Project Introduction

Name: UMS

UMS: User Manager System, user management system

overall demand

1) Query all [Phase 1]
2) Add [Phase 1]
3) Delete [Phase 1]
4) Query details [Phase 1]
5) Conditional query [Phase 1]
6) Modify [Phase 2]

build environment

Step 1: Create web project
Step 2: Import jar package
Step 3: Create package package and JavaBean

public class User { 
 private String id; //唯一标识 
 private String loginName; //登录名 
 private String loginPwd; //登录密码 
 private String userName; //用户名（昵称） 
 private String sex; //性别 
 private String education; //学历 
 private String birthday; //生日 
 private String telephone; //电话 
 private String[] interest; //兴趣爱好 
 private String remark; //备注 
 private String utype; //权限： 管理员/普通用户 
}

query all

Statement of needs

demand analysis

Code

/login/left.jsp

UserServlet

UserService

UserDao

/user/list.jsp

Add user

Statement of needs

demand analysis

Code

/user/add.jsp

UserServlet

UserService

UserDao

Query and formulate user information

Statement of needs

demand analysis

Code

/user/list.jsp

UserServlet

UserService

think

How to save and display query conditions on JSP pages

Delete specified user information

Statement of needs

demand analysis

Code

/user/list.jsp

UserServlet

UserService

UserDao

think

Pop up a confirmation box before deleting

Inquiry Details

Statement of needs

demand analysis

Code

/user/list.jsp

UserServlet

UserService

/user/view.jsp

edit user

Statement of needs

To meet such complex requirements, we need to split it into two steps:
1. User data query display: click to edit, query a certain user data, and display it on the JSP page
2. User data modification: edit the page, click "OK" , write the data to the hard disk file, and return to the list display