SSM框架整合（二）查询和添加功能
查询书籍功能
一、编写BookController类
package com.study.controller;
import com.study.pojo.Books;
import com.study.service.BookService;
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 java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
//controller调service层
@Autowired
@Qualifier("BookServiceImpl")//在Controller中使用 @Autowired注入时必须使用@Qualifier指定实现类
private BookService bookService;
//查询全部的书籍，并返回页面
@RequestMapping("/allBook")
public String list(Model model){
List<Books> list = bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
}
二、编写jsp页面【allBokk.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, initialscale=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 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>
</tr>
</thead>
<%-- 书籍从数据库中查询出来，从这个list中遍历出来：foreach --%>
<tbody>
<c:forEach var="book" items="${requestScope.get('list')}">
<tr>
<td>${book.getBookID()}</td>
<td>${book.getBookName()}</td>
<td>${book.getBookCounts()}</td>
<td>${book.getDetail()}</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
三、编写index.jsp页面
<html>
<head>
<title>$Title$</title>
<style type="text/css">
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 4px;
}
</style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
</html>
四、启动tomcat
1、进入首页，点击进入书籍页面
2、进入书籍页面查看所有书籍
添加书籍功能
一、编写【allBokk.jsp】添加【添加书籍】按钮
<div class="row">
<div class="col-md-4 column">
<a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">添加书籍</a>
</div>
</div>
二、新建addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>新增书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/addBook" method="post">
<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>
三、编写Contoller层添加跳转到【addBook.jsp】页面的方法
//跳转到添加书籍页面
@RequestMapping("/toAddBook")
public String toAddBook(){
return "addBook";
}
四、编写Contoller层，编写添加书籍的方法
//添加书籍的请求
@RequestMapping("/addBook")
public String addBook(Books books){
bookService.addBook(books);
return "redirect:/book/allBook"; //重定向到@RequestMapping("/allBook")请求
}
五、运行测试
1、点击【添加书籍】按钮
2、输入书籍信息，点击【添加】
3、添加成功，返回书籍页面
