SSM框架整合

一、搭建整合环境

1. 整合说明
SSM整合可以使用多种方式，咱们会选择XML + 注解的方式

2. 整合的思路

	1. 先搭建整合的环境
	2. 先把Spring的配置搭建完成
	3. 再使用Spring整合SpringMVC框架
	4. 最后使用Spring整合MyBatis框架

3. 创建数据库和表结构
在这里插入图片描述
4. 创建maven的工程

创建controller子模块（打包方式是war包）
创建service子模块（打包方式是jar包）
创建dao子模块（打包方式是jar包）
创建domain子模块（打包方式是jar包）
controller依赖于service，service依赖于dao，dao依赖于domain
在pom.xml文件中引入坐标依赖

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <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 -->

	<!--aspectjweaver：简单理解，支持切入点表达式等等
		aspectjrt：简单理解，支持aop相关注解等等
		aspectjweaver包含aspectjrt，所以我们只需要引入aspectjweaver依赖包就可以了-->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>

	<!--spring-aop：AOP核心功能，例如代理工厂等等-->
    <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>

	<!-- spring整合junit-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>

	<!--一组事务控制的接口-->
    <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>compile</scope>
    </dependency>

	<!--mysql数据库驱动依赖-->
    <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>

	<!--jstl标签库-->
    <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>

	<!--数据库-->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
  </dependencies>

部署项目，只要把项目加入到tomcat服务器中即可

5.编写实体类，在ssm_domain项目中编写

/**
 * 账户的实体类
 */
public class Account implements Serializable {
    private Integer id;
    private String name;
    private Double money;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

6. 编写dao接口

/**
 * 账户的持久层接口
 */
public interface IAccountDao {

    public List<Account> findAll();//查询所有账户信息

    public void saveAccount(Account account);//保存账户信息
}

7. 编写service接口和实现类

/**
 * 业务层接口
 */
public interface IAccountService {

    public List<Account> findAll();//查询所有账户信息

    public void saveAccount(Account account);//保存账户信息
}

/**
 * 业务层实现类
 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService {

    @Override
    public List<Account> findAll() {
        System.out.println("业务层，查询所有账户");
        return null;
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层，保存账户");
    }
}

二、Spring框架代码的编写

搭建和测试Spring的开发环境

在resources下创建spring.xml的配置文件，编写具体的配置信息。

<?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">
    <!--开启注解要扫描的包,希望处理service和dao，controller不需要spring去处理-->
    <context:component-scan base-package="com.shadow">
        <!--配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>   
    </bean>
</beans>

在test包下编写测试方法，进行测试

public class testSpring {
    @Test
    public void run1(){
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("spring.xml");
        //获取对象
        IAccountService as = ac.getBean("accountService",IAccountService.class);
        //执行方法
        as.findAll();
    }
}

三、Spring整合SpringMVC框架

1. 搭建和测试SpringMVC的开发环境

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>
    <!--全局初始化参数 contextConfigLocation是DispatcherServlet的一个固定参数-->
    <!--加载springmvc配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--启动服务器，创建该servlet-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

在web.xml中配置DispatcherServlet过滤器解决中文乱码

<!--配置解决中文乱码的过滤器-->
 <filter>
   <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
   <url-pattern>/*</url-pattern>
 </filter-mapping>

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">

   <!--扫描controller的注解，别的不扫描-->
   <context:component-scan base-package="com.shadow">
       <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:include-filter>
   </context:component-scan>

   <!--配置视图解析器-->
   <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="prefix" value="/WEB-INF/pages/"/>
       <property name="suffix" value=".jsp"/>
   </bean>

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

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

测试SpringMVC的框架搭建是否成功
1. 编写index.jsp和list.jsp

<body>
        <a href="account/findAll">测试查询</a>
        <form action="account/save" method="post">
            姓名：<input type="text" name="name"><br>
            金额：<input type="text" name="money"><br>
            <input type="submit" value="保存"><br>
        </form>
</body>

2.创建AccountController类，编写方法，进行测试

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

    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层,查询所有账户信息");
        return "list";
    }
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("表现层,保存");
        return ;
    }
}

2. Spring整合SpringMVC的框架

目的：在controller中能成功的调用service对象中的方法。
在项目启动的时候，就去加载spring.xml的配置文件，在web.xml中配置ContextLoaderListener监听器

  <!--配置spring监听器,默认只加载WEB-INF目录下的spring.xml配置文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--设置配置文件路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring.xml</param-value>
  </context-param>

在controller中注入service对象，调用service对象的方法进行测试

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

    @Autowired
    private IAccountService accountService;

    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层,查询所有账户信息");
        //调用service方法
        List<Account> accounts = accountService.findAll();
        model.addAttribute("list",accounts);
        return "list";
    }
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("表现层,保存");
        //调用service方法
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return ;
    }
}

四、Spring整合MyBatis框架

1. 搭建和测试MyBatis的环境

在web项目中编写mybatis-config.xml的配置文件，编写核心配置文件

<?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">
<!-- mybatis主配置文件 -->
<configuration>
    <properties resource="jdbcConfig.properties"></properties>
    <!-- 配置环境 default选择默认值-->
    <environments default="mysql">
        <!-- 配置mysql的环境 -->
        <environment id="mysql">
            <transactionManager type="JDBC" ></transactionManager>	<!-- 配置事物的类型 -->
            <dataSource type="POOLED">	<!-- 配置数据源（也叫连接池） -->
                <!-- 配置连接数据库的4个基本信息 -->
                <property name="driver" value="${jdbc.driver}" />
                <property name="url" value="${jdbc.url}" />
                <property name="username" value="${jdbc.username}" />
                <property name="password" value="${jdbc.password}" />
            </dataSource>
        </environment>
    </environments>

    <!-- 指定映射配置文件的位置，映射配置文件指的是每个dao独立的配置文件
        如果是用注解来配置的话，此处应该使用class属性指定被注解的dao全限定类名-->
    <mappers>
        <!--mapper resource="com/shadow/dao/IUserDao.xml"/>必须是全限定类名-->
       <!--mapper class="com.shadow.dao.IUserDao"/-->

        <!--package标签是用于指定dao接口所在的包，当指定了之和就不再需要写mapper以及resource或者class了-->
        <package name="com.shadow.dao"></package>
    </mappers>
</configuration>

在AccountDao接口的方法上添加注解，编写SQL语句

	@Select("select * from account")
    public List<Account> findAll();//查询所有账户信息

    @Insert("insert into account(name,money) values (#{name},#{money})")
    public void saveAccount(Account account);//保存账户信息

编写测试的方法

@Test
    public void run1()throws Exception{
        //1、加载配置文件
        InputStream in = Resources.getResourceAsStream("mybatis.xml");
        //2、创建SqlSessionFactory对象
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        //3、创建SqlSession对象
        SqlSession session = factory.openSession();
        //4、获取代理对象
        IAccountDao dao = session.getMapper(IAccountDao.class);
        //5、查询所有数据
        List<Account> accounts = dao.findAll();
        for(Account account : accounts){
            System.out.println(account);
        }
        //6、关闭资源
        session.close();
        in.close();
    }

2. Spring整合MyBatis框架

目的：把mybatis-configxml配置文件中的内容配置到spring.xml配置文件中

<!--spring整合Mybatis框架-->
    <!--配置c3p0连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/easy02"/>
        <property name="user" value="root"/>
        <property name="password" value="zhuying666"/>
    </bean>

    <!--配置SqlSessionFactory工厂-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--配置IAccountDao接口所在的包-->
    <bean id="scannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.shadow.dao"></property>
    </bean>

在AccountDao接口中添加@Repository注解
在service中注入dao对象，进行测试
代码如下

/**
 * 账户的持久层接口
 */
@Repository("accountDao")
public interface IAccountDao {

    @Select("select * from account")
    public List<Account> findAll();//查询所有账户信息

    @Insert("insert into account(name,money) values (#{name},#{money})")
    public void saveAccount(Account account);//保存账户信息
}

/**
 * 业务层实现类
 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService {

    @Autowired
    private IAccountDao accountDao;

    @Override
    public List<Account> findAll() {
        System.out.println("业务层，查询所有账户");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层，保存账户");
        accountDao.saveAccount(account);
    }
}

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

    @Autowired
    private IAccountService accountService;

    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层,查询所有账户信息");
        //调用service方法
        List<Account> accounts = accountService.findAll();
        model.addAttribute("list",accounts);
        return "list";
    }
    @RequestMapping("/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("表现层,保存");
        //调用service方法
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return ;
    }

}

配置Spring的声明式事务管理

<!--配置spring框架声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>

    <!--配置AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.shadow.service.impl.*.*(..))"/>
    </aop:config>

zyinger

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SSM（SpringMVC+Spring+Mybatis）框架整合

SSM框架整合

一、搭建整合环境

二、Spring框架代码的编写

三、Spring整合SpringMVC框架

四、Spring整合MyBatis框架

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