SSM框架整合流程

其他 2018-12-11 18:10:10 阅读次数: 0

本次整合是在idea中使用maven进行整合。

①pom.xml导包：

<!-- 集中定义依赖版本号 -->
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <junit.version>4.12</junit.version>
    <spring.version>4.3.8.RELEASE</spring.version>
    <mybatis.version>3.4.6</mybatis.version>
    <mybatis.spring.version>1.3.0</mybatis.spring.version>
    <mysql.version>5.1.24</mysql.version>
    <slf4j.version>1.6.4</slf4j.version>
    <jackson.version>2.9.7</jackson.version>
    <c3p0.version>0.9.5.2</c3p0.version>
    <servlet-api.version>3.1.0</servlet-api.version>
    <jsp-api.version>2.2.1</jsp-api.version>
    <commons-lang3.version>3.3.2</commons-lang3.version>
    <commons-io.version>1.3.2</commons-io.version>
  </properties>

  <dependencies>
    <!-- 单元测试 -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>

    <!-- Spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- 测试包 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- Mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatis.spring.version}</version>
    </dependency>

    <!-- 通用Mapper -->
    <dependency>
      <groupId>com.github.abel533</groupId>
      <artifactId>mapper</artifactId>
      <version>2.3.4</version>
    </dependency>

    <!-- MySql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>

    <!-- Jackson Json处理工具包 -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.version}</version>
    </dependency>

    <!-- c3p0数据源 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>${c3p0.version}</version>
    </dependency>

    <!-- JSP相关 -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>${servlet-api.version}</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>${jsp-api.version}</version>
      <scope>provided</scope>
    </dependency>

    <!-- Apache工具组件 -->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>${commons-lang3.version}</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-io</artifactId>
      <version>${commons-io.version}</version>
    </dependency>

  </dependencies>

  <build>
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.xml</include>
        </includes>
      </resource>
    </resources>

②jdbc.properties配置文件：

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.jdbcUrl=jdbc:mysql:///didasystem?useunicode=true&characterEncoding=utf-8
jdbc.user=root
jdbc.password=1234

③log4j.properties

### set log levels ###  INFO
log4j.rootLogger = INFO,stdout,E
 
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern =  %d{ABSOLUTE} %5p %c{1}:%L - %m%n
log4j.logger.org.quartz=INFO 
log4j.appender.E= org.apache.log4j.DailyRollingFileAppender
log4j.appender.E.File =logs/mylogs.log
log4j.appender.E.DatePattern=yyyy-MM-dd'.log'
log4j.appender.E.Threshold =INFO
log4j.appender.E.layout = org.apache.log4j.PatternLayout
log4j.appender.E.layout.ConversionPattern =%-d{yyyy-MM-dd HH\:mm\:ss}[%c] [%t\:%r] - [%p]  %m%n

④applicationContext.xml配置文件

这里面需要按照一定步骤进行：

  1. 扫描包,不扫描控制层包，交给SpringMVC去管理
  2. 加载配置文件，即jdbc
  3. 配置数据源 c3p0
  4. 配置session工厂,MyBatis和Hibernate的类不一样，注意区分，MyBatis是SqlSessionFactoryBean，Hibernate是LocalSessionFactoryBean
  5. Mapper扫描：因为Mapper层只有接口，Spring框架会自动给Mapper生成代理，也就是说Mapper自动创建对象
  6. 平台事务管理器,不同的dao层框架管理不一样，MyBatis是dataSource，Hibernate是sessionFactory
  7. 开启注解支持
<?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: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/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--1.扫描包,不扫描控制层包，交给SpringMVC去管理-->
    <context:component-scan base-package="com.ds">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--2.加载配置文件 -->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <!-- 配置资源文件 -->
        <property name="locations">
            <list>
                <value>classpath:jdbc.properties</value>
            </list>
        </property>
    </bean>
    <!--3.配置数据源 c3p0 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
          destroy-method="close">
        <property name="driverClass" value="${jdbc.driverClassName}" />
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}" />
        <property name="user" value="${jdbc.user}" />
        <property name="password" value="${jdbc.password}" />
    </bean>
    <!-- 4.配置session工厂,MyBatis和Hibernate的类不一样，注意区分 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>
        <!-- 加载MyBatis配置文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml" />
        <!-- 自动扫描mapper层下面的 xml文件 -->
        <!--<property name="mapperLocations" value="classpath:com/ds/mapper/*.xml"/>-->
        <!-- 给实体层取别名 -->
        <property name="typeAliasesPackage" value="com.ds.entity"/>
    </bean>
    <!-- 5.Mapper扫描：因为Mapper层只有接口，Spring框架会自动给Mapper生成代理，也就是说Mapper自动创建对象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ds.mapper" />
    </bean>
    <!-- 6.平台事务管理器,不同的dao层框架管理不一样，MyBatis是dataSource，Hibernate是sessionFactory -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 7.开启注解支持 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

⑤springmvc.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
    http://www.springframework.org/schema/beans/spring-beans.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">
    <!-- 1.配置扫描控制层包 -->
    <context:component-scan base-package="com.ds.controller" />
    <!--2.开启注解支持-->
    <mvc:annotation-driven/>
    <!--3.放开静态资源 -->
    <mvc:resources location="/media/" mapping="/media/**"/>


</beans>

⑥mybatis-config.xml

这里暂时不用写什么，留个接口，之后使用MyBatis的插件的时候可以再用

<?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>
   
 
  
  
</configuration>

⑦web.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_0.xsd" id="WebApp_ID" version="3.0">
    <display-name>DidaSystemBySSM</display-name>
    <welcome-file-list>
        <welcome-file>login.jsp</welcome-file>
    </welcome-file-list>
    <!-- 配置Spring  -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- 使用监听器启动Spring容器 :当启动服务器的时候 Spring容器就会启动-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 配置SpringMvc的核心控制器 -->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 指定SpringMvc配置文件位置 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <!-- 不能写/*，必须写/，这是REST URL风格的要求，REST风格会在后面介绍 / -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>


    <!-- 解决获取表单中参数 配置POST乱码问题 请求参数乱码 -->
    <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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


</web-app>

接下来就是各个层的代码了，大致就是以下结构：

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