springmvc 添加 log4j 日志

1、下载导入项目：log4j-12.17.jar；2、web.xml配置：<!-- 配置Log4j --><listener><listener-class>org.springframework.web.util.Log4jConfigListener</listener-class></listener><context-param><param-name>log4jConfigLocation</param-name><param-value>classpath:log4j.properties</param-value></context-param><context-param><param-name>webAppRootKey</param-name><param-value>webApp.root</param-value></context-param><context-param><param-name>log4jRefreshInterval</param-name><param-value>1000</param-value></context-param><!-- 配置Log4j end -->3、log4j.properties配置：

### set log levels ###

log4j.rootLogger = DEBUG,stdout

### 输出到控制台 ###

log4j.appender.stdout = org.apache.log4j.ConsoleAppender

log4j.appender.stdout.Target = System.out

log4j.appender.stdout.layout = org.apache.log4j.PatternLayout

log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n

### sql ###

log4j.logger.java.sql.Connection=DEBUG

log4j.logger.java.sql.PreparedStatement=DEBUG

log4j.logger.java.sql.ResultSet=DEBUG

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

### file ###log4j.appender.file = org.apache.log4j.RollingFileAppenderlog4j.appender.file.Append=truelog4j.appender.file.MaxFileSize=5000KBlog4j.appender.file.MaxBackupIndex=10log4j.appender.file.layout = org.apache.log4j.PatternLayoutlog4j.appender.file.layout.ConversionPattern =%d{yyyyMMdd HH\:mm\:ss,SSS} %5p [%c] %m%nlog4j.appender.file.encoding=UTF-84、案例：

public class AccountController {private static Logger logger =LoggerFactory.getLogger(AccountController.class);@ResponseBody@RequestMapping("/login")public String login(HttpSession session){logger.info("请求登录");logger.debug("debug");logger.warn("warn");}}