SSM架构之框架整合

一、前言

整合说明：SSM整合可以使用多种方式，咱选择XML + 注解的方式
整合的思路：①先搭建整合的环境；②完成Spring的配置搭建；③再使用Spring整合SpringMVC框架；④最后使用Spring整合MyBatis框架；

二、spring搭建整合环境

（1）创建数据库和表结构

create database ssm;
create table account(
    id int primary key auto_increment,
    name varchar(20),
    money double
);

（2）创建maven的工程

	<!-- 版本锁定 -->
	<properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
    </properties>
​
    <dependencies>
        <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>
​
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</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-web</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-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-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
​
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
​
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
​
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>
​
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>
​
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
​
        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
​
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
​
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
​
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>
​
        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
​
    </dependencies>
    
 	<build>
        <finalName>ssm</finalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.2</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                        <showWarnings>true</showWarnings>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

（3）编写实体类Account（按照数据库写）
（4）创建Service接口和实现类
（5）编写测试方法Test

@Test
    public void run(){
        //创建工程 加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        //获取service 对象 调用方法
        AccountService service = ac.getBean(AccountService.class);
        service.findAll();
    }

（6）applicationContext.xml开启注解扫描

<context:component-scan base-package="cn.tx.serive"/>

三、Spring整合SpringMVC框架

1. 搭建和测试SpringMVC的开发环境

（1）在web.xml中配置DispatcherServlet前端控制器

<!--配置前端控制器-->
  <servlet>
    <!---->
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--启动加载-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>

（2）在web.xml中配置CharacterEncodingFilter过滤器解决中文乱码

<!--配置中文乱码的过滤器-->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

（3）创建springmvc.xml的配置文件，编写配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:mvc="http://www.springframework.org/schema/mvc" 
	xmlns:context="http://www.springframework.org/schema/context"
	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
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
    
    <!--注解扫描-->
	<context:component-scan base-package="cn.tx.Controller"></context:component-scan>

	<!--配置视图解析器-->
	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<!--jsp文件所在的目录-->
		<property name="prefix" value="/pages/"/>
		<!--文件的后缀-->
		<property name="suffix" value=".jsp"/>
	</bean>

	<!--设置静态资源不过滤-->
	<!--
	<mvc:resources mapping="/css/**" location="/css/"/>
	<mvc:resources mapping="/js/**" location="/js/"/>
	<mvc:resources mapping="/images/**" location="/images/"/>
	-->

	<!--开启对山坡springMVC注解的支持-->
	<mvc:annotation-driven/>
</beans>

（4）测试SpringMVC的框架搭建是否成功
①编写index.jsp、suc.jsp和list.jsp编写，超链接
②创建AccountController类，编写方法，进行测试

@Controller
@RequestMapping("/account")
public class AccountController {

    @RequestMapping("/findAll.do")
    public ModelAndView findAll(){
        System.out.println("表现层：查询所有的账号...");
        ModelAndView mv = new ModelAndView();
        mv.setViewName("suc");
        return mv;
    }
}

2. Spring整合SpringMVC的框架

①目的：在controller中能成功的调用service对象中的方法。
②在项目启动的时候，就去加载applicationContext.xml的配置文件，在web.xml中配置ContextLoaderListener监听器（该监听器只能加载WEB-INF目录下的applicationContext.xml的配置文件）。
步骤：（1）配置监听器；（2）加载类路径下的配置文件；（3）将spring注入到AccountController中，并注解调用方法；

<!--配置监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--加载类路径下的配置文件-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

@Controller
@RequestMapping("/role")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping("/save.do")
    public ModelAndView save(){
        System.out.println("表现层：查询所有的账号...");

        List<Account> list = accountService.findAll();

        ModelAndView mv = new ModelAndView();
        mv.setViewName("suc");
        return mv;
    }
}

四、Spring整合MyBatis框架

1. 搭建和测试MyBatis的环境

（1）配置主配置文件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>
	<!-- 配置环境 -->
	<environments default="mysql">
		<environment id="mysql">
			<transactionManager type="JDBC"/>
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql:///ssm"/>
				<property name="username" value="root"/>
				<property name="password" value="root"/>
			</dataSource>
		</environment>
	</environments>
	
	<!-- 引入映射配置文件 -->
	<mappers>
		<!--  
		<mapper class="cn.tx.dao.AccountDao"/>
		<mapper class="cn.tx.dao.UserDao"/>
		-->
		<package name="cn.tx.dao"/>
	</mappers>
</configuration>  

（2）配置接口AccountDao;

public interface AccountDao {
    @Select("select * from account")
    public List<Account> findAll();
}

（3）配置测试方法TestMyBaties;

public class TestMyBatis {
    @Test
    public void run() throws IOException {
        /*加载配置文件*/
        InputStream inputStream = Resources.getResourceAsStream("SqlMapConfig.xml");
        //构建工厂
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(inputStream);
        //创建session
        SqlSession session = factory.openSession();
        //获取到代理对象
        AccountDao mapper = session.getMapper(AccountDao.class);
        //调用方法
        List<Account> list = mapper.findAll();
        for (Account account : list) {
            System.out.println(account);
        }
        //关闭资源
        session.close();
        inputStream.close();
    }
}

2. Spring整合MyBatis框架

目的：把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中

（1）在applicationContext.xml中配置连接池和扫描dao接口所在的包

<?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: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.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context.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">

	<!--扫描包-->
	<context:component-scan base-package="cn.tx.serive"/>

	<!--配置druid连接池-->
	<!--配置开源连接池 Druid连接池 -->
	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
		<property name="url" value="jdbc:mysql:///ssm" />
		<property name="username" value="root" />
		<property name="password" value="root" />
	</bean>

	<!--spring 整合mybatis  SqlSessionFactoryBean创建工厂对象-->
	<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
	</bean>

	<!--配置扫描dao接口所在的包-->
	<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="sqlSessionFactory" ref="sessionFactory"/>
		<property name="basePackage" value="cn.tx.dao"/>
	</bean>
</beans>

（2）AccountServiceImpl注入AccountDao

@Service
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public List<Account> findAll() {

        System.out.println("业务层:查询所有的账号...");
        return accountDao.findAll();
    }
}

@Controller
@RequestMapping("/role")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping("/save.do")
    public ModelAndView save(){
        System.out.println("表现层：查询所有的账号...");

        List<Account> list = accountService.findAll();
        for (Account account : list) {
            System.out.println(account);
        }

        ModelAndView mv = new ModelAndView();
        mv.setViewName("suc");
        return mv;
    }
}

public interface AccountDao {

    @Select("select * from account")
    public List<Account> findAll();
}

（3）启动Tomcat服务器

上诉操作只能完成查询操作，为了满足增删改查，则需要配置事务

①配置声明式事务管理

	<!--配置声明式事务管理-->
	<!--平台事务管理器-->
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"/>
	</bean>

	<!--配置事务的通知-->
	<tx:advice id="txAvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="find" read-only="true"/>
			<tx:method name="*"/>
		</tx:attributes>
	</tx:advice>

	<!--配置事务的增强-->
	<aop:config>
		<aop:advisor advice-ref="txAvice" pointcut="execution(public * cn.tx.serive.*ServiceImpl.*(..))"/>
	</aop:config>

②表单代码（写一个from表单，用于增加数据）
③controller代码

	/**
     * 保存
     * @return
     */
    @RequestMapping("/save.do")
    public String save(Account account){
        // 调用service，保存数据
        accountService.save(account);
        return "suc";
    }

④service代码

public void save(Account account) {
        accountDao.save(account);
    }

⑤dao代码

@Insert("insert into account(name,money) values (#{name},#{money})")
    void save(Account account) ;