spring整合SSM

spring
Author

dd21

Published

December 5, 2022

1、创建一个存放书籍数据的数据库表

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,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

2.1新建一Maven项目！ssmbuild ， 添加web的支持

2.2导入相关的pom依赖！

<dependencies>
   <!--Junit-->
   <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>5.1.47</version>
   </dependency>
   <!-- 数据库连接池 -->
   <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>
   
   <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.22</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>RELEASE</version>
            <scope>compile</scope>
        </dependency>
</dependencies>

3、Maven资源过滤设置

静态资源没有导出记得加上

<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、配置包

cn.usts.pojo

cn.usts.dao

cn.usts.service

cn.usts.controller

5、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>

</configuration>

6、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/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">

</beans>

7、数据库配置文件 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=123321

8、Books.class

package cn.usts.edu.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;
}

9、bookMapper接口

package cn.usts.edu.dao;

import cn.usts.edu.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface bookMapper {
    // 增加一本书
    int addBook(Books books);
    // 删除一本书
    int deleteBook(@Param("bookId") int id);
    // 根据id查询一本书
    Books queryBook(@Param("bookId") int id);
    // 更新一本书
    int updateBook(Books books);
    // 查询全部书
    List<Books> queryAllBooks();
}

10、bookMapper.xml

PUBLIC “-//mybatis.org//DTD mapper 3.0//EN”别写错了

<?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">
<mapper namespace="cn.usts.edu.dao.bookMapper">
    <insert id="addBook" parameterType="Books">
        insert into ssmbuild.books(bookName, bookCounts, detail)
        values(#{bookName},#{bookCounts},#{detail});
    </insert>

    <delete id="deleteBook" 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="queryBook" parameterType="Books">
        select * from ssmbuild.books
        where bookID=#{bookId};
    </select>

    <select id="queryAllBooks" parameterType="Books">
        select * from ssmbuild.books;
    </select>
</mapper>

11、绑定mapper【myBatis-config.xml】

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://www.mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <typeAliases>
        <package name="cn.usts.edu.pojo" />
    </typeAliases>

<!--    绑定mapper-->
    <mappers>
        <mapper class="cn/usts/edu/dao/bookMapper.xml"/>
    </mappers>
</configuration>

【文件结构】 在这里插入图片描述

12、编写service层

12.1 BookService接口

package cn.usts.edu.service;

import cn.usts.edu.pojo.Books;


import java.util.List;

public interface BookService {
    // 增加一本书
    int addBook(Books books);
    // 删除一本书
    int deleteBook( int id);
    // 根据id查询一本书
    Books queryBook( int id);
    // 更新一本书
    int updateBook(Books books);
    // 查询全部书
    List<Books> queryAllBooks();
}

12.2 BookServiceImp.class

package cn.usts.edu.service;

import cn.usts.edu.pojo.Books;
import cn.usts.edu.dao.bookMapper;
import java.util.List;

public class BookServiceImp implements BookService {

    // service层调用dao层
    private bookMapper bookMapper;

    public void setBookMapper(cn.usts.edu.dao.bookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    @Override
    public int addBook(Books books) {
        return bookMapper.addBook(books);
    }

    @Override
    public int deleteBook(int id) {
        return bookMapper.deleteBook(id);
    }

    @Override
    public Books queryBook(int id) {
        return bookMapper.queryBook(id);
    }

    @Override
    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    @Override
    public List<Books> queryAllBooks() {
        return bookMapper.queryAllBooks();
    }
}

13、配置Spring整合MyBatis，我们这里数据源使用c3p0连接池；

<?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">
<!--    1、关联数据库配置-->
    <context:property-placeholder location="classpath:database.properties"/>
    <!--    2、连接池
            dbcp,半自动化 不能自动连接
            c3p0,自动化操作
            druid,hikari
    -->
    <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}"/>
    </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>

<!--  配置dao接口扫描包，动态的实现了dao接口可以注入到spring容器中  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="cn.usts.edu.dao"/>
    </bean>
</beans>

14、Spring整合service层

<?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">
<!--    包扫描-->
    <context:component-scan base-package="cn.usts.edu.service"/>
<!--    将所有业务类，注入到spring，可以通过配置，或者注解实现-->
    <bean id="BookServiceImpl" class="cn.usts.edu.service.BookServiceImp">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>
    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
    </bean>
</beans>

15、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">
<!--    前端控制器-->
    <servlet>
        <servlet-name>srpingmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>srpingmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

<!--    编码过滤器-->
    <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过期时间 15min-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

16、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/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 http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--    包扫描-->
    <context:component-scan base-package="cn.usts.edu.controller"/>
<!--    注解驱动-->
    <mvc:annotation-driven/>
<!--    默认静态资源过滤-->
    <mvc:default-servlet-handler/>
<!--    视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

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


</beans>

18、 index.jsp

在这里插入代码片