SSM整合
2020-04-27 本文已影响0人
小杨小杨神采飞杨
- 新建一个maven项目，在pom.xml中导入需要的依赖
<dependencies>
<!--lombok，简化pojo实体类的书写-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.10</version>
</dependency>
<!--阿里巴巴的数据库连接池技术-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency>
<!--spring的mvc相关，会自动导入大部分spring需要的依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<!--spring对jdbc的支持-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<!--一下五个构成spring的AOP-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.4</version>
</dependency>
<!--单元测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<!--mysql-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.17</version>
</dependency>
<!--mybatis以及mybatis整合spring需要的依赖-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.3</version>
</dependency>
<!--spring对web项目的支持-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.2.0.RELEASE</version>
</dependency>
<!--servlet和jsp以及jstl-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
</dependency>
</dependencies>
- 在pom.xml中设置build，防止资源导出失败
<!--防止资源导出失败-->
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
-
在resources资源目录下，创建或导入spring、mybatis、springmvc配置文件、数据库配置文件
目录结构
druid数据连接池配置文件
jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/studentmanagementsystem?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
jdbc.username=root
jdbc.password=123456
jdbc.initialSize=5
jdbc.maxActive=10
jdbc.maxWait=3000
注意：8.0以上mysql需要配置时区
spring-mapper： spring整合mybatis的配置文件
<?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:mvc="http://www.springframework.org/schema/mvc"
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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!--扫描指定包下用注解注册的bean-->
<context:component-scan base-package="cn.yzx.studentmanagementsystem.service.impl"/>
<context:component-scan base-package="cn.yzx.studentmanagementsystem.mapper.impl"/>
<!--引入外部资源文件-->
<context:property-placeholder location="classpath:db.properties"/>
<!--配置druid数据源-->
<bean id="datasource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="initialSize" value="${jdbc.initialSize}"/>
<property name="maxWait" value="${jdbc.maxWait}"/>
<property name="maxActive" value="${jdbc.maxActive}"/>
</bean>
<!--配置SqlSessionFactoryBean-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="datasource"/>
<!--绑定mybatis配置文件-->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<property name="mapperLocations" value="classpath:cn/yzx/studentmanagementsystem/mapper/*.xml"/>
</bean>
<!--配置SqlSessionTemplate-->
<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"/>
</bean>
</beans>
mybatis-config：mybatis的配置文件
<?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>
<!--开启日志-->
<setting name="logImpl" value="LOG4J"/>
<!-- <setting name="logImpl" value="STDOUT_LOGGING"/>-->
<!--开启驼峰命名自动映射-->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
<!--设置别名-->
<typeAliases>
<typeAlias type="cn.yzx.pojo.student" alias="stu"/>
</typeAliases>
</configuration>
spring-mvc：springmvc的配置文件
<?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:mvc="http://www.springframework.org/schema/mvc"
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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!--开启注解支持-->
<mvc:annotation-driven/>
<!--选择不拦截静态资源-->
<mvc:default-servlet-handler/>
<!--扫描指定包下使用注解注册的bean-->
<context:component-scan base-package="cn.yzx.studentmanagementsystem.controller"/>
<!--配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
注意点：以上配置的不拦截静态资源只会放过在页面上手写的css样式，若要在项目目录下的css样式全部生效，需要在页面上导入css样式时，路径上加上资源访问路径
演示
spring-service：spring自身的配置文件
<?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:tx="http://www.springframework.org/schema/tx"
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/tx
https://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!--引入spring-mapper.xml，因为声明式事务依赖的TransactionManager需要数据源-->
<import resource="classpath:spring-mapper.xml"/>
<!--开启注解支持-->
<context:annotation-config/>
<!--配置TransactionManager-->
<bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="tram">
<property name="dataSource" ref="datasource"/>
</bean>
<!--开启支持注解的声明式事务-->
<tx:annotation-driven transaction-manager="tram"/>
</beans>
使用applicationContext.xml导入以上三个配置文件，统一管理使用
<?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:mvc="http://www.springframework.org/schema/mvc"
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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<import resource="classpath:spring-mvc.xml"/>
<import resource="classpath:spring-mapper.xml"/>
<import resource="classpath:spring-service.xml"/>
</beans>
- 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">
<!--mvc核心servlet，进行资源的跳转-->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--绑定mvc的配置文件，因为整合ssm，所以使用总的配置文件，保证能访问到所有bean-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<!--设置启动优先级，越小越高-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--为解决乱码问题，设置过滤器，在读取到数据的第一时间先转换编码在进行操作-->
<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>
-
根据xml配置中的路径，将实体类、三层结构、页面导入或写出来
目录结构
- 注意点：
-
点开右上角项目配置
配置
spring的配置应当如下
正确结果
同时确保你项目结构的WEB-INF目录下有lib文件夹，内部有所有导入依赖对应的jar包，这是idea的问题，不会自动导入，若没有lib文件夹，手动创建
正确结果
-
spring-mapper.xml
spring-mapper.xml
此处可以完全将mybatis配置文件替代，但是建议将mybatis的设置和别名在mybatis的配置文件中配置，一可以表示这是ssm项目，二更方便管理
