# Tomcat访问日志
# 1. 在tomcat的lib目录中加入4个jar包
- slf4j-api-1.7.25.jar
- logback-access-1.2.3.jar
- logback-classic-1.2.3.jar
- logback-core-1.2.3.jar
# 2. 在tomcat的conf目录中添加logback-access.xml配置文件。参考内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<!-- always a good activate OnConsoleStatusListener -->
<statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%reqAttribute{userId} %t{yyyy-MM-dd HH:mm:ss.SSS} %s %b %D [%i{x-forwarded-for}] "%r"</pattern>
</encoder>
</appender>
<appender name="ROLLING_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>tomcat-access.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>history/tomcat-access.%d{yyyy-MM-dd}_%i.log</fileNamePattern>
<MaxHistory>30</MaxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>10MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<!-- appName、appPort、userId的值AccessLogFilter中添加，在此处可以直接通过%reqAttribute方式获取 -->
<encoder>
<pattern>%reqAttribute{appName} %reqAttribute{appPort} %reqAttribute{userId} %t{yyyy-MM-ddHH:mm:ss.SSS} %s %b %D [%i{X-Forwarded-For}] "%r"</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<appender-ref ref="ROLLING_FILE" />
</configuration>
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# 3.创建AccessLogFilter.java文件
/**
* 访问日志处理器。
*
* @author leichu
*/
public class AccessLogFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
// 获取应用名和端口
String appName = null == request.getContextPath() || request.getContextPath().length() <= 1 ? "" : request.getContextPath().substring(1);
int appPort = request.getLocalPort();
// 从session中获取当前用户信息
CurUser user = CurUserUtil.get(request, request.getSession());
String userId = null == user ? null : user.getId();
// 写入request
request.setAttribute("appName", appName);
request.setAttribute("appPort", appPort);
request.setAttribute("userId", userId);
chain.doFilter(request, response);
}
@Override
public void destroy() {
}
}
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# 4.在web.xml中配置上面的Filter
<filter>
<filter-name>accessLogFilter</filter-name>
<filter-class>com.leichu.webutil.util.AccessLogFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>accessLogFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
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