准备工作
1、创建Maven Module
2、导入依赖
<?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.jerry.ssm</groupId> <artifactId>ssm</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> <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> <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的整合包--> <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驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.27</version> </dependency> <!-- log4j日志 --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper --> <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>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.12.1</version> </dependency> <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> </project>
3、添加web模块
4、建库建表
CREATE DATABASE ssm; USE ssm; CREATE TABLE `t_emp` ( `emp_id` INT(11) NOT NULL AUTO_INCREMENT, `emp_name` VARCHAR(20) DEFAULT NULL, `age` INT(11) DEFAULT NULL, `sex` CHAR(1) DEFAULT NULL, `email` VARCHAR(50) DEFAULT NULL, PRIMARY KEY (`emp_id`) ) ENGINE=INNODB DEFAULT CHARSET=utf8
5、配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" version="4.0"> <!-- 配置Spring的编码过滤器 --> <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>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置处理请求方式PUT和DELETE的过滤器 --> <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> <!-- 配置SpringMVC的前端控制器 --> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 设置SpringMVC的配置文件的位置和名称 --> <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> <!-- 设置Spring的配置文件的位置和名称 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:Spring.xml</param-value> </context-param> <!-- 配置Spring的监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
6、创建并配置 SpringMVC.xml文件
SpringMVC 管理 controller层,因此先创建EmployeeController.java
创建 SpringMVC.xml
配置SpringMVC.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"> <!--扫描控制层组件--> <context:component-scan base-package="com.jerry.ssm.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> <!-- 配置访问首页的视图控制 --> <mvc:view-controller path="/" view-name="index"></mvc:view-controller> <!-- 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 /> <!-- 配置文件上传解析器--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean> </beans>
在【WEB-INF】下新建【templates目录】–>【index.html】
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>首页</title> </head> <body> <h1>index.html</h1> </body> </html>
7、导入Tomcat服务器
启动tomcat 会跳转到首页
8、创建并配置Spring.xml文件
Spring 管理 service 层,因此先创建EmployeeService.java
创建EmployeeServiceImpl.java
创建属性文件jdbc.properties
jdbc.username=root jdbc.password=root jdbc.url=jdbc:mysql://localhost:3306/ssm?serverTimezone=UTC jdbc.driver=com.mysql.cj.jdbc.Driver
配置Spring.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: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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> <!--扫描组件,除控制层--> <context:component-scan base-package="com.jerry.ssm"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 引入jdbc.properties --> <context:property-placeholder location="classpath:jdbc.properties"></context:property-placeholder> <!-- 配置Druid数据源 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="${jdbc.driver}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${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> <!-- 开启事务的注解驱动 将使用注解@Transactional标识的方法或类中所有的方法进行事务管理 --> <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven> <!-- 配置用于创建SqlSessionFactory的工厂bean,可以直接在Spring的IOC 中获取 SqlSessionFactory--> <bean class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 设置MyBatis配置文件的路径(可以不设置) --> <property name="configLocation" value="classpath:mybatis-config.xml"></property> <!-- 设置数据源 --> <property name="dataSource" ref="dataSource"></property> <!-- 设置类型别名所对应的包 --> <property name="typeAliasesPackage" value="com.jerry.ssm.pojo"></property> <!--设置映射文件的路径若映射文件所在路径和mapper接口所在路径一致,则不需要设置--> <!--<property name="mapperLocations" value="classpath:mapper/*.xml"></property>--> </bean> <!-- 配置mapper接口的扫描配置由mybatis-spring提供,可以将指定包下所有的mapper接口创建动态代理并将这些动态代理作为IOC容器的bean管理--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.jerry.ssm.mapper"></property> </bean> </beans>
在Service层上开启事务注解@Transactional
9、创建MyBatis的mapper接口并配置映射文件
接口
映射文件
10、创建并配置MyBatis的核心配置文件mybatis-config.xml
可以先创建一下pojo实体类
配置mybatis-config.xml文件
<?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> <settings> <!--将下划线映射为驼峰--> <setting name="mapUnderscoreToCamelCase" value="true"/> </settings> <plugins> <!--配置分页插件--> <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin> </plugins> </configuration>
CRUD
EmployeeController
package com.jerry.ssm.controller; import com.github.pagehelper.PageInfo; import com.jerry.ssm.pojo.Employee; import com.jerry.ssm.service.EmployeeService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import java.util.List; /** * ClassName: EmployeeController * Package: com.jerry.ssm.controller * Description: * 查询所有的员工信息-->/employee-->get * 查询员工的分页信息-->/employee/page/1-->get * 根据id查询员工信息-->/employee/1-->get * 跳转到添加页面-->/to/add --> get * 添加员工信息-->/employee-->post * 修改员工信息-->/employee-->put * 删除员工信息-->/employee-->delete * * @Author jerry_jy * @Create 2023-02-10 20:19 * @Version 1.0 */ @Controller public class EmployeeController { @Autowired private EmployeeService employeeService; @RequestMapping(value = "/employee/{id}",method = RequestMethod.GET) public String selectEmployeeInfoById(@PathVariable("id") Integer id, Model model) { //根据id查询员工信息 Employee employee = employeeService.selectEmployeeInfoById(id); //将员工信息放在请求域中共享 model.addAttribute("employee",employee); //跳转到employee_list.html return "employee_select"; } @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); //将分页数据共享在请求域中 model.addAttribute("page", page); //跳转到employee_list.html return "employee_page"; } @RequestMapping(value = "/employee", method = RequestMethod.GET) public String getAllEmployee(Model model) { //查询所有员工信息 List<Employee> list = employeeService.getAllEmployee(); //将员工信息放在请求域中共享 model.addAttribute("list", list); //跳转到employee_list.html return "employee_list"; } }
EmployeeService
package com.jerry.ssm.service; import com.github.pagehelper.PageInfo; import com.jerry.ssm.pojo.Employee; import java.util.List; /** * ClassName: EmployeeService * Package: com.jerry.ssm.service * Description: * * @Author jerry_jy * @Create 2023-02-11 9:35 * @Version 1.0 */ public interface EmployeeService { /** * 查询所有员工信息 * @return */ List<Employee> getAllEmployee(); /** * 获取员工的分页信息 * @param pageNum * @return */ PageInfo<Employee> getEmployeePage(Integer pageNum); /** * 根据id查询员工信息 * @return */ Employee selectEmployeeInfoById(Integer id); }
EmployeeServiceImpl
package com.jerry.ssm.service.impl; import com.github.pagehelper.PageHelper; import com.github.pagehelper.PageInfo; import com.jerry.ssm.mapper.EmployeeMapper; import com.jerry.ssm.pojo.Employee; import com.jerry.ssm.service.EmployeeService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import java.util.List; /** * ClassName: EmployeeServiceImpl * Package: com.jerry.ssm.service.impl * Description: * * @Author jerry_jy * @Create 2023-02-11 9:36 * @Version 1.0 */ @Service @Transactional public class EmployeeServiceImpl implements EmployeeService { @Autowired private EmployeeMapper employeeMapper; @Override public List<Employee> getAllEmployee() { return employeeMapper.getAllEmployee(); } @Override public PageInfo<Employee> getEmployeePage(Integer pageNum) { //开启分页功能 PageHelper.startPage(pageNum, 5); //查询所有的员工信息 List<Employee> list = employeeMapper.getAllEmployee(); //获取分页相关数据 PageInfo<Employee> pageInfo = new PageInfo<>(list, 5); return pageInfo; } @Override public Employee selectEmployeeInfoById(Integer id) { return employeeMapper.selectEmployeeInfoById(id); } }
EmployeeMapper
package com.jerry.ssm.mapper; import com.jerry.ssm.pojo.Employee; import org.apache.ibatis.annotations.Param; import java.util.List; /** * ClassName: EmployeeMapper * Package: com.jerry.ssm.mapper * Description: * * @Author jerry_jy * @Create 2023-02-11 10:07 * @Version 1.0 */ public interface EmployeeMapper { /** * 查询所有员工信息 * @return */ List<Employee> getAllEmployee(); /** * 根据id查询员工信息 * @return */ Employee selectEmployeeInfoById(@Param("id") Integer id); }
EmployeeMapper.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.jerry.ssm.mapper.EmployeeMapper"> <select id="getAllEmployee" resultType="com.jerry.ssm.pojo.Employee"> select * from t_emp </select> <select id="selectEmployeeInfoById" resultType="com.jerry.ssm.pojo.Employee"> select * from t_emp where emp_id = #{id} </select> </mapper>
实际效果图
首页
http://localhost:8080/ssm/
查询所有的员工信息
http://localhost:8080/ssm/employee
查询员工的分页信息
http://localhost:8080/ssm/employee/page/1
网络异常,图片无法展示
|
根据id查询员工信息
http://localhost:8080/ssm/employee/2
网络异常,图片无法展示
|
Gitee项目托管
https://gitee.com/jinyang-jy/ssm.git
–end–