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(1)容器管理对象,由DispatcherServlet管理
(2)Spring容器对象,由ContextLoaderListener管理
2、解决组件扫描的冲突问题
(1)SpringMVC只扫描Controller层
(2)Spring扫描排除Controller层
2、Spring+Mybatis
(1)关于数据源、事务管理的代码冲突问题
同意交给Spring管理
(2)Spring管理Mybatis核心对象
①SqlSessionFactory
②Mapper代理对象
二、SSM整合步骤
1、Spring + SpringMVC
(1)导入jar包
!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --
dependency
groupId org.springframework /groupId
artifactId spring-webmvc /artifactId
version 5.3.1 /version
/dependency
!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring5 --
dependency
groupId org.thymeleaf /groupId
artifactId thymeleaf-spring5 /artifactId
version 3.0.12.RELEASE /version
/dependency
!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --
dependency
groupId javax.servlet /groupId
artifactId javax.servlet-api /artifactId
version 4.0.1 /version
scope provided /scope
/dependency
(2)配置文件
①web.xml
a.注册CharacterEncodingFilter,解决请求乱码问题
b.注册HiddenHttpMethodFilter,支持PUT DELETE提交【REST风格】
c.注册DispatcherServlet(前端控制器),管理springMVC容器对象
d.注册一个上下文参数(contextConfigLocation),设置spring.xml配置文件路径
e.注册ContextLoaderListener,管理spring容器对象(目的是为了加载spring的配置文件,帮我们初始化IOC容器)
?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"
!-- d.注册一个上下文参数(contextConfigLocation),设置spring.xml配置文件路径--
context-param
param-name contextConfigLocation /param-name
param-value classpath:spring.xml /param-value
/context-param
!-- e.注册ContextLoaderListener,管理spring容器对象--
listener
listener-class org.springframework.web.context.ContextLoaderListener /listener-class
/listener
!-- a.注册CharacterEncodingFilter,解决请求乱码问题--
filter
filter-name CharacterEncodingFilter /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
init-param
param-name forceRequestEncoding /param-name
param-value true /param-value
/init-param
/filter
filter-mapping
filter-name CharacterEncodingFilter /filter-name
url-pattern /* /url-pattern
/filter-mapping
!-- b.注册HiddenHttpMethodFilter,支持PUT DELETE提交【REST风格】--
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
!-- c.注册DispatcherServlet(前端控制器),管理springMVC容器对象--
servlet
servlet-name DispatcherServlet /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 DispatcherServlet /servlet-name
url-pattern / /url-pattern
/servlet-mapping
/web-app
②springMVC.xml
a.开启组件扫描(只扫描Controller)
b.装配视图解析器
c.装配视图控制器(view-controller)
d.装配"default-servlet-handler",解决静态资源加载问题
e.装配"annotation-driven",解决后续问题
解决view-controller问题、解决default-servlet-handler问题、解决Jackon配置消息转换器问题
?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"
!-- a.开启组件扫描(只扫描Controller)--
context:component-scan base-package="com.hh" use-default-filters="false"
context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/
/context:component-scan
!-- b.装配视图解析器--
bean
property name="characterEncoding" value="UTF-8" /property
property name="templateEngine"
bean
property name="templateResolver"
bean
property name="characterEncoding" value="UTF-8" /property
property name="prefix" value="WEB-INF/pages/" /property
property name="suffix" value=".html" /property
/bean
/property
/bean
/property
/bean
!-- c.装配视图控制器(view-controller)--
mvc:view-controller path="/" view-name="index" /mvc:view-controller
!-- d.装配"default-servlet-handler",解决静态资源加载问题--
mvc:default-servlet-handler /mvc:default-servlet-handler
!-- e.装配"annotation-driven",解决后续问题--
mvc:annotation-driven /mvc:annotation-driven
/beans
③spring.xml
开启组件扫描(排除Controller层)
?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"
!-- 开启组件扫描--
context:component-scan base-package="com.hh"
context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/
/context:component-scan
/beans
2、Spring+Mybatis
(1)导入jar包
①spring的jar包
!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --
dependency
groupId org.springframework /groupId
artifactId spring-jdbc /artifactId
version 5.3.10 /version
/dependency
!-- https://mvnrepository.com/artifact/org.springframework/spring-orm --
dependency
groupId org.springframework /groupId
artifactId spring-orm /artifactId
version 5.3.10 /version
/dependency
!-- https://mvnrepository.com/artifact/org.springframework/spring-context --
dependency
groupId org.springframework /groupId
artifactId spring-aspects /artifactId
version 5.3.10 /version
/dependency
②mybatis的jar包
!-- https://mvnrepository.com/artifact/com.alibaba/druid --
dependency
groupId com.alibaba /groupId
artifactId druid /artifactId
version 1.1.10 /version
/dependency
!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --
dependency
groupId mysql /groupId
artifactId mysql-connector-java /artifactId
version 8.0.26 /version
/dependency
!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --
dependency
groupId org.mybatis /groupId
artifactId mybatis /artifactId
version 3.5.6 /version
/dependency
!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper --
dependency
groupId com.github.pagehelper /groupId
artifactId pagehelper /artifactId
version 5.0.0 /version
/dependency
③spring与mybatis整合jar包
dependency
groupId org.mybatis /groupId
artifactId mybatis-spring /artifactId
version 2.0.6 /version
/dependency
(2)配置文件
①spring.xml
a.开启组件扫描(排除Controller层)
b.加载外部属性文件
c.装配数据源(DruidDataSource)
d.装配事务管理器(DataSourceTransactionManager)
e.开启声明式事务管理注解支持
f.装配SqlSessionFactoryBean,管理SqlSessionFactory
g.装配MapperScannerConfigurer,管理Mapper代理对象
?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"
xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
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 http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring.xsd"
!-- a.开启组件扫描(排除Controller层)--
context:component-scan base-package="com.hh"
context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/
/context:component-scan
!-- b.加载外部属性文件--
context:property-placeholder location="classpath:db.properties" /context:property-placeholder
!-- c.装配数据源(DruidDataSource)--
bean id="dataSource"
property name="driverClassName" value="${db.driverClassName}" /property
property name="url" value="${db.url}" /property
property name="username" value="${db.username}" /property
property name="password" value="${db.password}" /property
/bean
!-- d.装配事务管理器(DataSourceTransactionManager)--
bean id="transactionManager"
property name="dataSource" ref="dataSource" /property
/bean
!-- e.开启声明式事务管理注解支持--
tx:annotation-driven transaction-manager="transactionManager" /tx:annotation-driven
!-- f.装配SqlSessionFactoryBean,管理SqlSessionFactory--
bean id="sqlSessionFactoryBean"
!-- 设置数据源--
property name="dataSource" ref="dataSource" /property
!-- 设置mybatis-config.xml核心配置文件路径--
property name="configLocation" value="classpath:mybatis-config.xml" /property
!-- 设置类型别名--
property name="typeAliasesPackage" value="com.hh.pojo" /property !-- 设置映射文件路径-- property name="mapperLocations" value="classpath:/mapper/*.xml" /property /bean !-- g.装配MapperScannerConfigurer,管理Mapper代理对象-- mybatis-spring:scan base-package="com.hh.mapper" /mybatis-spring:scan /beans
②springmvc.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"
!-- a.开启组件扫描(只扫描Controller)--
context:component-scan base-package="com.hh" use-default-filters="false"
context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/
/context:component-scan
!-- b.装配视图解析器--
bean
property name="characterEncoding" value="UTF-8" /property
property name="templateEngine"
bean
property name="templateResolver"
bean
property name="characterEncoding" value="UTF-8" /property
property name="prefix" value="WEB-INF/pages/" /property
property name="suffix" value=".html" /property
/bean
/property
/bean
/property
/bean
!-- c.装配视图控制器(view-controller)--
mvc:view-controller path="/" view-name="index" /mvc:view-controller
!-- d.装配"default-servlet-handler",解决静态资源加载问题--
mvc:default-servlet-handler /mvc:default-servlet-handler
!-- e.装配"annotation-driven",解决后续问题--
mvc:annotation-driven /mvc:annotation-driven
/beans
③mybatis-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
settings
!-- 开启自动驼峰式命名映射--
setting name="mapUnderscoreToCamelCase" value="true"/
!-- 开启延迟加载--
setting name="lazyLoadingEnabled" value="true"/
!-- 延迟加载的属性--
setting name="aggressiveLazyLoading" value="false"/
!-- 开启二级缓存--
setting name="cacheEnabled" value="true"/
/settings
!-- 添加分页插件--
plugins
plugin interceptor="com.github.pagehelper.PageInterceptor" /plugin
/plugins
/configuration
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