SSM框架的搭建（idea）

首先建立項目：

一路下一步即可

導入依賴（context,mysql,mybatis,druid）

<dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.3.8</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>5.3.8</version></dependency><!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.7</version></dependency><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.25</version></dependency><!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --><!-- <dependency>--><!-- <groupId>mysql</groupId>--><!-- <artifactId>mysql-connector-java</artifactId>--><!-- <version>5.1.49</version>--><!-- </dependency>--><!-- https://mvnrepository.com/artifact/com.alibaba/druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.6</version></dependency>

設置三個.xml文件
第一個：config-spring.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"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"><context:component-scan base-package="com.example"></context:component-scan> </beans>

第二個：config-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"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"><!--配置springmvc框架的注解的掃描范圍，在加載時需要掃描的注解范圍擴展：springboot是通過 main方法所在類確定掃描范圍；main方法所在包及其子包作為spring的掃描范圍--><context:component-scan base-package="com.example"></context:component-scan><!-- springmvc框架的內部資源視圖解析器，完成向view層頁面的轉發和解析處理 --><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/><property name="prefix" value="/WEB-INF/logined/"/><property name="suffix" value=".jsp"/></bean></beans>

第三個：db.properties

driverClassName=com.mysql.cj.jdbc.Driver useUnicode=true&characterEncoding=utf8 url=jdbc:mysql://localhost:3306/practical_training?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=Hongkong&allowPublicKeyRetrieval=true username=root password=123456 initialSize=2 maxActive=20 minIdle=0 maxWait=60000 validationQuery=SELECT 1 FROM DUAL testOnBorrow=false testOnReturn=false testWhileIdle=true timeBetweenEvictionRunsMillis=60000 minEvictableIdleTimeMillis=25200000 removeAbandoned=true removeAbandonedTimeout=1800 logAbandoned=true filters=mergeStat

最重要的配置web.xml文件

<?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"><!--============================spring容器加載器的上下文監聽器加載spring初始配置文件=====================================--><!-- web容器啟動時讀取的初始化參數--><context-param><!-- 參數的名字是固定的，是給web容器加載的spring的監聽器的類使用的--><param-name>contextConfigLocation</param-name><!-- 參數的值：用于指明spring配置文件的路徑地址--><param-value>classpath:config-spring.xml</param-value></context-param><!-- 這里的配置就是spring框架在tomcat等web容器開始的入口，等價于從main方法的調用--><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!--============================springmvc核心轉發控制器的初始配置文件=====================================--><!-- 這里的配置就是springmvc框架在tomcat等web容器開始的入口，等價于從main方法的調用--><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:config-springmvc.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><!-- 映射路徑是 web項目的根目錄，表示所有的請求全部由DispatcherServlet進行轉發處理--><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!-- 亂碼 過濾器--><!-- 配置一個filter，用于設置request和response編碼--><!--=================配置springmvc框架的編碼過濾器，解決中文傳輸亂碼的問題========================--><filter><filter-name>CharsetEncodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><!--初始化參數，設置CharacterEncodingFilter類在創建時的初始化參數的值--><init-param><param-name>encoding</param-name><param-value>utf-8</param-value></init-param></filter><!--filter的映射路徑--><filter-mapping><filter-name>CharsetEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>

詳見代碼參考搭建gitee地址:

gitee倉庫

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