SSM（spring,springmvc,mybatis）的整合（超詳細）

首先貼下我的整個項目源碼（其實下面已經全部都貼出來了，只不過需要整合一下）
https://download.csdn.net/download/cd546566850/12146018
一、使用的工具和整合原理
1、使用的工具：IDEA2018 + Maven
2、整合原理：SSM的整合其實是spring整合springmvc、spring整合mybatis 兩步完成
二、前期的環境搭建
1、創建數據庫（我的是直接用navicat工具創建的）

2、創建一個maven構建的WEB工程
3、在pom.xml中導入依賴（根據你項目的需要導入，這裏給出我的，僅供參考）
注：沒特別標明的都是必須要導入的

<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>
    
    <!--寫xxx.version原因是怕以後版本更新，方便修改-->
    <spring.version>5.0.2.RELEASE</spring.version>
    <mybatis.version>3.4.5</mybatis.version>
    <mysql.version>5.1.6</mysql.version>
    <log4j.version>1.2.12</log4j.version>
    <slf4j.version>1.6.6</slf4j.version>
  </properties>

  <dependencies>

    <!--spring所需的依賴-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--AOP-->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.2</version>
    </dependency>

    <!--spring的事務管理-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--如果不寫測試的話，可以不需要導入-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--spring-java,如：DataSourceTransactionManager的使用-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--springmvc-->
    <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>

    <!--servlet-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>

    <!--jsp-->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>

    <!--mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>

    <!--spring整合mybatis所需的依賴-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <!--數據庫連接池-->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>

    <!--數據庫-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>

    <!--jsp的標準標籤庫，用於在jsp中編寫java代碼-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!--測試-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>

    <!--配置日誌的依賴-->
    <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>

  </dependencies>

4、創建基本的目錄結構
1）、在src-main的目錄下創建源碼根目錄 java,和資源根目錄 resources，創建了後右鍵Mark Directory as，java就選sources root, resources就選 resources root
2）、在java和resources目錄下創建如下目錄結構

三、spring整合springmvc
1、搭建spring所需的環境（這裏包含所有的，包括整合mybatis裏面的）
1）、配置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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--配置spring創建容器時應該掃描的包，但是Controller層不需要spring管理，應該過濾掉-->
    <context:component-scan base-package="com.ssm">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>

    <!--spring整合mybatis的配置-->

    <!--配置數據源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/ssm"></property>
        <property name="user" value="root"></property>
        <property name="password" value="123456"></property>
    </bean>

    <!--配置要掃描的包-->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ssm.dao"></property>
    </bean>

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

    <!--spring中基於XML的聲明式事務控制的配置-->

    <!--配置事務管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>

    <!--配置事務的通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true" propagation="SUPPORTS"/>
            <tx:method name="*" read-only="false" propagation="REQUIRED"></tx:method>
        </tx:attributes>
    </tx:advice>

    <!--配置AOP-->
    <aop:config>
        <!--配置切入點表達式-->
        <aop:pointcut id="pt" expression="execution(* com.ssm.service.impl.*.*(..))"></aop:pointcut>
        <!--建立事務通知與切入點表達式的關係-->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pt"></aop:advisor>
    </aop:config>

</beans>

2、配置springmvc所需的環境
1)、配置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">

    <!--配置掃描controller的註解，service和dao層的不掃描-->
    <context:component-scan base-package="com.ssm">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:include-filter>
    </context:component-scan>

    <!--配置視圖解析器-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--配置靜態資源不攔截-->
    <mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
    <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
    <mvc:resources mapping="/images/**" location="/images/"></mvc:resources>

    <!--開啓spring對註解mvc的支持-->
    <mvc:annotation-driven></mvc:annotation-driven>


</beans>

2)、配置web.xml

注意事項：配置時要注意web.xml文件裏面的約束version是否跟你在pom.xml裏配置的servlet版本一致，這裏給出一個地址，這裏有常見版本的約束：
https://blog.csdn.net/jinbaizhe/article/details/81175586

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
         http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         version="2.5">

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

  <!--spring整合springmvc的配置-->

  <!--配置springde監聽器，使在服務器啓動創建ServletContext域對象時加載applicationContext.xml文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--由於該監聽器只能加載WEB-INF目錄下的applicationContext.xml的配置文，所以需要知道路徑 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:applicationContext.xml</param-value>
  </context-param>

  <!--配置前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:springmvc.xml</param-value>
    </init-param>

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

  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--配置解決中文亂碼問題的過濾器-->
  <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>

四、spring整合mybatis
1、配置mybatis所需的環境
也是在applicationContext.xml配置文件中(上面已給出)：如下：

2、配置log4j.properties

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=debug, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

至此SSM的整合所需要的的所有的環境就搭建好了

=================================================
以下就是測試SSM是否整合成功的代碼：
即: controller層能夠調用service層、service層能夠調用dao層
代碼示例：

1、Controller層

/**
 * 賬戶的表現層
 */
@Controller
@RequestMapping("/account")
public class AccountController{

    @Autowired
    private IAccountService accountService;

    //查詢所有賬戶
    @RequestMapping("/findAll")
    public String findAll(Model model){
        System.out.println("findAll方法執行了...");
        //調用service方法
        List<Account> accounts = accountService.findAll();
        model.addAttribute("accounts",accounts);
        for (Account account : accounts) {
            System.out.println(account);
        }
        return "success";
    }

    //保存賬戶
    @RequestMapping("/saveAccount")
    public String saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("saveAccount方法執行了...");
        //調用service方法
        accountService.saveAccount(account);

        //重定向到查詢的controller
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return "success";
    }


}

2、dao層


/**
 * 賬戶的持久層接口
 */
@Repository
public interface IAccountDao {

    //查詢所有賬戶
    @Select("select * from account")
    public List<Account> findAll();

    //保存賬戶
    @Insert("insert into account(name,money) values(#{name},#{money})")
    public void saveAccount(Account account);
}

3、service層
1)、IAccountService.java

public interface IAccountService {

    //查詢所有賬戶
    public List<Account> findAll();

    //保存賬戶
    public void saveAccount(Account account);
}

2）、AccountServiceImpl.java

/**
 * 賬戶的業務層的實現層，調用dao層
 */
@Service("accountService")
public class AccountServiceImpl implements IAccountService {

    @Autowired
    private IAccountDao accountDao;

    @Override
    public List<Account> findAll() {
        System.out.println("findAll方法執行了");
        List<Account> accounts = accountDao.findAll();
        return accounts;
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("saveAccount方法執行了");
        accountDao.saveAccount(account);
    }
}

4、index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>index</title>
</head>
<body>
    <h3>測試springmvc框架是否搭建成成功</h3>

    <a href="account/findAll">查詢所有賬戶</a>

    <br>
    <br>

    <h3>保存賬戶</h3>
    <form action="account/saveAccount" method="post">
        姓名：<input type="text" name="name"></br>
        金額：<input type="text" name="money"></br>
        <input type="submit" value="保存">
    </form>

</body>
</html>

5、success.jsp(我的success.jsp放在WEB-INF目錄下的pages目錄下)
即：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h3>執行成功</h3>

    <br>
    <br>

    <c:forEach items="${accounts}" var="account">
        ${account.toString()}
    </c:forEach>

</body>
</html>

寫到這裏就全部都結束了，直接把項目部署到服務器下就可以運行了

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