環境:eclipse 、Tomcat8.5、Maven3.6
1.新建maven項目
2.項目建立後上面有紅叉
解決辦法:
右鍵項目-->build path-- >configure and build-->在libraries那一欄下,選擇ADD Libarry-->選擇server Runtime-->選擇tomcat然後finish-->apply然後關閉
3.pom.xml文件添加依賴
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>wust</groupId>
<artifactId>SSM</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>SSM Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- spring依賴 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<!-- spring數據庫事務處理 tomcat8.5居然不支持5.0.2.RELEASE事務 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>
<!-- Spring對JDBC數據訪問 同樣tomcat8.5居然不支持5.0.2.RELEASE -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>
<!-- springmvc依賴 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- json依賴 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.3</version>
</dependency>
<!-- mybatis依賴 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<!-- mybatis-spring依賴 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- mysql驅動依賴 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.45</version>
</dependency>
<!-- JDBC連接池依賴 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
</dependencies>
<build>
<finalName>SSM</finalName>
</build>
</project>
4.SSM配置:4個配置文件
web.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<!-- 加載spring容器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-config.xml</param-value>
</context-param>
<!-- 加載spring mvc -->
<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:spring/springmvc-config.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
spring-config.xml配置
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:aop="http://www.springframework.org/schema/aop"
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
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<!-- 配置數據源(spring接管了mybatis的配置) --> <!-- c3p0連接池 -->
<bean id="dataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource"> <!-- jdbc:mysql://localhost:3306/testdb --> <!-- 本地數據庫可以省略localhost:3306 -->
<property name="jdbcUrl" value="jdbc:mysql:///testdb"></property>
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="user" value="root"></property>
<property name="password" value="123456"></property>
<!-- 當連接池中的連接耗盡的時候c3p0一次同時獲取的連接數,Default: 3 -->
<property name="acquireIncrement" value="3"></property> <!-- 初始化時獲取連接數,取值應在minPoolSize與maxPoolSize之間。Default: 3 -->
<property name="initialPoolSize" value="10"></property>
<property name="minPoolSize" value="2"></property>
<property name="maxPoolSize" value="10"></property>
</bean>
<!-- sqlSessionFactory配置 (回憶一下mybatis編程,現在由spring注入) -->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入數據庫連接池 -->
<property name="dataSource" ref="dataSource" /> <!-- 加載mybatis-config配置 -->
<property name="configLocation"
value="classpath:mybatis/mybatis-config.xml"></property>
</bean>
<!-- 配置mybatis mapper批量掃描 --> <!-- 從basePackage指定的mapper包中掃描mapper類,自動生成bean -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName"
value="sqlSessionFactory" />
<property name="basePackage" value="mapper" />
</bean>
<!-- 事務配置(spring接管mybatis事務操作,如事務的提交、回滾、關閉等) -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 使用annotation註解方式配置事務 -->
<tx:annotation-driven
transaction-manager="transactionManager" />
<!-- 自動掃描配置 --> <!-- 在base-package包中掃描@Service、@Component註解的類, 並把這些類自動註冊爲bean 備註:@Controller放到spring
mvc掃描 -->
<context:component-scan base-package="service" />
<context:component-scan base-package="entity" />
</beans>
springmvc-config.xml配置
<?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:p="http://www.springframework.org/schema/p"
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
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 啓用註解映射+json轉換器 -->
<mvc:annotation-driven>
<mvc:message-converters>
<bean
class="org.springframework.http.converter.StringHttpMessageConverter" />
<bean
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" />
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 自動掃描 --> <!-- spring mvc自動掃描base-pack下或子包下的@Controller註解的類,自動註冊爲bean 注:@Service、@Component一般放到spring配置文件中去掃描 -->
<context:component-scan
base-package="controller" />
<!-- 視圖解析路徑配置 依賴jstl包 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="contentType" value="text/html" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 配置靜態資源(JS、CSS、圖片等)的訪問路徑 --> <!--對location文件夾下內容的訪問將不再被DispatcherServlet攔截 -->
<mvc:resources mapping="/gif/**" location="/gif/" />
<mvc:resources mapping="/jquery/**" location="/jquery/" />
</beans>
mybatis-config.xml配置
<?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>
<!-- 原先的配置基本都被spring接管 AOP厲害呀-->
<!-- 別名配置 把entity包中簡單類起個別名(如User類的別名就是user) --> <typeAliases> <package name="entity"/> </typeAliases>
</configuration>
5.將項目添加到tomcat運行沒報錯就是成功了