搭建环境

使用Spring（业务层）整合其他的框架SpringMVC（表现层）和MyBatis（持久层）

Spring框架

  1. 创建数据库表

    CREATE DATABASE ssm;
    
USE ssm;
    
CREATE TABLE account(
    
	id INT PRIMARY KEY AUTO_INCREMENT,
    
	NAME VARCHAR(20),
    
	money DOUBLE
    
);

  2. pom文件导入坐标

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

  3. 实体类Account

    public class Account implements Serializable {

    private Integer id;
    
    private String name;
    
    private Double money;
    
}

  4. AccountDao接口（Spring框架）

    public interface AccountDao {

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

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

  5. AccountService接口

    public interface AccountService {

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

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

  6. AccountServiceImpl实现类

    @Service("accountService")
    
public class AccountServiceImpl implements AccountService {
    
    @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，保存账户信息");
    
    }
    
}

  7. 表现层AccountController

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

  8. 配置文件applicationContext.xml

    <?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">

    <!--开启注解扫描，希望处理service和dao，controller不需要spring框架去处理，它会有自己的方法-->
    
    <context:component-scan base-package="com.atgw">
    
        <!--配置哪些注解不扫描-->
    
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    
    </context:component-scan>

</beans>

SpringMVC框架搭建

  1. web.xml
1. <web-app>

     <display-name>Archetype Created Web Application</display-name>

  <!--配置前端服务器-->

  <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>

    <!--启动服务器，创建servlet-->

    <load-on-startup>1</load-on-startup>

  </servlet>

  <servlet-mapping>

    <servlet-name>dispatcherServlet</servlet-name>

    <url-pattern>/</url-pattern>

  </servlet-mapping>

  <!--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>

</web-app>

  1. springmvc.xml

    <?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">

    <!--开启注解扫描，只扫描Controller注解-->
    
    <context:component-scan base-package="com.atgw">
    
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    
    </context:component-scan>

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

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

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

  2. AccountController

    <?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">

    <!--开启注解扫描，只扫描Controller注解-->
    
    <context:component-scan base-package="com.atgw">
    
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    
    </context:component-scan>

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

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

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

  3. index.jsp

        <a href="account/findAll">测试</a>

  4. list.jsp

          <h3>查询所有账户</h3>

Spring整合SpringMVC框架

1web.xml

  <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件-->

  <listener>

      <listener-class>org.springframework.web.context.ContextLoader</listener-class>

  </listener>

  <!--设置配置文件的路径-->

  <context-param>

    <param-name>contextConfigLocation</param-name>

    <param-value>classpath:applicationContext.xml</param-value>

  </context-param>

2AccountController）（方法中自动注入service）

@Controller

@RequestMapping(value = "/account")

public class AccountController {

    //自动注入

    @Autowired

    private AccountService accountService;

    @RequestMapping("/findAll")

    public String findAll(){

        System.out.println("表现层：查询所有账户");

        //调用Service的方法

        accountService.findAll();

        return "list";

    }

}

Spring整合MyBatis框架

  1. web.xml配置Sping监听器，在服务器启动时加载applicationContext.xml配置文件

      <!--配置Spring的监听器，默认只加载WEB-INF目录下的application.xml配置文件-->
    
  <listener>
    
      <listener-class>org.springframework.web.context.ContextLoader</listener-class>
    
  </listener>
    
  <!--设置配置文件的路径-->
    
  <context-param>
    
    <param-name>contextConfigLocation</param-name>
    
    <param-value>classpath:applicationContext.xml</param-value>
    
  </context-param>

  2. SqlMapConfig.xml配置数据库环境，引入映射类的地址

    <?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"></transactionManager>
    
            <dataSource type="POOLED">
    
                <property name="driver" value="com.mysql.jdbc.Driver"/>
    
                <property name="url" value="jdbc:mysql://localhost:3306/ssm"/>
    
                <property name="username" value="root"/>
    
                <property name="password" value="000519"/>
    
            </dataSource>
    
        </environment>
    
    </environments>

    <!--引入映射配置文件-->
    
    <mappers>
    
        <!--<mapper class="com.atgw.dao.AccountDao"/>-->
    
        <package name="com.atgw.dao"/>
    
    </mappers>
    
</configuration>

  3. AccountDao接口，添加注释，写SQL语句

    public interface AccountDao {

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

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

  4. 测试

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

    //保存数据
    
    @Test
    
    public void run2() throws Exception {
    
        //加载配置文件
    
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
    
        //创建SQLSessionFactory对象
    
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
    
        //创建SQLSession对象
    
        SqlSession session = factory.openSession();
    
        //获取代理对象
    
        AccountDao dao = session.getMapper(AccountDao.class);
    
        Account account = new Account();
    
        account.setName("司司");
    
        account.setMoney(199.0);
    
        dao.saveAccount(account);

        //提交事务（默认是手动提交事务的）
    
        session.commit();

        //关闭资源
    
        session.close();
    
        in.close();
    
    }

  5. 希望把dao对象代理到IOC容器中

    SQLSessionFactory工厂可以创建SQLSession，然后创建dao代理对象，代理到IOC容器中

        <!--Spring整合MyBatis框架-->
    
    <!--配置连接池-->
    
    <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/ssm"/>
    
        <property name="user" value="root"/>
    
        <property name="password" value="000519"/>
    
    </bean>

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

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

  6. AccountDao接口中添加@Repository注解

    @Repository//交给IOC容器
    
public interface AccountDao {
    
}

  7. AccountController中的方法中对遍历到数据的进行页面遍历

        @RequestMapping("/findAll")
    
    public String findAll(Model model){
    
        System.out.println("表现层：查询所有账户");
    
        //调用Service的方法
    
        List<Account> list = accountService.findAll();
    
        model.addAttribute("list",list);
    
        return "list";
    
    }

  8. list.jsp页面（遍历数据）

    <%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
    
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    
<html>
    
<head>
    
    <title>Title</title>
    
</head>
    
<body>
    
    <h3>查询所有账户</h3>
    
    <c:forEach items="${list}" var="account">
    
        ${account.name}<br/>
    
    </c:forEach>
    
</body>
    
</html>

  9. 配置事务

    applicationContext.xml

        <!--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.atgw.service.impl.*ServiceImpl.*(..))"/>
    
    </aop:config>

  10. AccountController

        @RequestMapping("/save")
    
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
    
        accountService.saveAccount(account);
    
       //重定向
    
        response.sendRedirect(request.getContextPath()+"/account/findAll");
    
        return;
    
    }

  11. index.jsp

        <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>

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