Sprin6 MVC 第三章 SSM 配置

1. 依赖

  <dependencies><!--springmvc--><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>6.2.0</version></dependency><!--spring jdbc--><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>6.2.0</version></dependency><!--mybatis--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.17</version></dependency><!--mybatis spring--><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>3.0.4</version></dependency><!--mysql驱动--><dependency><groupId>com.mysql</groupId><artifactId>mysql-connector-j</artifactId><version>8.4.0</version></dependency><!--德鲁伊连接池--><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.24</version></dependency><!--jackson--><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.18.1</version></dependency><!--servlet api--><dependency><groupId>jakarta.servlet</groupId><artifactId>jakarta.servlet-api</artifactId><version>6.0.0</version><scope>provided</scope></dependency><!--logback--><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.5.12</version></dependency><!--thymeleaf和spring6的整合依赖--><dependency><groupId>org.thymeleaf</groupId><artifactId>thymeleaf-spring6</artifactId><version>3.1.2.RELEASE</version></dependency></dependencies>

2. 目录结构

在这里插入图片描述

3. Mybatis

1. 数据库源文件

jdbc.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybait?useUnicode=true&serverTimezone\=Asia\/Shanghai&useSSL=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=1234

2. 配置数据源

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;import javax.sql.DataSource;
// 读数据源的配置文件
@PropertySource("classpath:jdbc.properties") 
// 数据源的配置文件
public class DataSourceConfig {@Value("${jdbc.driver}")private String driver;@Value("${jdbc.url}")private String url;@Value("${jdbc.username}")private String username;@Value("${jdbc.password}")private String password;@Beanpublic DataSource dataSource(){// 使用德鲁伊连接池DruidDataSource dataSource = new DruidDataSource();dataSource.setDriverClassName(driver);dataSource.setUrl(url);dataSource.setUsername(username);dataSource.setPassword(password);return dataSource;}//  事务管理对象@Beanpublic PlatformTransactionManager platformTransactionManager(DataSource dataSource){DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();dataSourceTransactionManager.setDataSource(dataSource);return dataSourceTransactionManager;}
}

<!--  数据源--><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean>

3. Mybatis配置

import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;
import javax.sql.DataSource;
import org.springframework.transaction.annotation.EnableTransactionManagement;// 开启事务
@EnableTransactionManagement
public class MyBatisConfig {@Beanpublic SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource){SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();// 数据源，dataSource自动获取上面类中的德鲁伊连接池数据源sqlSessionFactoryBean.setDataSource(dataSource);//  注册实体类的别名sqlSessionFactoryBean.setTypeAliasesPackage("org.example.ssm.bean");return sqlSessionFactoryBean;}@Beanpublic MapperScannerConfigurer mapperScannerConfigurer(){MapperScannerConfigurer msc = new MapperScannerConfigurer();// mappermsc.setBasePackage("org.example.ssm.dao");return msc;}
}

<!--  配置maybatis相关--><bean class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/><property name="typeAliasesPackage" value="com.example.bank.pojo"/></bean><!--Mapper 映射 --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.example.bank.mapper"/></bean>

4. Spring MVC

import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.config.annotation.*;
import org.thymeleaf.spring6.SpringTemplateEngine;
import org.thymeleaf.spring6.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.spring6.view.ThymeleafViewResolver;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.ITemplateResolver;import java.util.List;@Configuration
// 扫描controller也就是handle文件夹，纳入spring管理
@ComponentScan("org.example.ssm.handler")
@EnableWebMvc
public class SpringMvcConfig implements WebMvcConfigurer {// 以下三个方法合并起来就是开启视图解析器@Beanpublic ThymeleafViewResolver getViewResolver(SpringTemplateEngine springTemplateEngine) {ThymeleafViewResolver resolver = new ThymeleafViewResolver();resolver.setTemplateEngine(springTemplateEngine);resolver.setCharacterEncoding("UTF-8");resolver.setOrder(1);return resolver;}@Beanpublic SpringTemplateEngine templateEngine(ITemplateResolver iTemplateResolver) {SpringTemplateEngine templateEngine = new SpringTemplateEngine();templateEngine.setTemplateResolver(iTemplateResolver);return templateEngine;}@Beanpublic ITemplateResolver templateResolver(ApplicationContext applicationContext) {SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();resolver.setApplicationContext(applicationContext);resolver.setPrefix("/WEB-INF/thymeleaf/");resolver.setSuffix(".html");resolver.setTemplateMode(TemplateMode.HTML);resolver.setCharacterEncoding("UTF-8");resolver.setCacheable(false);//开发时关闭缓存，改动即可生效return resolver;}// 开启静态资源处理，开启默认的Servlet处理@Overridepublic void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {configurer.enable();}// 视图控制器@Overridepublic void addViewControllers(ViewControllerRegistry registry) {}// 配置异常处理器@Overridepublic void configureHandlerExceptionResolvers(List<HandlerExceptionResolver> resolvers) {}// 配置拦截器@Overridepublic void addInterceptors(InterceptorRegistry registry) {}
}

 <!--  扫描--><context:component-scan base-package="org.example.springmvc"/><!--视图解析器--><bean id="thymeleafViewResolver" class="org.thymeleaf.spring6.view.ThymeleafViewResolver"><!--作用于视图渲染的过程中，可以设置视图渲染后输出时采用的编码字符集--><property name="characterEncoding" value="UTF-8"/><!--如果配置多个视图解析器，它来决定优先使用哪个视图解析器，它的值越小优先级越高--><property name="order" value="1"/><!--当 ThymeleafViewResolver 渲染模板时，会使用该模板引擎来解析、编译和渲染模板--><property name="templateEngine"><bean class="org.thymeleaf.spring6.SpringTemplateEngine"><!--用于指定 Thymeleaf 模板引擎使用的模板解析器。模板解析器负责根据模板位置、模板资源名称、文件编码等信息，加载模板并对其进行解析--><property name="templateResolver"><bean class="org.thymeleaf.spring6.templateresolver.SpringResourceTemplateResolver"><!--设置模板文件的位置（前缀）--><property name="prefix" value="/WEB-INF/templates/"/><!--设置模板文件后缀（后缀），Thymeleaf文件扩展名不一定是html，也可以是其他，例如txt，大部分都是html--><property name="suffix" value=".html"/><!--设置模板类型，例如：HTML,TEXT,JAVASCRIPT,CSS等--><property name="templateMode" value="HTML"/><!--用于模板文件在读取和解析过程中采用的编码字符集--><property name="characterEncoding" value="UTF-8"/></bean></property></bean></property></bean><bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"><property name="exceptionMappings"><props><!--用来指定出现异常后，跳转的视图--><prop key="java.lang.Exception">tip</prop></props></property><!--将异常信息存储到request域，value属性用来指定存储时的key。--><property name="exceptionAttribute" value="e"/></bean>
<!--  默认sevlet提供的静态资源管理器 --><mvc:default-servlet-handler/>
<!--  注解驱动器 --><mvc:annotation-driven/>
<!--  视图控制器--><mvc:view-controller path="/" view-name="index"/>
<!--  配置拦截器，可配置多个拦截器，每个拦截器的路径可单独设置 --><mvc:interceptors>
<!--    拦截器的执行顺序就时按照配置的顺序执行 --><mvc:interceptor><!--  拦截路径 --><mvc:mapping path="/"/><!--除 /test 路径之外--><mvc:exclude-mapping path="/test"/><bean class="org.example.springmvc.Interceptors.Interceptor1"/></mvc:interceptor><mvc:interceptor><mvc:mapping path="/"/><!-- 第二种引入方式：使用ref引入需要两个条件①需要拦截器纳入spring管理，在类上加 @Component注解②包扫描范围中--><ref bean="interceptor2"/></mvc:interceptor><mvc:interceptor><mvc:mapping path="/"/><bean class="org.example.springmvc.Interceptors.Interceptor3"/></mvc:interceptor></mvc:interceptors>
</beans>

5. web.xml

import jakarta.servlet.Filter;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {/*** Spring的配置* @return*/@Overrideprotected Class<?>[] getRootConfigClasses() {return new Class[]{SpringConfig.class};}/*** SpringMVC的配置* @return*/@Overrideprotected Class<?>[] getServletConfigClasses() {return new Class[]{SpringMvcConfig.class};}/*** 用来配置DispatcherServlet的 <url-pattern>* @return*/@Overrideprotected String[] getServletMappings() {return new String[]{"/"};}/*** 配置过滤器* @return*/@Overrideprotected Filter[] getServletFilters() {// 配置字符编码过滤器CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();characterEncodingFilter.setEncoding("UTF-8");characterEncodingFilter.setForceResponseEncoding(true);characterEncodingFilter.setForceRequestEncoding(true);// 配置HiddenHttpMethodFilterHiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();return new Filter[]{characterEncodingFilter, hiddenHttpMethodFilter};}
}

  <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:springmvc.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>springmvc</servlet-name><url-pattern>/</url-pattern></servlet-mapping>

6. Spring

@Configuration
@ComponentScan({"org.example.ssm.service"}) // 扫描service包，纳入spring管理
@Import({DataSourceConfig.class, MyBatisConfig.class})  // 引入其他配置类
public class SpringConfig {
}