概述

通过对数据库中一张表的CRUD，将相应的操作结果渲染到页面上。
如果想查看Spring Boot架构的同等规模的项目，可参考此篇博客Spring Boot项目实例——简易版商城管理系统
由于广大读者要求源码，作者通过这篇博客还原了项目（当然有一些隐藏的坑），然后将该项目上传到了Gitee，在末尾的后记部分有源码地址，读者可参考。

准备

• 环境：

  • IDEA
  • MySQL 5.7.19
  • Tomcat 9
  • Maven 3.6

• 要求：

  • 掌握MySQL数据库
  • 掌握Spring，
  • 掌握SpringMVC
  • 掌握MyBatis知识
  • 掌握简单的前端知识

实现

1.搭建数据库

1. 创建一个存放书籍数据的数据库（ssmbuild），并在该数据库中建立一个名为books的表，代码如下：

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
  `bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
  `bookName` VARCHAR(100) NOT NULL COMMENT '书名',
  `bookCounts` INT(11) NOT NULL COMMENT '数量',
  `detail` VARCHAR(200) NOT NULL COMMENT '描述',
  KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8

INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES 
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

2. 写好数据库的配置文件database.properties，该文件可以放在resources目录下，代码如下：

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

3. 在Maven中导入数据库连接所需要的驱动包（mysql-connector），代码如下：

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>

---

2.实现pojo层

在项目的java目录下新建pojo包，因为数据库中只有一个表，所以只需要编写一个实体类Book即可，代码如下所示：

package pojo;

public class Book {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;

    public Book() {
    }

    public Book(int bookID, String bookName, int bookCounts, String detail) {
        this.bookID = bookID;
        this.bookName = bookName;
        this.bookCounts = bookCounts;
        this.detail = detail;
    }

    public int getBookID() {
        return bookID;
    }

    public void setBookID(int bookID) {
        this.bookID = bookID;
    }

    public String getBookName() {
        return bookName;
    }

    public void setBookName(String bookName) {
        this.bookName = bookName;
    }

    public int getBookCounts() {
        return bookCounts;
    }

    public void setBookCounts(int bookCounts) {
        this.bookCounts = bookCounts;
    }

    public String getDetail() {
        return detail;
    }

    public void setDetail(String detail) {
        this.detail = detail;
    }

    @Override
    public String toString() {
        return "Book{" +
                "bookID=" + bookID +
                ", bookName='" + bookName + '\'' +
                ", bookCounts=" + bookCounts +
                ", detail='" + detail + '\'' +
                '}';
    }
}

---

3.实现dao层

1. 在项目的java目录下新建dao包，编写dao层接口BookDao即可，代码如下所示：

package dao;

import org.apache.ibatis.annotations.Param;
import pojo.Book;

import java.util.List;

public interface BookDao {

    //增加一个Books
    int addBook(Book books);

    //根据id删除Books
    int deleteBookByID(@Param("bookID") int id);

    //更新Books
    int updateBook(Book books);

    //根据id查询Book
    Book queryBookByID(@Param("bookID") int id);

    //查看全部的Book
    List<Book> queryAllBook();

}

2. 在Maven中导入Mybatis所需要的驱动包（mybatis），代码如下：

    <!-- MyBatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>

3. 在dao包下编写对应的映射文件BookMapper.xml，代码如下：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="dao.BookDao">
    <!--//增加一个Books-->
    <insert id="addBook" parameterType="Book">
        insert into ssmbuild.books(bookID , bookName, bookCounts, detail)
        values (#{bookID},#{bookName},#{bookCounts},#{detail})
    </insert>

    <!--//根据id删除Books-->
    <delete id="deleteBookByID" parameterType="int">
        delete from ssmbuild.books where bookID = #{bookID}
    </delete>

    <!--//更新Books-->
    <update id="updateBook" parameterType="Book">
        update ssmbuild.books
        set bookName = #{bookName} , bookCounts = #{bookCounts} ,detail = #{detail}
        where bookID = #{bookID}
    </update>

    <!--//根据id查询Book-->
    <select id="queryBookByID" resultType="Book">
        select * from ssmbuild.books where bookID = #{bookID}
    </select>

    <!--//查看全部的Book-->
    <select id="queryAllBook" resultType="Book">
        select * from ssmbuild.books
    </select>

</mapper>

4. 在resources目录下编写Mybatis的配置文件Mybatis-config.xml，用于配置别名，以及注册映射文件，代码如下：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <typeAliases>
        <package name="pojo"/>
    </typeAliases>

    <mappers>
        <mapper resource="dao/BookMapper.xml"></mapper>
    </mappers>


</configuration>

---

---

4.实现service层

1. 在项目的java目录下新建service包，编写service层接口BookService，代码如下所示：

package service;

import org.apache.ibatis.annotations.Param;
import pojo.Book;

import java.util.List;

public interface BookService {

    //增加一个Books
    int addBook(Book books);

    //根据id删除Books
    int deleteBookByID( @Param("bookID") int id);

    //更新Books
    int updateBook(Book books);

    //根据id查询Book
    Book queryBookByID(@Param("bookID") int id);

    //查看全部的Book
    List<Book> queryAllBook();

}

2. 在service包下编写对应的实现类BookServiceImpl，代码如下：

package service;

import dao.BookDao;
import pojo.Book;

import java.util.List;

public class BookServiceImpl implements BookService{

    // 组合
    private BookDao bookDao;

    public void setBookDao(BookDao bookDao) {
        this.bookDao = bookDao;
    }


    @Override
    public int addBook(Book books) {
        return bookDao.addBook(books);
    }

    @Override
    public int deleteBookByID(int id) {
        return bookDao.deleteBookByID(id);
    }

    @Override
    public int updateBook(Book books) {
        return bookDao.updateBook(books);
    }

    @Override
    public Book queryBookByID(int id) {
        return bookDao.queryBookByID(id);
    }

    @Override
    public List<Book> queryAllBook() {
        return bookDao.queryAllBook();
    }
}

---

5.配置Spring整合dao层

1. 在本例中使用c3p0连接池，需要在Maven导入相关的包，代码如下：

    <!-- 数据库连接池 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
    <!-- mybatis-spring整合包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--Spring相关包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.24.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.24.RELEASE</version>
    </dependency>

2. 在resources目录下新建spring文件夹，并在该文件夹中新建一个名为spring-dao.xml的配置文件，用于让Spring整合mybatis，代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">

    <!--整合Mybatis-->
    <!--1.关联数据库文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.数据库连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!--数据库的基本配置-->
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--3.sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--关联mybatis-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--4.注册dao层Bean-->
    <!--动态实现dao接口注入Spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--绑定sqlSessionFactory-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--扫描包-->
        <property name="basePackage" value="dao"/>
    </bean>

    <!--5.扫描包-->
    <context:component-scan base-package="dao"/>

</beans>

---

6.配置Spring整合service层

在resources/spring文件夹中新建一个名为spring-service.xml的配置文件，用于让Spring整合service层，代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">

    <!--1.扫描包-->
    <context:component-scan base-package="service"/>

    <!--2.手动配置bean-->
    <bean id="bookServiceImpl" class="service.BookServiceImpl">
        <property name="bookDao" ref="bookDao"/>
    </bean>

    <!--3.事务管理-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>


</beans>

---

7.配置Spring整合Spring MVC

1. 修改webapp目录下的web.xml文件，代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
         http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         id="WebApp_ID" version="3.0">

  <!--1.DispatchServlet-->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--关联Spring配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>


    <!--2.字符编码过滤-->
  <!--字符编码过滤-->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <!--<filter-class>com.kuang.filter.GenericEncodingFilter</filter-class>-->
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <!--参数：CharacterEncodingFilter-->
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

2. 在resources/spring文件夹中新建一个名为spring-mvc.xml的配置文件，用于让Spring整合servlet层，代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--1.扫描包-->
    <context:component-scan base-package="controller"/>

    <!--2.静态资源过滤-->
    <mvc:default-servlet-handler/>

    <!--3.注解驱动-->
    <mvc:annotation-driven/>

    <!--4.视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

3. 在目录中新建一个名为filter的包，在包中新建名为GenericEncodingFilter的类，用于字符编码过滤，代码如下：

package filter;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;

/**
 * 解决get和post请求 全部乱码的过滤器
 */
public class GenericEncodingFilter implements Filter {

    @Override
    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        //处理response的字符编码
        HttpServletResponse myResponse=(HttpServletResponse) response;
        myResponse.setContentType("text/html;charset=UTF-8");

        // 转型为与协议相关对象
        HttpServletRequest httpServletRequest = (HttpServletRequest) request;
        // 对request包装增强
        HttpServletRequest myrequest = new MyRequest(httpServletRequest);

        chain.doFilter(myrequest, response);
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

}

//自定义request对象，HttpServletRequest的包装类
class MyRequest extends HttpServletRequestWrapper {

    private HttpServletRequest request;
    //是否编码的标记
    private boolean hasEncode;
    //定义一个可以传入HttpServletRequest对象的构造函数，以便对其进行装饰
    public MyRequest(HttpServletRequest request) {
        super(request);// super必须写
        this.request = request;
    }

    // 对需要增强方法 进行覆盖
    @Override
    public Map getParameterMap() {
        // 先获得请求方式
        String method = request.getMethod();
        if (method.equalsIgnoreCase("post")) {
            // post请求
            try {
                // 处理post乱码
                request.setCharacterEncoding("utf-8");
                return request.getParameterMap();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        } else if (method.equalsIgnoreCase("get")) {
            // get请求
            Map<String, String[]> parameterMap = request.getParameterMap();
            if (!hasEncode) { // 确保get手动编码逻辑只运行一次
                for (String parameterName : parameterMap.keySet()) {
                    String[] values = parameterMap.get(parameterName);
                    if (values != null) {
                        for (int i = 0; i < values.length; i++) {
                            try {
                                // 处理get乱码
                                values[i] = new String(values[i]
                                        .getBytes("ISO-8859-1"), "utf-8");
                            } catch (UnsupportedEncodingException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }
                hasEncode = true;
            }
            return parameterMap;
        }
        return super.getParameterMap();
    }

    //取一个值
    @Override
    public String getParameter(String name) {
        Map<String, String[]> parameterMap = getParameterMap();
        String[] values = parameterMap.get(name);
        if (values == null) {
            return null;
        }
        return values[0]; // 取回参数的第一个值
    }

    //取所有值
    @Override
    public String[] getParameterValues(String name) {
        Map<String, String[]> parameterMap = getParameterMap();
        String[] values = parameterMap.get(name);
        return values;
    }
}

---

8.配置Spring整合文件

1. 在resources中新建一个名为applicationContext.xml的配置文件，用于整合上面的spring-dao.xml、spring-service.xml、spring-mvc.xml，代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd">
    
    <!--整合Spring-->
    <import resource="classpath:spring/spring-dao.xml"/>
    <import resource="classpath:spring/spring-service.xml"/>
    <import resource="classpath:spring/spring-mvc.xml"/>

</beans>

2. 在Maven导入jsp和servlet的包，代码如下：

   <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

---

9.实现controller层

在项目的java目录下新建controller包，编写控制器BookController，代码如下所示：

package controller;

import org.apache.ibatis.annotations.Param;
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;
import pojo.Book;
import service.BookService;

import java.util.List;

@Controller
@RequestMapping("/book")
public class BookController {
    @Autowired
    @Qualifier("bookServiceImpl")
    private BookService bookService;

    // 展示全部的书籍
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Book> list = bookService.queryAllBook();
        model.addAttribute("list",list);
        return "allBook";
    }

    // 跳转到新增书籍页面
    @RequestMapping("/toAddBook")
    public String toAddBookPage(){
        return "addBook";
    }

    // 增加书籍
    @RequestMapping("/addBook")
    public String addBook(Book book){
        bookService.addBook(book);
        return "redirect:/book/allBook";
    }

    // 跳转到修改书籍页面
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(int id,Model model){
        Book book = bookService.queryBookByID(id);
        model.addAttribute("book",book);
        return "updateBook";
    }

    // 修改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Book book,Model model){
        bookService.updateBook(book);
        // 更新最新的书籍
        Book book1 = bookService.queryBookByID(book.getBookID());
        model.addAttribute("books",book1);
        return "redirect:/book/allBook";
    }

    // 删除书籍，使用Restful风格
    @RequestMapping("/del/{bookID}")
    public String delete(@PathVariable("bookID") int id){
        bookService.deleteBookByID(id);
        return "redirect:/book/allBook";
    }
}

---

10.实现view层

1. 编写主页index.jsp，用于进入查看所有图书的页面，代码如下：

<%@ 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>

2. 在WEB-INF目录下新建jsp目录，并在该目录下编写allBook.jsp，用于查看所有图书，代码如下：

<%@ 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>

3. 在WEB-INF/jsp目录下编写addBook.jsp，用于添加图书，代码如下：

<%@ 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>

4. 在WEB-INF/jsp目录下编写updateBook.jsp，用于添加图书，代码如下：

<%@ 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>

---

11.运行前检查

1. Maven的包导入应如下所示（注意添加build标签中的resources标签，该标签用于让Maven导入相关资源）：

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.moxitao</groupId>
  <artifactId>SSMbuild-test</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>SSMbuild-test Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <!--junit部分-->
    <!--测试模块单元-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!--Mybatis部分-->
    <!--数据库驱动包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>
    <!--mybatis的包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.6</version>
    </dependency>
    <!--Mybatis部分完结-->

    <!--Spring部分-->
    <!--mybatis-srping整合包-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--第三方数据源：c3p0-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
    <!--Spring相关的-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.24.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.24.RELEASE</version>
    </dependency>
    <!--Spring部分完结-->

    <!--SpringMVC部分-->
    <!--servlet-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
    </dependency>
    <!--jsp-->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
    </dependency>
    <!--jstl-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
  </dependencies>
  <!--SpringMVC部分完结-->


  <build>
    <finalName>SSMbuild-test</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>

    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
      <resource>
        <directory>src/main/resources</directory>
        <includes>
          <include>**/*.xml</include>
          <include>**/*.properties</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>
  </build>
</project>

2. 项目目录如图所示：
   

运行

配置好Tomcat运行环境后，即可开始运行，结果图如下：

1. 首页（index.jsp）
   
2. 显示全部书籍（allBook.jsp）
   
3. 增加书籍页面（addBook.jsp）
   
4. 修改书籍页面（updateBook.jsp）
   

后记

尽管现在的Java Web项目的开发多用Spring Boot进行搭建，但是使用相对原生的SSM（Spring + Spring MVC + Mybatis）进行开发，不仅能让我们对于Web项目的搭建流程更加熟悉，还会对我们在日后的学习和工作中大有裨益
项目的源码地址：SSM版本 简易管理系统，由于该博客之前有一些细节错误尚未修正，这里在搭建项目的时候进行了部分修改。对按照该博客搭建项目后遇到坑的读者表示抱歉，感谢您的浏览！