# SSM-CRUD([尚硅谷视频](https://www.bilibili.com/video/av35988777))
### 一、开发工具
- #### InteliJ IDEA 2019
- #### Maven 3.6.1
### 二、.功能介绍
- #### 1. 增删改查
- #### 2. 分页查询
- #### 3. 数据校验
- ##### 前端校验(JS)
- ##### 后端校验(JSR303)
- #### 4. ajax
- #### 5. Rest风格URI:
- ##### 使用Http协议请求方式的动词,来表示对资源的操作
- ##### GET: /emps/get/{id} 查询
- ##### GET: /emps/get 查询
- ##### POST: /emps/save增加
- ##### PUT: /emps/update/{id} 修改
- ##### DELETE: /emps/del/{id} 删除
- ##### DELETE: /emps/dels/{ids} 删除
### 三、技术支持
- #### 1. 基础框架(SSM-Spring+SpringMVC+Mybatis)
- ##### Spring 5.1.6
- ##### Mybatis 3.5.1
- #### 2. 数据库-Mysql 8.0
- #### 3. 前端框架-BootStrap 3.3.1
- #### 4. 项目依赖管理-Maven 3.6.1
- #### 5. 分页插件 PageHelper
- #### 6. 逆向工程-mybatis-generator
### 四、基础环境搭建
- #### 1. 创建maven-web工程
- #### 2. 导入项目依赖的坐标
- ##### spring core
- ##### spring mvc
- ##### spring jdbc
- ##### spring test
- ##### spring aop
- ##### mysql-connector-jar
- ##### jstl taglib
- ##### serlevt jsp
- ##### mybatis mybatis-spring
- ##### pagehelper
- ##### hiberate validate
- ##### 其他
- #### 3. 引入Bootstrap前端框架
- #### 4. 编写ssm整合配置文件
- ##### web.xml
- ##### mybatis-config.xml
- ##### spring-mybatis.xml
- ##### springMVC.XML
- ##### configGenerator.xml
- #### 5. 测试dao层配置(TestMapper.java)
### 五、查询
- #### 1. 访问index.jsp
- #### 2. index页面发送出查询员工列表请求
- #### 3. EmployeeController接收请求,查出员工数据,返回视图页面
- #### 4. jsp解析数据并显示
### 六、使用ajax+json实现查询及后续功能
- #### 1. index.jsp页面发送ajax请求进行员工数据分页查询
- #### 2. 服务器将查询到的数据以json字符串的形式返回给浏览器
- #### 3. 浏览器收到json字符串,使用js对json进行解析并处理,jquery操作DOM对象,实现数据显示
- #### 4. ajax实现了客户端的无关性
### 七、员工新增
- #### 1. 在index.jsp页面点击“新增”按钮
- #### 2. 弹出填写信息的对话框(BootStrap模态框)
- #### 3. 去数据库查询部门列表,显示在下拉列表
- #### 4. 用户输入数据,完成前后端校验
- ##### js+jquery前端校验数据合理性
- ##### ajax发送请求校验用户名是否重复
- ##### 重要数据后端(JSR303)再次校验
- #### 5. 实现保存
### 八、员工信息修改
- #### 1. 在index.jsp页面点击“编辑”按钮
- #### 2. 弹出用于修改信息的对话框(BootStrap模态框,显示已有信息)
- #### 3. 用户输入数据,进行合理性校验
- #### 4. 点击修改,完成信息更新
### 九、员工删除
- #### 1. 在index.jsp页面点击“删除”按钮
- #### 2. 弹出确认框
- #### 3. 完成删除
- ##### 单个删除 URI: /emps/del/{id}
- ##### 批量删除 URI: /emps/dels/{ids}
### 十、总结
![img](https://github.com/yushengww/atguigu_ssm_crud/blob/master/%7BU15TPJ%7DJN%7BTEGW%5DM%40_4U46.png)
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