SSM框架整合---完成对图书数据表的增删改查
Posted 小智RE0
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学习来源–>B站传送门–>【狂神说Java】SSM框架最新整合教学IDEA版
感谢狂神❤
ml
1.先去创建数据表
并且放入几条初始化数据
-- 创建数据库
CREATE DATABASE IF NOT EXISTS day20211018_booksms_db CHARSET utf8;
-- 创建图书表;
CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '图书Id标识',
`bookName` VARCHAR(100) NOT NULL COMMENT '图书名',
`bookCounts` INT(11) NOT NULL COMMENT '图书数量',
`detail` VARCHAR(200) NOT NULL COMMENT '图书的描述',
PRIMARY KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8
-- 存放三条初始数据
INSERT INTO `books`(`bookName`,`bookCounts`,`detail`)VALUES
('大话数据结构',1,'入门数据结构'),
('Java核心技术卷',10,'Java入门必看'),
('剑指Offer',5,'算法提升必看');
2. 创建maven普通项目,导入需要的依赖包
看下maven的地址对着没
pom.xml文件配置
<?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.xiaozhi</groupId>
<artifactId>booksms_byxiaozhire0</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!--Junit测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.22</version>
</dependency>
<!-- 数据库连接池 -->
<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.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<!--jstl标签库-->
<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>
<!--事务置入-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.4</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
</dependency>
</dependencies>
<!--资源导出问题-->
<!--在build中配置resources，来防止我们资源导出失败的问题-->
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
</project>
3.mybatis层
先在resources目录下创建数据库配置文件database.properties
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/day20211018_booksms_db?useSSL=false&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=123456
在resources目录下创建mybatis核心配置文件mybatis-config.xml
<?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>
<!--配置日志-->
<settings>
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
<!--实体层扫描-->
<typeAliases>
<package name="com.xiaozhi.entity"/>
</typeAliases>
<!--持久层扫描-->
<mappers>
<mapper class="com.xiaozhi.dao.BookMapper"/>
</mappers>
</configuration>
entity
在entity包下创建实体类Books
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
* @author by CSDN@小智RE0
* @date 2021-10-18 19:00
* 图书实体类
*/
//使用lombok的注解;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {
/**
* 图书Id;
*/
private int bookID;
/**
* 图书名;
*/
private String bookName;
/**
* 图书数量;
*/
private int bookCounts;
/**
* 图书数量;
*/
private String detail;
}
注意,需要在idea的设置插件中安装lombok插件
dao
在dao包下创建持久层接口BookMapper
package com.xiaozhi.dao;
import com.xiaozhi.entity.Books;
import org.apache.ibatis.annotations.Param;
import java.util.List;
/**
* @author by CSDN@小智RE0
* @date 2021-10-18 19:58
*/
//图书管理持久层接口
public interface BookMapper {
//查询所有的书;
List<Books> findAllBooks();
//根据ID查询图书;
Books findBookById(@Param("bookID") int id);
//添加书籍;
int addBook(Books books);
//删除书籍;
int deleteBookById(@Param("bookID") int id);
//更新图书;
int updateBook(Books books);
}
dao包下创建映射文件配置BookMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!--这里的命名空间对应持久层的接口-->
<mapper namespace="com.xiaozhi.dao.BookMapper">
<!--查询所有的图书-->
<select id="findAllBooks" resultType="Books">
select * from books
</select>
<!--根据Id查询图书-->
<select id="findBookById" resultType="Books">
select * from books where bookID=#{bookID}
</select>
<!--添加图书-->
<insert id="addBook" parameterType="Books">
insert into books(bookName,bookCounts,detail)
values (#{bookName},#{bookCounts},#{detail})
</insert>
<!--根据Id删除图书-->
<delete id="deleteBookById" parameterType="int">
delete from books where bookID=#{bookID}
</delete>
<!--更新图书-->
<update id="updateBook" parameterType="Books">
update books set bookName=#{bookName} ,bookCounts=#{bookCounts},
detail=#{detail}
where bookID=#{bookID}
</update>
</mapper>
service
在service包下创建业务层接口BookService
package com.xiaozhi.service;
import com.xiaozhi.entity.Books;
import java.util.List;
/**
* @author by CSDN@小智RE0
* @date 2021-10-18 20:58
*/
public interface BookService {
//查询所有的书;
List<Books> findAllBooks();
//根据ID查询图书;
Books findBookById(int id);
//添加书籍;
int addBook(Books books);
//删除书籍;
int deleteBookById(int id);
//更新图书;
int updateBook(Books books);
}
在service包下创建业务层接口的实现类BookServiceImpl
package com.xiaozhi.service;
import com.xiaozhi.dao.BookMapper;
import com.xiaozhi.entity.Books;
import java.util.List;
/**
* @author by CSDN@小智RE0
* @date 2021-10-18 21:02
* 业务层实现类
*/
public class BookServiceImpl implements BookService{
//调用持久层;
private BookMapper bookMapper;
public void setBookMapper(BookMapper bookMapper) {
this.bookMapper = bookMapper;
}
//查询所有图书
public List<Books> findAllBooks() {
return bookMapper.findAllBooks();
}
//根据Id查询图书;
public Books findBookById(int id) {
return bookMapper.findBookById(id);
}
//添加图书;
public int addBook(Books books) {
return bookMapper.addBook(books);
}
//根据Id删除图书;
public int deleteBookById(int id) {
return bookMapper.deleteBookById(id);
}
//更新图书;
public int updateBook(Books books) {
return bookMapper.updateBook(books);
}
}
4.spring层
在resources目录下创建spring-dao.xml
spring 整合mybatis
<?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
https://www.springframework.org/schema/context/spring-context.xsd">
</beans>
开始编写
<?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
https://www.springframework.org/schema/context/spring-context.xsd">
<!--首先关联数据配置文件-->
<!--读取到数据库配置文件database.properties-->
<context:property-placeholder location="classpath:database.properties"/>
<!--数据库连接池资源-->
<!--c3p0:自动化操作;自动加载配置文件,可自动设置到对象中-->
<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=以上是关于SSM框架整合---完成对图书数据表的增删改查的主要内容，如果未能解决你的问题，请参考以下文章