mybatis中log4j.properties 打印sql語句

轉載：http://blog.csdn.net/daxiang12092205/article/details/18102057

（1）將javax.servlet_1.0.0.0_2-5.jar拷貝到web-inf/lib下。

（2）在web-inf根目錄下新建文件log4j.properties，配置日誌輸出級別、日誌路徑等信息。log4j.properties代碼：

# debug<info<warn<error
log4j.rootLogger=debug, LOGFILE
#log4j.debug=true

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
#設置包日誌輸出級別
#log4j.logger.com.xy6=INFO, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
#輸出到控制檯
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.Threshold=INFO
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d %p [%c] - <%m>%n

#輸出到文件
log4j.appender.LOGFILE=org.apache.log4j.RollingFileAppender
log4j.appender.LOGFILE.File=${webappRoot}/log/AllLog.log
log4j.appender.LOGFILE.MaxFileSize=10000KB
log4j.appender.LOGFILE.MaxBackupIndex=1000
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n

#mybatis顯示SQL語句日誌配置
log4j.logger.com.ibatis=DEBUG
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

（3）在web根目錄下新建文件夾log，作爲日誌文件輸出的根目錄。

（4）在com.xy6下新建log4j初始化類Log4jInitServlet.java，初始化log4j配置文件中日誌路徑中的參數webappRoot，輸出應用的磁盤路徑。若log4j.properties中日誌輸出路徑爲固定值如E:\j2ee\workspace\SSM\web\log，則無需再寫該類進行初始化。Log4jInitServlet.java代碼：

package com.xy6;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import org.apache.log4j.PropertyConfigurator;

public class Log4jInitServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    public void init() throws ServletException {
        System.out.println("---path:"+getServletContext().getRealPath("/"));
        System.setProperty("webappRoot", getServletContext().getRealPath("/"));
        PropertyConfigurator.configure(getServletContext().getRealPath("/")
                + getInitParameter("configfile"));
    }
}

（5）修改web.xml，配置log4j配置文件路徑及初始化類。web.xml代碼：

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>SSM</display-name>

    <welcome-file-list>
        <welcome-file>/demo/demo.jsp</welcome-file>
    </welcome-file-list>

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>log4j config file</servlet-name>
        <servlet-class>com.xy6.Log4jInitServlet</servlet-class>
        <init-param>
            <param-name>configfile</param-name>
            <param-value>/WEB-INF/log4j.properties</param-value>
        </init-param>

        <load-on-startup>1</load-on-startup>
    </servlet>

</web-app>

（6）修改DemoAction.java，測試日誌文件是否正確輸出。DemoAction.java代碼：

package com.xy6;

import java.util.List;

import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;

import com.opensymphony.xwork2.ActionSupport;

public class DemoAction extends ActionSupport {

    private static final long serialVersionUID = 1L;
    private final Logger logger = Logger.getLogger(DemoAction.class.getName());

    @Autowired
    private DemoDao demoDao;

    public String execute(){
        DemoHelper demoHelper = new DemoHelper();
        System.out.println("---curren year:"+demoHelper.getCurYear());
        DemoVO demoVO = new DemoVO();
        demoVO.setCode(1);
        List<DemoVO> listDemoVO = demoDao.selectByCode(demoVO);
        for(int i=0;i <listDemoVO.size(); i++){
            System.out.println("---i:"+listDemoVO.get(i).toString());
        }
        this.testLog4j();
        return "success";
    }

    public void testLog4j(){
        logger.info("info");
        logger.warn("warn");
        logger.debug("debug");
        logger.error("error");
        logger.fatal("fatal");
    }
}

（7）重啓域服務，控制檯輸出應用的磁盤路徑。如下圖：

（8）瀏覽器中訪問http://localhost:9001/web/demo.action，頁面顯示demo.jsp，log文件夾下生成AllLog.log。如下圖：

（9）至此，log4j配置結束。