文章目录
- 🎉SSM整合流程
- 一、两个容器整合✨
- 1、先准备好数据库config.properties连接、mybatis-config.xml🎊
- 2、容器一:优先配置spring.xml文件🎊
- 3、容器二:配置springMVC.xml文件🎊
- 4、Tomcat整合spring容器、springMVC容器,webapp文件下的web.xml文件🎊
- 二、一个容器整合
- 1、 现在去掉了spring.xml文件,将spring.xml文件的内容放到springMVC🎊
- 2、Tomcat整合springMVC容器,webapp文件下的web.xml文件🎊
🎉SSM整合流程
分为两种:两个容器整合
一个容器整合
本项目的路径参考:
注意:优先maven项目的pom.xml文件里导入jar包依赖:
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<aaa>4.3.8.RELEASE</aaa>
</properties>
<dependencies>
<dependency>
<groupId>com.auth0</groupId>
<artifactId>java-jwt</artifactId>
<exclusions>
<exclusion>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</exclusion>
</exclusions>
<version>3.19.2</version>
</dependency>
<dependency>
<groupId>org.dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>2.0.0</version>
<type>pom</type><!--依赖的类型,声明引入的依赖的类型,值一般有jar、war、pom-->
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- spring的webmvc的依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${aaa}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${aaa}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${aaa}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<!-- Mysql的依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.28</version>
</dependency>
<!-- mybatis的依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.6</version>
</dependency>
<!--数据库连接池的依赖 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- spring-mybatis的依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
<!-- springjdbc的依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.8.RELEASE</version>
</dependency>
<!-- aspectj的依赖 -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.4</version>
</dependency>
<!-- 添加日志log4j的依赖 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<!-- jackson的依赖 -->
<!-- <dependency>-->
<!-- <groupId>com.fasterxml.jackson.core</groupId>-->
<!-- <artifactId>jackson-databind</artifactId>-->
<!-- <version>2.9.7</version>-->
<!-- </dependency>-->
<!-- 依赖 -->
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>8.0.28</version>
<scope>provided</scope><!-- 生命周期:test -->
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<!-- json依赖 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.71</version>
</dependency>
<!--导入lombok依赖 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.8</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.jdom/jdom2 -->
<dependency>
<groupId>org.jdom</groupId>
<artifactId>jdom2</artifactId>
<version>2.0.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.71</version>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>RELEASE</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.4</version>
</dependency>
<!-- redis客户端jar -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.7.3</version>
</dependency>
<!-- spring-redis实现 -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.7.2.RELEASE</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.11.2</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<version>0.11.2</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<version>0.11.2</version>
</dependency>
</dependencies>
一、两个容器整合✨
1、先准备好数据库config.properties连接、mybatis-config.xml🎊
(1)数据库config.properties连接
driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/emp?serverTimeZone=Asia/ShangHai&useUnicode=true&characterEncoding=utf8&useSSL=false
username=root
password=nigx=0128
(2)mybatis-config.xml
<?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>
<!-- <properties resource="config.properties"> -->
<!-- </properties> -->
<settings>
<!--将表中字段的下划线自动转换为驼峰-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<setting name="logImpl" value="STDOUT_LOGGING"/>
<!-- 如果需要更改一级缓存的范围,可以在Mybatis的配置文件中,在下通过localCacheScope指定。 -->
<!-- <setting name="localCacheScope" value="STATEMENT"/> -->
</settings>
<!-- 类型别名
配置各个标签时,需要遵守前后顺序-->
<typeAliases>
<package name="com.pojo"/>
</typeAliases>
<!-- <typeAliases>-->
<!-- <typeAlias alias="user" type="com.pojo.User"></typeAlias>-->
<!-- <typeAlias type="com.pojo.Employee"></typeAlias>-->
<!-- <typeAlias type="com.pojo.Log"></typeAlias>-->
<!-- <typeAlias type="com.pojo.Dept"></typeAlias>-->
<!-- </typeAliases>-->
<!-- environments:配置数据库的连接环境信息,可以配置多个environment,通过default属性切换不同的environment -->
<!-- <environments default="development"> -->
<!-- <environment id="development"> -->
<!-- <transactionManager type="JDBC"/> -->
<!-- <!–数据库连接池–> -->
<!-- <dataSource type="POOLED"> -->
<!-- <!–数据库的连接信息–> -->
<!-- <property name="driver" value="${driver}"/> -->
<!-- <property name="url" value="${url}"/> -->
<!-- <property name="username" value="${username}"/> -->
<!-- <property name="password" value="${password}"/> -->
<!-- </dataSource> -->
<!-- </environment> -->
<!-- </environments> -->
<mappers>
<!--加载SQL映射文件-->
<!--<mapper resource="nigaoxian\mapper\UserMapper.xml"/>-->
<!-- Mapper 代理方式,在spring容器映射过就不需要配置了-->
<!-- <package name="com.dao"/> -->
</mappers>
</configuration>
2、容器一:优先配置spring.xml文件🎊
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 2*3+1 -->
<!--扫描组件(除控制层)-->
<context:component-scan base-package="com.service,com.service.serviceImpl,com.interceptor,com.exception">
<!-- 按照注解进行排除,标注了指定注解的组件不要扫描 -->
<!-- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>-->
<!-- 指定排除某个具体的类,按照类排除 -->
<!-- <context:exclude-filter type="assignable" expression="com.controller.EmpController"/> -->
</context:component-scan>
<!-- 配置数据源 -->
<!--引入config.properties-->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config.properties</value>
</list>
</property>
</bean>
<!-- 配置数据参数与连接属性 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${driver}"></property>
<property name="maxPoolSize" value="100"></property>
<property name="minPoolSize" value="30"></property>
<property name="jdbcUrl" value="${url}"></property>
<property name="user" value="${username}"></property>
<property name="password" value="${password}"></property>
</bean>
<!-- 配置spring事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--
开启事务的注解驱动,
将使用注解 @Transactional 标识的方法或类中所有的方法进行事务关联
-->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- 配置SqlSessionFactoryBean,可以直接在Spring的IOC中获取SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 设置MyBatis的核心配置文件的路径 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- 设置数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- 设置类型别名,默认为类名 -->
<!-- <property name="typeAliasesPackage" value="com.pojo"/> -->
<!-- 设置映射文件所在的包,只有在映射文件的包和mapper接口的包不一致时需要设置 -->
<property name="mapperLocations" value="classpath:com/dao/*.xml"/>
<!--引入分页插件-->
<!-- <property name="plugins"> -->
<!-- <array> -->
<!-- <bean class="com.github.pagehelper.PageInterceptor"/> -->
<!-- </array> -->
<!-- </property> -->
</bean>
<!--
配置mapper接口的扫描配置,由mybatis-spring提供,可以将指定包下所有的mapper接口创建动态代理,
并将这些动态代理作为IOC容器的bean管理,可以直接在Spring的IOC中获取Mapper接口了。
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.dao"/>
</bean>
</beans>
3、容器二:配置springMVC.xml文件🎊
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 启动mvc注解驱动 -->
<mvc:annotation-driven/>
<!-- 配置扫描的包 -->
<context:component-scan base-package="com.controller"/>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:cors>
<mvc:mapping path="/**" allowed-origins="*" allowed-headers="*" allowed-methods="*" allow-credentials="false"
max-age="3600"/>
</mvc:cors>
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean id="corsInterceptor" class="com.interceptor.CORSInterceptor"/>
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/login"/>
<mvc:exclude-mapping path="/register"/>
<bean id="loginInterceptor" class="com.interceptor.LoginInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
4、Tomcat整合spring容器、springMVC容器,webapp文件下的web.xml文件🎊
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<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">
<!-- tomcat整合spring -->
<!--配置Spring的编码过滤器-->
<!--配置Spring的监听器,在服务器启动的时候加载Spring的配置文件 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--设置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>
<!-- <filter> -->
<!-- <filter-name>CharacterEncodingFilter</filter-name> -->
<!-- <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> -->
<!-- <!–只设置这个只会处理请求的编码,两个都设置请求响应都会处理–> -->
<!-- <init-param> -->
<!-- <param-name>encoding</param-name> -->
<!-- <param-value>UTF-8</param-value> -->
<!-- </init-param> -->
<!-- <init-param> -->
<!-- <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PUT和DELETE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> -->
<!-- tomcat整合spring -->
<!-- 配置SpringMVC的前端控制器 -->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 设置SpringMVC的配置文件的位置和名称 -->
<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时-->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 为什么使用/,并且这里为什么会默认放行jsp?
设置/是为了兜底的,因为只有一个servlet,就是默认为DispatcherServlet的servlet,需要使用这个servlet拦截
请求。因为jsp底层本身就是servlet,设置多个servlet此时只映射的是DispatcherServlet
-->
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
二、一个容器整合
1、 现在去掉了spring.xml文件,将spring.xml文件的内容放到springMVC🎊
springMVC.xml文件如下:
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 2*3+1 -->
<!--扫描组件(除控制层)-->
<context:component-scan base-package="com.service,com.service.serviceImpl,com.interceptor,com.exception">
<!-- 按照注解进行排除,标注了指定注解的组件不要扫描 -->
<!-- <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>-->
<!-- 指定排除某个具体的类,按照类排除 -->
<!-- <context:exclude-filter type="assignable" expression="com.controller.EmpController"/> -->
</context:component-scan>
<!-- 配置数据源 -->
<!--引入config.properties-->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config.properties</value>
</list>
</property>
</bean>
<!-- 配置数据参数与连接属性 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${driver}"></property>
<property name="maxPoolSize" value="100"></property>
<property name="minPoolSize" value="30"></property>
<property name="jdbcUrl" value="${url}"></property>
<property name="user" value="${username}"></property>
<property name="password" value="${password}"></property>
</bean>
<!-- 配置spring事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--
开启事务的注解驱动,
将使用注解 @Transactional 标识的方法或类中所有的方法进行事务关联
-->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!-- 配置SqlSessionFactoryBean,可以直接在Spring的IOC中获取SqlSessionFactory-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 设置MyBatis的核心配置文件的路径 -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- 设置数据源 -->
<property name="dataSource" ref="dataSource"/>
<!-- 设置类型别名,默认为类名 -->
<!-- <property name="typeAliasesPackage" value="com.pojo"/> -->
<!-- 设置映射文件所在的包,只有在映射文件的包和mapper接口的包不一致时需要设置 -->
<property name="mapperLocations" value="classpath:com/dao/*.xml"/>
<!--引入分页插件-->
<!-- <property name="plugins"> -->
<!-- <array> -->
<!-- <bean class="com.github.pagehelper.PageInterceptor"/> -->
<!-- </array> -->
<!-- </property> -->
</bean>
<!--
配置mapper接口的扫描配置,由mybatis-spring提供,可以将指定包下所有的mapper接口创建动态代理,
并将这些动态代理作为IOC容器的bean管理,可以直接在Spring的IOC中获取Mapper接口了。
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.dao"/>
</bean>
<!-- 启动mvc注解驱动 -->
<mvc:annotation-driven/>
<!-- 配置扫描的包 -->
<context:component-scan base-package="com.controller"/>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:cors>
<mvc:mapping path="/**" allowed-origins="*" allowed-headers="*" allowed-methods="*" allow-credentials="false"
max-age="3600"/>
</mvc:cors>
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean id="corsInterceptor" class="com.interceptor.CORSInterceptor"/>
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/login"/>
<mvc:exclude-mapping path="/register"/>
<bean id="loginInterceptor" class="com.interceptor.LoginInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
2、Tomcat整合springMVC容器,webapp文件下的web.xml文件🎊
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<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">
<!-- tomcat整合springMVC -->
<!-- 配置SpringMVC的前端控制器 -->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 设置SpringMVC的配置文件的位置和名称 -->
<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时-->
<load-on-startup>1</load-on-startup>
</servlet>
<!-- 为什么使用/,并且这里为什么会默认放行jsp?
设置/是为了兜底的,因为只有一个servlet,就是默认为DispatcherServlet的servlet,需要使用这个servlet拦截
请求。因为jsp底层本身就是servlet,设置多个servlet此时只映射的是DispatcherServlet
-->
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>