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校园电商项目2(基于SSM)——模块设计

时间:2019-04-07 16:55:27      阅读:138      评论:0      收藏:0      [点我收藏+]

标签:char   var   更改   外键   primary   arc   支持   而在   设计   

步骤一:各模块职责

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步骤二:实体类设计

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package com.figsprite.o2o.bean;

import java.util.Date;

public class Area {
	
	private Integer areaId;
	private String areaName;
	private Integer priority;
	
	private Date createTime;
	private Date lastEditTime;
	
	public Integer getAreaId() {
		return areaId;
	}
	public void setAreaId(Integer areaId) {
		this.areaId = areaId;
	}
	public String getAreaName() {
		return areaName;
	}
	public void setAreaName(String areaName) {
		this.areaName = areaName;
	}
	public Integer getPriority() {
		return priority;
	}
	public void setPriority(Integer priority) {
		this.priority = priority;
	}
	public Date getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public Date getLastEditTime() {
		return lastEditTime;
	}
	public void setLastEditTime(Date lastEditTime) {
		this.lastEditTime = lastEditTime;
	}
	
	
}

  接下来创建数据库

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  接着按照上面的javabean,添加列

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package com.figsprite.o2o.bean;

import java.util.Date;

public class PersonInfo {
	private Long userId;
	private String name;
	private String profileImg;
	
	private String email;
	private String gender;
	private Integer enableStatus;
	
	//1.顾客 2.店家 3.超级管理员
	private Integer userType;
	private Date createTime;
	private Date lastEditTime;
	
	
	public Long getUserId() {
		return userId;
	}
	public void setUserId(Long userId) {
		this.userId = userId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getProfileImg() {
		return profileImg;
	}
	public void setProfileImg(String profileImg) {
		this.profileImg = profileImg;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public String getGender() {
		return gender;
	}
	public void setGender(String gender) {
		this.gender = gender;
	}
	public Integer getEnableStatus() {
		return enableStatus;
	}
	public void setEnableStatus(Integer enableStatus) {
		this.enableStatus = enableStatus;
	}
	public Integer getUserType() {
		return userType;
	}
	public void setUserType(Integer userType) {
		this.userType = userType;
	}
	public Date getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public Date getLastEditTime() {
		return lastEditTime;
	}
	public void setLastEditTime(Date lastEditTime) {
		this.lastEditTime = lastEditTime;
	}
	
	
}

  

USE school_o2o;
CREATE TABLE `tb_person_info`(
	`user_id` INT(10) NOT NULL AUTO_INCREMENT,
	`name` VARCHAR(32) DEFAULT NULL,
	`profile_img` VARCHAR(1024) DEFAULT NULL,
	`email` VARCHAR(1024) DEFAULT NULL,
	`gender` VARCHAR(2) DEFAULT NULL,
	`enable_status` INT(2) NOT NULL DEFAULT 0,
	`user_type` INT(2) NOT NULL DEFAULT 1 ,
	`create_time` DATETIME DEFAULT NULL,
	`last_edit_time` DATETIME DEFAULT NULL,
	PRIMARY KEY(`user_id`)
)ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET = utf8

  在这里,简单介绍一下MYSQL的两个常用引擎的区别:

    ( • ?ω•? )?

    MyISAM只支持表级锁,什么是表级锁呢?比如如果一个线程要更改第二行记录,那么另外一个线程想更改第三行记录,但是因为MyISAM是表级锁,所以后面那个线程只好在哪里静静等待,不过MyISAM的读能力很强,因为它是基于权标扫描,然而InnoDB是行级锁,也就是小A同学在改第一行的时候,小B同学可以同时改第三行(反正不要再改第一行都OK),

    总之,InnoDB在写的方面略强于MyISAM,然而在读方面MyISAM远强于InnoDB, 但InnoDB支持事务控制,因此如果读的操作比较多建议使用MyISAM

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package com.figsprite.o2o.bean;

import java.util.Date;

public class WechatAuth {
	private Long wechatAuthId;
	private String openId;
	private Date createTime;
	
	private PersonInfo personInfo;

	public Long getWechatAuthId() {
		return wechatAuthId;
	}

	public void setWechatAuthId(Long wechatAuthId) {
		this.wechatAuthId = wechatAuthId;
	}

	public String getOpenId() {
		return openId;
	}

	public void setOpenId(String openId) {
		this.openId = openId;
	}

	public Date getCreateTime() {
		return createTime;
	}

	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}

	public PersonInfo getPersonInfo() {
		return personInfo;
	}

	public void setPersonInfo(PersonInfo personInfo) {
		this.personInfo = personInfo;
	}
	
}

  这里用户ID相对于该表是个外键,所以在JavaBean里我们通过一个对象引用的方式表示外键

  

package com.figsprite.o2o.bean;

import java.util.Date;

public class LocalAuth {
	private Long localAuthId;
	private String username;
	private String password;
	
	private Date createTime;
	private Date lastEditTime;
	private PersonInfo personInfo;
	
	public Long getLocalAuthId() {
		return localAuthId;
	}
	public void setLocalAuthId(Long localAuthId) {
		this.localAuthId = localAuthId;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public Date getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public Date getLastEditTime() {
		return lastEditTime;
	}
	public void setLastEditTime(Date lastEditTime) {
		this.lastEditTime = lastEditTime;
	}
	public PersonInfo getPersonInfo() {
		return personInfo;
	}
	public void setPersonInfo(PersonInfo personInfo) {
		this.personInfo = personInfo;
	}
	
	
}

  

 

校园电商项目2(基于SSM)——模块设计

标签:char   var   更改   外键   primary   arc   支持   而在   设计   

原文地址:https://www.cnblogs.com/figsprite/p/10665913.html

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