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SSM框架,既是Sping + Spring MVC + Mybatis,本篇博文主要是作为本人的备忘,记录如何整合SSM框架,以及如何集成单元测试,关于每一个配置的作用大都加上了注释,至于如何搭建项目这里不在赘述(我使用的是web项目),可以自己查找相关资料。我使用的Spring版本是4.1.3.RELEASE,Mybatis版本是3.3.0,使用Maven进行构建。
注意:首先申明如下的配置是根据我的目录结构来配置的,我的目录结构如下所示:
![目录结构](https://brightloong.github.io/images/directory structure .jpg)
使用Maven添加相关jar包。
关于pom.xml的配置如下。
<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>ssm_test</groupId>
<artifactId>ssm_test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm_test</name>
<description />
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<!--配置依赖包 -->
<dependencies>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
</dependency>
<!-- 1.日志,slf4j规范 日志实现:log4j,logback,commin-logging 使用:slf4j + logback -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 2.数据库相关依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.7</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- 3.dao mybatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- mybatis自身实现的整合spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!-- 4.servelet web 相关依赖 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 5.spring的依赖 -->
<!-- 1)spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- spring aop 相关 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.6.11</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.11</version>
</dependency>
<!-- 2)spring dao层依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- 3)spring web依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- 4)spring test依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- junit依赖 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<resources>
<resource>
<directory>src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>2.2</version>
<configuration>
<warSourceDirectory>${basedir}/WebRoot</warSourceDirectory>
<version>3.0</version>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>
SSM整合配置
为了使配置层次清楚,结构清晰,我把配置按照web、service和dao分别分为spring-web.xml、spring-service.xml和spirng-dao.xml,下面依次介绍这几个配置文件。
spring-web.xm配置
该配置中主要是一些资源映射的相关配置。
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.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">
<!-- 配置springMVC -->
<!-- 1.开启springMVC注解模式 -->
<!-- 简化配置:
1)自动注册defaultAnnotationHandlerMapping,AnnotationMethodHandlARadpter
2)提供一系列:数据绑定,数字和日期的format @NumberFoamat,@DataTiemFormat
xml,json默认读写支持-->
<mvc:annotation-driven></mvc:annotation-driven>
<!--2.servelt-mapping 映射路径:"/"
静态资源默认servlet配置
1.加入对静态资源的处理:js,gif,png
2.允许用/做整体映射-->
<mvc:default-servlet-handler/>
<!-- 3. 配置jsp显示viewResolver-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 4.扫描web相关的包 -->
<context:component-scan base-package="com.chenlong.study.web"></context:component-scan>
<!-- 获取properties -->
<bean id="propertyConfigurer" class="com.chenlong.study.utils.PropertyUtil">
<property name="locations" >
<list>
<value>classpath:*.properties</value>
</list>
</property>
</bean>
<aop:aspectj-autoproxy/>
</beans>
在上述配置中最后关于获取properties的配置,我创建了一个PropertyUtil类用来获取properties文件,并读取里面的属性。PropertyUtil.java如下:
public class PropertyUtil extends PropertyPlaceholderConfigurer {
private static Map<String,String> propertyMap;
@Override
protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props) throws BeansException {
super.processProperties(beanFactoryToProcess, props);
propertyMap = new HashMap<String, String>();
for (Object key : props.keySet()) {
String keyStr = key.toString();
String value = props.getProperty(keyStr);
propertyMap.put(keyStr, value);
}
}
//static method for accessing context properties
public static Object getProperty(String name) {
return propertyMap.get(name);
}
}
spring-service.xml配置
配置自动扫描,用于自动注入;并配置注解事务。
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" 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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 扫描service包下的所有注解类型 -->
<context:component-scan base-package="com.chenlong.study.service"></context:component-scan>
<!-- 配置事务管理器,dataSource在spring-dao.xml中配置 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置基于注解的声明事务
默认使用注解来管理事务行为-->
<tx:annotation-driven transaction-manager="transactionManager"/>
<aop:aspectj-autoproxy/>
</beans>
配置spring-dao.xml
在配置sprign-dao.xml之前,先配置mybatis的全局文件mybatis-config.xml如下:
<?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>
<!-- 配置全局属性 -->
<settings>
<!-- 获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"></setting>
<!-- 使用列命替换别名 -->
<setting name="useColumnLabel" value="true"></setting>
<!-- 开启驼峰命名转换 -->
<setting name="mapUnderscoreToCamelCase" value="true"></setting>
</settings>
</configuration>
在jdbc.properties中配置数据库信息如下:
jdbc.username=root
jdbc.password=
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.jdbcUrls=jdbc:mysql://localhost:3306/test?useUnicode\=true&characterEncoding\=UTF-8
然后配置spring-dao.xml如下:
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" 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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置整合mybatis过程 -->
<!-- 1.配置数据库相关参数 -->
<!-- 引入属性文件 -->
<context:property-placeholder location="classpath:jdbc.properties" />
<!-- 2.配置数据库连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driverClass}"></property>
<property name="jdbcUrl" value="${jdbc.jdbcUrls}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<!-- 配置连接池私有属性 -->
<property name="maxPoolSize" value="30"></property>
<property name="minPoolSize" value="10"></property>
<!-- 关闭连接后不自动提交 -->
<property name="autoCommitOnClose" value="false"></property>
<!--获取连接超时时间 -->
<property name="checkoutTimeout" value="1000"></property>
<!-- 重试次数 -->
<property name="acquireRetryAttempts" value="2"></property>
</bean>
<!-- 3.配置sqlsessionfactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"></property>
<!-- 配置mybatis全局文件 -->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!-- 扫描entity包使用别名 -->
<property name="typeAliasesPackage" value="com.chenlong.study.entity"></property>
<!-- 扫描mapper文件 -->
<property name="mapperLocations" value="classpath:com/chenlong/study/dao/*.xml"></property>
</bean>
<!-- 4.配置扫描dao接口包,动态实现dao接口,自动注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlsessionfactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
<!-- 给出扫描Dao接口包 -->
<property name="basePackage" value="com.chenlong.study.dao"></property>
</bean>
<aop:aspectj-autoproxy/>
</beans>
配置web.xml
在完成上述配置后,配置web.xml,配置springmvc和spring的servlet
<?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_1.xsd"
id="WebApp_ID" version="3.1">
<display-name>sh_student</display-name>
<!-- 配置springmvc dispatcherServlet -->
<servlet>
<servlet-name>dispacherservlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-*.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispacherservlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-*.xml </param-value>
</context-param>
<listener>
<listener-class> org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
单元测试集成
在pom.xm文件中我们曾加入如下的jar包用来做单元测试。
<!-- 4)spring test依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
下面我给出一个测试示例:
//整合junit和spring,让junit在启动时候加载springIOC容器
@RunWith(SpringJUnit4ClassRunner.class)
//告诉junit spring的配置文件,需要用到的配置文件,如果是dao的话可以不用spring-service.xml
@ContextConfiguration({ "classpath:spring-dao.xml",
"classpath:spring-service.xml" })
public class SeckillServiceTest {
@Autowired
private SeckillService seckillService;
private Logger logger = LoggerFactory.getLogger(this.getClass());
@Test
public void testGetSeckillList() {
List<Seckill> seckills = seckillService.getSeckillList();
logger.info("list={}", seckills);
}
}
关于SSM框架的整合和单元测试的集成就到此结束。