第一次的ssm整合

数据库表

 

 导入依赖

<dependencies>        <dependency>            <groupId>javax.servlet</groupId>            <artifactId>javax.servlet-api</artifactId>            <version>4.0.1</version>            <scope>provided</scope>        </dependency>        <dependency>            <groupId>org.junit.jupiter</groupId>            <artifactId>junit-jupiter-api</artifactId>            <version>${junit.version}</version>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.junit.jupiter</groupId>            <artifactId>junit-jupiter-engine</artifactId>            <version>${junit.version}</version>            <scope>test</scope>        </dependency>        <!--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>        <!--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>        <!-- https://mvnrepository.com/artifact/log4j/log4j -->        <dependency>            <groupId>log4j</groupId>            <artifactId>log4j</artifactId>            <version>1.2.17</version>        </dependency>        <dependency>            <groupId>org.projectlombok</groupId>            <artifactId>lombok</artifactId>            <version>1.18.4</version>            <scope>provided</scope>        </dependency>        <!--        事务支持-->        <!--spring事务-->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-tx</artifactId>            <version>5.2.5.RELEASE</version>        </dependency>        <dependency>            <groupId>org.aspectj</groupId>            <artifactId>aspectjweaver</artifactId>            <version>1.8.13</version>        </dependency>        <!--        使用forEach标签-->        <dependency>            <groupId>org.apache.taglibs</groupId>            <artifactId>taglibs-standard-spec</artifactId>            <version>1.2.5</version>        </dependency>        <dependency>            <groupId>com.github.demidenko05</groupId>            <artifactId>taglibs-standard-impl</artifactId>            <version>1.0.5</version>        </dependency>    </dependencies>

编写mybatis-config.xml配置文件，这里已经绑定了SQL的映射文件，所以在spring的配置中就不要再次引入mapperLocations

<?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>    <typeAliases>        <!--        配置别名，配置之后返回类型就不用写全路径了-->        <package name="com.smu.pojo"/>    </typeAliases>    <mappers>      <!--加载sql映射文件--><!--        <mapper resource="com/smu/mapper/BooksMapper.xml"/>-->        <!--Mapper代理方式-->        <package name="com.smu.mapper"/>    </mappers></configuration>

写jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver#????MySQL8.0+,???????????; &serverTimezone=Asia/Shanghai#jdbc.url=jdbc:mysql://localhost:3306/testProject?useSSL=true&useUnicode=true&characterEncoding=utf8jdbc.url=jdbc:mysql://localhost:3306/testproject?useSSL=falsejdbc.username=rootjdbc.password=889886hp

spring整合mybatis

编写spring-dao.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"       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">    <!--    DataSource:使用Spring的数据源替换MyBatis的配置 c3p0/dbcp/druid-->    <!--    1.关联数据库配置文件-->    <context:property-placeholder location="classpath:jdbc.properties"/>    <!--    2.连接池            dbcp:半自动化操作,不能自动连接            c3p0: 自动化操作(自动化的加载配置文件,并且可以自动设置到对象中!)            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}"/>        <!-- c3p0连接池的私有属性    可默认不使用-->        <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="10"/>    </bean>    <!--    3.配置sqlSessionFactory对象-->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!--  注入数据库连接池  -->        <property name="dataSource" ref="dataSource"/>        <!--       绑定MyBatis的全局配置文件 -->        <property name="configLocation" value="classpath:mybatis-config.xml"/><!--        <property name="mapperLocations" value="classpath:com/smu/mapper/BooksMapper.xml"/>-->    </bean>    <!--    使用继承SqlSessionDaoSupport的方式-->    <bean id="booksMapperImpl" class="com.smu.mapper.BooksMapperImpl">        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>    </bean>    <!-- 4. 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 id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <!--        注入sqlSessionFactory-->        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>        <!--        给出需要扫描的Dao接口包  -->        <property name="basePackage" value="com.smu.mapper"/>    </bean></beans>

编写spring-service.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"
       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">
    <!-- 用于扫描注解 -->
    <!--    <context:component-scan base-package="com.smu.service"/>-->
    <!--    使用扫描接口的方式注册bean-->
    <bean id="booksServiceImpl" >
        <property name="booksMapper" ref="booksMapper"/>
    </bean>
    <bean id="usersServiceImpl" >
        <property name="usersMapper" ref="usersMapper"/>
    </bean>
</beans>

配置总的applicationContext.xml文件用于整合，引入的springmvc是表现层的，下面配

<?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="spring-service.xml"/>    <import resource="springmvc.xml"/></beans>

sql映射文件需要和mapper接口同一个目录

 

 service层写一个业务需要的接口，然后写一个实现类，实现类注入mapper接口

public class BooksServiceImpl implements BooksService{    private BooksMapper booksMapper;    public void setBooksMapper(BooksMapper booksMapper) {        this.booksMapper = booksMapper;    }    @Override    public List<Books> selectAll() {        return booksMapper.selectAll();    }    public Books selectById(int id) {        return booksMapper.selectById(id);    }    @Override    public int add(Books books) {        return booksMapper.add(books);    }    @Override    public int deleteById(int id) {        return booksMapper.deleteById(id);    }    @Override    public int update(Books books) {        return booksMapper.update(books);    }    @Override    public List<Books> selectByName(String bookName) {        return booksMapper.selectByName(bookName);    }}

此类已经在spring-service.xml中注册过bean，代码如下

<bean id="booksServiceImpl" class="com.smu.service.BooksServiceImpl">        <property name="booksMapper" ref="booksMapper"/>    </bean>    <bean id="usersServiceImpl" class="com.smu.service.UsersServiceImpl">        <property name="usersMapper" ref="usersMapper"/>    </bean>

写一个util包，将获得bean的操作简化

public class BooksServiceUtil {    public static BooksServiceImpl getBooksServiceBean(){        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");        return context.getBean("booksServiceImpl", BooksServiceImpl.class);    }}   

spring整合springMVC

在web.xml下部署dispatchSerclet

<?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">    <!--    <display-name>springMVC</display-name>-->    <!-- 部署 DispatcherServlet -->    <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>        <!-- 表示容器再启动时立即加载servlet -->        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <!-- 处理所有URL -->        <url-pattern>/</url-pattern>    </servlet-mapping>    <!--    解决编码问题-->    <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>

编写springmvc.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"       xmlns:nvc="http://www.springframework.org/schema/mvc"       xmlns:mvc="http://www.springframework.org/schema/mvc"       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/mvc       http://www.springframework.org/schema/mvc/spring-mvc.xsd       http://www.springframework.org/schema/context       https://www.springframework.org/schema/context/spring-context.xsd">    <!--  配置SpringMVC  -->    <!--    1.开启SpringMVC注解驱动 -->    <nvc:annotation-driven/>    <!--    2.静态资源过滤默认servlet配置 -->    <mvc:default-servlet-handler/>    <!--    3.扫描相关的controller-->    <context:component-scan base-package="com.smu.controller"/>    <!--    处理器映射器-->    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>    <!--    处理器适配器-->    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>    <!--    视图解析器 以后可能会用到的模板引擎Thymeleaf Freemarker-->    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <!--        前缀-->        <property name="prefix" value="/WEB-INF/jsp/"/>        <!--        后缀-->        <property name="suffix" value=".jsp"/>    </bean>        <!--    拦截器配置-->        <mvc:interceptors>            <mvc:interceptor>                <mvc:mapping path="/book/**"/>                <bean class="com.smu.interceptor.LoginInterceptor"/>            </mvc:interceptor>        </mvc:interceptors>        <!--    文件上传支持-->    <!--    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">-->    <!--        &lt;!&ndash;        请求表单的格式，需要和jsp的pageEncoding一样，默认为ISO-8859-1&ndash;&gt;-->    <!--        <property name="defaultEncoding" value="utf-8"/>-->    <!--        &lt;!&ndash;        上传文件的大小上限，单位为字节10485760=10m&ndash;&gt;-->    <!--        <property name="maxUploadSize" value="10485760"/>-->    <!--        <property name="maxInMemorySize" value="40960"/>-->    <!--    </bean>--></beans>

controller层的部分代码截图