一:配置MVC
1、思考需要的技术
2、创建项目:运行HelloWorld(排除环境问题)
3、添加依赖
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<!--Spring版本-->
<spring.version>5.2.4.RELEASE</spring.version>
</properties>
<!--导入SpringMVC-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--JDBC驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!--Spring对JDBC的支持-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<!--数据源-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.4</version>
</dependency>
<!--spring对Mybatis的支持-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.4</version>
</dependency>
<!--spring单元测试-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!--自动GetSet生成-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
4、检查依赖
5、配置SpringMVC
(1)配置视图转发器 中文乱码处理
<!--配置视图转发器-->
<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>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--配置Spring中文乱码处理-->
<filter>
<filter-name>Ecoding</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>Ecoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
(2)SpringMVC配置文件的编写
(2.1)包扫描
(2.2)配置MVC驱动
<!--配置包扫描-->
<context:component-scan base-package="cn.gok.controllers"/>
<!--配置MVC驱动-->
<mvc:annotation-driven/>
(2.3)配置视图解析器
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
(2.4)异常处理
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<!--设置默认异常-->
<property name="defaultErrorView" value="erros/default"/>
<!--异常映射:不同的异常跳转到不同的界面-->
<property name="exceptionMappings">
<props>
<prop key="java.io.IOException">erros/IOException</prop>
<prop key="java.lang.NullPointerException">erros/NullPoint</prop>
</props>
</property>
</bean>
(2.5)文件上传
<!--配置文件上传-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!--设置编码-->
<property name="defaultEncoding" value="utf-8"/>
<!--上传的大小-->
<property name="maxUploadSize" value="1048576"/>
</bean>
(2.6)数据校验
<!--配置数据校验-->
<bean class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" id="validatorFactoryBean">
<property name="providerClass" value="org.hibernate.validator.HibernateValidator"/>
</bean>
<!--加载数据校验驱动-->
<mvc:annotation-driven validator="validatorFactoryBean"/>
6、写一个测试Controller:(排除MVC的问题)
二:配置数据库相关操作
7、配置数据库相关操作
(1)配置数据源:(配置完成检查是否能连接诶数据库)
<!--加载数据库配置文件-->
<util:properties id="db" location="classpath:DB.properties"/>
<!--配置数据源:c3p0-->
<bean id="c3p0" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="#{db.user}"/>
<property name="password" value="#{db.psw}"/>
<property name="jdbcUrl" value="#{db.url}"/>
<property name="driverClass" value="#{db.driver}"/>
</bean>
driver=com.mysql.cj.jdbc.Driver
user=root
psw=123456
url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
(2)配置数据库操作模板:JDBCTemplate、Mybatis
<!--配置Mybatis工厂-->
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--数据源-->
<property name="dataSource" ref="c3p0"/>
<!--数据库语句配置文件-->
<property name="mapperLocations" value="classpath:mappers/*.xml"/>
<!--加载Mybatis配置文件-->
<property name="configLocation" value="classpath:MybatisConfig.xml"/>
</bean>
<!--配置Mybatis模板-->
<bean id="sessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg ref="sessionFactory"/>
</bean>
<!--Mybatis接口扫描-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="cn.gok.daos"/>
</bean>
8、在MVC文件里面引入数据源相关配置
在application配置包扫描
<!--配置包扫描-->
<context:component-scan base-package="cn.gok.services"/>
<context:component-scan base-package="cn.gok.daos"/>
SpringMVC引入
<!--引入另外一个配置文件-->
<import resource="classpath:Application.xml"/>