ssm整合

暴躁的程序猿

发布于 2022-03-24 16:08:31

4330

发布于 2022-03-24 16:08:31

SSM 整合（XML + 注解的方式）

整合的思路先搭建整合的环境先把Spring的配置搭建完成再使用Spring整合SpringMVC框架最后使用Spring整合MyBatis框架创建maven的工程 导入坐标

<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>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>

编写实体类

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

编写业务层接口

public interface AccountService {
/**
* 保存账户
* @param account
*/
void saveAccount(Account account);
/**
* 查询所有账户
* @return
*/
List<Account> findAllAccount();

编写持久层接口

保证 Spring 框架在 web 工程中独立运行

编写 spring 配置文件并导入约束

<?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">

    <!--开启注解的扫描，处理service和dao controller不需要spring处理-->
    <context:component-scan base-package="com.rpf">
        <!--配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    </beans>

使用注解配置业务层和持久层

@Service("accountService")
public class AccountServiceImpl implements AccountService {
     @Autowired
    private AccountDao accountDao;

/**
* 账户的持久层实现类
*/
@Repository("accountDao")
public class AccountDaoImpl implements AccountDao {

测试 spring

		ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
 		AccountService as = ac.getBean("accountService",AccountService.class);
		as.findAllAccount();

配置Springmvc

在 web.xml 中配置核心控制器（DispatcherServlet）

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
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>ssm_web</display-name>
			<!-- 配置 spring mvc 的核心控制器 -->
<servlet>
		<servlet-name>springmvcDispatcherServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置初始化参数，用于读取 springmvc 的配置文件 -->
<init-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!-- 配置 servlet 的对象的创建时间点：应用加载时创建。取值只能是非 0 正整数，表示启动顺
序 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
	<servlet-name>springmvcDispatcherServlet</servlet-name>
	<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 配置 springMVC 编码过滤器 -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<!-- 设置过滤器中的属性值 -->
<init-param>
	<param-name>encoding</param-name>
	<param-value>UTF-8</param-value>
</init-param>
<!-- 启动过滤器 -->
<init-param>
	<param-name>forceEncoding</param-name>
	<param-value>true</param-value>
</init-param>
</filter>
<!-- 过滤所有请求 -->
	<filter-mapping>
	<filter-name>CharacterEncodingFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

编写 SpringMVC 的配置文件

<?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">
    <!--开启注解扫描只扫Controller-->
        <context:component-scan base-package="com.rpf">
            <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        </context:component-scan>
    <!--配置视图解析器对象-->
 <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
     <property name="prefix" value="/WEB-INF/pages/"></property>
     <property name="suffix" value=".jsp"></property>
 </bean>
    <!-- 设置静态资源不过滤 -->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />
    <!--开启springmvc的注解支持-->
    <mvc:annotation-driven></mvc:annotation-driven>
</beans>

编写jsp和controller

<body>
<a href="account/findAllAccount">访问查询账户</a>
</body>

@Controller("accountController")
@RequestMapping("/account")
public class AccountController {
      @RequestMapping("/findAllAccount")
       public String findAllAccount() {
          System.out.println("执行了查询账户");
			return "success";
}

整合 Spring 和 SpringMVC

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）。

<!-- 配置Spring的监听器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listenerclass>
</listener>
<!-- 配置加载类路径的配置文件 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

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

Spring整合MyBatis框架 把SqlMapConfig.xml配置文件中的内容配置到applicationContext.xml配置文件中

<!--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>
       <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SqlSessionFactory工厂-->
   <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSource"></property>
   </bean>
    <!--配置AccountDao接口所在的包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.rpf.dao"></property>
    </bean>
    <!--配置spring的声明式事务管理-->
    <!-- 配置事务管理器  -->
   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
       <property name="dataSource" ref="dataSource"></property>
   </bean>
    <!-- 配置事务的通知  -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
                <!--以find打头的方法 只读   -->
            <tx:method name="find*" read-only="true"/>
            <!--除了以find打头的方法  isolation-->
            <tx:method name="*" isolation="DEFAULT"></tx:method>
        </tx:attributes>
    </tx:advice>
    <!--配置aop的增强  -->
    <aop:config>
                <!--  pointcut切入点表达式      -->
        <aop:advisor advice-ref="txAdvice" pointcut="execution( * com.rpf.service.impl.*ServiceImpl.*(..))"></aop:advisor>
    </aop:config>

在AccountDao接口的方法上添加注解，编写SQL语句

@Repository
public interface AccountDao  {
    /**
     * 查询所有
     * @return
     */
    @Select("select * from account")
    public List<Account> findAll();

在service中注入dao对象，进行测试

 @Autowired
    private AccountDao accountDao;
    public List<Account> findAll() {
        System.out.println("业务层:查询所有账户信息");
        return accountDao.findAll();
    }

本文参与腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。

原始发表：2021/01/30 ，如有侵权请联系 cloudcommunity@tencent.com 删除

xml