查询书籍功能
完善Controller：BookController
@Controller
@RequestMapping("/book")
public class BookController {
//coontroller层调service层
@Autowired
@Qualifier("BookServiceImpl")
private BookService bookService;
//查询全部的书籍，并且返回到书籍展示也命啊
@RequestMapping("/allBook")
public String list(Model model){
List<Books> books = bookService.queryAllBook();
model.addAttribute("list",books);
return "allBook";
}
}
完善首页 index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>首页</title>
<style>
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 5px;
}
</style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
</html>
完善查询书籍页面 allBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍展示</title>
<%--BookStrap美化界面--%>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column" >
<div class="page-header">
<h1>
<small>书籍列表----显示所有书籍</small>
</h1>
</div>
</div>
</div>
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍数量</th>
<th>书籍详情</th>
</tr>
</thead>
<%--书籍从数据库中查询得到 books遍历出来：foreach--%>
<tbody>
<c:forEach var="book" items="${list}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
增加书籍功能
在显示所有书籍页面添加 新增书籍按钮 allBook.jsp
<div class="row">
<div class="col-md-4 column">
<%--toAddBook--%>
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
</div>
</div>
新增跳转功能和添加书籍功能 BookController.java
//跳转到增加书籍页面
@RequestMapping("/toAddBook")
public String toAddPaper(){
return "addBook";
}
//添加书籍的请求
@RequestMapping("/addBook")
public String addBook(Books books){
System.out.println("addBook"+books);
bookService.addBook(books);
return "redirect:/book/allBook"; //重定向到@RequestMapping("/allBook")请求
}
新增添加书籍页面及表单 addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>增加书籍</title>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表----新增书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/addBook" method="">
<div class="form-group">
<label>书籍名称：</label>
<input type="text" name="bookName" class="form-control" required>
</div>
<div class="form-group">
<label>书籍数量：</label>
<input type="text" name="bookCounts" class="form-control" required>
</div>
<div class="form-group">
<label>书籍描述：</label>
<input type="text" name="detail" class="form-control" required >
</div>
<div class="form-group">
<input type="submit" class="form-control" value="添加">
</div>
</form>
</div>
</body>
</html>
修改删除书籍
修改页面 updateBook
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改书籍</title>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表----修改书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="get">
<%--出现的问题，我们提交了sql请求，但是修改失败，看一下sql语句能否执行成功，前端没传id，前端应该传递隐藏域--%>
<input type="hidden" name="bookID" value="${Qbooks.bookID}">
<div class="form-group">
<label>书籍名称：</label>
<input type="text" name="bookName" class="form-control" value="${Qbooks.bookName}" required>
</div>
<div class="form-group">
<label>书籍数量：</label>
<input type="text" name="bookCounts" class="form-control" value="${Qbooks.bookCounts}" required>
</div>
<div class="form-group">
<label>书籍描述：</label>
<input type="text" name="detail" class="form-control" value="${Qbooks.detail}" required >
</div>
<div class="form-group">
<input type="submit" class="form-control" value="修改">
</div>
</form>
</div>
</body>
</html>
增加修改和删除的链接 allBook.jsp
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.bookID}">修改</a>
|
<a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a>
</td>
Controller新增修改和删除方法
//跳转到修改页面
@RequestMapping("/toUpdateBook")
public String toUpdatePaper(int id,Model model){
Books books = bookService.queryBookById(id);
model.addAttribute("Qbooks",books);
return "updateBook";
}
//修改书籍
@RequestMapping("/updateBook")
public String updateBook(Books books){
System.out.println("updateBook:"+books);
bookService.updateBook(books);
return "redirect:/book/allBook";
}
//删除书籍
@RequestMapping("/deleteBook/{bookId}")
public String deleteBook(@PathVariable("bookId") int id){
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
从零开始增加按书名查询功能
BookMapper接口和BookMapper.xml
//查询一本书
Books queryBookByName(@Param("bookName")String bookName);
<select id="queryBookByName" resultType="Books">
select * from ssmbuild.books where bookName=#{bookName};
</select>
BookService接口和BookServiceImpl
//查询一本书
Books queryBookByName(String bookName);
public Books queryBookByName(String bookName) {
return bookMapper.queryBookByName(bookName);
}
Controller
//查询书籍
@RequestMapping("/queryBook")
public String queryBook(String queryBookName,Model model){
Books books = bookService.queryBookByName(queryBookName);
List<Books> list = new ArrayList<Books>();
list.add(books);
if(books==null){
list = bookService.queryAllBook();
model.addAttribute("error","未查到");
}
model.addAttribute("list",list);
return "allBook";
}
前台页面 allBook.jsp
<div class="col-md-8 column">
<%--查询书籍--%>
<form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="get" style="float:right">
<span style="color: red;font-weight: bold">${error}</span>
<input type="text" name="queryBookName" class="form-control" placeholder="请输入要查询的书的名称">
<input type="submit" value="查询" class="btn btn-primary">
</form>
</div>
项目结构
小结及展望
这是第一个SSM整合案例，一定要烂熟于心！
SSM框架的重要程度不言而喻。
原文：https://www.cnblogs.com/CodeHuba/p/13664173.html