SSM 框架快速搭建与整合
1、创建Maven项目并导入依赖
在 IDEA 中创建一个空的 Maven 项目
添加 WEB 项目支持
1.1、导入 SSM 环境相关依赖
pom.xml 相关代码如下:
<dependencies>
<!--Junit-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<!--数据库驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<!--数据库连接池-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>
<!--Servlet - 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>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<!--Spring-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
</dependencies>
1.2、防止静态资源导出失败
在 pom.xml 中继续增加以下代码:
<!-- 在bulid中配置resources,防止资源导出失败问题 -->
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
到此为止,Maven 环境已经搭建完毕
1.3、添加 lib 依赖到 WEB 项目中
在 Project Structure 中,创建 lib 目录
同时添加并选中 Maven 中的依赖!
ps:这一步很重要,一旦忘记配置的话后面项目就跑不起来!!!
1.4、创建各个包
项目的结构如下:
有 4 个包,分别为 controller, dao, pojo, service
pojo 为实体类,dao 为数据库层, service 为业务层, controller 为前端控制器
resource 下有 5 个 xml 文件以及 1 个 properties 文件:
applicationContext 负责整合 spring-dao, spring-mvc, spring-service
database.properties 为数据库配置文件,后续在 mybatis 的数据库连接池中读入
2、Mybatis 模块搭建
2.1、创建数据库表
这里创建一个订单表
use `mybatis`;
drop table if exists `order`;
/*==============================================================*/
/* Table: "order" */
/*==============================================================*/
create table `order`
(
`orderId` int(10) not null auto_increment comment '订单Id',
`orderType` varchar(10) not null comment '订单类型',
`money` double not null comment '订单交易金额',
`orderRemark` varchar(100) not null comment '订单备注',
primary key (orderId)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
alter table `order` comment '订单实体类';
insert into `order` (`orderId`,`orderType`,`money`,`orderRemark`) values
(1,'买入','100.00','买入5个冰淇淋'),
(2,'卖出','250.00','卖出10个冰淇淋'),
(3,'买入','150.00','买入15个大蛋糕')
2.2、编写 database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?useSSL=false&useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=123456
2.3、编写 mybatis-config.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>
<typeAliases>
<package name="com.ssm.pojo"/>
</typeAliases>
</configuration>
2.4、编写 spring-dao.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"
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">
<context:property-placeholder location="classpath:database.properties"/>
<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}"/>
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<property name="autoCommitOnClose" value="false"/>
<property name="checkoutTimeout" value="10000"/>
<property name="acquireIncrement" value="2"/>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<property name="basePackage" value="com.ssm.dao"/>
</bean>
</beans>
2.5、编写 pojo 实体类
要生成 getter , setter 以及构造方法。
public class Order {
private int orderId;
private String orderType;
private double money;
private String orderRemark;
}
2.6、编写 dao 接口 及 Mapper
OrderMapper
public interface OrderMapper {
int addOrder(Order order);
int deleteOrder(@Param("orderId") int id);
Order queryOrderById(@Param("orderId") int id);
List<Order> queryAllOrders();
}
OrderMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ssm.dao.OrderMapper">
<insert id="addOrder" parameterType="Order">
insert into mybatis.order (orderType,money,orderRemark)
values (#{orderType},#{money},#{orderRemark})
</insert>
<delete id="deleteOrder" parameterType="int">
delete from mybatis.order where orderId = #{orderId}
</delete>
<select id="queryOrderById" parameterType="int" resultType="Order">
select * from mybatis.order where orderId = #{orderId}
</select>
<select id="queryAllOrders" resultType="Order">
select * from mybatis.order;
</select>
</mapper>
2.7、编写 service 接口及 实现类
OrderService
public interface OrderService {
int addOrder(Order order);
int deleteOrder(int id);
Order queryOrderById(int id);
List<Order> queryAllOrders();
}
OrderServiceImpl
public class OrderServiceImpl implements OrderService {
private OrderMapper orderMapper;
public void setOrderMapper(OrderMapper orderMapper) {
this.orderMapper = orderMapper;
}
public int addOrder(Order order) {
return orderMapper.addOrder(order);
}
public int deleteOrder(int id) {
return orderMapper.deleteOrder(id);
}
public Order queryOrderById(int id) {
return orderMapper.queryOrderById(id);
}
public List<Order> queryAllOrders() {
return orderMapper.queryAllOrders();
}
}
至此,Mybatis 模块基本完成。
3、Mybatis 整合 Spring
3.1、添加到同一个 ApplicationContext 下
3.2、编写 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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
</beans>
3.3、编写 spring-service.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.ssm.service"/>
<bean id="OrderServiceImpl" class="com.ssm.service.OrderServiceImpl">
<property name="orderMapper" ref="orderMapper"/>
</bean>
<bean id = "transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref = "dataSource"/>
</bean>
</beans>
至此, Mybatis 与 Spring 的整合完成。
4、整合 Spring MVC
4.1、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">
<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:applicationContext.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>
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
4.2、编写 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
https://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">
<mvc:annotation-driven/>
<mvc:default-servlet-handler/>
<context:component-scan base-package="com.ssm.controller"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
4.3、整合 spring-mvc.xml
在 applicationContext 下,导入 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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
<import resource="classpath:spring-dao.xml"/>
<import resource="classpath:spring-service.xml"/>
<import resource="classpath:spring-mvc.xml"/>
</beans>
5、测试 CRUD
在 test 目录下新建一个类用于单元测试
public class DaoTest {
@Test
public void test() {
ApplicationContext cpx = new ClassPathXmlApplicationContext("applicationContext.xml");
OrderService orderService = (OrderService) cpx.getBean("OrderServiceImpl");
List<Order> orderList = orderService.queryAllOrders();
for (Order order : orderList) {
System.out.println(order);
}
}
}
测试成功:
其他几个功能也是类似的,只要能够跑通其中一个,基本上问题不大。
以上就是 SSM 环境的基本搭建过程,Spring MVC 后面再说。
6、Spring MVC 测试
6.1、部署Tomcat
6.2、前后端请求测试
后端返回数据
@Controller
@RequestMapping("/order")
public class OrderController {
@Autowired
private OrderService orderService;
@RequestMapping("/allOrder")
public String getAllOrder(Model model){
List<Order> orderList = orderService.queryAllOrders();
model.addAttribute("orderList",orderList);
return "main";
}
}
前端发送请求
<a href="${pageContext.request.contextPath}/order/allOrder">跳转到首页</a>
前端获取数据
<c:forEach var="order" items="${orderList}">
<tr>
<td>${order.orderId}</td>
<td>${order.orderType}</td>
<td>${order.money}</td>
<td>${order.orderRemark}</td>
</tr>
</c:forEach>
6.3、运行结果
以上结果说明 Spring MVC 运行环境没问题。
至此,SSM 环境搭建完毕。
本文地址:https://blog.csdn.net/qq_45716120/article/details/111771362