依赖传递
只添加了一个struts2-core依赖，发现项目中出现了很多jar，这种情况 叫 依赖传递
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依赖版本冲突的解决
1、 第一声明优先原则
<dependencies><!-- spring-beans-4.2.4 --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.2.4.RELEASE</version></dependency><!-- spring-beans-3.0.5 --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-spring-plugin</artifactId><version>2.3.24</version></dependency>
2、 路径近者优先原则
自己添加jar包(自己明确的添加Jar包)
<dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>4.2.4.RELEASE</version></dependency>
3、 排除原则
<dependency><groupId>org.apache.struts</groupId><artifactId>struts2-spring-plugin</artifactId><version>2.3.24</version><exclusions><exclusion><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId></exclusion></exclusions></dependency>
4、 版本锁定原则
<properties><spring.version>4.2.4.RELEASE</spring.version><hibernate.version>5.0.7.Final</hibernate.version><struts.version>2.3.24</struts.version></properties><!-- 锁定版本，struts2-2.3.24、spring4.2.4、hibernate5.0.7 --><dependencyManagement><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency> </dependencies> </dependencyManagement>
-----------------------Maven中整合Spring3.0+Struts2.3+Mybatis3.2-------------------------------------
工程结构:
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>MavenDemo</groupId><artifactId>MavenDemo</artifactId><version>0.0.1-SNAPSHOT</version><packaging>war</packaging><name /><description />
<!-- 声明变量，下面用类似于el表达式提取 --><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><struts.version>2.3.24.1</struts.version><struts.javassist.version>3.12.1.GA</struts.javassist.version><spring.version>3.0.5.RELEASE</spring.version><mybatis.version>3.2.2</mybatis.version><mybatis.spring.version>1.2.1</mybatis.spring.version><mysql.version>5.1.37</mysql.version><slf4j.version>1.7.5</slf4j.version><aspectj.version>1.6.10</aspectj.version></properties><dependencies><!-- struts2 依赖包 --><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-core</artifactId><version>${struts.version}</version></dependency><dependency><groupId>javassist</groupId><artifactId>javassist</artifactId><version>${struts.javassist.version}</version></dependency><dependency><groupId>org.apache.struts</groupId><artifactId>struts2-spring-plugin</artifactId><version>${struts.version}</version></dependency><!-- spring 依赖包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${spring.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${spring.version}</version></dependency><!-- mybatis 依赖包 --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>${mybatis.version}</version></dependency><dependency><groupId>cglib</groupId><artifactId>cglib</artifactId><version>2.2.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>${mybatis.spring.version}</version></dependency><!-- myql 依赖包 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><!-- aspectj 依赖包 --><dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>${aspectj.version}</version></dependency><!-- <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>${aspectj.version}</version> </dependency> --><!-- slf4j 依赖包 --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>${slf4j.version}</version></dependency><!-- 测试 --><!-- <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> </dependency> --><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.9</version></dependency><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jsp-api</artifactId><version>2.0</version><scope>provided</scope></dependency><!-- 数据库连接池 --><dependency><groupId>c3p0</groupId><artifactId>c3p0</artifactId><version>0.9.1.2</version></dependency><!-- 调试过程中自己加的包依赖包 --><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-api</artifactId><version>2.0-rc1</version></dependency><dependency><groupId>org.apache.logging.log4j</groupId><artifactId>log4j-core</artifactId><version>2.0-rc1</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.7</version></dependency></dependencies><build><!-- 配置了很多插件 --><plugins><!-- 编译插件 --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.5.1</version><configuration><source>1.7</source><target>1.7</target><encoding>UTF-8</encoding></configuration></plugin><!-- tomcat插件 --><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration><port>80</port><path>/SSM</path></configuration></plugin></plugins></build> </project>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"id="WebApp_ID" version="3.0"><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list><servlet><description></description><display-name>Hello</display-name><servlet-name>ServletTest</servlet-name><servlet-class>cn.qlq.Servlet.ServletTest</servlet-class></servlet><servlet-mapping><servlet-name>ServletTest</servlet-name><url-pattern>/ServletTest</url-pattern></servlet-mapping><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext-*.xml</param-value></context-param><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class></filter><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>
applicationContext-action.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" 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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "><!--4.注解扫描Action --><!-- 4.开启组件自动扫描，也就是启用注解。前提是导入spring-context-3.2.xsd约束和引入新的命名空间，注解扫描service出错了 --><context:component-scan base-package="cn.qlq.Action"></context:component-scan></beans>
applicationContext-service.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context"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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "><!--4.注解扫描service --><!-- 4.开启组件自动扫描，也就是启用注解。前提是导入spring-context-3.2.xsd约束和引入新的命名空间，注解扫描service出错了 --><context:component-scan base-package="cn.qlq.service"></context:component-scan></beans>
applicationContext-dao.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" 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-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "><!-- 0.连接池属性设置读取指定的properties文件 --><context:property-placeholder location="classpath:db.properties" /> <!-- 1.将连接池放入spring容器 --><bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="jdbcUrl" value="${jdbc.url}"></property><property name="driverClass" value="${jdbc.driver}"></property><property name="user" value="${jdbc.username}"></property><property name="password" value="${jdbc.password}"></property></bean><!--2. 配置 Mybatis的会话工厂 --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><!-- 数据源 --><property name="dataSource" ref="dataSource" /><!-- 配置Mybatis的核心 配置文件所在位置 --><property name="configLocation" value="classpath:sqlMapConfig.xml" /></bean><!-- 3.1 mapper代理配置方法一 这种方法需要大量重复的配置代理对象MapperFactoryBean:根绝mapper接口生成代理对象<bean id="selectUser" class="org.mybatis.spring.mapper.MapperFactoryBean"><property name="mapperInterface" value="cn.qlq.core.dao.SelectUser"></property><property name="sqlSessionFactory" ref="sqlSessionFactory"></property></bean>--><!-- 3.2通过MapperScannerConfigurer扫描进行批量生成代理对象 遵循规范:mapper.java和mapper.xml名字一样且在同一个目录下自动扫描出来的代理对象的id为mapper类类名（首字母小写） --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!-- 指定扫描的包名，如果有多个，用半角逗号分隔 --><property name="basePackage" value="cn.qlq.mapper"></property><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property></bean><!-- 4.配置事务管理器 --><!-- 事务核心管理器，封装了事务操作，依赖于连接池 --><bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource"></property></bean><!-- 5.开启注解管理aop事务 --><tx:annotation-driven/><!-- 事务模板对象，依赖于事务核心管理器 --><bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate"><property name="transactionManager" ref="transactionManager"></property></bean> <!-- ················开始使用XML管理事务························ --> <!-- 配置事务通知（无论哪种方式都要用到事务的核心管理器）--><tx:advice transaction-manager="transactionManager" id="firstTx"><tx:attributes><!--以方法为单位，指定方法应用事务什么属性isolation:隔离级别read-only:只读属性propagation:传播行为--><!-- 企业中运用通配符命名规则。两套增删改查(8种) --><tx:method name="save*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="persist*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="delete*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="remove*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="update*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="modify*" isolation="DEFAULT" read-only="false" propagation="REQUIRED"/><tx:method name="get*" isolation="DEFAULT" read-only="true" propagation="REQUIRED"/><tx:method name="find*" isolation="DEFAULT" read-only="true" propagation="REQUIRED"/></tx:attributes></tx:advice><!-- 配置织入 --><aop:config><!-- 配置切点表达式 --><aop:pointcut expression="execution(* cn.qlq.Service.*ServiceImpl.*(..))" id="texPc"/><!-- 配置切面:切点+通知advice-ref：通知名称pointcut-ref：切点名称--><aop:advisor advice-ref="firstTx" pointcut-ref="texPc"/></aop:config> </beans>
SqlMapConfig.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><!-- 只需要定义个别名,这个应该有--><typeAliases ><package name="cn.xm.bean"/></typeAliases> <!-- 动态代理也不需要配置这个扫描，留着也行 --><mappers><!-- 原始DAO开发使用这个手动加载xml --><package name="cn.xm.mapper"/> </mappers></configuration>
struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd"><struts><constant name="struts.custom.i18n.resources" value="errors"></constant><!--struts.objectFactory = spring :将Struts创建对象工厂改为Springstruts.objectFactory.spring.autoWire = name spring自动装配Struts的依赖属性(默认开启)--><constant name="struts.objectFactory" value="spring"></constant><!-- 第一个package命名空间 --><package name="user" namespace="/" extends="struts-default"><!-- class是spring扫描出来的名字 --><action name="user_*" class="userAction" method="{1}"><result name="add">/index.jsp</result> <result name="delete">/index.jsp</result> <result name="update">/index.jsp</result> <result name="find">/index.jsp</result> </action></package> </struts>
db.properties
;;;;;;;;;;;;;;;;;;;;
;DataBaseConnection;
;;;;;;;;;;;;;;;;;;;;jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/maven
jdbc.username=sa
jdbc.password=123456
测试源码及配置下载地址
https://github.com/qiao-zhi/Maven_SSM.git
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