.dao;

import java.util.List;

import cn.smbms.xsh.entity.User;

public interface UserDao {
    
    List<User> getAllUser();
    
    Integer addUser(User user);
    
    Integer update(User user);
    
    Integer delete(Integer id);

}

package cn.smbms.xsh.dao;

import java.util.List;

import cn.smbms.xsh.entity.Role;

public interface RoleDao {
    /**
     * 获取所有role
     * 
     * @return
     */
    List<Role> getAll();

    /**
     * 删除
     * 
     * @param id
     * @return
     */
    Integer delete(Integer id);

    /**
     * 修改
     * 
     * @param role
     * @return
     */
    Integer update(Role role);

    /**
     * 增加
     * 
     * @param role
     * @return
     */
    Integer add(Role role);
}

7）创建User，role的映射xml文件，其作用相当于使用JDBC方式进行增删改查时写在数据访问层dao接口实现类里边的sql语句，原来在JDBC方式下增删改是如下这么写的：

在mybatis中，在映射接口xml文件中写sql语句,相当于上面的dao接口实现类：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "mybatis-3-mapper.dtd" >
<mapper namespace="cn.smbms.xsh.dao.UserDao">
    <select id="getAllUser" resultType="User">
        select * from smbms_user
    </select>
    
    <insert id="addUser">
            INSERT INTO smbms.smbms_user 
                (id, 
                userCode, 
                userName, 
                userPassword, 
                gender
                )
                VALUES
                (null, 
                #{userCode}, 
                #{userName}, 
                #{userPassword}, 
                #{gender}
                );
    </insert>
    
    <update id="update">
            UPDATE smbms.smbms_user 
            SET
            userCode = #{userCode} , 
            userName = #{userName} , 
            userPassword = #{userPassword} , 
            gender = #{gender}  
            WHERE
            id = #{id} ;
    </update>

    <delete id="delete">
        delete from smbms_user where id = #{id}
    </delete>
</mapper>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "mybatis-3-mapper.dtd" >
<mapper namespace="cn.smbms.xsh.dao.RoleDao">

    <select id="getAll" resultType="Role">
        SELECT     id, roleCode, roleName, createdBy, creationDate, 
        modifyBy,modifyDate FROM     smbms_role 
    </select>
    
    <insert id="add" >
        INSERT INTO smbms_role 
        (id, roleCode, roleName, createdBy, creationDate, modifyBy, modifyDate    )
        VALUES
        (null,     #{roleCode}, #{roleName}, #{createdBy}, now(), null, null    );
    </insert>
    
    <update id="update">
        UPDATE smbms.smbms_role 
        SET
        roleCode = #{roleCode} , 
        roleName = #{roleName}, 
        modifyBy = #{modifyBy} , 
        modifyDate = now()
        WHERE
        id = #{id} 
    </update>
    
    <delete id="delete">
        delete from smbms_role where id=#{id}
    </delete>
    
</mapper>

8）mybatis-config.xml配置文件配置：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "mybatis-3-config.dtd" >
<configuration>
    <!-- 读取数据库配置文件信息 -->
    <properties resource="database.properties">
    </properties>
    <!-- 配置别名 -->
    <typeAliases>
        <!-- 通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean, 并且默认设置一个别名，默认的名字为： 
            javabean 的首字母小写的非限定类名来作为它的别名 -->
        <package name="cn.smbms.xsh"></package>
    </typeAliases>
    <!-- 配置mybatis的多套运行环境，default的值必须是所有environment标签的id属性中的一个值 -->
    <environments default="development">
        <environment id="development">
            <!-- 事务管理方式定义：采用JDBC方式 -->
            <transactionManager type="JDBC"></transactionManager>
            <!-- 数据源：采用连接池POOLED -->
            <dataSource type="POOLED">
                <!-- 读取数据库配置文件database.properties里边的数据库配置信息 value获取配置文件中定义的属性的值 -->
                <property name="driver" value="${driver}" />
                <property name="url" value="${url}" />
                <property name="username" value="${user}" />
                <property name="password" value="${password}" />
            </dataSource>
        </environment>
    </environments>
    <!-- 映射接口xml文件的路径，告诉mybatis去哪里找到sql映射文件 -->
    <mappers>
        <!-- resource属性的值是sql映射文件的路径 -->
        <mapper resource="cn/smbms/xsh/dao/RoleDao.xml"></mapper>
        <mapper resource="cn/smbms/xsh/dao/UserDao.xml"></mapper>

    </mappers>
</configuration>

database.properties数据库配置文件内容如下：

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/smbms?useUnicode=true&characterEncoding=utf-8
user=root
password=root

 9) 创建Junit TestCase测试类进行测试

package cn.smbms.xsh.test;

import java.io.InputStream;
import java.util.List;

import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.log4j.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import cn.smbms.xsh.dao.UserDao;
import cn.smbms.xsh.entity.User;

public class UserDaoTest {
    
    private Logger logger = Logger.getLogger(UserDaoTest.class);
    SqlSession sqlSession =null;
    UserDao dao = null;
//@Before 表示每次执行    @Test标签后面的测试方法时，先执行@Before后面的代码
    @Before
    public void before(){
        //mybatis-config.xml配置文件信息读取到输入流中
        InputStream is = UserDaoTest.class.getClassLoader().getResourceAsStream("mybatis-config.xml");
        //创建sqlSessionFactoryBuilder对象
        SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
        //创建SqlSessionFactory，也就是sqlSession工厂对象
        SqlSessionFactory factory = builder.build(is);
        //开启sqlSession会话
        sqlSession = factory.openSession();
        //获取UserDao代理
        dao = sqlSession.getMapper(UserDao.class);
    }
    
    @Test
    public void testGetAll(){
        List<User> userList = dao.getAllUser();
        for (User user : userList) {
            logger.debug(user);
        }
        
    }
    
    @Test
    public void testAddUser(){
        User user = new User();
        user.setGender(1);
        user.setUserCode("hanmeimei");
        user.setUserName("hanmei");
        user.setUsrePassword("123456");
//        user.setId(id);
        System.out.println(dao.addUser(user));
        
    }
    
    @Test
    public void testUpdate(){
        User user = new User();
        user.setUserCode("hanmeimei");
        user.setUserName("韩梅梅");
        user.setUsrePassword("123456");
        user.setGender(1);
        user.setId(16);
        System.out.println(dao.update(user));
        
    }
    
    @Test
    public void testDelete(){
        System.out.println(dao.delete(16));
    }
    
    @After
    public void after(){
        sqlSession.commit();
        sqlSession.close();
        System.out.println("over");
    }

}