SSM_CRUD新手练习（2）配置文件

配置之前现需要引入依赖的jar包：

*Spring

*SpringMvc

*Mybatis

*数据库连接池，驱动包

*其他(jstl,Servlet ,Junit..)

1.poxm.xml

<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.atguigu</groupId>
  <artifactId>ssm_crud</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
   <dependencies>
    <dependency>
     <groupId>junit</groupId>
     <artifactId>junit</artifactId>
     <version>3.8.1</version>
     <scope>test</scope>
    </dependency>
    <!-- PageHelper -->
    <dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>5.0.0</version>
    </dependency>
    <dependency>
     <!-- MBG -->
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.3.5</version>
    </dependency>
    <dependency>
     <groupId>log4j</groupId>
     <artifactId>log4j</artifactId>
     <version>1.2.16</version>
     <scope>compile</scope>
     </dependency>
     <!-- Spring jdbc -->
     <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.3.7.RELEASE</version>
   </dependency>
   <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aspects</artifactId>
    <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.2</version>
    </dependency>
    <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.1</version>
    </dependency>
    <dependency>
    <groupId>c3p0</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.1</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.6</version>
     </dependency>

    <dependency>
    <groupId>jstl</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.0.1</version>
    <scope>provided</scope>
     </dependency>
  </dependencies>
</project>

2.本项目还使用了BootStrap前端框架，故到官网下载Bootstrap。在webapp目录下创建static文件保存我们的静态文件。同时将我们下载的Bootstrap解压到该目录下。

3.编写SSM整合的关键配置文件

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_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>Archetype Created Web Application</display-name>
    <!-- 启动Spring的容器 -->
    <!-- needed for ContextLoaderListener -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <!-- Bootstraps the root web application context before servlet initialization -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- SpringMVC的前端控制器 -->
    <!-- The front controller of this Spring Web application, responsible for
        handling all application requests -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- 字符编码过滤器 -->
    <filter>
            <filter-name>CharacterEncodingFilte</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>forceRequestEncoding</param-name>
                   <param-value>true</param-value>
            </init-param>
            <init-param>
                    <param-name>forceResponseEncoding</param-name>
                    <param-value>true</param-value>
            </init-param>

    </filter>
    <filter-mapping>
                  <filter-name>CharacterEncodingFilte</filter-name>
                  <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- 使用Rest风格的URI 将页面post请求转化为指定的delete或者put -->
    <filter>
           <filter-name>HiddenHttpMethodFilter</filter-name>
           <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
            <filter-name>HiddenHttpMethodFilter</filter-name>
            <url-pattern>/*</url-pattern>
    </filter-mapping>
     <!-- 加载log4j配置文件 -->
    <context-param>
      <param-name>log4jConfigLocation</param-name>
      <param-value>classpath:log4j.properties</param-value>
      <!-- <param-value>/WEB-INF/log4j.xml</param-value> -->
    </context-param>
    <listener>
       <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
    </web-app>

4.在WEB-INF目录下创建dispatcherServlet-servlet.xml（spring mvc的配置文件）文件，，同时在java目录下创建我们需要的包，配置如下：

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

   <!-- Spring mvc 的配置文件，包含网站跳转逻辑的控制、配置 -->
   <context:component-scan base-package="com.atguigu" use-default-filters="false">
   <!-- 只扫瞄控制器 -->
   <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
   </context:component-scan>
   <!-- 视图解析器，方便页面返回 -->
   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <property name="prefix" value="/WEB-INF/views/"></property>
         <property name="suffix" value=".jsp"></property>
   </bean>
   <!-- 两个标准配置 -->
   <!-- 将Spring mvc不能处理的请求将给Tomcat -->
   <mvc:default-servlet-handler/>
   <!-- 能支持Spring MVC更高级的内容 如JSR303校验，快捷的ajax 。。。映射动态请求 -->
   <mvc:annotation-driven/>
</beans>

5.创建applicationContext.xml(spring的配置文件)，同时创建数据库的配置文件dbconfig.properties。

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.2.xsd
    http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!-- sping 的配置文件，这里主要配置和业务逻辑相关的 -->
    <!-- ====================================================数据源，事物控制，xxx -->

    <context:component-scan base-package="com.atguigu">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <context:property-placeholder location="classpath:dbconfig.properties"/>
    <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
          <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
          <property name="driverClass" value="${jdbc.driverClass}"></property>
          <property name="user" value="${jdbc.user}"></property>
          <property name="password" value="${jdbc.password}"></property>
    </bean>
    <!--=============================================================== 配置和mybatis的整合 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
     <!-- 制定Mybatis全局配置文件的位置 -->
           <property name="configLocation" value="classpath:mybatis-config.xml"></property>
           <property name="dataSource" ref="pooledDataSource"></property>
           <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>
    <!-- 配置扫描器，将mybatis接口的实现加入到ioc容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <!-- 扫瞄所有dao接口的实现，加入到ioc容器中 -->
          <property name="basePackage" value="com.atguigu.crud.dao"></property>
    </bean>
    <!-- 配置一个可以批量操作的sqlSession -->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
    <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
    <constructor-arg name="executorType" value="BATCH"></constructor-arg>
   </bean>
    <!-- ===================================================================== -->
    <!-- =======================================================================事物控制的配置 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <!-- 控制住数据源 -->
         <property name="dataSource" ref="pooledDataSource"></property>
    </bean>
    <!-- 开启注解的事物，使用xml配置形式的事物（必要主要的使用配置式） -->
    <aop:config>
               <!-- 切入点表达式 -->
               <aop:pointcut expression="execution(* com.atguigu.crud.service..*(..))" id="txPoint"/>
               <!-- 配置事物增强 -->
               <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
    </aop:config>
    <!-- 配置事物增强，事物如何切入 -->

    <tx:advice id="txAdvice">
          <tx:attributes>
                    <!-- 所有的方法都是事物方法 -->
                    <tx:method name="*"/>
                    <!-- 以get开始的所有方法都是查询 -->
                    <tx:method name="get*" read-only="true"/>
          </tx:attributes>
    </tx:advice>
    <!-- Spring配置文件的核心点（数据源、与mybatis的整合、事物控制） -->

</beans>

dbconfig.properties

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_crud
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.user=root
jdbc.password=admin

6.mybatis-config.xml文件，同时在resources目录下创建mapper文件夹。

<?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>
          <!--  <setting name="mapUnderscoreToCamelCase" value="true"/> -->

          <setting name="logImpl" value="LOG4J"/>
     </settings>

     <typeAliases>
          <package name="com.atguigu.crud.bean"/>
     </typeAliases>
     <plugins>
     <plugin interceptor="com.github.pagehelper.PageInterceptor">
      <property name="reasonable" value="true"/>
     </plugin>
     </plugins>
  </configuration>

至此基本的配置已经完成。