图书项目：整合SSM
步骤：
pom文件：导包，写入静态资源导出配置，连接数据库
建包：controller dao/mapper pojo service
配置文件：mybatis-config.xml applicationContext.xml（Spring的配置文件） database.properties
1. mybatis-config.xml
2. applicationContext.xml（Spring的配置文件）
3. database.properties
// 跳转到修改页面
@RequestMapping("/toUpdate")
public String toUpdatePaper(int id, Model model){
Books books = bookService.getBooksByID(id);
model.addAttribute("QBooks", books);
return "updateBook";
}<%--
Created by IntelliJ IDEA.
User: wangl
Date: 2023/2/17
Time: 19:33
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改书籍</title>
<%-- BootStrap美化界面--%>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
</head>
<body>
<%----%>
<div class="container"> <%--使用bootStrap样式--%>
<div class="row clearfix"> <%--清除浮动--%>
<div class="clo-md-12 column"> <%--把中等屏幕等分为12份--%>
<div class="page-header">
<h1>
<small>修改书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/toUpdate" method="post">
<div class="form-group">
<label>书籍名称：</label>
<input type="text" name="bookName" class="form-control" value="${QBooks.bookName}" required> <%--name必须与类定义中的变量名相同，required：前端必须添加了值才能提交--%>
</div>
<div class="form-group">
<label>书籍数量：</label>
<input type="text" name="bookCounts" class="form-control" value="${QBooks.bookCounts}" required>
</div>
<div class="form-group">
<label>书籍描述：</label>
<input type="text" name="detail" class="form-control" value="${QBooks.detail}" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="修改">
</div>
</form>
</div>
</body>
</html>${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}