目前项目大都开始采用SSM结构进行搭建，因为涉及项目比较多，新来的需求都是从现有项目中迁移一份出来进行修改，有的时候两个项目差别还是比较大，并不完全需要原有项目的东西，进行删减也是一项费神费时的事情，这里拉一个简单的demo，后续新的需求直接改用该项目。
具体如下几个步骤，搭建一个简单的基于maven的SSM Demo
1、创建maven项目
而后按照next下一步设置相关的目录等，搭建完的初始项目结构如下图所示：
2、增加java、resources等目录
增加test、java、resources目录，并设置成对应的资源文件，操作如下图：
3、修改pom文件，引入spring、mybatis等jar文件
这里根据以往项目的需求，引入了常用的jar，具体如下：
<?xml version="1.0" encoding="UTF-8"?> <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>com.module</groupId> <artifactId>com.module</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>com.module Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> <!-- spring版本号 --> <spring.version>4.3.12.RELEASE</spring.version> <!-- mybatis版本号 --> <mybatis.version>3.2.6</mybatis.version> <!-- log4j日志文件管理包版本 --> <slf4j.version>1.7.7</slf4j.version> <log4j.version>1.2.17</log4j.version> </properties> <dependencies> <!-- 单元测试 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <!-- 表示开发的时候引入，发布的时候不会加载此包 --> <scope>test</scope> </dependency> <!-- spring核心包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!-- mybatis核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${mybatis.version}</version> </dependency> <!-- mybatis/spring包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!-- 导入java ee jar 包 --> <dependency> <groupId>javax</groupId> <artifactId>javaee-api</artifactId> <version>7.0</version> </dependency> <!-- 导入Mysql数据库链接jar包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.30</version> </dependency> <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-dbcp2</artifactId> <version>2.1.1</version> </dependency> <!-- JSTL标签类 --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- 日志文件管理包 --> <!-- log start --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <!-- 格式化对象，方便输出日志 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.23</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${slf4j.version}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>${slf4j.version}</version> </dependency> <!-- log end --> <!-- 映入JSON --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.5.3</version> </dependency> <!-- 上传组件包 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.9</version> </dependency> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.9.3</version> </dependency> <!-- Gson json解析 --> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.8.0</version> </dependency> <dependency> <groupId>org.jsoup</groupId> <artifactId>jsoup</artifactId> <version>1.10.2</version> </dependency> <!-- kaptcha图形验证码 --> <dependency> <groupId>com.github.penggle</groupId> <artifactId>kaptcha</artifactId> <version>2.3.2</version> </dependency> <!-- httpclient 网络工具 --> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.2</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpcore</artifactId> <version>4.4.5</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpmime</artifactId> <version>4.5.2</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient-cache</artifactId> <version>4.5.2</version> </dependency> </dependencies> <build> <finalName>com.module</finalName> <!-- 添加配置能够将sources root下的xml文件注入 --> <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> </resources> </build> </project>
4、添加日志文件、jdbc、spring-mvc.xml及spring-mybatis.xml等文件
log4j.properties文件内容为：
#日志输出级别，控制台，debug文件，error文件
log4j.rootLogger = info,stdout,D,E
#定义日志输出目的地为控制台
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
#可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [%c] - %m%n
#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
#指定输出目录 到tomcat/logs下
log4j.appender.D.File = ../logs/webtest-debug.log
#定义文件最大大小
log4j.appender.D.MaxFileSize = 10MB
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
#指定输出目录 到tomcat/logs下
log4j.appender.E.File = ../logs/webtest-error.log
#定义文件最大大小
log4j.appender.E.MaxFileSize = 10MB
log4j.appender.E.Append = true
log4j.appender.E.Threshold = ERROR
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n
log4j.logger.org.springframework=ERROR
#显示SQL语句部分
#log4j.logger.com.mybatis=DEBUG
#log4j.logger.com.mybatis.common.jdbc.SimpleDataSource=DEBUG
#log4j.logger.com.mybatis.common.jdbc.ScriptRunner=DEBUG
#log4j.logger.com.mybatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG,stdout
log4j.logger.java.sql.Statement=DEBUG,stdout
log4j.logger.java.sql.PreparedStatement=DEBUG,stdout
jdbc.properties文件内容为：
driver=com.mysql.jdbc.Driver #开发环境库 url-test=jdbc:mysql://IP（替换成数据库ip地址）:3306/test?useUnicode=true&characterEncoding=utf8&autoReconnect=true username-test=root password-test=pass123 #定义初始连接数 initialSize=0 #定义最大连接数 maxTotal=20 #定义最大空闲 maxIdle=20 #定义最小空闲 minIdle=1 #定义最长等待时间 maxWaitMillis=60000 #空闲回收期运行周期（60秒） timeBetweenEvictionRunsMillis=60000
spring-mvc.xml文件内容为
<?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-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 --> <context:component-scan base-package="com.zhouyh.controller" /> <context:component-scan base-package="com.zhouyh.service" /> <!--避免IE执行AJAX时，返回JSON出现下载文件 --> <bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> </list> </property> </bean> <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJackson2HttpMessageConverter" /> <!-- JSON转换器 --> </list> </property> </bean> <!-- Configures the @Controller programming model --> <mvc:annotation-driven /> <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources/ directory --> <!-- 放置静态文件，不做处理的，可以直接访问，即浏览器输入地址就可以直接访问 --> <mvc:resources mapping="/resources/**" location="/resources/" /> <!-- 定义跳转的文件的前后缀 ，视图模式配置 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 --> <!-- 在webapp下有一个放置页面的文件夹pages --> <property name="prefix" value="/pages/" /> <property name="suffix" value=".jsp" /> </bean> <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!-- 默认编码 --> <property name="defaultEncoding" value="utf-8" /> <!-- 文件大小最大值 --> <property name="maxUploadSize" value="10485760000" /> <!-- 内存中的最大值，写大时小文件不会生产临时文件，影响同步 --> <property name="maxInMemorySize" value="1" /> </bean> <!-- 配置kaptcha验证码 --> <bean id="captchaProducer" class="com.google.code.kaptcha.impl.DefaultKaptcha"> <property name="config"> <bean class="com.google.code.kaptcha.util.Config"> <constructor-arg type="java.util.Properties"> <props> <!-- 图片无边框 --> <prop key="kaptcha.border">no</prop> <!-- 图片宽度 --> <prop key="kaptcha.image.width">100</prop> <!-- 图片高度 --> <prop key="kaptcha.image.height">42</prop> <!-- 噪点实现类 --> <prop key="kaptcha.noise.impl">com.google.code.kaptcha.impl.NoNoise</prop> <!-- 图片样式 --> <prop key="kaptcha.obscurificator.impl">com.boryou.yuqing.util.CaptchaRender</prop> <!-- 背景颜色渐变，开始颜色 --> <prop key="kaptcha.background.clear.from">215,235,241</prop> <!-- 背景颜色渐变，结束颜色 --> <prop key="kaptcha.background.clear.to">215,235,241</prop> <!-- 验证码文字取值范围 --> <prop key="kaptcha.textproducer.char.string">0123456789</prop> <!-- 验证码长度 --> <prop key="kaptcha.textproducer.char.length">5</prop> <!-- 验证码文字颜色 --> <prop key="kaptcha.textproducer.font.color">0,161,233</prop> <!-- 验证码文字大小 --> <prop key="kaptcha.textproducer.font.size">30</prop> </props> </constructor-arg> </bean> </property> </bean> </beans>
spring-mybatis.xml文件内容为
<?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-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 引入配置文件 --> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:jdbc.properties" /> </bean> <!-- 本系统数据库配置 --> <bean id="dataSource-base" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driver}" /> <!-- 初始化连接大小 --> <property name="initialSize" value="${initialSize}"/> <!-- 连接池最大数量 --> <property name="maxTotal" value="${maxTotal}"/> <!-- 连接池最大空闲 --> <property name="maxIdle" value="${maxIdle}"/> <!-- 连接池最小空闲 --> <property name="minIdle" value="${minIdle}"/> <!-- 获取连接最大等待时间 --> <property name="maxWaitMillis" value="${maxWaitMillis}"/> <!-- 指明连接是否被空闲连接回收器(如果有)进行检验 --> <property name="testWhileIdle" value="true"/> <!-- 运行一次空闲连接回收器的时间间隔（60秒）--> <property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}"/> <!-- 验证时使用的SQL语句 --> <property name="validationQuery" value="SELECT 1" /> <!-- 借出连接时不要测试，否则很影响性能 --> <property name="testOnBorrow" value="false"/> </bean> <!-- 开发环境库 --> <bean id="dataSource-test" parent="dataSource-base"> <property name="url" value="${url-test}" /> <property name="username" value="${username-test}" /> <property name="password" value="${password-test}" /> </bean> <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource-test" /> <property name="configLocation" value="classpath:sqlMapConfig.xml"></property> <!-- 自动扫描mapping.xml文件 --> <property name="mapperLocations" value="classpath:com/zhouyh/mapper/*.xml"></property> </bean> <!-- DAO接口所在包名，Spring会自动查找其下的类 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.zhouyh.dao" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> </bean> <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource-test" /> </bean> </beans>
5、根据需要添加controller、dao、mapper、service等文件，整合web.xml文件
web.xml文件内容为
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>Archetype Created Web Application</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- web.xml配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mybatis.xml</param-value> </context-param> <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-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>SpringMVC</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener> </web-app>
6、最后完成项目整体结构如图所示：
至此，简单的Demo已经完成。
代码上传到了GitHub上，链接为：MavenWebDemo