log4jdbc使用
一、项目介绍
log4jdbc项目地址：http://code.google.com/p/log4jdbc/
可以将原先的参数占位符“？”，替换为实际参数值，方便调试
如：select username,password from bitth_date > ? and age < ?
替换为：select username,password from bitth_date > to_date(‘2010-11-11’,’yyyy-mm-dd’) and age < 20
另外可以输出调用时间等。
二、log4jdbc使用
1. 选择log4jdbc版本，按照网站描述
log4jdbc3-1.2beta2.jar for JDBC 3 support in JDK 1.4 , JDK 1.5
log4jdbc4-1.2beta2.jar for JDBC 4 support in JDK 1.6 , JDK 1.7
2. 需要使用SLF4j
3. 设置jdbc driver。
如：在jdbc.properties中将原先的
jdbc.driver=oracle.jdbc.driver.OracleDriver
修改为
jdbc.driver=net.sf.log4jdbc.DriverSpy
4. 修改jdbc url。
如：在jdbc.properties中将原先的
jdbc.url=jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=test)))
修改为
jdbc.url=jdbc:log4jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=test)))
5. 设置logger
如在控制台仅需要输出sql语句的log4j.properties
log4j.logger.jdbc.sqlonly=DEBUG,sql log4j.additivity.jdbc.sqlonly=true log4j.appender.sql=org.apache.log4j.ConsoleAppender log4j.appender.sqlThreshold=debug log4j.appender.sqlTarget=System.out log4j.appender.sqlEncoding=GBK log4j.appender.sql.layout=org.apache.log4j.PatternLayout log4j.appender.sql.layout.ConversionPattern=-----> %d{yyyy-MM-dd HH:mm:ss.SSS} %m%n%n
目前版本为1.2beta2。
log4jdbc文档中的log4j.properties示例
!============================================================================== ! log4j.properties - An example configuration properties file for log4j. ! ! Logging levels are: ! DEBUG < INFO < WARN < ERROR < FATAL !============================================================================== ! turn on the internal log4j debugging flag so we can see what it is doing log4j.debug=true !============================================================================== ! JDBC API layer call logging : ! INFO shows logging, DEBUG also shows where in code the jdbc calls were made, ! setting DEBUG to true might cause minor slow-down in some environments. ! If you experience too much slowness, use INFO instead. ! Log all JDBC calls except for ResultSet calls log4j.logger.jdbc.audit=INFO,jdbc log4j.additivity.jdbc.audit=false ! Log only JDBC calls to ResultSet objects log4j.logger.jdbc.resultset=INFO,jdbc log4j.additivity.jdbc.resultset=false ! Log only the SQL that is executed. log4j.logger.jdbc.sqlonly=DEBUG,sql log4j.additivity.jdbc.sqlonly=false ! Log timing information about the SQL that is executed. log4j.logger.jdbc.sqltiming=DEBUG,sqltiming log4j.additivity.jdbc.sqltiming=false ! Log connection open/close events and connection number dump log4j.logger.jdbc.connection=FATAL,connection log4j.additivity.jdbc.connection=false ! the appender used for the JDBC API layer call logging above, sql only log4j.appender.sql=org.apache.log4j.FileAppender log4j.appender.sql.File=./logs/sql.log log4j.appender.sql.Append=false log4j.appender.sql.layout=org.apache.log4j.PatternLayout log4j.appender.sql.layout.ConversionPattern=-----> %d{yyyy-MM-dd HH:mm:ss.SSS} %m%n%n ! the appender used for the JDBC API layer call logging above, sql timing log4j.appender.sqltiming=org.apache.log4j.FileAppender log4j.appender.sqltiming.File=./logs/sqltiming.log log4j.appender.sqltiming.Append=false log4j.appender.sqltiming.layout=org.apache.log4j.PatternLayout log4j.appender.sqltiming.layout.ConversionPattern=-----> %d{yyyy-MM-dd HH:mm:ss.SSS} %m%n%n ! the appender used for the JDBC API layer call logging above log4j.appender.jdbc=org.apache.log4j.FileAppender log4j.appender.jdbc.File=./logs/jdbc.log log4j.appender.jdbc.Append=false log4j.appender.jdbc.layout=org.apache.log4j.PatternLayout log4j.appender.jdbc.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.SSS} %m%n ! the appender used for the JDBC Connection open and close events log4j.appender.connection=org.apache.log4j.FileAppender log4j.appender.connection.File=./logs/connection.log log4j.appender.connection.Append=false log4j.appender.connection.layout=org.apache.log4j.PatternLayout log4j.appender.connection.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.SSS} %m%n