SSM框架整合 + Druid数据源 + log4j2 (一)

项目目录结构:

配置文件

1、springmvc的配置文件 spring-web.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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- 添加注解驱动 -->
    <mvc:annotation-driven/>

    <!-- 默认扫描的包路径 -->
    <context:component-scan base-package="com.ray.web"/>

    <!-- 过滤静态文件的拦截 -->
    <mvc:default-servlet-handler/>

    <!-- 定义跳转的文件的前后缀 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

2、spring整合mybatis配置文件spring-dao.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:mvc="http://www.springframework.org/schema/mvc"
       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-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <!-- 配置整合mybatis过程 -->
    <!-- 1.配置数据库相关参数properties的属性：${url} -->
    <!-- 使用数据库配置文件解耦 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!-- 下面的druid配置都是基本配置,具体优化设置可以上网查询,也可以去github上面直接搜索druid -->
    <!-- 2.数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 配置连接池属性 -->
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="1"/>
        <property name="minIdle" value="1"/>
        <property name="maxActive" value="10"/>

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="10000"/>

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000"/>

        <!-- 验证连接有效与否的SQL，不同的数据配置不同 -->
        <property name="validationQuery" value="SELECT 1" />

        <!-- 如果空闲时间大于timeBetweenEvictionRunsMillis，执行validationQuery检测连接是否有效 -->
        <property name="testWhileIdle" value="true"/>

        <!-- 这里建议配置为TRUE，防止取到的连接不可用 -->
        <property name="testOnBorrow" value="true"/>
        <property name="testOnReturn" value="false"/>

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="true"/>
        <property name="maxPoolPreparedStatementPerConnectionSize" value="20"/>

        <!-- 这里配置提交方式，默认就是TRUE，可以不用配置 -->
        <property name="defaultAutoCommit" value="true" />

        <!-- 开启Druid的监控统计功能 -->
        <property name="filters" value="stat,log4j2"/>

        <!-- com.alibaba.druid.filter.Filter -->
        <property name="proxyFilters">
            <list>
                <ref bean="log-filter"/>
            </list>
        </property>
    </bean>

    <!-- 上面的druid的配置 -->
    <bean id="log-filter" class="com.alibaba.druid.filter.logging.Log4j2Filter">
        <!-- 表示是否连接所有Connection相关的日志 -->
        <property name="connectionLogEnabled" value="false"/>
        <!-- 表示是否连接所有Statement相关的日志 -->
        <property name="statementLogEnabled" value="false"/>
        <!-- 表示是否显示结果集 -->
        <property name="resultSetLogEnabled" value="true"/>
        <!-- 表示是否显示SQL语句 -->
        <property name="statementExecutableSqlLogEnable" value="true"/>
    </bean>

    <!-- 3.配置Mybatis SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 扫描entity包, 使用别名 -->
        <property name="typeAliasesPackage" value="com.ray.entity"/>
        <!-- 扫描sql配置文件:mapper需要的xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.ray.dao"/>
    </bean>

</beans>

3、数据库连接参数配置 jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=root

4、mybatis配置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>
    <!-- 配置全局属性 -->
    <settings>
        <!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
        <setting name="useGeneratedKeys" value="true" />

        <!-- 使用列别名替换列名 默认:true -->
        <setting name="useColumnLabel" value="true" />

        <!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>

</configuration>

5、Log4j2配置文件 log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Log4j 2.x 配置文件。每30秒自动检查和应用配置文件的更新； -->
<configuration status="warn" monitorInterval="30" strict="true" schema="Log4J-V2.2.xsd">
    <Properties>
        <property name="LOG_HOME">logs</property>
        <property name="FILE_NAME">test</property>
    </Properties>
    <appenders>

        <!-- 输出到控制台 -->
        <console name="Console" target="SYSTEM_OUT">
            <!-- 需要记录的级别 -->
            <!-- <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY" /> -->
            <PatternLayout pattern="%date{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %level [%C{36}.%M] - %msg%n"/>
        </console>

        <!-- 循环文件日志输出 -->
        <RollingRandomAccessFile name="running-log"
                                 fileName="${LOG_HOME}/${FILE_NAME}.log" filePattern="${LOG_HOME}/$${date:yyyy-MM}/${FILE_NAME}-%d{yyyy-MM-dd}-%i.log.gz">
            <PatternLayout
                    pattern="[%-5p] %d %c - %m%n" />
            <Policies>
                <TimeBasedTriggeringPolicy />
                <SizeBasedTriggeringPolicy size="60 MB" />
            </Policies>
            <DefaultRolloverStrategy max="20" />
        </RollingRandomAccessFile>
    </appenders>

    <loggers>
        <!-- 全局配置 -->
        <root level="info">
            <appenderRef ref="Console"/>
            <appenderRef ref="running-log"/>
        </root>

        <logger name="org.springframework.web" level="debug" additivity="false">
            <appenderRef ref="Console"/>
        </logger>
        <logger name="com.mc.core.service" level="debug" additivity="false">
            <appender-ref ref="Console"/>
        </logger>

        <!-- druid配置 -->
        <logger name="druid.sql.Statement" level="debug" additivity="false">
            <appender-ref ref="Console"/>
            <appender-ref ref="running-log"/>
        </logger>
        <logger name="druid.sql.ResultSet" level="debug" additivity="false">
            <appender-ref ref="Console"/>
            <appender-ref ref="running-log"/>
        </logger>
    </loggers>
</configuration>

6、最后 web.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

  <!-- 阿里数据源 BENGIN -->
  <servlet>
    <servlet-name>DruidStatView</servlet-name>
    <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>DruidStatView</servlet-name>
    <url-pattern>/druid/*</url-pattern>
  </servlet-mapping>
  <!-- 阿里数据源 END -->

  <!-- spring4 mvc BEGIN -->
  <servlet>
    <servlet-name>springMVC</servlet-name> <!-- mvc调度器 -->
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 配置springMVC需要加载的配置文件
        spring-dao.xml,spring-service.xml,spring-web.xml
        Mybatis - > spring -> springmvc
     -->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/spring-*.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <!-- 默认匹配所有的静态资源,此处配置出错,会产生错误500 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- spring4 mvc END -->

  <!-- Log4j2 BEGIN -->
  <listener>
    <listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class>
  </listener>
  <filter>
    <filter-name>log4jServletFilter</filter-name>
    <filter-class>org.apache.logging.log4j.web.Log4jServletFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>log4jServletFilter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>INCLUDE</dispatcher>
    <dispatcher>ERROR</dispatcher>
  </filter-mapping>
  <!-- Log4j2 END -->

  <!-- Spring字符集过滤器  BENGIN-->
  <filter>
    <filter-name>SpringEncodingFilter</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>SpringEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <!-- Spring字符集过滤器  END-->

  <!-- 系统首页 -->
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

运行结果

启动项目后，在web浏览器中输入：http://localhost:8080/项目名/druid/index.html ，查看druid是否配置成功。