SSM框架整合

搭建整合环境

项目目录：

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、MyBatis框架

3. 创建数据库和表结构

　　1. 语句

　　　　create database ssm;

　　　　use ssm;

　　　　create table account(   

　　　　　　id int primary key auto_increment,   

　　　　　　name varchar(20),   

　　　　　　money double );

4. 创建maven的工程

　　1. 在ssm_parent的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 -->
    <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>

　　2. 部署ssm_web的项目，只要把ssm_web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

public class Account implements Serializable {

    private  int id;
    private String name;
    private double money;

    public int getId() {
        return id;
    }

    public void setId(int 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;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

6. 编写dao接口

public interface AccountDao {

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

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

}

7. 编写service接口和实现类

Service接口

public interface AccountService {

    public void saveAccount(Account account);

    public List<Account> findAll();
}

=============================
Service实现类

@Service("accountService")
public class AccountServiceImp implements AccountService {

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层：保存用户。。。");
    }

    @Override
    public List<Account> findAll() {
        System.out.println("业务层：查询所有用户。。。");
        return null;
    }
}

搭建和测试Spring的开发环境

1. 在ssm_web项目中创建applicationContext.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">

    <!--开启注解扫描器，要扫描的是service和dao层的注解，要忽略web层的注解，因为web层是由springmvc去管理的-->
    <context:component-scan base-package="com.churujianghudezai">
        <!--配置要忽略的注解-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

</beans>

2. 在ssm_web项目中编写测试方法，进行测试

public class TestSpring {

    @Test
    public void run1(){
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        //获取对象
        AccountService as = (AccountServiceImp)ac.getBean("accountService");
        //调用方法
        as.findAll();
    }
}

测试结果：

spring环境配置没问题！ 

搭建和测试SpringMVC的开发环境

1. 在web.xml中配置DispatcherServlet前端控制器、DispatcherServlet过滤器解决中文乱码、spring监听器（该监听器目的在于服务器一启动就将spring配置文件加载进来，单纯测试springmvc环境其实用不着它）

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

  <!--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.ContextLoaderListener</listener-class>
  </listener>
  <!--但一般要是把applicationContext.xml放入resources中，需要重新设置配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value><!--表明找类路径下的配置文件-->
  </context-param>

  <!--配置前端控制器：服务器启动必须加载，需要加载springmvc.xml配置文件-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value><!--指定配置文件在类路径下-->
    </init-param>
    <!--服务器启动的时候，让dispatcherServelt对象创建-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--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>

</web-app>

2. 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.churujianghudezai">
        <context:include-filter type="annotation"
                                expression="org.springframework.stereotype.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="/WEB-INF/pages/"/>
        <!--文件的后缀名-->
        <property name="suffix" value=".jsp"/>
    </bean>

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

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

</beans>

3. 编写控制器

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

    /**
     * 查询所有的数据
     */
    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层：查询所有账户。。。")；
        return "list";
    }
}

4.编写index.jsp和list.jsp页面

index.jsp

<body>
<a href="account/findAll">查询所有</a>
</body>

=========================
list.jsp

<body>
    <h3>查询所有的帐户成功！ </h3>
</body>

测试结果没问题，可实现跳转！

搭建和测试MyBatis的环境

1. 在web项目中编写SqlMapConfig.xml的配置文件，编写核心配置文件（实际ssm项目中，该配置文件是不需要单独写的，在spring配置文件中就会将该文件里的内容配置上）

<?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>
    <environments default="mysql">
        <!-- 配置mysql的环境-->
        <environment id="mysql">
            <transactionManager type="JDBC"/>
            <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="123456"/>
            </dataSource>
        </environment>
    </environments>

    <!--告知mybatis映射配置的位置，这里mybatis映射使用的是注解-->
    <mappers>
        <package name="com.churujianghudezai.dao"/>
    </mappers>
</configuration>

2. 编写测试的方法

public class TestMybatis {

    /**
     * 查询测试
     */
    @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();
        //获得到代理对象
        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();
    }

    /**
     * 保存测试
     */
    @Test
    public void run2() throws Exception{
        Account account = new Account();
        account.setName("笨蛋");
        account.setMoney(200);

        //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();
        //获得到代理对象
        AccountDao dao = session.getMapper(AccountDao.class);
        //保存
        dao.saveAccount(account);
        //提交事务
        session.commit();
        //关闭资源
        session.close();
        in.close();
    }
}

 =================================================================

正文开始：

利用Spring框架整合Springmvc和Mybatis框架

1. 把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中（这就对应上面提到的不需要单独写SqlMapConfig.xml文件了）

<?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">

    <!--开启注解扫描器，要扫描的是service和dao层的注解，要忽略web层的注解，因为web层是由springmvc去管理的-->
    <context:component-scan base-package="com.churujianghudezai">
        <!--配置要忽略的注解-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--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="123456"/>
    </bean>
    <!--配置SqlSessionFactory工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置AccountDao接口所在包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.churujianghudezai.dao"/>
    </bean>

</beans>

2.在dao接口中加入@Repository注解，并在Service实现类中添加@Service("accountService")注解和实现调取dao层的功能

@Repository
public interface AccountDao {...}

=====================

@Service("accountService")
public class AccountServiceImp implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层：保存用户。。。");
        accountDao.saveAccount(account);
    }

    @Override
    public List<Account> findAll() {
        System.out.println("业务层：查询所有用户。。。");
        return accountDao.findAll() ;
    }
}

3.在控制器中装配service实现类对象，并添加save方法

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

    @Autowired
    private AccountService accountService;
    /**
     * 查询所有的数据
     */
    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("表现层：查询所有账户。。。");
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }

    @RequestMapping("/save")
    public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws Exception{
        System.out.println("表现层：保存账户信息。。。");
        accountService.saveAccount(account);
        /*response.sendRedirect(request.getContextPath()+"/account/findAll");*/
        request.getRequestDispatcher("findAll").forward(request,response);//注意地址书写的规范，/account/findAll或者account/findAll或/findAll都是错的
    }
}

4. 在index页面添加表单提交，list页面添加结果展示

<body>

<a href="account/findAll">查询所有</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="提交"/>
</form>

</body>

==============================

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

<body>
 
<h3>查询所有的帐户成功！ </h3> 
<c:forEach items="${list}" var="account"> ${account.name} </c:forEach> 

</body>

 测试：

 

 

 

一般在application.xml中可以加入spring框架声明式事务管理：

<!--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"/>
    </bean>

    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
　　　　　　　<!-- 所有用'find'开头的方法都是只读的 -->
            <tx:method name="find*" read-only="true"/>
　　　　　　　<!-- 其他的方法使用默认的事务配置 --/>
　　　　　　　<tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>

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