一、超市订单管理系统准备阶段
- Supermarket order management system
创建数据库
数据库代码放置如下
点击查看数据库address代码
CREATE TABLE `smbms_address` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
`contact` varchar(15) DEFAULT NULL COMMENT '联系人姓名',
`addressDesc` varchar(50) DEFAULT NULL COMMENT '收货地址',
`postCode` varchar(15) DEFAULT NULL COMMENT '邮编',
`tel` int(20) DEFAULT NULL COMMENT '联系人电话',
`createdBy` varchar(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 DEFAULT CHARSET=utf8;
INSERT INTO `smbms_address` 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);
INSERT INTO `smbms_address` VALUES (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);
INSERT INTO `smbms_address` VALUES (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);
INSERT INTO `smbms_address` VALUES (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);
INSERT INTO `smbms_address` VALUES (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);
INSERT INTO `smbms_address` VALUES (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);
点击查看数据库bill代码
CREATE TABLE `smbms_bill` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
`billCode` varchar(30) DEFAULT NULL COMMENT '账单编码',
`productName` varchar(20) DEFAULT NULL COMMENT '商品名称',
`productDesc` varchar(50) DEFAULT NULL COMMENT '商品描述',
`productUnit` varchar(60) 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 '总金额',
`isPayment` int(10) DEFAULT NULL COMMENT '是否支付',
`createdBy` bigint(20) DEFAULT NULL COMMENT '创建者',
`creationDate` datetime DEFAULT NULL COMMENT '创建时间',
`modifyBy` bigint(20) DEFAULT NULL COMMENT '更新者',
`modifyDate` datetime DEFAULT NULL COMMENT '更新时间',
`providerId` int(10) DEFAULT NULL COMMENT '提供者id',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `smbms_bill` 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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (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);
INSERT INTO `smbms_bill` VALUES (17, 'BILL2016_017', '脉动', '饮料', '瓶', 1500.00, 4500.00, 2, 1, '2016-05-10 12:00:00', NULL, NULL, 2);
INSERT INTO `smbms_bill` VALUES (18, 'BILL2016_018', '哇哈哈', '饮料', '瓶', 2000.00, 4000.00, 2, 1, '2015-11-24 15:12:03', NULL, NULL, 2);
点击查看数据库provider代码
CREATE TABLE `smbms_provider` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
`proCode` varchar(15) DEFAULT NULL COMMENT '供应商编码',
`proName` varchar(15) DEFAULT NULL COMMENT '供应商名称',
`proDesc` varchar(50) DEFAULT NULL COMMENT '供应商描述',
`proContact` varchar(15) DEFAULT NULL COMMENT '供应商联系人',
`proPhone` varchar(20) DEFAULT NULL COMMENT '供应商电话',
`userAddress` varchar(30) DEFAULT NULL COMMENT '供应商地址',
`userFax` varchar(20) DEFAULT NULL COMMENT '供应商传真',
`createdBy` bigint(20) DEFAULT NULL COMMENT '创建者',
`creationDate` datetime DEFAULT NULL COMMENT '创建时间',
`modifyBy` bigint(20) DEFAULT NULL COMMENT '更新者',
`modifyDate` datetime DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `smbms_provider` 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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
INSERT INTO `smbms_provider` VALUES (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);
点击查看数据库role代码
CREATE TABLE `smbms_role` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
`roleCode` varchar(30) DEFAULT NULL COMMENT '角色编码',
`roleName` varchar(15) 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 '更新者',
`modifyDate` datetime DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `smbms_role` VALUES (1, 'SMBMS_ADMIN', '系统管理员', 1, '2016-04-13 00:00:00', NULL, NULL);
INSERT INTO `smbms_role` VALUES (2, 'SMBMS_MANAGER', '经理', 1, '2016-04-13 00:00:00', NULL, NULL);
INSERT INTO `smbms_role` VALUES (3, 'SMBMS_EMPLOYEE', '普通员工', 1, '2016-04-13 00:00:00', NULL, NULL);
点击查看数据库user代码
CREATE TABLE `smbms_user` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
`userCode` varchar(15) DEFAULT NULL COMMENT '用户编码',
`userName` varchar(15) DEFAULT NULL COMMENT '用户名字',
`userPassword` varchar(20) DEFAULT NULL COMMENT '用户密码',
`gender` int(10) DEFAULT NULL COMMENT '性别',
`birthday` date DEFAULT NULL COMMENT '出生日期',
`phone` varchar(20) DEFAULT NULL COMMENT '电话',
`address` varchar(30) DEFAULT NULL COMMENT '地址',
`userRole` bigint(20) DEFAULT NULL COMMENT '用户角色',
`createdBy` bigint(20) DEFAULT NULL COMMENT '创建者',
`creationDate` datetime DEFAULT NULL COMMENT '创建时间',
`modifyBy` bigint(20) DEFAULT NULL COMMENT '更新者',
`modifyDate` datetime DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
INSERT INTO `smbms_user` VALUES (1, 'admin', '111', '111111', 1, '2021-04-22', '13688889999', '北京市海淀区成府路207号', 3, 1, '2013-03-21 16:52:07', 1, '2021-04-22 17:43:02');
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (8, 'zhaoyan', '赵燕', '0000000', 2, '2021-04-22', '18098764545', '北京市海淀区回龙观小区10号楼', 2, 1, '2016-04-21 13:54:07', 1, '2021-04-22 17:56:11');
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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');
INSERT INTO `smbms_user` VALUES (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);
INSERT INTO `smbms_user` VALUES (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);
- 当数据库配置完以后我们开始idea，创建一个Maven Webapp模板项目
- 然后开始配置Tomcat服务器
- 在pom.xml中导入项目依赖的jar包
点击查看代码
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency><!-- servlet包 -->
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency><!-- jstl包 -->
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
</dependency>
<dependency><!-- jsp包 -->
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
</dependency>
<dependency><!-- 数据库包 -->
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
</dependencies>
二、进入idea开始编码
- 首先编写我们的实体类pojo，数据库表中的信息与之对应。
点击User类代码
package pojo;
import java.util.Date;
public class User {
private Integer id; //id
private String userCode; //用户编码
private String userName; //用户名字
private String userPassword; //用户密码
private Integer gender; //性别
private Date birthday; //出生日期
private String phone; //手机号
private String address; //地址
private Integer userRole; //用户角色
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 age; //年龄
private String userRoleName; //用户角色名字
public Integer getAge() {
Date date = new Date();
Integer age = date.getYear() - birthday.getYear();
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getUserRoleName() {
return userRoleName;
}
public void setUserRoleName(String userRoleName) {
this.userRoleName = userRoleName;
}
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 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 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;
}
}
点击Role类代码
package pojo;
import java.util.Date;
public class Role {
private Integer id; //id
private String roleCode; //角色编码
private String roleName; //角色名字
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
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;
}
}
点击Provider代码
package pojo;
import java.util.Date;
public class Provider {
private Integer id; //id
private String proCode; //供应商编码
private String proName; //供应商名字
private String proDesc; //供应商查询
private String proContact; //供应商联系人
private String proPhone; //供应商手机
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 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 getProCode() {
return proCode;
}
public void setProCode(String proCode) {
this.proCode = proCode;
}
public String getProName() {
return proName;
}
public void setProName(String proName) {
this.proName = proName;
}
public String getProDesc() {
return proDesc;
}
public void setProDesc(String proDesc) {
this.proDesc = proDesc;
}
public String getProContact() {
return proContact;
}
public void setProContact(String proContact) {
this.proContact = proContact;
}
public String getProPhone() {
return proPhone;
}
public void setProPhone(String proPhone) {
this.proPhone = proPhone;
}
public String getProAddress() {
return proAddress;
}
public void setProAddress(String proAddress) {
this.proAddress = proAddress;
}
public String getProFax() {
return proFax;
}
public void setProFax(String proFax) {
this.proFax = proFax;
}
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;
}
}
点击Bill代码
package pojo;
import java.math.BigDecimal;
import java.util.Date;
public class Bill {
private int 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 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 providerId; //供应商id
private String providerName;//供应商名字
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getBillCode() {
return billCode;
}
public void setBillCode(String billCode) {
this.billCode = billCode;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductDesc() {
return productDesc;
}
public void setProductDesc(String productDesc) {
this.productDesc = productDesc;
}
public String getProductUnit() {
return productUnit;
}
public void setProductUnit(String productUnit) {
this.productUnit = productUnit;
}
public BigDecimal getProductCount() {
return productCount;
}
public void setProductCount(BigDecimal productCount) {
this.productCount = productCount;
}
public BigDecimal getTotalPrice() {
return totalPrice;
}
public void setTotalPrice(BigDecimal totalPrice) {
this.totalPrice = totalPrice;
}
public Integer getIsPayment() {
return isPayment;
}
public void setIsPayment(Integer isPayment) {
this.isPayment = isPayment;
}
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;
}
public Integer getProviderId() {
return providerId;
}
public void setProviderId(Integer providerId) {
this.providerId = providerId;
}
public String getProviderName() {
return providerName;
}
public void setProviderName(String providerName) {
this.providerName = providerName;
}
}
- 然后编写数据库连接用的文件
点击文件后缀为.properties
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/数据库名字?useUnicode=true&characterEncoding=utf8
username=账号
password=密码
idea连接数据库（不在此展示，自行解决）
编写过滤器，使我们网页每次都用utf-8编码
点击过滤器代码
import javax.servlet.*;
import java.io.IOException;
public class Filter implements javax.servlet.Filter {
public void init(FilterConfig filterConfig) throws ServletException {
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
chain.doFilter(request,response);
}
public void destroy() {
}
}
- 编写数据库的公共类，实现增删改查SRUD功能
package com.meteor.dao;
import java.io.IOException;
import java.io.InputStream;
import java.sql.*;
import java.util.Properties;
// *** 作数据库的公共类
public class BaseDao {
private static final String driver;
private static final String url;
private static final String username;
private static final String password;
//静态代码块，随着类的加载而加载
static{
Properties properties = new Properties();//可以让文件内容以键值对的形式读取
//将文件内容读出
InputStream is = BaseDao.class.getClassLoader().getResourceAsStream("db.properties");
try {
//properties.load()从输入字节流读取属性列表（键和元素对）。
properties.load(is);
} catch (IOException e) {
e.printStackTrace();
}
driver = properties.getProperty("driver");
url = properties.getProperty("url");
username = properties.getProperty("username");
password = properties.getProperty("password");
}
//获取数据库的连接
public static Connection getConnection() {
Connection connection = null;
try {
Class.forName(driver);//加载驱动
//尝试建立与给定数据库URL的连接。
connection = DriverManager.getConnection(url, username, password);
} catch (Exception e) {
e.printStackTrace();
}
return connection;
}
//编写查询公共方法
public static ResultSet execute(Connection connection,String sql,Object[] params,ResultSet resultSet,PreparedStatement preparedStatement) throws SQLException {
//connection.prepareStatement(sql)创建一个 PreparedStatement对象，用于将参数化的SQL语句发送到数据库。
preparedStatement = connection.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
preparedStatement.setObject(i+1,params[i]);//使用给定对象设置指定参数的值。
}
resultSet = preparedStatement.executeQuery();//返回查询结果
return resultSet;
}
//编写增删改公共方法
public static int execute(Connection connection,String sql,Object[] params,PreparedStatement preparedStatement) throws SQLException {
//connection.prepareStatement(sql)创建一个 PreparedStatement对象，用于将参数化的SQL语句发送到数据库。
preparedStatement = connection.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
preparedStatement.setObject(i+1,params[i]);
}
int updateRows = preparedStatement.executeUpdate();
return updateRows;
}
//释放资源
public static boolean closeResource(Connection connection,PreparedStatement preparedStatement,ResultSet resultSet) {
boolean flag = true;
if(resultSet != null) {
try {
resultSet.close();
//GC回收机制，如果对象为null，就会被回收。
resultSet = null;
} catch (SQLException e) {
e.printStackTrace();
flag = false;
}
}
if(preparedStatement != null) {
try {
preparedStatement.close();
//GC回收机制，如果对象为null，就会被回收。
preparedStatement = null;
} catch (SQLException e) {
e.printStackTrace();
flag = false;
}
}
if(connection != null) {
try {
connection.close();
//GC回收机制，如果对象为null，就会被回收。
connection = null;
} catch (SQLException e) {
e.printStackTrace();
flag = false;
}
}
return flag;
}
}
- 编写service服务层代码，验证登录是否正确
import dao.BaseDao;
import dao.user.UserDao;
import dao.user.UserDaoImpl;
import pojo.User;
import java.sql.Connection;
public class UserServiceImpl implements UserService{
public User login(String userCode, String password) {
UserDaoImpl userDao = new UserDaoImpl();
Connection connection = BaseDao.getConnection();//连接数据库
User user = userDao.getLoginUser(connection, userCode);//获得登录用户信息
//对登录的用户账号密码进行判断
if(user.getUserPassword() == null ? password == null : user.getUserPassword().equals(password)) {
BaseDao.closeResource(connection,null,null);
return user;
}else {
BaseDao.closeResource(connection,null,null);
System.out.println("密码错误");
return null;
}
}
}
7.编写servlet业务层代码，和前端交互
package com.meteor.servlet.user;
import com.meteor.pojo.User;
import com.meteor.service.user.UserService;
import com.meteor.service.user.UserServiceImpl;
import com.meteor.util.Constants;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class LoginServlet extends HttpServlet {
//控制层调用业务层代码
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("别出bug");
//获取前端输入的用户名和密码
String userCode = req.getParameter("userCode");
String userPassword = req.getParameter("userPassword");
//和数据库的用户密码对比，调用业务层
UserServiceImpl userService = new UserServiceImpl();
User user = userService.login(userCode, userPassword);
if(user != null) { //查有此人
//将用户信息放到session中
req.getSession().setAttribute(Constants.USER_SESSION,user);
//登录成功，跳转到内部主页
resp.sendRedirect("jsp/frame.jsp");
}else {
//查无此人，转回登录页面
req.setAttribute("error","用户密码不正确");
req.getRequestDispatcher("login.jsp").forward(req,resp);
}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
- 工具类用来存放session值
点击查看代码
public class Constants {
public static final String USER_SESSION = "userSession";
}
- 在web.xml设置servlet和filter过滤器
<!-- 字符编码过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>com.meteor.filter.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 设置欢迎页面 -->
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>com.meteor.servlet.user.LoginServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/login.do</url-pattern>
</servlet-mapping>
三、总结
- 前端代码页面都是cpoy的，若想获取前端代码可私信我。
- 对于smdms登录内容就总结这么多，也是跟着狂神学的，代码也没怎么改进，只是想自己复习理解一遍。
如果有不足之处，希望大家多多包涵，多多支持。
如果有不懂的地方可以直接私信问我，欢迎来访！
- 我将会继续更新关于Java的学习知识，以及此项目的后续功能，感兴趣的小伙伴可以关注一下。
- 文章写得比较走心，用了很长时间，绝对不是copy过来的！
- 尊重每一位学习知识的人，同时也尊重每一位分享知识的人。
欢迎分享，转载请注明来源：内存溢出
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