整合SSM框架2：CRUD功能实现

参考视频：【狂神说Java】SpringMVC最新教程IDEA版通俗易懂点击观看

文章目录

[注意（给项目添加 lib 目录）](#注意（给项目添加 lib 目录）)
BookController类编写
[编写首页 index.jsp](#编写首页 index.jsp)
[书籍列表页面 allbook.jsp](#书籍列表页面 allbook.jsp)
添加书籍页面：addBook.jsp
[修改书籍页面 updateBook.jsp](#修改书籍页面 updateBook.jsp)

注意（给项目添加 lib 目录）

依赖包没加载进去

BookController类编写

方法一：查询全部书籍

java 复制代码

package com.findx.controller;

import com.findx.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;

@Controller
@RequestMapping("/book")
public class BookController {
    //Controller调用Service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //查询全部的书籍并且返回到一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        model.addAttribute("list",bookService.queryAllBook());
        return "allBook";
    }
}

方法二：添加书籍

java 复制代码

package com.findx.controller;

import com.findx.pojo.Books;
import com.findx.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;

@Controller
@RequestMapping("/book")
public class BookController {
    //Controller调用Service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //查询全部的书籍并且返回到一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        model.addAttribute("list",bookService.queryAllBook());
        return "allBook";
    }
    //跳转到添加书籍页面
    @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allBook页面
    }
}

方法三：修改与删除书籍

java 复制代码

package com.findx.controller;

import com.findx.pojo.Books;
import com.findx.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.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/book")
public class BookController {
    //Controller调用Service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //查询全部的书籍并且返回到一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        model.addAttribute("list",bookService.queryAllBook());
        return "allBook";
    }
    //跳转到添加书籍页面
    @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allBook页面
    }
    //跳转到修改书籍页面
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model,int id){
        Books books = bookService.queryBookById(id);
        System.out.println("toUpdateBook=>"+books);
        model.addAttribute("book",books);
        return "updateBook";
    }
    //修改书籍的请求
    @RequestMapping("/updateBook")
    public String updateBook(Model model,Books books){
        System.out.println("updateBook=>"+books);
        bookService.updateBook(books);
        Books book = bookService.queryBookById(books.getBookID());
        model.addAttribute("book",book);
        return "redirect:/book/allBook";
    }
    //删除书籍的请求
    @RequestMapping("/del/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }
}

编写首页 index.jsp

html 复制代码

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
  <title>首页</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">点击进入列表页</a>
</h3>
</body>
</html>

书籍列表页面 allbook.jsp

html 复制代码

<%@ 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>

添加书籍页面：addBook.jsp

html 复制代码

<%@ 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"><br><br><br>
        书籍数量：<input type="text" name="bookCounts"><br><br><br>
        书籍详情：<input type="text" name="detail"><br><br><br>
        <input type="submit" value="添加">
    </form>
</div>

修改书籍页面 updateBook.jsp

html 复制代码

<%@ 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>