1、新建一Maven項目！ssmbuild ， 添加web的支持
2、導入相關的pom依賴！

<dependencies><!--Junit--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!--數據庫驅動--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><!-- 數據庫連接池 --><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.5.2</version></dependency><!--Servlet - JSP --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.2</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!--Mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>2.0.2</version></dependency><!--Spring--><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.1.9.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.1.9.RELEASE</version></dependency> </dependencies>

3、Maven資源過濾設置

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

4、建立基本結構和配置框架！
com.kuang.pojo

com.kuang.dao

com.kuang.service

com.kuang.controller

mybatis-config.xml

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

applicationContext.xml

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"></beans>

Mybatis層編寫
1、數據庫配置文件 database.properties

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

2、IDEA關聯數據庫
3、編寫MyBatis的核心配置文件

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration><typeAliases><package name="com.kuang.pojo"/></typeAliases><mappers><mapper resource="com/kuang/dao/BookMapper.xml"/></mappers></configuration>

4、編寫數據庫對應的實體類 com.kuang.pojo.Books

使用lombok插件！

package com.kuang.pojo;import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor;@Data @AllArgsConstructor @NoArgsConstructor public class Books {private int bookID;private String bookName;private int bookCounts;private String detail;}

5、編寫Dao層的 Mapper接口！
package com.kuang.dao;

import com.kuang.pojo.Books;
import java.util.List;

public interface BookMapper {

//增加一個Book
int addBook(Books book);

//根據id刪除一個Book
int deleteBookById(int id);

//更新Book
int updateBook(Books books);

//根據id查詢,返回一個Book
Books queryBookById(int id);

//查詢全部Book,返回list集合
List queryAllBook();

}

6、編寫接口對應的 Mapper.xml 文件。需要導入MyBatis的包

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.kuang.dao.BookMapper"><!--增加一個Book--><insert id="addBook" parameterType="Books">insert into ssmbuild.books(bookName,bookCounts,detail)values (#{bookName}, #{bookCounts}, #{detail})</insert><!--根據id刪除一個Book--><delete id="deleteBookById" parameterType="int">delete from ssmbuild.books where bookID=#{bookID}</delete><!--更新Book--><update id="updateBook" parameterType="Books">update ssmbuild.booksset bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}where bookID = #{bookID}</update><!--根據id查詢,返回一個Book--><select id="queryBookById" resultType="Books">select * from ssmbuild.bookswhere bookID = #{bookID}</select><!--查詢全部Book--><select id="queryAllBook" resultType="Books">SELECT * from ssmbuild.books</select></mapper>

7、編寫Service層的接口和實現類
接口：

package com.kuang.service;import com.kuang.pojo.Books;import java.util.List;//BookService:底下需要去實現,調用dao層 public interface BookService {//增加一個Bookint addBook(Books book);//根據id刪除一個Bookint deleteBookById(int id);//更新Bookint updateBook(Books books);//根據id查詢,返回一個BookBooks queryBookById(int id);//查詢全部Book,返回list集合List<Books> queryAllBook(); }

實現類：

package com.kuang.service;import com.kuang.dao.BookMapper; import com.kuang.pojo.Books; import java.util.List;public class BookServiceImpl implements BookService {//調用dao層的操作，設置一個set接口，方便Spring管理private BookMapper bookMapper;public void setBookMapper(BookMapper bookMapper) {this.bookMapper = bookMapper;}public int addBook(Books book) {return bookMapper.addBook(book);}public int deleteBookById(int id) {return bookMapper.deleteBookById(id);}public int updateBook(Books books) {return bookMapper.updateBook(books);}public Books queryBookById(int id) {return bookMapper.queryBookById(id);}public List<Books> queryAllBook() {return bookMapper.queryAllBook();} }

Spring層
1、配置Spring整合MyBatis，我們這里數據源使用c3p0連接池；

2、我們去編寫Spring整合Mybatis的相關的配置文件；spring-dao.xml

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsd"><!-- 配置整合mybatis --><!-- 1.關聯數據庫文件 --><context:property-placeholder location="classpath:database.properties"/><!-- 2.數據庫連接池 --><!--數據庫連接池dbcp 半自動化操作 不能自動連接c3p0 自動化操作（自動的加載配置文件 并且設置到對象里面）--><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><!-- 配置連接池屬性 --><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連接池的私有屬性 --><property name="maxPoolSize" value="30"/><property name="minPoolSize" value="10"/><!-- 關閉連接后不自動commit --><property name="autoCommitOnClose" value="false"/><!-- 獲取連接超時時間 --><property name="checkoutTimeout" value="10000"/><!-- 當獲取連接失敗重試次數 --><property name="acquireRetryAttempts" value="2"/></bean><!-- 3.配置SqlSessionFactory對象 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 注入數據庫連接池 --><property name="dataSource" ref="dataSource"/><!-- 配置MyBaties全局配置文件:mybatis-config.xml --><property name="configLocation" value="classpath:mybatis-config.xml"/></bean><!-- 4.配置掃描Dao接口包，動態實現Dao接口注入到spring容器中 --><!--解釋 ：https://www.cnblogs.com/jpfss/p/7799806.html--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!-- 注入sqlSessionFactory --><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/><!-- 給出需要掃描Dao接口包 --><property name="basePackage" value="com.kuang.dao"/></bean></beans>

3、Spring整合service層

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!-- 掃描service相關的bean --><context:component-scan base-package="com.kuang.service" /><!--BookServiceImpl注入到IOC容器中--><bean id="BookServiceImpl" class="com.kuang.service.BookServiceImpl"><property name="bookMapper" ref="bookMapper"/></bean><!-- 配置事務管理器 --><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!-- 注入數據庫連接池 --><property name="dataSource" ref="dataSource" /></bean></beans>

SpringMVC層
1、web.xml

<?xml version="1.0" encoding="UTF-8"?> <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"><!--DispatcherServlet--><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><!--一定要注意:我們這里加載的是總的配置文件，之前被這里坑了！--> <param-value>classpath:applicationContext.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!--encodingFilter--><filter><filter-name>encodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><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><!--Session過期時間--><session-config><session-timeout>15</session-timeout></session-config></web-app>

2、spring-mvc.xml

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvchttps://www.springframework.org/schema/mvc/spring-mvc.xsd"><!-- 配置SpringMVC --><!-- 1.開啟SpringMVC注解驅動 --><mvc:annotation-driven /><!-- 2.靜態資源默認servlet配置--><mvc:default-servlet-handler/><!-- 3.配置jsp 顯示ViewResolver視圖解析器 --><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><!-- 4.掃描web相關的bean --><context:component-scan base-package="com.kuang.controller" /></beans>

3、Spring配置整合文件，applicationContext.xml

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd"><import resource="spring-dao.xml"/><import resource="spring-service.xml"/><import resource="spring-mvc.xml"/></beans>

Controller 和 視圖層編寫
1、BookController 類編寫 ，

@Controller @RequestMapping("/book") public class BookController {@Autowired@Qualifier("BookServiceImpl")private BookService bookService;@RequestMapping("/allBook")public String list(Model model) {List<Books> list = bookService.queryAllBook();model.addAttribute("list", list);return "allBook";} }

2、編寫首頁 index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %> <!DOCTYPE HTML> <html> <head><title>首頁</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">點擊進入列表頁</a> </h3> </body> </html>

3、書籍列表頁面 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>書籍列表</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>書籍列表 —— 顯示所有書籍</small></h1></div></div></div><div class="row"><div class="col-md-4 column"><a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a></div></div><div class="row clearfix"><div class="col-md-12 column"><table class="table table-hover table-striped"><thead><tr><th>書籍編號</th><th>書籍名字</th><th>書籍數量</th><th>書籍詳情</th><th>操作</th></tr></thead><tbody><c:forEach var="book" items="${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()}">刪除</a></td></tr></c:forEach></tbody></table></div></div> </div>

總結

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