SSM整合
在博客的前面介绍了mybatis，spring，springmvc的使用，那么这篇博客将介绍将mybatis和spring，springmvc的整合。
整合之前，我们需要明白一个点，spring和mybatis之间进行整合不像spring和springmvc一样是天然一体，所以在中间就需要一个磨合剂，那就是mybatis-spring这个依赖。
jar包的导入
使用maven进行项目管理
<dependency>
<groupId>javax.servletgroupId>
<artifactId>javax.servlet-apiartifactId>
<version>3.1.0version>
<scope>providedscope>
dependency>
<dependency>
<groupId>javax.servletgroupId>
<artifactId>jstlartifactId>
<version>1.2version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-coreartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-context-supportartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-beansartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aspectsartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-aopartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-txartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>8.0.13version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.2.6version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.0version>
dependency>
<dependency>
<groupId>com.github.pagehelpergroupId>
<artifactId>pagehelperartifactId>
<version>4.1.6version>
dependency>
<dependency>
<groupId>joda-timegroupId>
<artifactId>joda-timeartifactId>
<version>2.9.9version>
dependency>
<dependency>
<groupId>commons-codecgroupId>
<artifactId>commons-codecartifactId>
<version>1.10version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-apiartifactId>
<version>1.7.7version>
dependency>
<dependency>
<groupId>org.slf4jgroupId>
<artifactId>slf4j-log4j12artifactId>
<version>1.7.7version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>1.2.17version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
<version>${jackson.version}version>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-annotationsartifactId>
<version>${jackson.version}version>
dependency>
<dependency>
<groupId>net.sf.json-libgroupId>
<artifactId>json-libartifactId>
<version>2.4version>
<classifier>jdk15classifier>
dependency>
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-coreartifactId>
<version>${jackson.version}version>
dependency>
<dependency>
<groupId>org.codehaus.jacksongroupId>
<artifactId>jackson-core-aslartifactId>
<version>1.9.13version>
dependency>
<dependency>
<groupId>org.codehaus.jacksongroupId>
<artifactId>jackson-mapper-aslartifactId>
<version>1.9.13version>
dependency>
<dependency>
<groupId>com.mchangegroupId>
<artifactId>c3p0artifactId>
<version>0.9.2.1version>
dependency>
<dependency>
<groupId>commons-dbcpgroupId>
<artifactId>commons-dbcpartifactId>
<version>1.2.2version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>fastjsonartifactId>
<version> 1.2.47version>
dependency>
<dependency>
<groupId>com.github.kevinsawickigroupId>
<artifactId>http-requestartifactId>
<version>5.6version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>4.11version>
<scope>testscope>
dependency>
在这里面导入的jar包有点多，不过可以基本满足我们的需求了。
文件的配置
首先，我们要明确文件的配置从哪里开始，那么肯定是需要最先配置web.xml了，因为它管理着web项目的配置信息。
-
web.xml
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" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd http://www.springframework.org/schema/mvc/spring-mvc.xsd" version="3.1"> <listener> <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class> listener> <context-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:spring/applicationContext.xmlparam-value> context-param> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListenerlistener-class> listener> <servlet> <servlet-name>springmvcservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <init-param> <param-name>contextConfigLocationparam-name> <param-value>classpath:/spring/springmvc-servlet.xmlparam-value> init-param> servlet> <filter> <filter-name>characterEncodingFilterfilter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class> <init-param> <param-name>encodingparam-name> <param-value>UTF-8param-value> init-param> <init-param> <param-name>forceRequestEncodingparam-name> <param-value>falseparam-value> init-param> <init-param> <param-name>forceResponseEncodingparam-name> <param-value>trueparam-value> init-param> filter> <filter-mapping> <filter-name>characterEncodingFilterfilter-name> <url-pattern>/*url-pattern> filter-mapping> <servlet-mapping> <servlet-name>springmvcservlet-name> <url-pattern>/url-pattern> servlet-mapping> web-app> -
applicationContext.xml文件的配置
在web.xml文件配置中,我们关于上下文文件的引入就只写了一个
applicationContext.xml,那么其他文件怎么办呢？我们可以在applicationContext.xml文件中引入其他的文件。xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <import resource="classpath:/spring/spring-*.xml"/> beans> -
配置springmvc-servlet.xml文件
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: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-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.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"> <context:component-scan base-package="cc.weno.controller"/> <mvc:default-servlet-handler/> <mvc:annotation-driven/> <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/**"/> <mvc:exclude-mapping path="/index"/> <mvc:exclude-mapping path="/login"/> <bean class="cc.weno.interceptor.LoginInterceptor"/> mvc:interceptor> mvc:interceptors> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver"> <property name="prefix" value="/jsp/"/> <property name="suffix" value=".jsp"/> bean> beans> -
在配置mybatis文件之前，我们需要配置一下
jdbc.propertiesmysql.driver=com.mysql.jdbc.Driver mysql.url=数据库地址 例如：jdbc:mysql://localhost:3306/test mysql.username=账号 mysql.password=密码 #定义初始连接数 dbcp.initialSize=0 #定义最大连接数 dbcp.maxActive=20 #定义最大空闲 dbcp.maxIdle=20 #定义最小空闲 dbcp.minIdle=1 #定义最长等待时间 dbcp.maxWait=60000 -
spring-mybatis.xml文件的配置
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:tx="http://www.springframework.org/schema/cache" 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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:component-scan base-package="cc.weno"/> <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="location" value="classpath:/config/jdbc.properties"/> bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" > <property name="driverClassName" value="${mysql.driver}"/> <property name="url" value="${mysql.url}"/> <property name="username" value="${mysql.username}"/> <property name="password" value="${mysql.password}"/> <property name="initialSize" value="${dbcp.initialSize}"/> <property name="maxIdle" value="${dbcp.maxIdle}"/> <property name="minIdle" value="${dbcp.minIdle}"/> <property name="maxWait" value="${dbcp.maxWait}"/> <property name="maxActive" value="${dbcp.maxActive}"/> bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:mybatis/*.xml"/> <property name="configuration"> <bean class="org.apache.ibatis.session.Configuration"> <property name="mapUnderscoreToCamelCase" value="true"/> bean> property> bean> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="cc.weno.mapper"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> bean> beans>
项目结构如图所示
| 层 | 作用 | 设计 |
|---|---|---|
| 持久层(DAO层) | DAO层负责与数据库联系，进行数据持久化 | 首先设计接口，然后再配置×××mapper.xml文件 |
| 业务层（Service层） | 负责业务模块的逻辑应用设计 | 先设计接口，再设计实现类，然后调用接口来实现逻辑业务（spring-mybatis.xml文件配置后，直接调用） |
| Control层（控制层） | 负责具体模块的控制 | 调用Service层的接口来控制业务 |
DAO层和前面的博客配置没有什么区别，让我们主要来看看Service层的配置。
首先，先定义UserService的接口
public interface UserService {
User getUser(String name);
}
然后进行Service接口的实现，使用@Service标注Service层
@Service("userService")
public class UserServiceImpl implements UserService {
/**
* mybatis的接口
*/
@Resource
private UserMapper userMapper;
// 直接进行使用
@Override
public User getUser(String name) {
userMapper.getUser(name);
}
}
在Controller层中
@Controller
public class UserController {
@Resource
private UserService userService;
@RequestMapping(value = "/index")
@ResponseBody
public String index(@RequestParam("name")String name) {
User u =userService.getUser(name);
return u;
}
}
UserMapper.xml文件倒是没有任何要更改的地方，只要别忘了配置
然后SSM框架基本的整合就到这里了，在这里面代码没几行，配置文件倒是写了一大堆〒_〒【此时好想说：springboot真香】
