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SSM框架

君之言之 2022-03-17 阅读 28

文章目录

SSM框架整合

两个IoC容器

  • MVC容器

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    SpringMVC+JSON

    DispatcherServlet类: Servlet

  • 业务容器

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    Spring+mybatis

    监听器: SevletContextListener

  • 日志+lombok等

创建maven(javaee)项目

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<?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_3_1.xsd" version="3.1">
  <display-name>ssm-base</display-name>

</web-app>

引用maven依赖

相关依赖

  • springwebmvc
  • jackson
  • spring-orm
  • mybatis-spring
  • mybatis
  • druid
  • mysql
  • spring-test
  • junit
  • slf4j-log4j12
  • lombok

POM配置

<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.dyit.ssm</groupId>
	<artifactId>ssm-base</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>war</packaging>

	<properties>
		<project.spring.version>5.3.16</project.spring.version>
		<project.lombok.version>1.18.12</project.lombok.version>
		<project.json.version>2.13.1</project.json.version>
		<project.mysql.version>8.0.28</project.mysql.version>
		<project.druid.version>1.2.8</project.druid.version>
		<project.mybatis.version>3.5.9</project.mybatis.version>
		<project.mybatis-spring.version>2.0.7</project.mybatis-spring.version>
		<project.junit.version>4.12</project.junit.version>
		<project.log.version>1.7.5</project.log.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${project.spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-orm</artifactId>
			<version>${project.spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${project.spring.version}</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>${project.mysql.version}</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>${project.druid.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>${project.mybatis-spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${project.mybatis.version}</version>
		</dependency>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>${project.junit.version}</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${project.log.version}</version>
		</dependency>

		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>${project.lombok.version}</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>${project.json.version}</version>	
		</dependency>
	</dependencies>
</project>

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SSM框架配置(结构)

结构

  • log4j.properties
  • web.xml
  • 配置两个容器

配置

  • log4j.properties

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  • spring的容器

    • mvc容器

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    • 业务容器

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      druid.driver = com.mysql.cj.jdbc.Driver
      druid.url = jdbc:mysql://localhost:3306/mybatis_db?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
      druid.username=root
      druid.password=1234
      
    • 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_3_1.xsd"
      	version="3.1">
      	<display-name>ssm-base</display-name>
      	<context-param>
      		<param-name>contextConfigLocation</param-name>
      		<param-value>classpath:spring/mybatis/spring-*.xml</param-value>
      	</context-param>
      	<listener>
      		<listener-class>
      		org.springframework.web.context.ContextLoaderListener
      		</listener-class>
      	</listener>
      	<servlet>
      		<servlet-name>springDispatcherServlet</servlet-name>
      		<servlet-class>org.springframework.web.servlet.DispatcherServlet
      		</servlet-class>
      		<init-param>
      			<param-name>contextConfigLocation</param-name>
      			<param-value>classpath:spring/mvc/springmvc-*.xml</param-value>
      		</init-param>
      		<load-on-startup>1</load-on-startup>
      	</servlet>
      	<servlet-mapping>
      		<servlet-name>springDispatcherServlet</servlet-name>
      		<url-pattern>/*</url-pattern>
      	</servlet-mapping>
      </web-app>
      

项目结构(包+前端)

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配置mvc容器

<?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 http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd">

	<context:component-scan base-package="com.dyit.ssm.controller"/>
	<mvc:resources location="static/" mapping="static/**"/>
	<mvc:annotation-driven/>

</beans>

配置业务容器

扫描类创建对象放入容器

	<context:component-scan base-package="com.dyit.ssm">
		<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
	</context:component-scan>

读取数源的配置信息、配置数据源

<context:property-placeholder location="classpath:spring/mybatis/druid/druid.properties"/>

<bean id="druid" class="com.alibaba.druid.pool.DruidDataSource">
    <property name="url" value="${druid.url}"/>
    <property name="username" value="${druid.usename}"/>
    <property name="password" value="${druid.password}"/>
    <property name="driverClassName" value="${druid.driver}"/>
</bean>

配置SqlSessionFactory

	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="druid"/>
		<property name="typeAliasesPackage" value="com.dyit.ssm.entity"/>
		<property name="mapperLocations" value="classpath:spring/mybatis/mapper/*.mapper.xml"/>
	</bean>

配置mybatis的辅助

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.dyit.ssm.mapper"/>
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>

事务配置

<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="druid"/>
</bean>

<tx:annotation-driven transaction-manager="txManager"/>

实体类

@Alias("Publisher")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Publisher {
	
	private Integer id;
	private String name;
	private String loc;

}

mapper接口

public interface IPublisherMapper {
	
	List<Publisher> findAll();

}

mapper配置

<?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.dyit.ssm.mapper.IPublisherMapper"><!-- 接口的位置 -->

	<resultMap type="Publisher" id="PublisherMap">
		<id property="id" column="publisher_id"/>
		<result property="name" column="publisher_name"/>
		<result property="loc" column="publisher_loc"/>
	
	</resultMap>


	<select id="findAll" resultMap="PublisherMap">
		SELECT  * FROM publisher_tab
	</select>
	

</mapper>

service

public interface IPublisherService {
	
	List<Publisher> findAll();

}

@Service
public class PublisherServiceImpl implements IPublisherService {
	@Autowired
	private IPublisherMapper mapper;

	@Override
	public List<Publisher> findAll() {
		
		return mapper.findAll();
	}

}

测试servicce

@ContextConfiguration(locations = "classpath:spring/mybatis/spring-mybatis.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class TestPublisherService {
	
	@Autowired
	private IPublisherService ips;

	@Test
	public void test() {
		System.out.println(ips.findAll());
	}

}

Controller

举报

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SSM框架整合

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