一、导入相关依赖
pom.xml配置文件：
- 打包方式：war
<?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.haojin.ssm</groupId> <artifactId>ssm</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> <spring.version>5.3.1</spring.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <!--springmvc--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- Mybatis核心 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.7</version> </dependency> <!--mybatis和spring的整合包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.6</version> </dependency> <!-- 连接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.9</version> </dependency> <!-- junit测试 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <!-- MySQL驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.31</version> </dependency> <!-- log4j日志 --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper --> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>5.2.0</version> </dependency> <!-- 日志 --> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-classic</artifactId> <version>1.2.3</version> </dependency> <!-- ServletAPI --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.12.1</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <!-- Spring5和Thymeleaf整合包 --> <dependency> <groupId>org.thymeleaf</groupId> <artifactId>thymeleaf-spring5</artifactId> <version>3.0.12.RELEASE</version> </dependency> </dependencies> </project>
二、配置web.xml文件
- web.xml文件所在目录：
*\src\main\webapp\WEB-INF\web.xml
配置目录：
1.spring的编码过滤器；
2.处理请求方式的过滤器；
3.SpringMVC的前端控制器DispatcherServlet；
4.自定义springmvc配置文件的名称与位置；
5.将DispatcherServlet的初始化时间提前到服务器启动前；
6.spring监听器，在服务器启动时加载spring的配置文件；
7.自定义spring配置文件的名称与位置；
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"> <!--配置spring的编码过滤器--> <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <!--配置encoding，设置请求的编码为utf-8--> <param-name>encoding</param-name> <param-value>utf-8</param-value> </init-param> <init-param> <!--forceEncoding设置为true，使得响应的编码也能配置--> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--配置处理请求方式的过滤器--> <filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--配置SpringMVC的前端控制器DispatcherServlet--> <servlet> <servlet-name>SpringMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--设置springmvc配置文件自定义的位置和名称--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!--将DispatcherServlet的初始化时间提前到服务器启动前--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--配置spring监听器，在服务器启动时加载spring的配置文件--> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--配置spring配置文件自定义的位置和名称--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </context-param> </web-app>
三、SpringMVC配置文件
- SpringMVC配置文件的位置：Maven工程下的resources目录
SpringMVC配置文件：springmvc.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"> <!--配置扫描控制层的组件--> <context:component-scan base-package="com.haojin.ssm.controller"/> <!--配置Thymeleaf的视图解析器--> <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver"> <property name="order" value="1"/> <property name="characterEncoding" value="UTF-8"/> <property name="templateEngine"> <bean class="org.thymeleaf.spring5.SpringTemplateEngine"> <property name="templateResolver"> <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver"> <!-- 视图前缀 --> <property name="prefix" value="/WEB-INF/templates/"/> <!-- 视图后缀 --> <property name="suffix" value=".html"/> <property name="templateMode" value="HTML5"/> <property name="characterEncoding" value="UTF-8" /> </bean> </property> </bean> </property> </bean> <!--配置默认的servlet处理静态资源--> <mvc:default-servlet-handler /> <!--开启mvc框架的注解驱动--> <mvc:annotation-driven /> <!--配置视图控制器--> <mvc:view-controller path="/" view-name="index"></mvc:view-controller> <!--配置文件上传解析器--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/> </beans>
- 配置文件中配置了扫描的包：
com.haojin.ssm.controller
- 配置文件中视图控制器所配置的视图：
index.html
四、搭建MyBatis环境
⚪属性文件jdbc.properties
属性文件jdbc.properties中存放的是用于连接数据库的相关属性：
jdbc.username=root jdbc.password=abc123 jdbc.url=jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC jdbc.driver=com.mysql.cj.jdbc.Driver
⚪MyBatis核心配置文件
- MyBatis的核心配置文件通常命名为：
mybatis-config.xml:
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "https://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!--引入外部文件：jdbc.properties--> <properties resource="jdbc.properties"/> <!--设置mybatis全局配置--> <settings> <!-- mapUnderscoreToCamelCase(默认为false) 下划线自动映射为驼峰 —— t_emp映射为tEmp --> <setting name="mapUnderscoreToCamelCase" value="true"/> <!--lazyLoadingEnabled：开启延迟加载--> <setting name="lazyLoadingEnabled" value="true"/> <!----> </settings> <!--设置类型别名--> <typeAliases> <package name="com.haojin.mybatis.pojo"/> </typeAliases> <plugins> <!--配置分页插件--> <plugin interceptor="com.github.pagehelper.PageInterceptor" ></plugin> </plugins> <!--配置连接数据库的相关环境--> <environments default="development"> <environment id="development"> <transactionManager type="JDBC"/> <dataSource type="POOLED"> <property name="driver" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> </dataSource> </environment> </environments> <!--配置映射文件--> <mappers> <package name="com.haojin.mybatis.mapper"/> </mappers> </configuration>
⚪创建Mapper接口 + Mapper映射文件
注意：
- 映射文件的属性 namespace 要和mapper接口的 全类名 保持一致
- 映射文件中，SQL语句的 id 与mapper接口中的 方法名 保持一致
Mapper接口 EmployeeMapper:
/** * @author .29. * @create 2023-03-15 15:49 */ public interface EmployeeMapper { List<Employee> getEmployeeList(); }
Mapper映射文件 EmployeeMapper.xml：
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "https://mybatis.org/dtd/mybatis-3-mapper.dtd"> <!--namespace属性与mapper接口全类名保持一致--> <mapper namespace="com.haojin.ssm.mapper.EmployeeMapper"> <!--SQL语句的id与mapper接口中的方法名保持一致--> <!--查询功能的标签，必须设置 resultType 或 resultMap - resultType： 设置默认的映射关系 - resultMap： 设置自定义的映射关系--> <!--List<Employee> getEmployeeList();--> <select id="getEmployeeList" resultType="Employee"> select * from t_emp; </select> </mapper>
⚪日志文件log4j.xml
在导入依赖时，我们导入了Log4j日志框架，所以需要配置其核心配置文件：log4j.xml。
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"> <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender"> <param name="Encoding" value="UTF-8"/> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m (%F:%L) \n"/> </layout> </appender> <logger name="java.sql"> <level value="debug"/> </logger> <logger name="org.apache.ibatis"> <level value="info"/> </logger> <root> <level value="debug"/> <appender-ref ref="STDOUT"/> </root> </log4j:configuration>
五、Spring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" xmlns:tx="http://www.springframework.org/schema/tx" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!--扫描组件（除去控制层）--> <context:component-scan base-package="com.haojin.ssm"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--引入外部配置文件jdbc.properties--> <context:property-placeholder location="classpath:jdbc.properties"/> <!--配置数据源--> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> <property name="driverClassName" value="${jdbc.driver}"></property> </bean> <!--配置事务管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!--引用数据源--> <property name="dataSource" ref="dataSource"></property> </bean> <!--开启事务注解驱动:将使用@Transactional表示的方法或类中的所有方法进行事务管理--> <tx:annotation-driven transaction-manager="transactionManager"/> <!--配置SqlSessionFactoryBean,可以直接从Spring的IOC容器中获取SqlSessionFactory对象--> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!--配置MyBatis核心配置文件的路径--> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <!--设置数据源，这里通过spring设置，mybatis-config.xml中的相关配置可删除--> <property name="dataSource" ref="dataSource"></property> <!--设置类型别名类似的包--> <property name="typeAliasesPackage" value="com.haojin.ssm.pojo"></property> <!--设置映射文件路径，只有映射文件的包和mapper接口的包不一致时需要设置--> <!--<property name="mapperLocations" value="classpath:mappers/*.xml"></property>--> </bean> <!--配置mapper接口扫描，通过SqlSession创建基础包中所有mapper接口的代理实现类对象并交给IOC管理--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--设置基础包--> <property name="basePackage" value="com.haojin.ssm.mapper"></property> </bean> </beans>
