2020，基于狂神说的SSM+TOMCAT整合实现简单的图书管理系统
11/13
记录之前的SSM+Tomcat搭建简单的图书管理系统实现增删改查
本小项目参考狂神说的博客，自己写代码实现
工具：Navicat Premium 15
IDEA
Tomcat 8.5
Mysql
Maven
首先是数据库建表：
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,'Linux',5,'从进门到进牢'),
(3,'jdk1.8',3,'jvm是人间痛苦'),
(4,'数据结构与算法基础',5,'我起了一题秒了有什么好说的');
实现如下：
接下来是导入项目依赖，通过创建maven项目的pom.xml文件来导入
<dependencies>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.11version>
<scope>testscope>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.18.12version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>0.2.15version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.47version>
dependency>
<dependency>
<groupId>com.mchangegroupId>
<artifactId>c3p0artifactId>
<version>0.9.5.2version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>servlet-apiartifactId>
<version>2.5version>
dependency>
<dependency>
<groupId>javax.servlet.jspgroupId>
<artifactId>jsp-apiartifactId>
<version>2.2version>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.17version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.5.2version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>2.0.2version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>5.1.9.RELEASEversion>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>5.1.9.RELEASEversion>
dependency>
dependencies>
编写资源过滤
<resources>
<resource>
<directory>src/main/javadirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
<resource>
<directory>src/main/resourcesdirectory>
<includes>
<include>**/*.propertiesinclude>
<include>**/*.xmlinclude>
includes>
<filtering>falsefiltering>
resource>
resources>
写出项目的主题框架！
controller层
dao层
pojo层
service层
然后建立存储资源空间resources
resources里面有mybatis的核心文件，spring的核心文件，实现日志的核心文件
分别是mybatis-config.xml
applicationContext.xml
log4j.properties
database.properties（数据库资源路径）
先写出database.properties
jdbc.drvier=com.mysql.jdbc.Driver（jdbc驱动加载）
jdbc.url=jdbc:mysql://localhost:xxxx(你的端口，一般为3306)/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=数据库登录名
jdbc.password=你自身的数据库连接密码
然后是log4j.properties的编写
#将等级得debug的日志信息输出到console和file中两个目的地，console和file的定义在下面的代码
log4j.rootLogger=DEBUG,console,file
#控制台输出的相关设置
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
#文件输出的相关设置
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./log/lzf.log
#文件的地址
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
#日志输出级别
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
编写mybati的核心配置文件（模板）
applicationContext.xml（模板）
<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
https://www.springframework.org/schema/context/spring-context.xsd">
beans>
写完这些后，目录架构应该是这样的：
然后接下来写各种框架需求，首先是mybatis框架
大体思路：先编写实体类，然后dao层的mapper接口和mapper.xml，最后编写mybatis的核心配置文件
实体类pojo：
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}
//使用lombok注解
mapper接口
import java.util.List;
public interface BookMapper {
//增加
int addBook(Books book);
//删除
int deleteBookById(int id);
//更新
int updateBook(Books books);
//查询
Books queryBookById(int id);
//查询全部
List<Books> queryAllBook();
}
mapper接口的实现类BookMapperImpl
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public class BookMapperImpl implements BookMapper{
@Autowired
@Qualifier("sqlSession")
private SqlSessionTemplate sqlSession;
@Override
public int addBook(Books book) {
BookMapper mapper = sqlSession.getMapper(BookMapper.class);
return mapper.addBook(book);
}
@Override
public int deleteBookById(int id) {
BookMapper mapper = sqlSession.getMapper(BookMapper.class);
return mapper.deleteBookById(id);
}
@Override
public int updateBook(Books books) {
BookMapper mapper = sqlSession.getMapper(BookMapper.class);
return mapper.updateBook(books);
}
@Override
public Books queryBookById(int id) {
BookMapper mapper = sqlSession.getMapper(BookMapper.class);
return mapper.queryBookById(id);
}
@Override
public List<Books> queryAllBook() {
BookMapper mapper = sqlSession.getMapper(BookMapper.class);
return mapper.queryAllBook();
}
}
编写BookMapper.xml，这个是重点内容
<mapper namespace="com.lzf.dao.BookMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books(bookName,bookCounts,detail)
value (#{bookName},#{bookCounts},#{detail})
insert>
<delete id="deleteBookById" parameterType="int">
delete from ssmbuild.books where bookId=#{bookId}
delete>
<update id="updateBook" parameterType="Books">
update ssmbuild.books
set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
where bookID=#{bookID}
update>
<select id="queryBookById" resultType="Books">
select * from ssmbuild.books where bookId=#{bookID}
select>
<select id="queryAllBook" resultType="Books">
select * from ssmbuild.books
select>
mapper>
注意传入参数和返回参数类型，还有对应好mapper接口的方法名
到这里，再写完mybatis-config.xml，mybatis的框架就写完了
<configuration>
<settings>
<setting name="logImpl" value="LOG4J"/>//日志存放类型
settings>
<typeAliases>
<package name="com.lzf.pojo"/>//实体类的路径
typeAliases>
<mappers>
<mapper class="com.lzf.dao.BookMapper"/>//Mapper接口路径
mappers>
configuration>
写完mybatis框架之后接下来就是spring的框架，首先从spring-service实现业务开始。
也就是从service层开始
编写业务的接口，存放业务的抽象方法
import org.springframework.stereotype.Service;
import java.util.List;
public interface BookService {
//增加一个Book
int addBook(Books book);
//根据id删除一个Book
int deleteBookById(int id);
//更新Book
int updateBook(Books books);
//根据id查询,返回一个Book
Books queryBookById(int id);
//查询全部Book,返回list集合
List<Books> queryAllBook();
}
写出接口的实现类，实现业务
import com.lzf.dao.BookMapperImpl;
import com.lzf.pojo.Books;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public class BookServiceImpl implements BookService{
@Autowired
@Qualifier("bookMapperImpl")
private BookMapperImpl bookMapper;
@Override
public int addBook(Books book) {
return bookMapper.addBook(book);
}
@Override
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
@Override
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
@Override
public Books queryBookById(int id) {
return bookMapper.queryBookById(id);
}
@Override
public List<Books> queryAllBook() {
return bookMapper.queryAllBook();
}
}
这里注意的是，service层实现的业务也与dao层中的mapper功能有所联系
写完service层之后，接下来就要给dao层和service层注入bean
首先在spring-dao.xml和spring-service.xml中编写
spring-dao.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns="http://www.springframework.org/schema/beans"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config/>
<context:component-scan base-package="com.lzf.dao"/>
<!--DateSource：使用spring的数据源替换mybatis的设置：c3p0、dbcp、druid-->
<!--spring自带数据源-->
<!-- <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">-->
<!-- <property name="driverClassName" value="com.mysql.jdbc.Driver"/>-->
<!-- <property name="url" value="jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=UTF-8"/>-->
<!-- <property name="username" value="root"/>-->
<!-- <property name="password" value="123456"/>-->
<!-- </bean>-->
<!-- JNDI DataSource for J2EE environments -->
<!--读取数据库配置文件-->
<context:property-placeholder location="classpath:database.properties"/>
<!--druid数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxActive" value="20"/>
<property name="initialSize" value="1"/>
<property name="maxWait" value="60000"/>
<property name="minIdle" value="1"/>
<property name="timeBetweenEvictionRunsMillis" value="3000"/>
<property name="minEvictableIdleTimeMillis" value="300000"/>
<property name="validationQuery" value="SELECT * FROM ssmbuild.books"/>
<property name="testWhileIdle" value="true"/>
<property name="testOnBorrow" value="false"/>
<property name="testOnReturn" value="false"/>
<!-- mysql 不支持 poolPreparedStatements-->
<!--<property name="poolPreparedStatements" value="true" />-->
<!--<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />-->
<!-- 开启Druid的监控统计功能 -->
<property name="filters" value="stat"/>
</bean>
<!--C3P0数据源-->
<!-- <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">-->
<!-- <!– 配置连接池属性 –>-->
<!-- <property name="driverClass" value="${jdbc.driver}"/>-->
<!-- <property name="jdbcUrl" value="${jdbc.url}"/>-->
<!-- <property name="user" value="${jdbc.username}"/>-->
<!-- <property name="password" value="${jdbc.password}"/>-->
<!-- <!– c3p0连接池的私有属性 –>-->
<!-- <property name="maxPoolSize" value="30"/>-->
<!-- <property name="minPoolSize" value="10"/>-->
<!-- <!– 关闭连接后不自动commit –>-->
<!-- <property name="autoCommitOnClose" value="false"/>-->
<!-- <!– 获取连接超时时间 –>-->
<!-- <property name="checkoutTimeout" value="10000"/>-->
<!-- <!– 当获取连接失败重试次数 –>-->
<!-- <property name="acquireRetryAttempts" value="2"/>-->
<!-- </bean>-->
<!--sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--配置数据源-->
<property name="dataSource" ref="dataSource"/>
<!--mybatis的核心配置文件，但是可以不写-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!--相当于mappe package 添加mybatis.xml配置文件-->
<!--mybatis配置文件中能配置的在这都能配置-->
</bean>
<!--SqlSessionTemplate:就是SqlSession-->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<!--只能使用构造器注入sqlSessionFactory，因为SqlSessionTemplate没有set方法-->
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>
</beans>
这里有一个spring的高频面试题，顺带记忆一下！
BeanFactory：
BeanFactory是接口，给具体的IOC容器的实现提供了规范，它是负责创建和管理bean的一个工厂。
FactoryBean:
FactoryBean也是接口，主要用于返回BeanFactory生产好的bean对象，如果要获取FactoryBean对象，请在id前面加一个&符号来获取。
BeanFactory和ApplicationContext的区别是什么：
BeanFactory负责读取bean配置文档，管理bean的加载，实例化，维护bean之间的依赖关系，负责bean的声明周期。
然后是spring-service.xml的编写
<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
https://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.lzf.service"/>
<context:annotation-config/>
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
bean>
beans>
然后就是springmvc的框架
先写web层
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>DispatcherServletservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:applicationContext.xmlparam-value>
init-param>
<load-on-startup>1load-on-startup>
servlet>
<servlet-mapping>
<servlet-name>DispatcherServletservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
<filter>
<filter-name>encodingFilterfilter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
filter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>utf-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>encodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>
<session-config>
<session-timeout>15session-timeout>
session-config>
<servlet>
<servlet-name>DruidStatViewservlet-name>
<servlet-class>com.alibaba.druid.support.http.StatViewServletservlet-class>
servlet>
<servlet-mapping>
<servlet-name>DruidStatViewservlet-name>
<url-pattern>/druid/*url-pattern>
servlet-mapping>
web-app>
spring-mvc.xml编写
<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"
xmlns="http://www.springframework.org/schema/beans"
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
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<mvc:annotation-driven/>
<mvc:default-servlet-handler/>
<context:component-scan base-package="com.lzf.controller"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
bean>
beans>
整合spring的bean
applicationContext文件编写
<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
https://www.springframework.org/schema/context/spring-context.xsd">
<import resource="spring-dao.xml"/>
<import resource="spring-service.xml"/>
<import resource="spring-mvc.xml"/>
beans>
编写controller层
import com.lzf.service.BookServiceImpl;
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 java.util.List;
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
@Qualifier("bookServiceImpl")
private BookServiceImpl bookService;
@RequestMapping("/allBook")
public String allBook(Model model){
List<Books> books1 = bookService.queryAllBook();
System.out.println("查询书籍列表");
for (Books books : books1) {
System.out.println(books);
}
model.addAttribute("list",books1);
return "allBook";
}
@RequestMapping("/toAddBook")
public String toAddPaper() {
return "addBook";
}
@RequestMapping("/addBook")
public String addPaper(Books books) {
System.out.println(books);
bookService.addBook(books);
return "redirect:/book/allBook";
}
@RequestMapping("/toUpdateBook")
public String toUpdateBook(Model model, int id) {
Books books = bookService.queryBookById(id);
System.out.println(books);
model.addAttribute("book",books );
return "updateBook";
}
@RequestMapping("/updateBook")
public String updateBook(Model model, Books book) {
System.out.println(book);
bookService.updateBook(book);
Books books = bookService.queryBookById(book.getBookID());
model.addAttribute("books", books);
return "redirect:/book/allBook";
}
@RequestMapping("/del/{bookId}")
public String deleteBook(@PathVariable("bookId") int id) {
bookService.deleteBookById(id);
return "redirect:/book/allBook";
}
}
接下来就是页面的可视化实现
首先是首页index.jsp
<%@ 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>
然后就是各种功能的视图实现
添加：
<%@ 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="${pageContext.request.contextPath}/book/addBook" method="post">
书籍名称：<input type="text" name="bookName"><br><br><br>
书籍数量：<input type="text" name="bookCounts"><br><br><br>
书籍详情：<input type="text" name="detail"><br><br><br>
<input type="submit" value="添加">
</form>
</div>
更新：
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改信息</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- 引入 Bootstrap -->
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="row clearfix">
<div class="col-md-12 column">
<div class="page-header">
<h1>
<small>修改信息</small>
</h1>
</div>
</div>
</div>
<form action="${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>
查询：
<%@ 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>
至此，SSM就搭建完成了，总体来说就是比较繁琐，都是按部就班的执行流程，SSM的缺点也应该是这样吧，不过这样也有好处，就是思路比较清晰，最后操作就是在idea中链接数据库和启动Tomcat。
链接数据库：
选择mysql
接下来就是启动Tomcat
在deployment中选择添加新的war包之后，命名路径，就可以启动Tomcat测试项目成果了！
测试如下：
首页：
查询功能：
更新功能：
在这里为止，这个SSM搭建算是完成了。这次是我除了pom文件和模板是复制之外，其余的都是自己手敲的。怎么说呢，中间也有报过错，例如找不到bean，其实是我粗心大意，把bean的返回类型填写错误，如果tomcat启动网页有报错的话，还是参考报错内容一一排查，不要嫌麻烦，排查也是一种学习。