SSM框架整合(xml配置)

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兮动人 发表于 2022/04/30 11:44:37 2022/04/30
【摘要】 1. 原始方式整合 2. 创建 Maven 工程 3. 编写实体类 4. 编写 Mapper 接口 5. 编写 Service 接口 6. 编写 Service 接口实现 7. 编写 Controller 8. 编写添加页面 9. 编写列表页面 10. 编写响应的配置文件 10.1 jdbc.properties 10.2 sqlMapperConfig.xml 10.3 AccountM...

1. 原始方式整合

CREATE DATABASES ssm;

CREATE TABLE account(
	id int PRIMARY KEY auto_increment,
	name VARCHAR(10),
	money DOUBLE(7,2) 
);

2. 创建 Maven 工程

在这里插入图片描述

  • 导入坐标
<dependencies>
        <!--spring相关-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.7</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>

        <!--servlet和jsp-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--mybatis相关-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.30</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

3. 编写实体类

public class Account {
    private Integer id;
    private String name;
    private Double money;
}

4. 编写 Mapper 接口

public interface AccountMapper {
    //保存账户数据
    void save(Account account);
    //查询账户数据
    List<Account> findAll();
}

5. 编写 Service 接口

public interface AccountService {
    void save(Account account);
    List<Account> findAll();
}

6. 编写 Service 接口实现

@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Override
    public void save(Account account)  {
        try {
            InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapperConfig.xml");
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
            SqlSession sqlSession = sqlSessionFactory.openSession();
            AccountMapper accountMapper = sqlSession.getMapper(AccountMapper.class);
            accountMapper.save(account);
            sqlSession.commit();
            sqlSession.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public List<Account> findAll() {
        List<Account> accountList = null;
        try {
            InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapperConfig.xml");
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
            SqlSession sqlSession = sqlSessionFactory.openSession();
            AccountMapper accountMapper = sqlSession.getMapper(AccountMapper.class);
            accountList = accountMapper.findAll();
            sqlSession.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return accountList;
    }
}

7. 编写 Controller

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private AccountService accountService;

    // produces：设置响应数据的编码格式
    @RequestMapping(value = "/save", produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String save(Account account) throws IOException {
        accountService.save(account);
        return "save success";
    }

    @RequestMapping("/findAll")
    public ModelAndView findAll() throws IOException {
        List<Account> accountList = accountService.findAll();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("accountList");
        modelAndView.addObject("accountList", accountList);
        return modelAndView;
    }
}

8. 编写添加页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>保存订单信息</h1>
    <form action="${pageContext.request.contextPath}/account/save" method="post" name="accountForm">
        用户名称：<input type="text" name="name"><br>
        用户金额：<input type="text" name="money"><br>
        <input type="submit" value="保存"><br>
    </form>
</body>
</html>

9. 编写列表页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<html>
<head>
    <title>展示账户数据列表</title>
</head>
<body>
    <table border="1">
        <tr>
            <th>账户id</th>
            <th>账户名称</th>
            <th>账户金额</th>
        </tr>
        <c:forEach items="${accountList}" var="account">
            <tr>
                <th>${account.id}</th>
                <th>${account.name}</th>
                <th>${account.money}</th>
            </tr>
        </c:forEach>
    </table>
</body>
</html>

10. 编写响应的配置文件

10.1 jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=1234

10.2 sqlMapperConfig.xml

<?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>

    <!--加载外部properties-->
    <properties resource="jdbc.properties"></properties>

    <!--定义别名-->
    <typeAliases>
        <typeAlias type="com.xdr630.domain.Account" alias="account"/>
        <!--或者，扫包，包下的实体都会定义别名为 类名小写开头的类名 -->
        <!--<package name="com.xdr630.domain"/>-->
    </typeAliases>

    <!--数据源的环境-->
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <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>

    <!--加载映射关系-->
    <mappers>
        <mapper resource="com/xdr630/mapper/AccountMapper.xml"></mapper>
        <!--或者，指定接口所在的包，就会自动加载-->
        <!-- <package name="com.xdr630.mapper"/>-->
    </mappers>

</configuration>

10.3 AccountMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.xdr630.mapper.AccountMapper">
    <insert id="save" parameterType="account">
        insert into account values(#{id},#{name},#{money})
    </insert>
    
    <select id="findAll" resultType="account">
        select * from account
    </select>
</mapper>

10.4 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/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
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
">


    <!--组件扫描，扫描 mapper 和 service-->
    <context:component-scan base-package="com.xdr630">
        <!--排除controller的扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>

</beans>

10.5 spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
      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/context http://www.springframework.org/schema/context/spring-context.xsd
      http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd

">

   <!--组件扫描，主要扫描 controller-->
   <context:component-scan base-package="com.xdr630.controller"/>
   <!--配置mvc注解驱动-->
   <mvc:annotation-driven></mvc:annotation-driven>
   <!--内部资源视图解析器-->
   <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       <property name="prefix" value="/WEB-INF/page/"></property>
       <property name="suffix" value=".jsp"></property>
   </bean>
   <!--开放静态资源访问权限，静态资源无法被解析-->
   <mvc:default-servlet-handler></mvc:default-servlet-handler>
</beans>

10.6 web.xml

<?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">

<!--Spring监听器-->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!--SpringMVC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:spring-mvc.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>

<!--乱码过滤器-->
<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>

11. 测试：添加账户

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12. 测试：查看账户列表

在这里插入图片描述

13. 优化：Spring 整合 Mybatis

在这里插入图片描述

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  1. 将 SQLSessionFactory 配置到Spring容器中
  • 在Spring 核心配置文件中applicationContext.xml，新增配置 数据源信息 、 SQLSessionFactory 配置中、扫描包
<?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/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
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
">


    <!--组件扫描，扫描 mapper 和 service-->
    <context:component-scan base-package="com.xdr630">
        <!--排除controller的扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
    </context:component-scan>



    <!--加载properties文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--配置数据源信息-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--配置SQLSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--加载 mybatis 核心文件-->
        <property name="configLocation" value="classpath:sqlMapperConfig-spring.xml"></property>
    </bean>

    <!--扫描mapper所在的包，为 mapper 创建实现类-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.xdr630.mapper"></property>
    </bean>
    
</beans>
  • 复制 sqlMapperConfig.xml 名为 sqlMapperConfig-spring.xml ，sqlMapperConfig-spring配置如下：
<!--定义别名-->
<typeAliases>
    <typeAlias type="com.xdr630.domain.Account" alias="account"/>
    <!--或者，扫包，包下的实体都会定义别名为 类名小写开头的类名 -->
    <!--<package name="com.xdr630.domain"/>-->
</typeAliases>
  1. Spring 核心配置文件 applicationContext.xml 添加事物控制管理
<!--声明事物控制-->
<!--平台事物管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"></property>
</bean>

<!--配置事物增强-->
<tx:advice id="txAdvice">
    <tx:attributes>
        <tx:method name="*"/>
    </tx:attributes>
</tx:advice>

<!--事物aop的织入-->
<aop:config>
    <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.xdr630.service.impl.*.*(..))"></aop:advisor>
</aop:config>

14. 添加数据后跳转到列表页面

  • 在 AccountController 修改如下，添加数据后重定向到请求列表的路径
    在这里插入图片描述
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