SSM整合

作者: 小杨小杨神采飞杨 | 来源:发表于2020-04-27 18:23 被阅读0次

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

SSM整合

相关文章

网友评论

延伸阅读

深度阅读

栏目导航

热点阅读