SSM整合


    <!--自定义属性，管理版本号-->
    <properties>
        <spring.version>5.3.1</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${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>

        <!--spring-jdbc:事务管理器在jdbc中-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

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

        <!--Mybatis核心-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.7</version>
        </dependency>
        <!--mybatis和spring整合包-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>

        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.9</version>
        </dependency>
        <!--junit测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <!--mysql的驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.33</version>
        </dependency>

        <!--log4j日志-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!--分页插件-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>5.2.0</version>
        </dependency>

        <!--日志-->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>

        <!--ServletApi-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

        <!--处理json数据依赖-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.12.1</version>
        </dependency>
        <!--文件上传依赖-->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!--spring5和thymeleaf整合包-->
        <dependency>
            <groupId>org.thymeleaf</groupId>
            <artifactId>thymeleaf-spring5</artifactId>
            <version>3.0.12.RELEASE</version>
        </dependency>
    </dependencies>

2.配置web.xml

  <!--配置编码过滤器-->
    <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>
        <init-param>
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--配置请求方式的编码-->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!--springmvc前端控制器-->
    <servlet>
        <servlet-name>SpringMVC</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>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--配置spring的监听器，在服务器启动时加载spring的配置-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>


    <!--设置spring配置文件的自定义的位置和名称-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>

3.配置自定义的springmvc.xml

拦截器和异常处理器可以根据需求配置

 <!--扫描组件-->
    <context:component-scan base-package="com.xz.controller"></context:component-scan>

    <!--配置视图解析器-->
    <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
        <property name="order" value="1"/>
        <property name="characterEncoding" value="UTF-8"/>
        <property name="templateEngine">
            <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
                <property name="templateResolver">
                    <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
                        <!-- 视图前缀 -->
                        <property name="prefix" value="/WEB-INF/templates/"/>
                        <!-- 视图后缀 -->
                        <property name="suffix" value=".html"/>
                        <property name="templateMode" value="HTML5"/>
                        <property name="characterEncoding" value="UTF-8"/>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>


    <!--配置默认的servlet处理静态资源-->
    <mvc:default-servlet-handler/>

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


    <!--视图控制器-->
    <mvc:view-controller path="/" view-name="index"></mvc:view-controller>


    <!--配置文件上传解析器-->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>

    <!--异常处理器(看需求)-->

    <!--拦截器(看需求)-->

4.spring配置文件

spring整合mybatis

 <!--组件扫描(除控制层)-->
    <context:component-scan base-package="com.xz">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

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

    <!--配置数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="url" value="${jdbc.url}"></property>
        <property name="driverClassName" value="${jdbc.driver}"></property>
        <property name="username" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

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

    <!--开启注解驱动-->
    <tx:annotation-driven transaction-manager="transactionManager"/>


    <!--配置SqlSessionFactoryBean，可以直接在spring的ioc容器中获取SqlSessionFactory-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--设置是Mybatis核心配置文件的路径-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!--引入数据源-->
        <property name="dataSource" ref="dataSource"></property>
        <!--设置类型别名所对应的包-->
        <property name="typeAliasesPackage" value="com.xz.pojo"></property>

        <!--设置映射文件，只有映射文件和mapper接口的包不一致时才需要配置-->
        <!--<property name="mapperLocations" value="classpath:"></property>-->
    </bean>

    <!--配置Mapper的扫描,将指定包下所有的mapper接口,
    通过sqlSession创建代理实现类对象,并将这些对象交给IOC管理-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.xz.mapper"></property>
    </bean>

5. mybatis-config

未用spring整合的插件

    <!--将下划线映射为驼峰-->
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>

    <!--分页插件-->
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
    </plugins>

6. 测试

只测试分页功能

6.1controller

@Controller
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @RequestMapping(value = "/employee/page/{pageNum}",method = RequestMethod.GET)
    public String getEmployeePage(@PathVariable("pageNum") Integer pageNum,Model model) {
        //获取员工的分页信息
        PageInfo<Employee> page=employeeService.getEmployeePage(pageNum);

        //将分页数据共享到请求域中
        model.addAttribute("page",page);

        return "employee";
    }
}

6.2Service

@Service
@Transactional
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    @Override
    public PageInfo<Employee> getEmployeePage(Integer pageNum) {
        //开启分页功能
        PageHelper.startPage(pageNum, 2);
        //查询所有员工信息
        List<Employee> list= employeeMapper.getAllEmployee();

        //获取分页相关数据
        PageInfo<Employee> page=new PageInfo<>(list,3);
        return page;
    }
}

6.3Dao

public interface EmployeeMapper {

    List<Employee> getAllEmployee();
}

6.4跳转的页面

<table border="1" cellpadding="0" cellspacing="0" style="text-align: center;" id="dataTable">
    <tr>
        <th colspan="6">员工信息</th>
    </tr>
    <tr>
        <th>流水号</th>
        <th>员工姓名</th>
        <th>年龄</th>
        <th>性别</th>
        <th>邮箱</th>
        <th>操作</th>
    </tr>
    <tr th:each="employee,status:${page.list}">
        <td th:text="${status.count}"></td>
        <td th:text="${employee.empName}"></td>
        <td th:text="${employee.age}"></td>
        <td th:text="${employee.sex}"></td>
        <td th:text="${employee.email}"></td>
        <td>
            <a th:href="@{'/employee/'+${employee.empId}}">删除</a>
            <a th:href="@{'/employee/'+${employee.empId}}">修改</a>
        </td>
    </tr>
</table>
<div style="text-align: left">
    <a th:if="${page.hasPreviousPage}" th:href="@{/employee/page/1}">首页</a>
    <a th:if="${page.hasPreviousPage}" th:href="@{'/employee/page/'+${page.prePage}}">上一页</a>
    <span th:each="num:${page.navigatepageNums}">
    <a th:href="@{'/employee/page/'+${num}}" th:text="${num}"></a>
   </span>
    <a th:if="${page.hasNextPage}" th:href="@{'/employee/page/'+${page.nextPage}}">下一页</a>
    <a th:if="${page.hasNextPage}" th:href="@{'/employee/page/'+${page.pages}}">尾页</a>
</div>