1. 数据库准备

CREATE DATABASE ssmbuild;
USE ssmbuild;
CREATE TABLE `books`(
`bookID` INT NOT NULL AUTO_INCREMENT COMMENT '书id',
`bookName` VARCHAR(100) NOT NULL COMMENT '书名',
`bookCounts` INT 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.新建maven项目

3.导入依赖

<?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.hzu</groupId>
<artifactId>ssmbuild</artifactId>
<version>1.0-SNAPSHOT</version>
<!--SSM整合导入依赖: junit,mysql,数据连接池:c3p0,servlet,jsp,mybatis,mybatis-spring,springwebmvc,spring-jdbc -->
<dependencies>
<!--junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--数据库连接池c3p0-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<!--jsp-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.5</version>
</dependency>
<!--mybatis-spring-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.5</version>
</dependency>
<!--spring-webmvc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<!--spring-jdbc-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.6</version>
</dependency>
<!--jstl-->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<!--静态资源过滤-->
<build>
<!--资源过滤，maven默认只加载resource下的配置文件-->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<!--resources也配置一下，以防读取不到-->
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>

4.mybatis整合

4.1 mybatis-config.xml(mybatis的核心配置文件)

<?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">
<!--mybatis核心配置文件-->
<configuration>
<!--数据源配置，整合后交给spring管理-->
<!--取别名-->
<typeAliases>
<!--包扫描-->
<package name="com.hzu.pojo"/>
</typeAliases>
<!--xxxMapper.xml配置文件，可以交给spring管理-->
</configuration>

4.2 pojo

package com.hzu.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data//gettter、setter，equals、hashCode、toString、无参构造
@AllArgsConstructor//有参构造
@NoArgsConstructor//无参构造
public class Books { 
private int bookID;
private String bookName;
private int bookCounts;
private String detail;
}

4.3 mapper

4.3.1 bookMapper.java

package com.hzu.mapper;
import com.hzu.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BooksMapper { 
//1.增加一本书
public int addBook(Books book);
//2.删除一本书
public int deleteBookById(@Param("bookId") int id);
//3.更新一本书
public int updateBook(Books book);
//4.查询一本书
public Books queryBookById(@Param("bookId") int id);
//5.查询所有书
public List<Books> queryAllBooks();
}

4.3.2 bookMapper.xml

<?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="com.hzu.mapper.BooksMapper">
<insert id="addBook" parameterType="Books">
insert into ssmbuild.books (bookName, bookCounts, detail)
values (#{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>
<if test="bookName!=null">
bookName=#{bookName},
</if>
<if test="bookCounts!=null">
bookCounts=#{bookCounts},
</if>
<if test="detail!=null">
detail=#{detail}
</if>
</set>
</update>
<select id="queryBookById" parameterType="_int" resultType="Books">
select * from ssmbuild.books where bookID=#{bookId}
</select>
<select id="queryAllBooks" resultType="Books">
select * from ssmbuild.books
</select>
</mapper>

5.service层构建

5.1 BookService

package com.hzu.service;
import com.hzu.pojo.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface BooksService { 
//1.增加一本书
public int addBook(Books book);
//2.删除一本书
public int deleteBookById(@Param("bookId") int id);
//3.更新一本书
public int updateBook(Books book);
//4.查询一本书
public Books queryBookById(@Param("bookId") int id);
//5.查询所有书
public List<Books> queryAllBooks();
}

5.2 BookServiceImpl

package com.hzu.service;
import com.hzu.mapper.BooksMapper;
import com.hzu.pojo.Books;
import java.util.List;
public class BooksServiceImpl implements BooksService { 
private BooksMapper booksMapper;
//set方法可以通过Spring将其注入
public void setBooksMapper(BooksMapper booksMapper) { 
this.booksMapper = booksMapper;
}
@Override
public int addBook(Books book) { 
return booksMapper.addBook(book);
}
@Override
public int deleteBookById(int id) { 
return booksMapper.deleteBookById(id);
}
@Override
public int updateBook(Books book) { 
return booksMapper.updateBook(book);
}
@Override
public Books queryBookById(int id) { 
return booksMapper.queryBookById(id);
}
@Override
public List<Books> queryAllBooks() { 
return booksMapper.queryAllBooks();
}
}

6. spring整合mybatis

6.1 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/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!--1. 关联数据库配置文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 2.连接池 dbcp:半自动化，不能自动连接 c3p0:自动化操作（自动化的加载配置文件，并且可以自动化的设置到对象中！） druid: -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<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"/>
<!--获取连接失败后的重连次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!--3.sqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--绑定Mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--4.配置dao的接口扫描，动态实现了Dao接口注入到Spring容器中-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--注入sqlSessionFactory-->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!--扫描的dao接口-->
<property name="basePackage" value="com.hzu.mapper"/>
</bean>
</beans>

6.2 db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
jdbc.username=root
jdbc.password=123456

6.3 spring-service

<?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 https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<!--1. 扫描该报下的所有组件注解-->
<context:component-scan base-package="com.hzu.service"/>
<!--2. 将我们所有的业务类，注入到spring中，可以通过注解，也可以通过配置-->
<bean id="BooksServiceImpl" class="com.hzu.service.BooksServiceImpl">
<property name="booksMapper" ref="booksMapper"/>
</bean>
<!--3.声明式事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--4.aop事务支持！-->
</beans>

7.springmvc整合

7.1 web.xml配置

<?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:前端控制器-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<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>
<!--乱码过滤-->
<!--springmvc的过滤器-->
<filter>
<filter-name>encoding</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>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

7.2 spring-mvc.xml配置

<?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 https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--1.注解驱动的处理器映射器和处理器适配器-->
<mvc:annotation-driven/>
<!--2.静态资源过滤-->
<mvc:default-servlet-handler/>
<!--3.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>
<!--4.组件扫描-->
<context:component-scan base-package="com.hzu.controller"/>
</beans>

7.3 applicationContext.xml配置文件

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

7.4 BookController

package com.hzu.controller;
import com.hzu.pojo.Books;
import com.hzu.service.BooksService;
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调用service
@Autowired
@Qualifier("BooksServiceImpl")
private BooksService booksService;
@RequestMapping("/allBook")
public String queryAllBooks(Model model){ 
List<Books> books = booksService.queryAllBooks();
model.addAttribute("books",books);
return "allBook";
}
}

8 测试

8.1 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>首页</title>
<style> a{  text-decoration: none; color: black; font-size: 20px; } h3{  width: 180px; height: 50px; margin: 100px auto;/*设置外边距 auto居中显示*/ text-align: center;/*文本居中*/ line-height: 50px;/*行高跟字体一样就居中*/ background-color: deepskyblue; border-radius: 5px; } </style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
</h3>
</body>
</html>

8.2 addBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>查询所有书籍</title>
<%--bootStrap美化页面--%>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"></head>
<body>
<div class="bs-example" data-example-id="panel-without-body-with-table">
<div class="panel panel-default">
<div class="panel-heading">书籍展示</div>
<!-- Table -->
<table class="table">
<thead>
<tr>
<th>编号</th>
<th>书名</th>
<th>数量</th>
<th>描述</th>
</tr>
</thead>
<tbody>
<c:forEach var="book" items="${books}">
<tr>
<td>${book.bookID}</td>
<td>${book.bookName}</td>
<td>${book.bookCounts}</td>
<td>${book.detail}</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</body>
</html>

8. 3 结果展示

8.4 目录结构

本文地址：https://blog.csdn.net/weixin_42291877/article/details/110918194