小白的Java之路——MarkDown的運用

阿新 • • 發佈：2021-02-12

SSM框架整合

由於SpringMVC是Spring框架中的一個模組，所以SpringMVC與Spring之間不存在整合的問題，只要引入相關JAR包就可以直接使用。所以SSM框架整合就只涉及Spring與Mybatis的整合，以及SpringMVC與Mybatis的整合。

在這裡插入圖片描述

1.新增相關jar包

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source 
>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
    <springversion>5.0.8.RELEASE</springversion>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</ 
artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- 加入ServletAPI -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version> 
3.1.0</version>
      <scope>provided</scope>
    </dependency>
    <!-- MySQL依賴 start -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.22</version>
    </dependency>
    <!-- 加入MyBatis 依賴 start -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.8</version>
    </dependency>
    <!-- 引入Spring(包含SpringMVC) 依賴 start -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${springversion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${springversion}</version>
    </dependency>
    <!-- 引用外掛依賴：MyBatis整合Spring,如果mybatis版本在3.4及以上版本
    mybatis-spring的版本要在1.3以上 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>
    <!-- JSTL -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- 德魯伊資料連線池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.0.9</version>
    </dependency>
    <!-- pagehelper -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.1.6</version>
    </dependency>
    <!--處理json-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.5</version>
    </dependency>
    <!--javaee-->
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>7.0</version>
      <scope>provided</scope>
    </dependency>
    <!--檔案上傳下載-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.5</version>
    </dependency>
  </dependencies>

2.編寫配置檔案

(1)建立資料庫常量配置檔案db.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8&serverTimezone=UTC
jdbc.username=root
jdbc.password=123456

(2)Spring配置檔案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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--讀取db.properties-->
    <context:property-placeholder location="classpath:db.properties"></context:property-placeholder>

    <!--配置資料來源-->
    <bean id="db" 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>

<!--    事務管理器，依賴於資料來源-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="db"></property>
    </bean>

<!--    開啟事務註解-->
    <tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

<!--    配置mybatis工廠SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--        注入資料來源-->
        <property name="dataSource" ref="db"></property>
<!--        指定mybatis配置檔案所在-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations" value="classpath:mapper/*"></property>
    </bean>

    <!--配置mapper掃描器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.lqh.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>

    <!--掃描Service-->
    <context:component-scan base-package="com.lqh.service"></context:component-scan>


<!--    配置登入攔截器資訊-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="com.lqh.util.LoginInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>


</beans>

(3)以及Mybatis配置檔案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>
    <!--別名定義-->
    <typeAliases>
        <package name="com.lqh.bean"/>
    </typeAliases>

    <plugins>
        <!-- PageHelper4.1.6 -->
        <plugin interceptor="com.github.pagehelper.PageHelper">
            <property name="dialect" value="mysql"/>
        </plugin>
    </plugins>
</configuration>

(4)建立SpringMVC配置檔案springmvc-config.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:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<!--    配置掃描包，掃描@Controller註解的類-->
        <context:component-scan base-package="com.lqh.controller"></context:component-scan>
<!--    載入註解驅動-->
    <mvc:annotation-driven></mvc:annotation-driven>
<!--    配置檢視解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
</beans>

(5)在web.xml中，配置Spring的檔案監聽器，編碼過濾器以及SpringMVC的前端控制器等資訊

<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_2_5.xsd" version="2.5">

  <display-name>Archetype Created Web Application</display-name>

<!--  配置載入spring檔案的監聽器-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
<!--  編碼過濾器-->
<filter>
  <filter-name>encoding</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>encoding</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

<!--  配置SpringMVC核心 前端控制器-->

  <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:springmvc-config.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  
</web-app>

3.配置Controller檔案

使用註解：@Controller,@RequestMapping,@AutoWired,@Qualifiler(“empBiz”)

4.新增service,dao層

使用註解：@Service, @AutoWired

(1)dao層省略了實現類

(2) dao 層只定義介面

注:當添加了spring-jdbc的jar包後，會自動提交事務

分頁外掛配置：

1.引入jar包

<!-- pagehelper -->
<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>4.1.6</version>
</dependency>

2.配置Mybatis配置檔案mybatis-config.xml

<plugins>
    <!-- PageHelper4.1.6 -->
    <plugin interceptor="com.github.pagehelper.PageHelper">
    	<property name="dialect" value="mysql"/>
    </plugin>
</plugins>