【转】tomcat logs 目录下各日志文件的含义(2)

2.commons-daemon.日期.log

这个日期放的估计是利用服务方式启动tomcat作为守护进程的日志记录，因为我的tomcat启动方式是以服务的方式启动的，索引产生这个日志文件记录了服务的启动状态。

例如:

[2017-12-16 15:45:49] [info]  [1706572] Commons Daemon procrun (1.0.15.0 64-bit) started
[2017-12-16 15:45:49] [info]  [1706572] Running 'Tomcat7' Service...
[2017-12-16 15:45:49] [info]  [1706632] Starting service...
[2017-12-16 15:45:51] [info]  [1706632] Service started in 1617 ms.
[2017-12-16 15:50:57] [info]  [1716024] Stopping service...
[2017-12-16 15:50:58] [info]  [1716024] Service stop thread completed.
[2017-12-16 15:50:59] [info]  [1706572] Run service finished.
[2017-12-16 15:50:59] [info]  [1706572] Commons Daemon procrun finished
[2017-12-16 15:51:21] [info]  [1711056] Commons Daemon procrun (1.0.15.0 64-bit) started
[2017-12-16 15:51:22] [info]  [1711056] Running 'Tomcat7' Service...
[2017-12-16 15:51:22] [info]  [1716072] Starting service...
[2017-12-16 15:51:23] [info]  [1716072] Service started in 1511 ms.

3.host-manager.日期.log

这个估计是放tomcat的自带的manager项目的日志信息的，也没有看到有什么重要的日志信息

4.localhost.日期.log

这个类似于第一种日志，可是信息没有第一种全

5.localhost_access_log.日期.txt

这个是存放访问tomcat的请求的所有地址以及请求的路径、时间，请求协议以及返回码等信息(重要)

例如:

0:0:0:0:0:0:0:1 - - [14/Dec/2017:23:24:03 +0800] "GET /Exam/image/newsLogo.jpg HTTP/1.1" 304 -
0:0:0:0:0:0:0:1 - - [14/Dec/2017:23:24:06 +0800] "POST /Exam/train_findStudyTraincontentByFy.action HTTP/1.1" 200 25
0:0:0:0:0:0:0:1 - - [14/Dec/2017:23:24:06 +0800] "POST /Exam/newsIP_getTypeNews.action HTTP/1.1" 200 258
0:0:0:0:0:0:0:1 - - [14/Dec/2017:23:24:06 +0800] "POST /Exam/newsIP_getTypeNews.action HTTP/1.1" 200 2338

6.manager.日志.log

这个估计也是manager项目专有的日志文件，看不出有什么重要的信息

7.tomcat7-stderr.日期.log

这个是log4j的错误日志，因此在程序中要合理的捕捉异常。

8.tomcat7-stdout.日期.log(类似于eclipse的控制台的信息)

这个是程序中的System语句打印的日志(包括系统抛出的异常)，也终于明白了为什么一再强调不能用打印语句进行系统调试

针对上面7,8做的测试:

log4j.properties

### direct log messages to stdout ###
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=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
### set log levels - for more verbose logging change 'info' to 'debug' ###
#\u5728\u5F00\u53D1\u9636\u6BB5\u65E5\u5FD7\u7EA7\u522B\u4F7F\u7528debug
log4j.rootLogger=error, stdout
### \u5728\u65E5\u5FD7\u4E2D\u8F93\u51FAsql\u7684\u8F93\u5165\u53C2\u6570 ###
#log4j.logger.cn.xm.exam.mapper.exam=TRACE

TestAction.java

package cn.xm.exam.action.exam.exam;
import javax.management.RuntimeErrorException;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import com.opensymphony.xwork2.ActionSupport;
import jxl.common.Logger;
@Controller
@Scope("prototype")
public class TestAction extends ActionSupport {
    private Logger logger = Logger.getLogger(TestAction.class);
    public String syso() {
        System.out.println("这是打印语句");
        return SUCCESS;
    }
    public String loginfo() {
        logger.info("这是info方法的记录信息");
        return SUCCESS;
    }
    public String error() {
        try {
            int i = 1 / 0;
        } catch (Exception e) {
            logger.error("故意除零了", e);
        }
        return SUCCESS;
    }
    public String notcatch() {
        int i = 1 / 0;
        return SUCCESS;
    }
    public String runtimeexe() {
        try {
            int i = 1 / 0;
        } catch (Exception e) {
            throw new RuntimeException("除零运行时异常", e);
        }
        return SUCCESS;
    }
}

struts配置

        <!-- 全局结果集，将response转换为json传到前台 -->
        <global-results>
            <result name="success" type="json">
                <param name="root">response</param>
            </result>
        </global-results>
        <action name="test_*" class="testAction" method="{1}"></action>

(1)访问:

通过访问该变量，就可知道sql语句队多少条记录进行了操作。为什么内存才使用到60%的时候lru就执行了呢（之所以确定是lru执行是因为我发现我的数据丢失的总是前面放进去的，而且这个过程中，这些数据都没有被访问，比如第一次访问的时候，只能访问第1000w条，而第300w条或者之前的数据都已经丢失了，从日志里看，第300w条肯定是放进去了）。mysql的慢查询日志是mysql提供的一种日志记录,它用来记录在mysql中响应时间超过阈值的语句,具体指运行时间。

(2)访问:

tomcat6通过自己内部实现的java日志记录器来记录操作相关的日志，此文件即为日志记录器相关的配置信息，可以用来定义日志记录的组件级别以及日志文件的存在位置等。现在要求我们开发的记录日志的组件，除了要支持记录和文本文件记录两种方式外，我们还需要在不同的应用环境中增加一些额外的功能，比如需要记录日志信息的错误严重级别，需要记录日志信息的优先级别，还有日志信息的扩展属性等功能。缺点:所有的执行的语句当记录到日志中的时候，都将以每行记录的修改来记录，这样可能会产生大量的日志内容,比 如一条update语句tomcat logs下的日志分类，修改多条记录，则binlog中每一条修改都会有记录，这样造成binlog日志量会很大，特别是当执行alter table之类的语句的时候，由于表结构修改，每条记录都发生改变，那么该表每一条记录都会记录到日志中。

2017-12-16 15:51:22 Commons Daemon procrun stdout initialized
这是打印语句
这是打印语句
这是打印语句
这是打印语句
这是打印语句
这是打印语句
这是info方法的记录信息
这是info方法的记录信息

（3）访问:

tomcat7-stderr.2017-12-15.log会记录错误信息:

Error: 故意除零了
java.lang.ArithmeticException: / by zero
    at cn.xm.exam.action.exam.exam.TestAction.error(TestAction.java:29)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:871)
    at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1294)
    at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)
    at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)
    at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)
    at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1370)
    at ognl.ASTMethod.getValueBody(ASTMethod.java:91)
    at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
    at ognl.SimpleNode.getValue(SimpleNode.java:258)
    at ognl.Ognl.getValue(Ognl.java:467)
    at ognl.Ognl.getValue(Ognl.java:431)
    at com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:352)
    at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:404)
    at com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:350)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430)
    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251)
    at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245)
    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575)
    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1083)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:640)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

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