MyBatis框架介绍
MyBatis是一个优秀的数据持久层框架，在实体类和SQL语句之间建立映射关系是一种半自动化的ORM实现，其封装性要低于Hibernate，性能优越，并且小巧，简单易学，应用也越来越广泛
MyBaits实现简单的对数据库的增删改查
首先写创建数据库及数据表格内容如下：
/*
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 */; 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` int(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` int(10) 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,'0000-00-00 00:00:00',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 */;
MySQL数据库数据
然后我们开始配置MyBatis框架
1.创建我们的项目和包名
dao、pojo、test、util
然后开始让项目跟数据库进行链接
我这边呢是新创建了一个resources文件夹里面放入了连接数据库内容
database.properties文件内容如下（我使用的jar包是MySQL5.1版本）
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/smbms?useUnicode=true&characterEncoding=utf8&&useSSL=false&serverTimezone=UTC
username=root
password=123456
log4j.properties文件内容如下：
log4j.rootLogger=DEBUG,CONSOLE,file
#log4j.rootLogger=ERROR,ROLLING_FILE
log4j.logger.cn.smbms.dao=debug
log4j.logger.com.ibatis=debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug
log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug
log4j.logger.java.sql.ResultSet=debug
log4j.logger.org.tuckey.web.filters.urlrewrite.UrlRewriteFilter=debug ######################################################################################
# Console Appender \u65e5\u5fd7\u5728\u63a7\u5236\u8f93\u51fa\u914d\u7f6e
######################################################################################
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.Threshold=error
log4j.appender.CONSOLE.Target=System.out
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern= [%p] %d %c - %m%n ######################################################################################
# DailyRolling File \u6bcf\u5929\u4ea7\u751f\u4e00\u4e2a\u65e5\u5fd7\u6587\u4ef6\uff0c\u6587\u4ef6\u540d\u683c\u5f0f:log2009-09-11
######################################################################################
log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
log4j.appender.file.DatePattern=yyyy-MM-dd
log4j.appender.file.File=log.log
log4j.appender.file.Append=true
log4j.appender.file.Threshold=error
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-M-d HH:mm:ss}%x[%5p](%F:%L) %m%n log4j.logger.com.opensymphony.xwork2=error
看到我旁边的这位老同志了吗请点开它查看代码
然后写入MyBatis的核心配置文件MyBatis-config.xml文件（小伙伴记得导入jar包哦）
<?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>
<!-- 引入database.properties -->
<properties resource="database.properties"/>
<!-- 配置mybatis日志log4j -->
<settings>
<setting name="logImpl" value="LOG4J"/>
<!-- 映射级别3种
1.PARTIAL:默认，默认是自动匹配所有属性(嵌套关系，1对1查询association,1对多查询collection)
2.NONE:禁止自动匹配
3.FULL:全自动匹配
-->
<setting name="autoMappingBehavior" value="PARTIAL"/>
</settings>
<!-- 设置别名 -->
<typeAliases>
<package name="pojo"/>
</typeAliases>
<!-- 搭建多套mybatis的环境 -->
<!-- 默认环境 -->
<environments default="development">
<environment id="development">
<!-- 配置jdbc事务管理 -->
<transactionManager type="JDBC"></transactionManager>
<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>
<!-- 配置sql映射文件路径 -->
<mappers>
<mapper resource="dao/UserMapper.xml"/>
</mappers>
</configuration>
然后开始写我们的实体类包pojo
Address.java文件内容如下：
package pojo;
import java.util.Date;
public class Address {
private Integer id;//主键
private String postCode;//邮编
private String contact;//联系人
private String addressDesc;//地址
private String tel;//联系电话
private Integer createBy;//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 userId;//用户ID
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getPostCode() {
return postCode;
}
public void setPostCode(String postCode) {
this.postCode = postCode;
}
public String getContact() {
return contact;
}
public void setContact(String contact) {
this.contact = contact;
}
public String getAddressDesc() {
return addressDesc;
}
public void setAddressDesc(String addressDesc) {
this.addressDesc = addressDesc;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public Integer getCreateBy() {
return createBy;
}
public void setCreateBy(Integer createBy) {
this.createBy = createBy;
}
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;
}
public Integer getUserId() {
return userId;
}
public void setUserId(Integer userId) {
this.userId = userId;
}
}
看到我旁边的这些老同志了吗请点开它查看代码
Role.java文件内容如下：
package pojo;
import java.util.Date;
public class Role {
private Integer id; //id
private String roleCode; //角色编码
private String roleName; //角色名称
private Integer created_By; //创建者
private Date creationDate; //创建时间
private Integer modifyBy; //更新者
private Date modifyDate;//更新时间
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 getCreated_By() {
return created_By;
}
public void setCreated_By(Integer created_By) {
this.created_By = created_By;
}
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;
}
}
看到我旁边的这位老同志了吗请点开它查看代码
User.java文件内容如下：
package pojo; import java.util.Date;
import java.util.List; 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 123
private Integer createdBy;//创建者
private Date creationDate;//创建时间
private Integer modifyBy;//更新者
private Date modifyDate;//时间
private String userRoleName; private Role role;//用户角色 association 1 对1 public Role getRole() {
return role;
}
public void setRole(Role role) {
this.role = role;
} private List<Address> addresses;//collection 1 对 多 public List<Address> getAddresses() {
return addresses;
}
public void setAddresses(List<Address> addresses) {
this.addresses = addresses;
} public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserRoleName() {
return userRoleName;
}
public void setUserRoleName(String userRoleName) {
this.userRoleName = userRoleName;
}
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 getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public Integer getUserRole() {
return userRole;
}
public void setUserRole(Integer userRole) {
this.userRole = userRole;
}
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;
} }
看到我旁边的这位老同志了吗请点开它查看代码
然后配置我们的工具包util代码如下
package util; import java.io.IOException;
import java.io.InputStream; import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder; public class MybatisUtil {
//程序加载阶段: 访问静态属性的时候就会加载到内存中
//静态属性初始化在类加载阶段,且只能初始化一次
private static SqlSessionFactory factory;
static {
try {
InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
factory = new SqlSessionFactoryBuilder().build(is);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} //创建sqlsession
public static SqlSession createSqlSession() {
return factory.openSession(false);//true默认值,自动提交事务, false手动提交
}
//关闭sqlsession
public static void closeSqlSession(SqlSession session) {
if (session!=null) {
session.close();
}
}
}
然后开始书写我们的Dao包中的java文件
UserMapper.java文件内容如下：
package dao; import java.util.Date;
import java.util.List;
import java.util.Map; import org.apache.ibatis.annotations.Param; import pojo.User; public interface UserMapper {
//查询所有
// public List<UserZi> getUserAll(); //查询所有数据条数
public int count();
public int delete(@Param("id")int id);
//添加
public int add(User user);
//单条件 根据用户名查询用户
public List<User> getUserListByUserName(String username);
//多条件查询
public List<User> getUserList(User user);
public List<User> getUserListByMap(Map<String, Object> map);
//根据id修改密码
public int update(@Param("userPassword")String password,@Param("id")Integer id);
//根据用户列表，角色显示查询的角色名称
public List<User> getUserLists(User user);
//根据角色id获取用户列表
public List<User> getUserListByRoleId(Integer roleId);
//根据用户id查询用户列表以及它所对应的地址列表
public List<User> getAddressUserListByUserId(Integer id);
//更新用户
public int modify(User user);
//根据条件(用户名称 用户角色 用户编码 创建时间 )查询用户表
public List<User> getUserList_choose(@Param("userName")String username,@Param("userCode")String usercode,@Param("userRole") Integer userrole,@Param("creationDate")Date creationDate);
//分页
public List<User> getUserListPage(@Param("userName")String userName,@Param("userRole") Integer userrole,@Param("index")Integer index,@Param("pageSize")Integer pageSize);
}
然后写入Dao包中的xml配置文件
UserMapper.xml文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="dao.UserMapper">
<!-- 查询所有条数 -->
<select id="count" resultType="int">
select count(*) from user
</select>
<!--单条件 根据用户名查询用户 -->
<select id="getUserListByUserName" resultType="user" parameterType="string">
select * from smbms_user where userName like CONCAT('%',#{userName},'%')
</select>
<!--删除 -->
<delete id="delete" parameterType="int">
delete from user where id = #{id}
</delete>
<!-- 多条件查询
<select id="getUserList" resultType="user" parameterType="user">
select * from smbms_user where userName like CONCAT('%',#{userName},'%') and userRole = #{userRole}
</select>
<select id="getUserListByMap" resultType="user" parameterType="map">
select * from smbms_user where userName like CONCAT('%',#{uName},'%') and userRole = #{uRole}
</select>-->
<!-- if+where 如果where中有返回,where标签会生成where,它会忽略第一个and/or -->
<select id="getUserList" resultType="user" parameterType="user">
select * from smbms_user
<trim prefix="where" prefixOverrides="and|or">
<if test="userName!=null and userName!=''">
and userName like CONCAT('%',#{userName},'%')
</if>
<if test="userRole!=null">
and userRole = #{userRole}
</if>
</trim>
</select>
<!-- where-if -->
<!--<select id="getUserList" resultType="user" parameterType="user">
select * from smbms_user
<where>
<if test="userName!=null and userName!=''">
and userName like CONCAT('%',#{userName},'%')
</if>
<if test="userRole!=null">
and userRole = #{userRole}
</if>
</where>
</select>-->
<!-- 更新用户 -->
<!-- if+trim会忽略最后一个逗号 -->
<update id="modify" parameterType="user">
update smbms_user
<trim prefix="set" suffixOverrides="," suffix="where id=#{id}">
<if test="userName!=null">userName=#{userName},</if>
<if test="userCode!=null">userCode=#{userCode},</if>
<if test="userPassword!=null">userPassword=#{userPassword},</if>
</trim>
<!--<update id="modify" parameterType="user">
update smbms_user
<set>
<if test="userName!=null">userName=#{userName},</if>
<if test="userCode!=null">userCode=#{userCode},</if>
<if test="userPassword!=null">userPassword=#{userPassword},</if>
</set>
where id=#{id}-->
</update>
<!-- 根据条件(用户名称 用户角色 用户编码 创建时间 )查询用户表 -->
<select id="getUserList_choose" resultType="user">
select * from smbms_user where 1=1
<choose>
<when test="userName!=null and userName!=''">
and userName like CONCAT('%',#{userName},'%')
</when>
<when test="userCode!=null and userCode!=''">
and userCode like CONCAT('%',#{userCode},'%')
</when>
<when test="userRole!=null">
and userRole=#{userRole}
</when>
<otherwise>
and YEAR(creationDate) = YEAR(#{creationDate})
</otherwise>
</choose>
</select>
<!-- 分页 -->
<select id="getUserListPage" resultType="user">
select * from smbms_user where 1=1
<if test="userName!=null and userName!=''">
and userName like CONCAT('%',#{userName},'%')
</if>
<if test="userRole!=null">
and userRole=#{userRole}
</if>
order by creationDate desc limit #{index},#{pageSize}
</select> <!-- 添加 -->
<insert id="add" parameterType="user">
insert into smbms_user(userName,userCode,userPassword)values(#{userName},#{userCode},#{userPassword})
</insert>
<!-- 根据id修改 -->
<update id="update" >
update smbms_user set userPassword = #{userPassword} where id=#{id}
</update>
<!-- 根据用户列表,角色显示查询的角色名称 -->
<select id="getUserLists" resultMap="userList" parameterType="user">
select u.*,r.roleName from smbms_user u ,smbms_role r where u.userName like CONCAT('%',#{userName},'%') and u.userRole = #{userRole} and
u.userRole = r.id;
</select>
<resultMap type="User" id="userList">
<id property="id" column="id"/>
<result property="userName" column="userName"/>
<result property="userCode" column="userCode"/>
<result property="userRoleName" column="roleName"/>
</resultMap>
<!-- 根据角色id获取用户列表 -->
<select id="getUserListByRoleId" resultMap="userRoleResult" parameterType="int">
select u.*,r.id as rid,r.roleName,r.roleCode from smbms_user u,smbms_role r where u.userRole = r.id and u.userRole = #{userRole}
</select>
<resultMap type="User" id="userRoleResult">
<id property="id" column="id"/>
<result property="userName" column="userName"/>
<association property="role" javaType="Role" resultMap="roleResult"/>
</resultMap>
<resultMap type="Role" id="roleResult">
<id property="id" column="rid"/>
<result property="roleName" column="roleName"/>
</resultMap>
<!-- 根据用户id查询用户列表以及它所对应的地址列表 -->
<select id="getAddressUserListByUserId" resultMap="userAddressResult" parameterType="integer">
select u.*,a.id as aid,a.contact,a.addressDesc from smbms_user u,smbms_address a where a.userId = u.id and u.id= #{id}
</select>
<resultMap type="User" id="userAddressResult">
<id property="id" column="id"/>
<result property="userName" column="userName"/>
<collection property="addresses" ofType="Address" resultMap="addressResult"></collection>
</resultMap>
<resultMap type="Address" id="addressResult">
<id property="id" column="aid"/>
<result property="contact" column="contact"/>
<result property="addressDesc" column="addressDesc"/>
</resultMap>
</mapper>
最后写入我们的测试包test
testa.java文件内容如下
package test; import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import org.apache.ibatis.annotations.Param;
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 org.apache.log4j.Logger;
import org.junit.Test; import dao.UserMapper;
import pojo.Address;
import pojo.User;
import util.MybatisUtil; public class testa {
private static Logger logger = Logger.getLogger(testa.class);
//查询2015年以后设备列表
@Test
public void m0() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
List<UserMapper> list =sqlSession.selectList("dao.Userzi.getUserAll");
System.out.println(list);
list.forEach(System.out::print);
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
} @Test
public void m1() {
SqlSession sqlSession =null;
try {
//1.读取配置文件
InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
//2.创建sqlsesessionFactory
//作用: 就是创建sqlsession
//作用域:application
//单例: 不管如何创建工厂对象,只能创建一个
//懒汉模式:当使用这个对象的时候才会去创建
//饿汉模式:程序只要加载,就会创建
SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is); //3.创建sqlsession
sqlSession = sessionFactory.openSession();
//4.操作数据库 sqlSession=MybatisUtil.createSqlSession();
int i = sqlSession.selectOne("dao.UserMapper.count");
int i1 = sqlSession.selectOne("dao.UserMapper.count");
System.out.println(i);
System.out.println(i1); } catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally {
//sqlSession.close();
MybatisUtil.closeSqlSession(sqlSession);
} }
@Test
public void m2() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//2.基于mapper接口形式
int i =sqlSession.getMapper(UserMapper.class).count();
System.out.println(i);
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
@Test
public void m3() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//2.基于mapper接口形式
//List<User> list =sqlSession.getMapper(UserMapper.class).getUserList();
List<User> list =sqlSession.selectList("dao.UserMapper.getUserAll");
//System.out.println(list);
list.forEach(System.out::print);
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
@Test
public void m4() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//2.基于mapper接口形式
List<User> list =sqlSession.getMapper(UserMapper.class).getUserList();
int i=sqlSession.getMapper(UserMapper.class).delete(1);
//提交事务
//int i1 =10/0;
sqlSession.commit();
System.out.println(i);
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//一对一查询 单条件(结果出)
@Test
public void m5() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//2.基于mapper接口形式
List<User> list=sqlSession.getMapper(UserMapper.class).getUserListByUserName("张");
for (User user : list) {
System.out.println("用户名"+user.getUserName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//一对多查询 多条件(结果出)
@Test
public void m6() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
Map<String, Object> map=new HashMap<String,Object>();
map.put("uName", "张");
map.put("uRole", 3);
List<User> list=sqlSession.getMapper(UserMapper.class).getUserListByMap(map);
//List<User> list = sqlSession.getMapper(UserMapper.class).getUserList(user);
for (User user2 : list) {
System.out.println(user2.getUserName());
logger.debug(user2.getUserName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//修改(结果出)
@Test
public void m7() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
int i= sqlSession.getMapper(UserMapper.class).update("5555", 16);
logger.debug(i+"****");
sqlSession.commit();
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//添加(结果出)
@Test
public void m8() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
User user = new User();
user.setUserCode("111");
user.setUserName("zhangsan");
user.setUserPassword("000");
int i = sqlSession.getMapper(UserMapper.class).add(user);
logger.debug(i+"***");
sqlSession.commit();
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//根据用户列表，角色显示查询的角色名称(结果出)
@Test
public void m9() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
User user = new User();
user.setUserName("张");
user.setUserRole(3);
List<User> list=sqlSession.getMapper(UserMapper.class).getUserLists(user);
for (User user2 : list) {
System.out.println("用户名:" + user2.getUserName()+",用户密码:"
+user2.getUserPassword()+",角色名字:"+user2.getUserRoleName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//根据角色id获取用户列表(结果出)
@Test
public void m10() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
List<User> list= sqlSession.getMapper(UserMapper.class).getUserListByRoleId(3);
for (User user : list) {
System.out.println(user.getUserName()+":"+user.getRole().getRoleName()+":"+user.getRole().getRoleCode());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//根据用户id查询用户列表以及它所对应的地址列表(结果出)
@Test
public void m11() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
List<User> list= sqlSession.getMapper(UserMapper.class).getAddressUserListByUserId(1);
for (User user : list) {
List<Address> list2 = user.getAddresses();
for (Address address : list2) {
System.out.println("用户名"+user.getUserName()+",地址"+address.getAddressDesc());
}
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//多条件查询 一对多 动态SQL(结果出)
@Test
public void m12() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//创建user对象
User user = new User();
user.setUserName("王");
user.setUserRole(3);
List<User> list = sqlSession.getMapper(UserMapper.class).getUserList(user);
for (User user2 : list) {
System.out.println(user2.getUserName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//更新用户(结果出)
@Test
public void m13() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
//创建user对象
User user = new User();
user.setUserName("1234");
user.setUserCode("1234");
user.setUserPassword("1234");
user.setId(18);
int i =sqlSession.getMapper(UserMapper.class).modify(user);
System.out.println(i);
sqlSession.commit();//提交事务
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//根据条件(用户名称 用户角色 用户编码 创建时间 )查询用户表(结果出)
@Test
public void m14() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
List<User> list=sqlSession.getMapper(UserMapper.class).getUserList_choose(null, null, null, new SimpleDateFormat("yyyy-MM-dd").parse("2016-01-01"));
for (User user : list) {
System.out.println(user.getUserName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
//分页(结果出)
@Test
public void m15() {
SqlSession sqlSession=null;
try {
sqlSession = MybatisUtil.createSqlSession();
List<User> list= sqlSession.getMapper(UserMapper.class).getUserListPage("", 3, 0, 2);
for (User user : list) {
System.out.println(user.getUserName());
}
} catch (Exception e) {
// TODO: handle exception
}finally {
MybatisUtil.closeSqlSession(sqlSession);
}
}
}