SSM整合(4) 配置一万年终于开始写代码了！
实现查询书籍功能
编写一个控制类
package controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import pojo.Books;
import service.BookService;
import java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
//controller调用service
@Autowired//自动注入
//当容器扫描到@Autowied 就会在IoC容器自动查找需要的bean，并装配给该对象的属性
@Qualifier("BookServiceImpl")
//指定注入哪个对象
private BookService bookService;
//查询全部书籍,并且返回到一个书籍展示界面
@RequestMapping("/allBook")
public String list(Model model){
List<Books> list = bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
}
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: aqua;
border-radius: 5px;}
</style>
</head>
<body>
<h3>
<!--取出部署的应用程序名，这样不管如何部署，所用路径都是正确的。-->
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
</html>
allBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍列表</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表 —— 显示所有书籍</small>
</h1>
</div>
</div>
</div>
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a>
</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>书籍名字</th>
<th>书籍数量</th>
<th>书籍详情</th>
<th>操作</th>
</tr>
</thead>
<tbody>
<c:forEach var="book" items="${requestScope.get('list')}">
<tr>
<td>${book.getBookID()}</td>
<td>${book.getBookName()}</td>
<td>${book.getBookCounts()}</td>
<td>${book.getDetail()}</td>
<td>
<a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
<a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
实现增加功能
添加两个方法
@RequestMapping("/toAddBook")
public String toAddPage(){
return "addBook";
}
@RequestMapping("/addBook")
public String addBook(Books books){
bookService.addBook(books);
return "redirect:/book/allBook";
}
addBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>新增书籍</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/addBook" method="post">
书籍名称：<input type="text" name="bookName" required><br><br><br>
书籍数量：<input type="text" name="bookCounts" required><br><br><br>
书籍详情：<input type="text" name="detail" required><br><br><br>
<input type="submit" value="添加">
</form>
</div>
实现更新功能
添加两个方法
@RequestMapping("/toUpdateBook")
public String toUpdateBook(int id,Model model){
Books books=bookService.queryBookById(id);
model.addAttribute("book",books);
return "updateBook";
}
@RequestMapping("/updateBook")
public String updateBook(Books books){
bookService.updateBook(books);
return "redirect:/book/allBook";
}
updateBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改信息</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/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>修改信息</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="post">
<input type="hidden" name="bookID" value="${book.getBookID()}"/>
书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"/>
书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
书籍详情：<input type="text" name="detail" value="${book.getDetail() }"/>
<input type="submit" value="提交"/>
</form>
</div>
实现删除功能
使用restful风格
@RequestMapping("/del/{bookID}")
public String deleteBook(@PathVariable("bookID") int id){
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
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