sql日志框架log4jdbc的AOP式使用

log4jdbc.log4j2

参考：1.  http://badqiu.iteye.com/blog/743100     2.  https://code.google.com/p/log4jdbc/     3.  https://code.google.com/p/log4jdbc-log4j2/ 

1. 引入项目依赖
   

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   <dependency>     <groupId>org.bgee.log4jdbc-log4j2</groupId>     <artifactId>log4jdbc-log4j2-jdbc4</artifactId>     <version>1.16</version> </dependency>

2. 扩展的一个拦截器类

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   public class DataSourceSpyInterceptor implements MethodInterceptor {           private RdbmsSpecifics rdbmsSpecifics = null;            private static Method method = null;           private RdbmsSpecifics getRdbmsSpecifics(Connection conn) {         if(rdbmsSpecifics == null) {             try {                 if (null ==  method) {                     method = DriverSpy.class.getDeclaredMethod("getRdbmsSpecifics", Connection.class);                 }                 method.setAccessible(true);                 rdbmsSpecifics = (RdbmsSpecifics) method.invoke(null, conn);                 method.setAccessible(false);             } catch (SecurityException e) {                 e.printStackTrace();             } catch (NoSuchMethodException e) {                 e.printStackTrace();             } catch (IllegalArgumentException e) {                 e.printStackTrace();             } catch (IllegalAccessException e) {                 e.printStackTrace();             } catch (InvocationTargetException e) {                 e.printStackTrace();             }         }         return rdbmsSpecifics;     }      @Override     public Object invoke(MethodInvocation invocation) throws Throwable {          Object result = invocation.proceed();              if(SpyLogFactory.getSpyLogDelegator().isJdbcLoggingEnabled()) {                  if(result instanceof Connection) {                     Connection conn = (Connection)result;                      return new ConnectionSpy(conn,getRdbmsSpecifics(conn),SpyLogFactory.getSpyLogDelegator());                  }             }             return result;     } }

   
   

3. 配置spring配置文件applicationContext.xml

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   <bean id="log4jdbcInterceptor" class="net.sf.log4jdbc.DataSourceSpyInterceptor" />    <bean id="dataSourceLog4jdbcAutoProxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">     <property name="interceptorNames">         <list>            <value>log4jdbcInterceptor</value>                 </list>     </property>     <property name="beanNames">         <list>            <value>dataSource</value>         </list>     </property>  </bean>

   其中net.sf.log4jdbc.DataSourceSpyInterceptor为刚刚新建拦截器所在路径

4. 配置你的日志配置文件，我的项目用的是logback，在logback.xml中配置

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   <!--log4jdbc --> <logger name="jdbc.sqltiming" level="DEBUG"/> <logger name="jdbc.sqlonly" level="DEBUG"/> <logger name="jdbc.audit" level="ERROR"/> <logger name="jdbc.connection" level="DEBUG"/>

   配置说明请参考https://code.google.com/p/log4jdbc-log4j2/ 中的说明4.2.2. Configure the loggers

   
   

   现在你的日志文件中就会有优雅的 SQL 语句打印出来了，对原项目基本没有影响