第一次的ssm整合
2024-08-25 05:47:24
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=utf8
jdbc.url=jdbc:mysql://localhost:3306/testproject?useSSL=false
jdbc.username=root
jdbc.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" 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>
</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">-->
<!-- <!– 请求表单的格式，需要和jsp的pageEncoding一样，默认为ISO-8859-1–>-->
<!-- <property name="defaultEncoding" value="utf-8"/>-->
<!-- <!– 上传文件的大小上限，单位为字节10485760=10m–>-->
<!-- <property name="maxUploadSize" value="10485760"/>-->
<!-- <property name="maxInMemorySize" value="40960"/>-->
<!-- </bean>-->
</beans>
controller层的部分代码截图
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