SSM整合：查询书籍功能
1.业务层controller
package com.peach.controller;
import com.peach.pojo.Books;
import com.peach.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")
private BookService bookService;
//查询全部的书籍，并返回到一个书籍展示页面
//进入这个方法就会查询到书籍并且返回到前端页面 （allBook页面）
@RequestMapping("/allBook")
public String list(Model model){
List<Books> list = bookService.queryAllBook();
model.addAttribute("list",list);
return "allBook";
}
}
2.前端页面
- 先进入index.jsp
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
-
通过index.jsp进入allBook.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>书籍展示</title>
<%--BookStrap美化界面--%>
<link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">|
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>书籍列表--显示所有书籍</small>
</h1>
</div>
</div>
</div
<div class="row clearfix">
<div class="col-md-12 column">
<table class="table table-hover table-striped">
<thead>
<tr>
<th>书籍编号</th>
<th>书籍名称</th>
<th>书籍数量</th>
<th>书籍详情</th>
</tr>
</thead>
<%--书籍从数据库中查询出来，从这个list中遍历出来：foreach--%>
<tbody>
<c:forEach var="book" items="${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>
-
业务层
//跳转到增加书籍页面 @RequestMapping("/toAddBook") public String toAddPager(){ 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"; } -
addBook.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</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>新增书籍</small> </h1> </div> </div> </div> <form action="${pageContext.request.contextPath}/book/addBook" method="post"> <div class="form-group"> <label >书籍名称</label> <input type="text" name="bookName" class="form-control"> </div> <div class="form-group"> <label >书籍数量</label> <input type="text" name="bookCounts" class="form-control"> </div> <div class="form-group"> <label >书籍描述</label> <input type="text" name="detail" class="form-control"> </div> <div class="form-group"> <input type="submit" class="form-control" value="添加"> </div> </form> </div> </body> </html>
**注意：**整体思路同增加书籍
-
allBook.jsp页面
<%--书籍从数据库中查询出来，从这个list中遍历出来：foreach--%> <tbody> <c:forEach var="book" items="${list}"> <tr> <td>${book.bookID}</td> <td>${book.bookName}</td> <td>${book.bookCounts}</td> <td>${book.detail}</td> <td> <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a> | <a href="">删除</a> </td> </tr> </c:forEach> </tbody> -
BookController.java
//跳转到修改页面
@RequestMapping("/toUpdate")
public String toUpdatePaper(int id,Model model){
Books books = bookService.queryBookById(id);
model.addAttribute("QBook",books);
return "updateBook";
}
//修改书籍
@RequestMapping("/updateBook")
public String updateBook(Books books){
bookService.updateBook(books);
return "redirect:/book/allBook";
}
- pdate.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改数据</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>修改书籍</small>
</h1>
</div>
</div>
</div>
<form action="${pageContext.request.contextPath}/book/updateBook" method="post">
<input type="hidden" name="bookID" value="${QBook.bookID}">
<div class="form-group">
<label >书籍名称</label>
<input type="text" name="bookName" class="form-control" value="${QBook.bookName}" required>
</div>
<div class="form-group">
<label >书籍数量</label>
<input type="text" name="bookCounts" class="form-control" value="${QBook.bookCounts}" required>
</div>
<div class="form-group">
<label >书籍描述</label>
<input type="text" name="detail" class="form-control" value="${QBook.detail}" required>
</div>
<div class="form-group">
<input type="submit" class="form-control" value="修改">
</div>
</form>
</div>
</body>
</html>
