JavaWeb开发框架——SSM整合

企业开发 2023-06-19 05:05:35 阅读次数: 0

目录

1、原始方式整合

1.1、创建数据库

1.2、创建Maven工程

1.3、导入Maven坐标

1.4、编写实体类

1.5、编写Mapper接口

1.6、编写Service接口

1.7、编写Service接口实现

1.8、编写Controller

1.9、编写添加页面

1.10、编写列表页面

1.11、编写相应配置文件

1.12、测试添加账户

1.13、测试账户列表

2、Spring整合MyBatis

2.1、整合思路

2.2、将SqlSessionFactory配置到Spring容器中

1、原始方式整合

1.1、创建数据库

CREATE DATABASE `ssmdb` CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';
CREATE TABLE `ssmdb`.`account`  (
  `id` int(11) NOT NULL COMMENT '主键',
  `name` varchar(50) NULL COMMENT '名字',
  `account` double NULL COMMENT '金额',
  PRIMARY KEY (`id`)
);

1.2、创建Maven工程

1.3、导入Maven坐标

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.clp</groupId>
    <artifactId>SSM</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>SSM Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <!-- 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>

        <!-- 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>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>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>

    <build>
        <finalName>SSM</finalName>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>3.1.0</version>
                </plugin>
                <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>3.2.0</version>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.1</version>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.22.2</version>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.3.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.2</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

1.4、编写实体类

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

    public Integer getId() {
        return id;
    }

    public void setId(Integer 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;
    }
}

1.5、编写Mapper接口

public interface AccountMapper {
    /**
     * 保存
     * @param account
     */
    public void save(Account account);

    /**
     * 查询
     * @return
     */
    public List<Account> findAll();
}

1.6、编写Service接口

public interface AccountService {
    /**
     * 保存
     * @param account
     */
    public void save(Account account);

    /**
     * 查询
     * @return
     */
    public List<Account> findAll();
}

1.7、编写Service接口实现

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

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

1.8、编写Controller

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

    /**
     * 保存
     */
    @RequestMapping(value = "/save", produces = "text/html;charset=UTF-8")
    @ResponseBody
    public String save(Account account) {
        accountService.save(account);
        return "保存成功";
    }

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

1.9、编写添加页面

save.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加账户信息的表单</title>
</head>
<body>
    <h1>保存账户信息表单</h1>
    <form name="accountForm" action="${pageContext.request.contextPath}/account/save" method="post">
        用户名称<input type="text" name="name"><br />
        账户金额<input type="text" name="money"><br />
        <input type="submit" value="保存"><br />
    </form>
</body>
</html>

1.10、编写列表页面

accountList.jsp:

<%@ 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>
    <h1>展示账户数据列表</h1>
    <table>
        <tr>
            <th>账户id</th>
            <th>账户名称</th>
            <th>账户金额</th>
        </tr>

        <c:forEach items="${accountList}" var="account">
            <tr>
                <td>${account.id}</td>
                <td>${account.name}</td>
                <td>${account.money}</td>
            </tr>
        </c:forEach>
    </table>
</body>
</html>

1.11、编写相应配置文件

Spring配置文件：applicationContext.xml
SpringMVC配置文件：spring-mvc.xml
MyBatis映射文件：XxxMapper.xml
MyBatis核心文件：sqlMapConfig.xml
数据库连接信息文件：jdbc.properties
Web.xml文件：web.xml
日志文件：log4j.xml
jdbc.properties:

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmdb
jdbc.username=root
jdbc.password=123456
log4j.properties:

# direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{l}:%L - %m%n

# set log levels - for more verbose logging change 'info' to 'debug'
log4j.rootLogger=all, stdout
web.xml:

<?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">
    <!-- 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的前端控制器 -->
    <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>
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-3.2.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.2.xsd">

    <!-- 配置组件扫描 service 和 mapper -->
    <context:component-scan base-package="com.clp">
        <!-- 排除controller的扫描 -->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
</beans>
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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 组件扫描 主要扫描Controller -->
    <context:component-scan base-package="com.clp.controller" />

    <!-- 配置mvc的注解驱动 -->
    <mvc:annotation-driven />

    <!-- 配置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/pages/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 开放静态资源的访问权限 -->
    <mvc:default-servlet-handler />
</beans>
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.clp.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>
sqlMapConfig.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properties文件 -->
    <properties resource="jdbc.properties"/>

    <!-- 定义别名 -->
    <typeAliases>
        <!-- 方式1：直接定义别名 -->
        <!-- <typeAlias type="com.clp.domain.Account" alias="account" />-->

        <!-- 方式2：扫包 别名默认为首字母小写的实体名称-->
        <package name="com.clp.domain"/>
    </typeAliases>

    <!-- 配置环境 -->
    <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>

    <!-- 加载映射文件 -->
    <mappers>
        <!-- 方式1：一个一个加 -->
         <mapper resource="com.clp.mapper/AccountMapper.xml" />

        <!-- 方式2：扫包 -->
<!--        <package name="com.clp.mapper" />-->
    </mappers>
</configuration>

1.12、测试添加账户

浏览器输入：localhost:80/account/save，并输入用户名和金额，然后提交。

1.13、测试账户列表

浏览器输入：localhost:80/account/findAll。

2、Spring整合MyBatis

2.1、整合思路

将Session工厂交给Spring容器管理，从容器中获得执行操作的Mapper实例即可：

InputStream iStream = Resources.getResourceAsStream("sqlMapConfig.xml");
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(iStream);
SqlSession sqlSession = sqlSessionFactory.openSession();
AccountMapper accountMapper = sqlSession.getMapper(AccountMapper.class);

将事务的控制交给Spring容器进行声明式事务控制：

sqlSession.commit();
sqlSession.close();

2.2、将SqlSessionFactory配置到Spring容器中

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-3.2.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.2.xsd">

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

    <!-- spring 整合 mybatis -->
    <!-- 加载jdbc.properties -->
    <context:property-placeholder location="classpath:jdbc.properties" />
    <!-- 配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}" />
        <property name="jdbcUrl" value="${jdbc.url}" />
        <property name="user" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
    </bean>
    <!-- 配置MyBatis的SqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 加载mybatis核心配置文件 -->
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml" />
    </bean>
    <!-- 扫描mapper接口所在的包，用于为mapper创建实现类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.clp.mapper" />
    </bean>

    <!-- 声明式事务控制 -->
    <!-- 平台事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!-- 配置事务增强 -->
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="*" />
        </tx:attributes>
    </tx:advice>
    <!-- 事务的aop织入 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.clp.service.impl.*.*(..))" />
    </aop:config>
</beans>
sqlMapConfig-spring.xml(用来代替sqlMapConfig.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>

    <!-- 定义别名 -->
    <typeAliases>
        <!-- 方式1：直接定义别名 -->
        <!-- <typeAlias type="com.clp.domain.Account" alias="account" />-->

        <!-- 方式2：扫包 别名默认为首字母小写的实体名称-->
        <package name="com.clp.domain"/>
    </typeAliases>
</configuration>
@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Autowired
    protected AccountMapper accountMapper;

    @Override
    public void save(Account account) {
        accountMapper.save(account);
    }

    @Override
    public List<Account> findAll() {
        return accountMapper.findAll();
    }
}

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