16、smbms项目搭建
数据库
DROP TABLE IF EXISTS `smbms_address`; CREATE TABLE `smbms_address` ( `id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID', `contact` VARCHAR(15) NULL DEFAULT NULL COMMENT 联系人姓名， `addressDesc` VARCHAR(50) NULL DEFAULT NULL COMMENT 收货地址明细， `postCode` VARCHAR(15) NULL DEFAULT NULL COMMENT '邮编', `tel` VARCHAR(20) NULL DEFAULT NULL COMMENT 联系人电话， `createdBy` BIGINT(20) NULL DEFAULT NULL COMMENT 创造者， `creationDate` DATETIME NULL DEFAULT NULL COMMENT 创造时间， `modifyBy` BIGINT(20) NULL DEFAULT NULL COMMENT 修改者， `modifyDate` DATETIME NULL DEFAULT NULL COMMENT 修改时间， `userId` BIGINT(20) NULL DEFAULT NULL COMMENT '用户ID', PRIMARY KEY (`id`) USING BTREE ) ENGINE=INNODB DEFAULT CHARSET=utf8; INSERT INTO `smbms_address` VALUES (1, '王丽', 东交民巷44号，北京市东城区， '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', 朝阳门南街14号，北京市朝阳区， '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， 高丽营镇金马工业区18号，北京市顺义区， '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) NULL DEFAULT NULL COMMENT 帐单编码， `productName` VARCHAR(20) NULL DEFAULT NULL COMMENT 商品名称， `productDesc` VARCHAR(50) NULL DEFAULT NULL COMMENT 商品描述， `productUnit` VARCHAR(10) NULL DEFAULT NULL COMMENT 商品单位， `productCount` DECIMAL(20, 2) NULL DEFAULT NULL COMMENT 商品数量， `totalPrice` DECIMAL(20, 2) NULL DEFAULT NULL COMMENT '商品总额', `isPayment` INT(10) NULL DEFAULT NULL COMMENT 是否支付 二、已支付)， `createdBy` BIGINT(20) NULL DEFAULT NULL COMMENT '创建者（userId）', `creationDate` DATETIME NULL DEFAULT NULL COMMENT 创造时间， `modifyBy` BIGINT(20) NULL DEFAULT NULL COMMENT '更新者（userId）', `modifyDate` DATETIME NULL DEFAULT NULL COMMENT 更新时间， `providerId` BIGINT(20) NULL DEFAULT NULL COMMENT '供应商ID', PRIMARY KEY (`id`) USING BTREE ) ENGINE=INNODB DEFAULT CHARSET=utf8; INSERT INTO `smbms_bill` VALUES (2, 'BILL2016_002', 肥皂，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， 厨房用具，日用品， '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_bil` 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);
DROP TABLE IF EXISTS `smbms_provider`;
CREATE TABLE `smbms_provider` (
`id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`proCode` VARCHAR(20) NULL DEFAULT NULL COMMENT '供应商编码',
`proName` VARCHAR(20) NULL DEFAULT NULL COMMENT '供应商名称',
`proDesc` VARCHAR(50) NULL DEFAULT NULL COMMENT '供应商详细描述',
`proContact` VARCHAR(20) NULL DEFAULT NULL COMMENT '供应商联系人',
`proPhone` VARCHAR(20) NULL DEFAULT NULL COMMENT '联系电话',
`proAddress` VARCHAR(50) NULL DEFAULT NULL COMMENT '地址',
`proFax` VARCHAR(20) NULL DEFAULT NULL COMMENT '传真',
`createdBy` BIGINT(20) NULL DEFAULT NULL COMMENT '创建者（userId）',
`creationDate` DATETIME NULL DEFAULT NULL COMMENT '创建时间',
`modifyDate` DATETIME NULL DEFAULT NULL COMMENT '更新时间',
`modifyBy` BIGINT(20) NULL DEFAULT NULL COMMENT '更新者（userId）',
PRIMARY KEY (`id`) USING BTREE
) 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);
DROP TABLE IF EXISTS `smbms_role`;
CREATE TABLE `smbms_role` (
`id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`roleCode` VARCHAR(15) NULL DEFAULT NULL COMMENT '角色编码',
`roleName` VARCHAR(15) NULL DEFAULT NULL COMMENT '角色名称',
`createdBy` BIGINT(20) NULL DEFAULT NULL COMMENT '创建者',
`creationDate` DATETIME NULL DEFAULT NULL COMMENT '创建时间',
`modifyBy` BIGINT(20) NULL DEFAULT NULL COMMENT '修改者',
`modifyDate` DATETIME NULL DEFAULT NULL COMMENT '修改时间',
PRIMARY KEY (`id`) USING BTREE
) 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);
DROP TABLE IF EXISTS `smbms_user`;
CREATE TABLE `smbms_user` (
`id` BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
`userCode` VARCHAR(15) NULL DEFAULT NULL COMMENT '用户编码',
`userName` VARCHAR(15) NULL DEFAULT NULL COMMENT '用户名称',
`userPassword` VARCHAR(15) NULL DEFAULT NULL COMMENT '用户密码',
`gender` INT(10) NULL DEFAULT NULL COMMENT '性别（1:女、 2:男）',
`birthday` DATE NULL DEFAULT NULL COMMENT '出生日期',
`phone` VARCHAR(15) NULL DEFAULT NULL COMMENT '手机',
`address` VARCHAR(30) NULL DEFAULT NULL COMMENT '地址',
`userRole` BIGINT(20) NULL DEFAULT NULL COMMENT '用户角色（取自角色表-角色id）',
`createdBy` BIGINT(20) NULL DEFAULT NULL COMMENT '创建者（userId）',
`creationDate` DATETIME NULL DEFAULT NULL COMMENT '创建时间',
`modifyBy` BIGINT(20) NULL DEFAULT NULL COMMENT '更新者（userId）',
`modifyDate` DATETIME NULL DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`) USING BTREE
) 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);
INSERT INTO `smbms_user` VALUES (18, '111', '111', '111111', 1, '2021-04-22', '15072151323', '111', 3, 1, '2021-04-22 18:13:07', NULL, NULL);
架构设计图
项目如何搭建
考虑是否使用maven，依赖.jar
项目搭建准备工作
-
搭建一个maven web项目
-
配置tomcat（两个，本地电脑一个，IDEA一个）
-
测试项目是否能跑起来
-
导入项目中所需的jar包
-
创建项目包结构
-
编写实体类
ORM映射：表-类映射
- 编写基础公共类
1.数据库配置文件
2.编写数据库的公共类
3.编写字符编码的过滤器
- 导入静态资源
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.kuang</groupId>
<artifactId>smbms</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
import java.util.Date;
/**
* @ClassName: Address
* @Description: TODO 类描述
* @Author: zyy
* @Date: 2021/12/22 17:35
* @Version: 1.0
*/
public class Address {
private Integer id;
private String contact;
private String addressDesc;
private String postCode;
private String tel;
private Integer createdBy;
private Integer modifyBy;
private Date creationDate;
private Date modifyDate;
private Integer userId;
//...省略get set方法
}
import java.util.Date;
/**
* @ClassName: Bill
* @Description: TODO 类描述
* @Author: zyy
* @Date: 2021/12/22 17:35
* @Version: 1.0
*/
public class Bill {
private Integer id;
private String billCode;
private String productName;
private String productDesc;
private String productUnit;
private Double productCount;
private Double totalPrice;
private Integer isPayment;
private Integer createdBy;
private Integer modifyBy;
private Date creationDate;
private Date modifyDate;
private Integer providerId;
//...省略get set方法
}
import java.util.Date;
/**
* @ClassName: Provider
* @Description: TODO 类描述
* @Author: zyy
* @Date: 2021/12/22 17:35
* @Version: 1.0
*/
public class Provider {
private Integer id;
private String proCode;
private String proName;
private String proDesc;
private String proContact;
private String proPhone;
private String proAddress;
private String proFax;
private Integer createdBy;
private Integer modifyBy;
private Date creationDate;
private Date modifyDate;
//...省略get set方法
}
import java.util.Date;
/**
* @ClassName: Role
* @Description: TODO 类描述
* @Author: zyy
* @Date: 2021/12/22 17:35
* @Version: 1.0
*/
public class Role {
private Integer id;
private String roleCode;
private String roleName;
private Integer createdBy;
private Integer modifyBy;
private Date creationDate;
private Date modifyDate;
//...省略get set方法
}
import java.util.Calendar;
import java.util.Date;
/**
* @ClassName: User
* @Description: TODO 类描述
* @Author: zyy
* @Date: 2021/12/22 17:34
* @Version: 1.0
*/
public class User {
private Integer id;
private String userCode;
private String userName;
private String userPassword;
private Integer gender;
private Date birthday;
private String phone;
private String address;
private Integer userRole;
private Integer createdBy;
private Integer modifyBy;
private Date creationDate;
private Date modifyDate;
private Integer age;
private String userRoleName;
public Integer getAge() {
Date date = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
int nowYear = calendar.get(Calendar.YEAR);
calendar.setTime(birthday);
int birthYear = calendar.get(Calendar.YEAR);
return nowYear - birthYear;
}
//...省略其他get set方法
}
db.properties
注意这里需要指定数据库
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/smbms?userUnicode=true&characterEncoding=utf-8
username=root
password=123456编写数据库的公共类
package com.kuang.dao;
import java.io.IOException;
import java.io.InputStream;
import java.sql.*;
import java.util.Properties;
//操作数据库的公共类
public class BaseDao {
private static String driver;
private static String url;
private static String username;
private static String password;
//静态代码块，类加载的时候初始化
static {
Properties properties = new Properties();
//通过类加载器读取相应的资源
InputStream in = BaseDao.class.getClassLoader().getResourceAsStream("db.properties");
try {
properties.load(in);
String driver = properties.getProperty("driver");
String url = properties.getProperty("url");
String username = properties.getProperty("username");
String password = properties.getProperty("password");
} catch (IOException e) {
e.printStackTrace();
}
}
//获取数据库的连接
public static Connection getConnection(){
Connection con = null;
try {
Class.forName(driver);
con = DriverManager.getConnection(url, username, password);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return con;
}
//获取查询的结果
public static ResultSet execute(Connection con, PreparedStatement ps,ResultSet rs,String sql,Object[] params) throws SQLException {
ps = con.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
ps.setObject(i+1,params[i]);
}
rs = ps.executeQuery();
return rs;
}
//获取增删改的结果
public static int execute(Connection con,PreparedStatement ps,String sql,Object[] params) throws SQLException {
ps = con.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
ps.setObject(i + 1,params[i]);
}
return ps.executeUpdate();
}
//释放资源
public static boolean closeResource(Connection con,PreparedStatement ps,ResultSet rs){
boolean closeFlag = true;
if (rs != null){
try {
rs.close();
rs = null;//GC回收
} catch (SQLException e) {
e.printStackTrace();
closeFlag = false;
}
}
if (ps != null){
try {
ps.close();
ps = null;//GC回收
} catch (SQLException e) {
e.printStackTrace();
closeFlag = false;
}
}
if (con != null){
try {
con.close();
con = null;//GC回收
} catch (SQLException e) {
e.printStackTrace();
closeFlag = false;
}
}
return closeFlag;
}
}
编写字符编码的过滤器
package com.kuang.filter;
import javax.servlet.*;
import java.io.IOException;
public class CharacterEncodingFilter implements 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");
response.setContentType("text/html;charset=utf-8");
chain.doFilter(request,response);
}
public void destroy() {
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0"
metadata-complete="true">
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>com.kuang.filter.CharacterEncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>———————————————— 版权声明：本文为CSDN博主「程序猿tu」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/qq_41171409/article/details/123553501